Find cheap flights from Ontario to Denver

ONT - DEN

Find cheap flights from Ontario to Denver

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Round-trip
Economy
Ontario (ONT)
Denver Intl
Sun 10/17
Sun 10/24
Any month
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Good to know

Low season

AprilBest time to beat the crowds with an average 20% drop in price.

High season

DecemberMost popular time to fly with an average 34% increase in price.

Average price round-trip

$158(avg. price over the last 2 weeks)

Good deal round-trip

$126or less

Good deal one-way

$75or less

When to book flights from Ontario to Denver

Estimated round-trip price
Average price per month
Flight prices as travel date approaches

Top tips for finding a cheap flight

  • Looking for a cheap flight? 25% of our users found flights on this route for $75 or less one-way and $126 or less round-trip.
  • The cheapest flight from Ontario to Denver was found 18 days before departure, on average.
  • Book at least 1 week before departure in order to get a below-average price.
  • High season is considered to be November, December and January. The cheapest month to fly is April.
  • Morning departure is around 3% cheaper than an evening flight, on average*.
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

FAQs for booking flights from Ontario to Denver

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Top 5 airlines serving Ontario to Denver Intl

Scores according to KAYAK customer reviews

8.3
Alaska Airlines
Overall score based on 29,661 reviews
8.5
Boarding
8.3
Comfort
8.8
Crew
7.9
Entertainment
7.9
Food
Airline reviews

Pros: "Alaska Airlines is the best."

Cons: "Don’t stuff passengers in every seat."

Pros: "Middle seas was open"
Cons: "More social distance during check in. Smoother landing"

Pros: "The seats were comfortable, the snacks were great, and the crew was friendly and professional"
Cons: "Flight was delayed"

Cons: "Nothing"

Cons: "Packed flight but the crew and ground staff opened to back door to board more easily. Thanks!"

Pros: "The male steward was very nice"
Cons: "Flight was delayed on tarmac for 2 hours better communication"

Pros: "Friendly crew. Great movie selection through gogo inflight entertainment!"

Pros: "Helped with bags and quick to assist"

Cons: "Seat cushions are too thin."

Pros: "Crew was great!"
Cons: "Over an hour late"

Pros: "Great on time too"
Cons: "Very happy"

Cons: "Two rows up from us, I kid threw up all over the center aisle as we were pulling away from the gate. We returned to the gate to allow a cleaning crew to board and clean. However, the cleaning job was rushed and left remnants of the throw up behind which smelled the whole 2.5 hour flight. It really felt unsanitary and unsafe being that it’s unknown what caused the child to get sick. It very well could have been a stomach virus and could have infected the people in rows around the incident due to the mediocre cleaning job. I understand that it’s important to keep flights on-time, especially for connecting flights, but the safety of the passengers and their health should ALWAYS be the #1 priority."

Pros: "The flight attendants were friendly and professional and took time for a little personal conversation."

Pros: "Comfortable seats with nice details; power ports; drinks and snacks."
Cons: "Boarding in Seattle was ridiculous. Security took a massive amount of time, and we barely arrived in time for th flight despite arriving hours early. The attendants at the gate were a bit rude and begrudgingly accommodating."

Pros: "No one in the seat next to me and we got there 20 mins early"
Cons: "Deboarding is always a hassle, nothing really bad"

Pros: "Very professional and helpful especially Ms Sahar in Ontario airport."

Pros: "Friendly and fun"

Cons: "I missed the flight"

Pros: "Ontime"
Cons: "Cramped seats not much room. Kisok to check bags hard to use or did work at all"

Pros: "Couldn’t really think of anything on the flight that stood out."
Cons: "There isn’t anything on this flight that stood out."

Pros: "It was a short flight. The overhead bins weren't overloaded."
Cons: "Boarding was a hassle. The flight was too crowded. The food was non-existent.. Seats were uncomfortable."

Cons: "Two out of three USB ports would not hold cable on my premium seat row. Would not recommend if something as simple as USB port inoperable is not handled by cabin service or maintenance. We paid additional fees for this seating and couldn’t keep device charged. Very disappointing"

Cons: "Food and wine way over priced."

Pros: "I'm a big fan of Alaska Airlines and their partner Horizon Airlines. I travelled from Edmonton to Denver via Seattle last night. All the staff if pleasant and treats you as a valued customer."

Pros: "The flight was pleasant. The cabin attendants were cordial and made sure everyone's needs were met. Air temperature was excellent and luckily we didn't have any turbulence."
Cons: "II was hoping to get a $79 fair to Seattle and had to pay three times that plus baggage fee."

Pros: "Boarding was a breeze, crew communicated well, seats were comfortable, plane wasn't too hot or too cold"
Cons: "Had a problem with checking my baggage in anchorage which led to $300 being held from my account for 5 days. They refunded my baggage fee though"

Pros: "Seat was comfortable and in-flight service was very good."
Cons: "Gogoinflight didn't work for at least the first 30 minutes of flight. I upgraded to first class, but there was no service until we were above 10,000 feet. I don't know if this was a one-time thing, or if other airlines are just better at accommodating first class."

Pros: "Food I purchased was very good"
Cons: "Food was not priced well. NO WIFI??? WHAT?"

Pros: "The flight left and arrived on time. Overall a great experience with friendly and caring people. Will definitely use them in the near future!"
Cons: "No issues at all"

Pros: "The flight was comfortable and quick. The staff was very friendly and engaging. We landed about 15 minutes early which is always appreciated!"
Cons: "Although Ontario only has a few gates for Alaska I still found it strange that they didn't post which gate we would be boarding at until 5 minutes past the scheduled boarding time. Not a big deal but for someone who's not familiar with the airport it could be confusing."

Pros: "Loved the early arrival, the seamless process."

Pros: "Sat in Premium. Early board because of wheel chair. Lots of room. Smooth flight. Arrived early in Seattle. Ta very nice. Took all way to car in parking lot. Cleanliness."
Cons: "TA forgot one of my bags at security..but I didn't miss until almost to departure gate. Had to check my medicine bottle of cough syrup. What a pain. Put into separate basket. Open & swab. Weird. I'm 75 not a terrorist but I did have pneumonia recently & needed it do would not cough & choke on plane."

Cons: "Gate 11c."

Cons: "Nada"

Pros: "Flight on time and the crew were very pleasant and professional."

Pros: "Almost everything. First time flying with Alaska Airlines thought the food would be better o thought the food would be better on such a long flight but it was enough to snack on until I got to Seattle great experience in between flights was able to get an earlier flight to Denver"
Cons: "Wish there was a little bit more offered for food but overall a fantastic experience mahalo"

Pros: "Just fine. Staff was helpful and actually very kind crew (stewardess) I don't recall her name but middle aged blond. Very nice."
Cons: "Charis could have more room and there was bad turbulence but what can be done about that? we arrived safe and sound and that was good."

Pros: "Easy, and comfortable."

Pros: "Very friendly staff."

Pros: "The crew and captain were amazing and very apologetic!"
Cons: "I paid an extra $300 for preferred seating because I wanted the extra legroom to sleep. I'm over 6 feet so coach is very uncomfortable. My girlfriend and I got in our seats and 10 minutes later, a crew member walked back and asked us to get off the flight. We got off the flight and were met by police officer. Low and behold, the woman sitting next to us said that she believed we were intoxicated and feared for her safety. I am a police officer and my girlfriend is a nanny/preschool teacher. Not very threatening. The officer on the ground looked us over and asked us a few questions and determined we were not intoxicated and we were no threat to the other passengers. The airline asked us to get back on the flight and we would be sitting in coach because the woman adult children were now sitting in our seats. I told them to book us on another flight with the same seats that I PAID for or put us back in OUR seats on that same flight we just got kicked off of. We were escorted back onto the flight and the crew asked the woman's children to go back to their seats so we could have our seats back. They then asked us not to speak to the woman sitting next to us (which we never did to begin with!!!) and then told us we could have free food and drinks. The whole experience was insanely embarrassed and I can't believe that woman sitting next to us can get away with what she did. I am absolutely livid that they would ask us to get off the flight and then give our seats to the woman's ADULT children without vetting the situation and making the easy determination that we were NOT intoxicated. So embarrassing!!"

Pros: "Glad I discovered Alaska Airlines!"

Pros: "The short flight was made especially nice with one flight attendant offering to give a free drink for showing Seattle seahawk pride! Either wearing a jersey or showing a picture with seahawk pride. Very friendly and fun! The views were very beautiful also! Love Alaska airlines and LOVE the seahawks!!"

Cons: "The flight was canceled but I received NO notification WHATSOEVER and was not aware until I got to the airport- which was a 2 hour drive away."

Pros: "It got cancelled due to 3 inch of snow. And I missed work in Denver because of it. Very inconvenient"
Cons: "I would like to not have it cancel"

Pros: "Offering price"
Cons: "Real price. Ridiculous after carry-on and other fees"

Pros: "Nothing g"
Cons: "Plane was delayed....which is fine... but when we finally landed, we parked on the tarmac in the rain after 1230am . Had to walk to the airport in the rain and wind. Older people were having trouble walking the distance, I actually went ahead to get a wheelchair for an older lady that I didn't know because there was no one on the tarmac to assist. Very horrible experience and I fly Alaska often. Never have I ever exited the plane on the tarmac in pdx and when I complained to an Alaska worker, she told me it was normal. I fly to PDX once a month and have never exited directly on the tarmac. I will definitely look for any other airline to fly instead of Alaska from now on. I will even fly spirit airlines....that is how much I will never fly Alaska again."

Pros: "Great crew"
Cons: "Food ok"

Pros: "Ditto statements above"
Cons: "Ditto statements above"

"Great service during the pandemic."

"We flew First Class to LA from Denver on the Delta-branded contract airline - Sky West. On the way back, we flew First Class on a Delta Airlines owned jet, and the experience was so much better. The flights should have been comparable; but unfortunately cost-cutting by Sky West was evident."

"Our favorite flights. Straight shots, with as much comfort as one would expect."

Pros: "Crew was nice"
Cons: "Nothing really"

Pros: "Crew was great!"

Pros: "My favorite airline to travel from Denver to Puerto Rico, round trip, and in Atlanta I will make the stopover, I also feel so safer to travel with my cat ... they are the best airline in everything"
Cons: "Let people who travel with pets earn extra points for taking them with Delta"

Pros: "The accommodation to the military service members!"
Cons: "Air fresheners should be used on the airplane."

Pros: "Delta is doing a great job keeping everything calm and clean during this pandemic!"

Cons: "Nothing all excellent"

Cons: "It was great! Nice job Delta !"

Cons: "For options none. No drink carts at all. Had coffee once after I asked. Poor quality entertainment. Just a huge waste of money."

Pros: "Christina brown was amazing at gate"

Cons: "The main economy seats were far too narrow."

Pros: "I always have a consistently good experience on Delta. Everything was great."

Cons: "My flight was delayed almost 3 hours. Not good. Once in the air it was fine."

Pros: "Everything ok. I was hoping to buy food but glad to see almonds as one of the free snacks. Delta seems to be upping its game a bit lately."
Cons: "No US carrier seems able to master smooth boarding without standing waits."

Cons: "1.5 hour delay...no reason given!"

Pros: "Love the fact that the head rests move to support your head better."

Pros: "The crew was amazing"
Cons: "Ran over 2 hours late with no explanation"

Pros: "The seat was great, I wish all seats on the plane were that comfortable"
Cons: "Nothing, everyone was great"

Pros: "The male crew member was excellent. He was responsive and speedy with trying to find a solution. He gave me a few flyer miles for my trouble and was empathetic, which is rare."
Cons: "The tv/monitor didn’t work so there wasn’t any entertainment for the majority of the flight."

Pros: "Boarding was easy."
Cons: "I am 6' 1" tall and weigh 220, so not out of the ordinary and I felt like I was stuffed into a sardine can."

Pros: "Not comfortable a little but scary on the flight to Detroit. Way better coming back to Denver"

Cons: "Better screens for in-flight movies. More legroom or upgrade options."

Pros: "Good entertainment selection and great crew"
Cons: "Seats are more uncomfortable relative to other airlines"

Cons: "First delay notification: 1 hour 20 minutes 1 hour later, Second delay notification: 3 hours 15 minutes 2 hours later: Third delay notification: 3 hour 50 minutes Fourth delay notification: 4 hours 25 minutes Fifth delay notification: 4 hour 32 minutes No explanation for reason. Last time flying Delta."

Pros: "Early and middle seat was open!"
Cons: "Coffee tasted like fish. :("

Pros: "Delta cramps people into these planes and forces you to put your bags under a seat because they stuff at the overhead spaces. They nickel and dime you for every single thing. There was even one person I saw who had to pay for his headphones to listen to the onboard entertainment. I think Delta should quit being so cheap with the profits they make and give it back to your flying customers. It borders on gouging."
Cons: "Delta cramps people into these planes and forces you to put your bags under a seat because they stuff at the overhead spaces. They nickel and dime you for every single thing. There was even one person I saw who had to pay for his headphones to listen to the onboard entertainment. I think Delta should quit being so cheap with the profits they make and give it back to your flying customers. It borders on gouging."

Pros: "Entertainment choices were excellent, many new movies available, so I was able to see movies is been meaning to watch. There were drinks available."
Cons: "The air vents barely trickle out any air anymore. No relief to be had. Airline crews say hi and goodbye but that doesn't make them friendly."

Pros: "The crew on the airplane was great. We had 2.5 hours turbulences but the crew started to give out drinks as soon they got the ok from the pilot"
Cons: "We went in LGA to the Baggage drop off and the employee there was super rude. On the flight to New York with Delta we had to check our carry ons at the gate because it wasn't enough room for bags in the airplane.so we asked when we checked our one suitcase if we can/should check our carry ons to avoid having to do it at the gate. The delta employee told me sure no problem. He checks in my one suitcase I purchased gives me the tracking paper and says ok have a good flight. I asked him so what is with our carry ons and he told us that that would cost 25$ and we can't check those in at the drop off?!?We ended up taking the carry ons with to the gate and then off course there wasn't enough room on the airplane that we had to check it in. And surprise it was free?? We had never issues with Lufthansa, icelandair etc. with checking our bags at drop off to not needing to carry it around and than still end up to check it at the airplane. Every airline has been more than happy that we volunteer to check our bags that they don't have the trouble at the gate."

Pros: "We boarded close to on time, no hassles. Allowed my husband and me (retired military) to board early, thank you."
Cons: "LAX security is awful. We never left the airport (arrived LAX from Sydney AU) yet were forced thru security again. Had to remove shoes, was scanned and "frisked" by TSA to get to Denver. To go to Australia, Denver TSA waived the removal of shoes, skipped the scan for the metal detector and no one touched me, ditto for LAX on the trip to Sydney. Where's the uniformity or standards for TSA?? Why did I have to be subjected to this garbage on the way home?? This is why I despise flying. It makes no sense to me. This ruined what was a great vacation."

Pros: "Not much. Boarding by "zone" works ok, but is no quicker than most other boarding methods."
Cons: "Boeing 767-400ER seats had no leg room for 6'+ traveller like me. The entertainment system was so old that there were no 115v outlets or USB ports. On a 7-hour flight, that is a significant problem for travellers today with multiple electronic devices. Finally, we were not told in advance that we had to go through security twice and through US Customs BEFORE leaving Dublin. So, the 6-hour layover at JFK was a complete waste of our time as we did not have to go through Customs there."

Cons: "Very little leg room."

Pros: "Love the built in tv’s with free entertainment."
Cons: "The plane got delayed on the runway and the shut the engines off so the plane got super hot, but even after we got up in the air it never cooled down. Normally I’m freezing on flights, but I just sat sweating this whole flight. It was terrible."

Pros: "The seats had plenty of leg room and the crew was was very kind."
Cons: "My seat was uncomfortable and I was seated in the only row of the aircraft without entertainment for a four hour flight. Then on top of that the passenger next to me removed his shoes and you could smell his feet from a mile away but the flight attendants never requested for him to replace his shoes."

Pros: "The staff really helped me out getting on standby so that I didn't have to wait for a 9 hour layover. Overall great experience and great staff."

Pros: "Excellent piloting and cabin crew."

Pros: "It got me home, eventually."
Cons: "Poor communication, a 6 hour delay followed by a 7 hour layover (during which we had to sleep on an airport floor because Delta couldn't offer us any hotel vouchers). Gate agents disappeared after 7pm becuase they were due to be done with their shifts when our flight was originally supposed to leave at 6 pm. It felt like we were trapped in the movie The Terminal. Oh! And our bag was misrouted, because that was just how things went those 2 days. All in all a 6 hour trip turned into 18 hours. I could have driven home in that amount of time!"

Cons: "My daughter was stuck in SLC for 5 hours because there 1 cancelled flight and 1 delayed flight. It was very upsetting not knowing when she going to arrive in Denver."

Pros: "App is good and convenient to use."
Cons: "The app went down just as we were getting ready to board and luckily i had a printed pass and it took some extra time to check in."

Cons: "We left late, it was delayed then maintenance issues. Twice. Seating was very tight and uncomfortable, no movies or entertainment at all. U.S. flights are the worst. Even on short flights with aeromexico outside the U.S. you get movies and food. Zero stars for comfort, food and entertainment."

Pros: "Crew was all very nice"
Cons: "Flying is always uncomfortable"

Pros: "When deplaning in Denver, I was impressed that the captain was the staff who got behind my wheelchair and offered to push me up the walkway :)... New aircraft, kind staff, shorty flight!"
Cons: "Nothing disappointed, butt i didn't have any good besides pretzels."

Cons: "Excellent service excellent pilot"

Pros: "Overall, the flight was very smooth and I thought the crew did a great job."
Cons: "I know this is a federal regulation, but I have to mention it as it is part of the boarding process. For the life of me, I can't understand why it is necessary to go through security again after re-entering the country. Understandable that I have to go through customs, but going through security again is ridiculous."

Pros: "Free in flight entertainment"
Cons: "One of my bags went to Santa Fe"

Pros: "Entertainment"
Cons: "This is my third flight this year with Delta and every time we wait for the "crew" to get off from another flight. And as soon as they get there we can board. It's getting very annoying. Fix it."

Pros: "WiFi, good flight attendants"
Cons: "Would like to see Direct TV along with Delta Suite so can watch live TV"

Pros: "One male attendant from the first class cabin - super sweet and attentive to our needs even tho we're not seating in the premium cabin"
Cons: "Junior attendants in economy comfort seat - so lazy and whiny!"

Pros: "From the Ground crew to the Flight crew, you can feel the genuine care and thoughtfulness of everyone! They even remember you, if you fly often enough, and let you know how much they appreciate your business."

"Disappointed in the toilet area both flights- filthy and urine on floor everywhere both flights Boarding and texts communications excellent"

"The plane was SO hot and we waiting 30 min for one passenger to get on. Sweating. Then the plane never cooled off because it got SO hot waiting."

Pros: "Everything basically"
Cons: "Nothing"

Pros: "Crew was great."
Cons: "turbulence"

Pros: "1st class flight attendant sat through the entire flight (except for offering drinks and food early in flight). There were passengers NOT wearing masks through the flight but she wouldn't know that since she never left her seat"
Cons: "just about everyting"

Cons: "IFE was not streaming movies, WiFi on but not loading"

Cons: "Spacing people out until this covid is over"

Pros: "The crew was awesome and boarding was quick"

Cons: "There are too many announcements on the screen before you can start watching entertainment. It takes about 15 minutes."

Cons: "Short flight, would have appreciated if when asking for pretzels the flaggt attendant didn't hand me the spare bag of his pockets."

Pros: "Really enjoy flying first class."
Cons: "Excellent"

Pros: "Crew was nice"
Cons: "Could not connect to wifi."

Pros: "Not much crew stayed in back almost the whole 6 1/2 hr flight and seemed not to friendly"
Cons: "It would have been better if they had departed when they said they were going to after a delay. Flight was delayed first 1 hr then two more hours. The airline finally posted that it would depart a 4 PM and we didn't even start boarding until 5PM. Then they tried to rush us on so that everyone was standing on the HOT jetway for 10 min waiting to get on the plane. Plane didn't take off til 5:35 PM. Over all on this trip I had three flights that were delayed. I'll think twice before taking American Air again."

Cons: "The plane we needed for our flight arrived really late so our flight was then of course delayed."

Pros: "Everything was great"
Cons: "Nothing"

Pros: "Good entertainment choices."
Cons: "Uncomfortable seat with insufficient legroom wouldn't recline. Inadequate overhead storage (full flight)"

Pros: "Appreciated the pilot keeping us informed re: turbulence and avoiding it"

Pros: "Even on a full flight, there was enough overhead storage"
Cons: "Pretzels were lame"

Cons: "Flight got delayed. We paid for assigned seating for our almost 85 yo mom. And the change in flight no one asked for to get seated in the front of plane. Instead she was seated all the way in the back. It was physically exhausting for her."

Pros: "The crew was polite and professional"
Cons: "At Miami check in, American had 40-60 automated terminals available for self check, but only had EIGHT open for use. Caused a needless bottleneck and the transition from there to the bag drop was also poorly laid out and did not provide a logical nor efficient route from one to the other. fix it!"

Pros: "On time flight. We were even a little early."
Cons: "Those seats are just crammed in there aren’t they?"

Pros: "Crew was great"
Cons: "Absolutely no accommodation for seat assignments and the lady at the gate was so rude for even just asking to sit next to my fiancé even though there were tons of single people on the flight."

Pros: "No major screw-ups this time!"
Cons: "It's AA, let's not try too hard here."

Cons: "Entertainment is becoming too complicated for us old heads. Food, I still resent having to pay for something that is ed to be included in my fare."

Cons: "The sound on the entertainment system in my seat didn't work well. Also, the flight was really late getting in to Denver."

Pros: "Friendly crew"
Cons: "Tight seating leg room non existent."

Pros: "Friendly staff and helpful"
Cons: "Did not fly out of Ontario, I was being led to fly out of LAX since there was a delay. Ended up flying out of John Wayne Airport."

Cons: "Didn't like the two hour delay, especially when I was notified only a half hour before boarding! This seems to be a normal thing for American Airlines."

Cons: "Flight departure was delayed for 30 mins by a flight attendant not showing up on time."

Pros: "Movie and tv selection was good. Boarding was a cinch, we took off exactly on time, seats were comfortable, too."
Cons: "Airline misplaced my boyfriend's checked back with our duty free Portuguese wine in it. It still hasn't been delivered to him the next day. They had three hours to get the bag on the flight."

Cons: "Flight crew was late and didn’t try and make things move faster to make up time. Kept saying they wanted to go Puerto Rico and that’s where they should have been going."

Pros: "I like the in-flight attendants as they are courteous even though it was late night flight. I cannot complain at all."
Cons: "Gate agent refused to try to put my 9-year-old son to sit next to me. She said "It's full flight" right out of the bat. Well, even if that's the fact of the matter, at least, be kind in responding to customer's inquiry. My son was seated across the isle, same row, but in reality the row was not even straight. And as a little boy, he cannot sleep straight and he has to lean to a stranger's shoulder? Thankfully I got a nice gent who should have sat next to him who were so kind to exchange seat with me. It's all in the attitude.... hopefully my attitude is not as bad :-) But maybe the gate agent was so tired for it was the last flight from ONT, at 1 AM. Bless her heart! Thank you though for your help to get the plane leave on time.!"

Pros: "We arrived safely."
Cons: "I don’t like having to pay for luggage or upgraded seats, WiFi. All money makers. Wish every airline could be like southwest."

Cons: "Flight was delayed by 90 minutes because the incflight mint flight was late"

Cons: "the drink service came through pretty late in the flight. i asked for hot tea. a few minutes later i was provided with extremely hot tea. about 10 minutes later it was a temperature i could tolerate drinking. about 1/3 through the drink i was required to throw away my drink because we were preparing for landing. i understand that, fine. bad timing. it’s just a drink. what was unsatisfactory is that the attendant rudely commented “you have to give us your drink. it’s not that long of a flight.” the comment made me feel like i had done something wrong even though i had just been drinking my tea as soon as it was at a drinkable temperature. i was not impressed with the attendant. also, there weren’t any biscotti cookies."

Pros: "The first leg had awesome pasta.Then, on the 2nd leg, Philly to Denver, they had a "pay for meal" option for turkey with Chutney sandwich - again, delicious. I should add that the service was very good as well."

Pros: "it was fine. flight left on time and the crew was nice."
Cons: "that you have to pay $100+ for economy plus to get the legroom you used to get for a regular ticket."

Pros: "It’s been a while since I’ve flown American, but the aircraft was updated with a solid multimedia system, great moving map, and a standard power plug and USB port at every seat. That’s more than I expected, and was quite happy. Service was solid—no complaints."
Cons: "Good & bad — flight arrived late, but the honestly, the pilots did their level best to make up the time and managed to arrive w/in 4 minutes of the scheduled arrival. Well done."

Pros: "Confusion, delays, rude employees...you name it, this trip had it. I will do my best to avoid flying with these guys in the future."
Cons: "Flight delayed 15 hours. Poor communication and outright lies from staff. Unwillingness to help find or pay for a place to spend the night. Rude staff"

Cons: "Watched a very weird interaction between Muslim (with a hajib) women with a kiddo and desk crew. She wanted to sit next to her child on the flight and needed to switch seats to be able to. Woman was very gracious and understanding that she was asking for an accommodation. Ends up her flight to Philly had been moved to a different gate after they had found a volunteer to switch seats. Volunteer was totally unfazed but Desk crew made it seem as tho the Muslim mom was at fault for the time and trouble they had had to go through to accommodate her. She apologized profusely and was very appreciative for the trouble evernote had gone to for her. . As she walked away the crew looked at each other and shook their heads. Pretty crummy way to treat customers!"

Pros: "Good serice,"
Cons: "Good service to switch flight pattern from greenville to new bern but still a delay that cause a 2 flight connection. Lots of on-line issues with check-in, overall a stressful day, hopefully it will all work out!"

Pros: "Missed the flight. Money was not refunded."
Cons: "Nothing"

Cons: "I can't rate it because they canceled my entire itinerary without so much as an email. I did not take my flight to Wilmington via my original flight. I had to book another flight because the change fees were too expensive. I did not know that my return flight to Denver had been canceled until I was checking in a few hours before my flight. I was told my ticket had no value. Awesome! It really stings that I then had to book a new return flight, and because I am a teacher who makes about $23,000 a year, I had to book the cheapest flight, which was with American. I do not plan on giving them any of my hard-earned money in the future if I can help it."

Pros: "Flight was on time through United since we had to be rescheduled from our original flight with American."

Pros: "The crew were as nice and accommodating as they could be considering the situation."
Cons: "Three planes with "maintenance" issues and not able to fly? Including flights that weren't ours. Boarding, re-boarding, leaving four hours late and waiting an hour for bags in Denver."

Pros: "Crew"
Cons: "Had to board three times, two different planes. I understand mechanical problems, but 3 hours later, and on another plane, the captain starts making stuff up, saying that the only reason we hadn't moved in the last hour was because people were using the bathroom, then something about having to deplane because the plane couldn't back up with us on it because of some sensor? And then, surprise ! All of the sudden they noticed there was an issue with his and some of the crews' hours and we had to wait till they could locate more crew. But they gave us each a 1/3 glass of water and later a $12 food voucher which didn't even cover a meal and beverage. Whoop-de-do. 7 hours later we finally boarded for the third and last time. The crew on the other hand stayed professional and friendly."

Cons: "Seats too small and the gentleman next to me was a big guy so crowded over into my seat some."

Pros: "American Airlines is my favorite Airlines to fly. There is a little more leg room and the seats are a little wider. The staff is very professional and courteous."

Cons: "The customer service from AA representitives in the airport was completely unnacceptable and the absolute worst service I have recieved in an airport to date! One incident during this trip was as follows: When arriving in Charlotte and running to catch my connecting flight, I arrived as the lady at the desk was closing the door, she looked at me and rolled her eyes. When I went up to the desk along with the other passengers arriving from the same flight as me the AA representative said "Hurry up , I want to go home!! At a point I'm just going to cut you off and that will be it!" She was of no help to me in anyway amd was forced tonstay the night in charlotte ; Normally this would not have been such a big deal, However I am on emergency leave from the Navy rushing home because I have a very serious family emergency, that representitive was very lucky I held my temper! From now on thanks to the poor unproffessional customer service I received I will no longer be flying American Airlines!"

Pros: "I liked sitting next to my friends."
Cons: "Lack of leg room"

"I didn’t eat any of the snacks nor drink any of the beverages available on the flight. I tend to fall asleep on the plane, which is what happened. It has been a while since I have flown United, I appreciated the spacious seating, comfortable seats and improved planes. Thanks for making the flight easy and enjoyable, it seems like the company has been working on making general improvements to their flights and it’s paying off."

"No food. Got a window seat and of course 21a had no window just a perfect panel of plastic"

"Bad information from Kayak. unhelpful and confusing."

"No food…. : ( - we survived!"

Cons: "Row 39 seat F extremely uncomfortable!!!!"

Pros: "The crew was fine"
Cons: "No open seats at all. Old cramped A319"

Cons: "Video entertainment did not work properly. Stewardess reset it but audio was totally garbled. I tried it with three different sets of earphones."

Pros: "It got me on the way"
Cons: "An outlet and letting me get into Canada"

Pros: "Crew was amazing."
Cons: "It would have been nice to depart within an hour of my original time."

Cons: "More comfortable seats. More distance between passengers."

Cons: "The boarding and social distancing being funny with the process"

Pros: "Everything"

Pros: "Very good and safe"
Cons: "Everything was great"

Pros: "Clean aircraft helpful staff"

Cons: "Smelled like pee for half time we were up and announcer was very annoying , she sounded like she is about to pass out , short of breath like she needs an ambulance. Statement about wearing masks was just too much... we get it - we wear masks."

Pros: "I liked my seat"
Cons: "There was a stewardess that was very mean and not accommodating when I asked for a mask"

Pros: "Crew quiet and professional"
Cons: "Screaming child boarded"

Pros: "Very organized and helpful. I felt safe."
Cons: "Different types of snack. Nothing serious to complain about."

Pros: "Yes"

Pros: "The crew was nice. When I finally arrived in Denver, Marlin in customer service was the only saving grace for United for me. When I asked for options for an earlier flight into Rapid City so I didn’t have to wait 24 hours and miss my visit with my sister, he looked at different hubs (Chicago, Minneapolis) to see if they had any available flights into Rapid, he checked for double bookings, and when he couldn’t find anything, he put me on the standby list for the first flight out in the morning and wrote down the flight information for all of the United flights from Denver for the following day. Marlin provided excellent customer service and was a huge credit to the company."
Cons: "The flight was supposed to leave at 3:56 pm and didn’t leave until 7:30 pm. I would estimate at least 15-20 people missed connecting flights because of the delay. According to the United app, the delay initially started in Portland due to mechanical issues, which took over 3 hours. Then, there was a weather delay in San Francisco according to the gate agent - there was a ground hold and no planes were landing or flying out. At some point, I would think another plane would have been an option rather than delaying a flight for this long and disrupting holiday travel for so many people."

Cons: "I paid $100 for an upgrade on a United which turned out to be the first row, and right beside the rest room (which was erroneously showing as occupied for the first 20 minutes). The traffic made it feel like I was sitting on a bench in Grand Central Station. I chose an aisle seat but ended up mysteriously in the middle seat. I had extra leg room but if I’d eaten the free 5 pretzels I wouldn’t have been able to fit it my seat any longer. The WiFi wasn’t working for the first hour of the flight. The flight attendant got really annoyed when we didn’t look up when he came by with beverages the first time. We all had headphones on and were looking at our personal screens. The activity by the rest room was constant so we didn’t notice it wasn’t just someone waiting for the loo. The luggage took so long to come out I thought my conference would be over before I got it. Overall, I thought it was bad and confirmed why I don’t fly United. Old, dingy planes, poor service. The pilot was pleasant and communicative so there was at least that..."

Pros: "The crew was so polite and helpful."
Cons: "Nothing could be improved for this short flight!"

Pros: "For all the turbulence that we heard about, the flight was extremely smooth which I attribute to the pilot's skills"
Cons: "We kept on being told that there was going to be turbulence and that it would be too rocky to serve food/drinks - but there was limited turbulence and the flight was very smooth. There was also a delay in leaving as there was an extra bag in hold but they 'couldn't find it'."

Pros: "Fast boarding in good order"

Pros: "That I eventually made it home."
Cons: "Flight from Calgary to Denver delayed three and half hours. Informed of this delay thirty minutes before scheduled departure when our plane hadn’t even left Denver yet to head to Calgary. ( 2.5 hr flight) once finally made it to Denver was informed that we missed connecting flight to Boston. We were then informed since it’s for “weather” reasons earlier in the day that caused a sequence of delays they couldn’t accommodate us for hotel. We were given two “blankets” which were as thin as a sheet and each one bottle of water. Some other people around us received good voucherS. We did not. We walked around the airport for close to an hour looking for anyplace we could lay down and sleep. None were to be found. We tried to sleep on the floor but was so cold and uncomfortable I literally got sick to my stomach. Another fun thing added to mix. We were placed on another flight as 6 the next morning. After no sleeping at all we boarded our next flight Which was not a direct flight to Boston but would be from Denver to Newark then Newark to Boston. We were suppose to originally land in Boston at 0600 Monday. Instead we arrived at 1430 after getting zero sleep. My husband and I were also unable to sit together which was extra special for people around me because after not sleeping I continued to be sick to my stomach."

Pros: "Seats were comfortable, we were in first class. United provided a good selection of recent movies."
Cons: "United stewardesses have little to no interest in their duties. Questions were clearly an annoyance to them. The leg of flight from Denver to Des Moines was very uncomfortable, seats much to tigh, no leg room. Gate staff in Denver were exceptional. United needs to revisit their time for loading. We preloaded, I had a broken leg, I was traveling with a special needs woman. We just reached our seats when other passengers were prodding us to sit so they could board no time to settle. Not impressed"

Pros: "We were on time and the flights were excellent. Liked the way the pilot and the crew interacted"

Pros: "The flight attendants were so nice, and although our flight was delayed and hour and fifteen minutes and our layover was an hour and fifteen minutes, we were able to make our connection! Since our connection to Portland in Denver was the last flight of the night, they were able to hold it for us. This was wonderful because there weren’t many flights out that weren’t booked solid for the next day. The attendants on this flight were great about updating us with information for the connections and telling us when we would land in Denver."
Cons: "The plane was delayed over an hour for cleaning. It was frustrating to say the least."

Pros: "For the first time I did not fly on a puddle jumper. Not only was it a real jet, it had good seat comfort and leg room even in economy class. The crew was friendly and attentive. They came by with offerings of water at least 4 times for a 2+ hour flight. Contrast that with my last two 5 hour flights on Virgin and American where they came by with water — ONCE. WiFi wasn’t working for either flight and of course the lack of decent food is discouraging. The coffee has improved which is a plus. Overall, good job, United! Nice not to be jammed in like sardines for once."
Cons: "Every time I fly to Denver, we land in one terminal and your connection is in another terminal that requires a train ride to get there. ,ayovers are short — generally barely an hour. If the flight is late you stand a very good chance of missing your connection, as I’m betting happened to over half the passengers on this flight. I was the lucky exception — this aircraft was actually the connecting flight too. Why can’t all United connections be in the same terminal? It makes no sense."

Pros: "The flight was on time"
Cons: "This was a smaller plane (4 seats across). Knowing this, they didn't bring enough luggage carts, so they only brought some of the luggage to the baggage claim and didn't tell us this. 5-6 of us waited and waited and finally asked someone who told us that they had to go back to the plane to get the rest of the luggage. Those of us still waiting got to wait another half hour for our luggage. Talk all they want, United just can't seem to get it right. PS: those of us who had to wait were the ones who got to the San Antonio airport the earliest and thus our luggage was on the plane first."

Cons: "Seats to small. But I am 6'3"" and my son traveling with me is 6'5"."

Pros: "Nothing about this airline."
Cons: "The crew at the gate was really rude. Zero customer service. She raised her voice at us and another customer who was charged $50 for our carry on. Not only was the flight delayed for over 2 hours. We were not informed that we could not bring a carry on even when we were at the main entrance with an agent for over 30 mins when you entered the airport. All their staff needs new training everyone kept on giving us a different answer. We asked because of this delayed will our room be comp due to the fact we will be missing our connected flight. On the phone the agent said yes. When we got to the airport that agent said no. When we got on the plane that agent said no. When we landed in Denver that agent comp our room. We ended up booking a room making sure we had a place to stay at night. It created more work for us because we were trying to cancel our room took even more time. Definitely wanted to give United the benefit of the doubt that they were at least at the level of American Airlines. The last time we flew United it was delayed for 8 hours they ended up canceling the flight. When we called they said it was the weather and we told that agent it's mechanical issue because we are watching someone remove the engine. We will stick to American Airlines. Free entertainment."

Pros: "free movies on the flight with the united app"
Cons: "The flight attendant was late delaying boarding 20 minutes. Once they started, people were lining up to board. This is a normal behavior however, there employee decided to stop boarding because she said people were crowding. she stop boarding for another 20 minutes. Now, this was a large flight and there wasn't enough room for everyone to stand off to the side. She was rude and there was no reason for this especially when the flight attendant was already late. The plane was delayed 45 minutes due to this"

Pros: "Nothing I won't be flying united again!"
Cons: "The lady at the gate when boarding was not friendly and was not willing to help us get seats together. I was traveling with my mother, husband and two infant children. And it was like pulling teeth to get any information out of her. She did not even tell us we could board early to get situated on plane! I also called earlier that morning and spoke with a man on he phone at united who told me he put us all in the same row. That was a lie bc when we checked in at the gate to get our seats the lady said no one was sitting next to each other! That lady was rude and short tempered! Awful experience will never fly again!!"

Pros: "Upon arrival at my gate departing to Durham with a 2 year old handful. I was excited to hear the attendant call for travelers with small children to board first. The thought of boarding at the same time as everyone else was giving me anxiety."
Cons: "Once I shuffled through tons disgruntled travelers because of my "child privilege" the attendant rolled her eyes and took a deep breath at the amount of time it took me to get to my ticket. Mind you, it makes sense I would have it somewhere convenient, but like I said single traveller, 2 year old handful. She scanned my ticket and flogged her hair in the air telling me take my stuff to the front of the plane. While the other attendant tagged all my items."

Pros: "I didn't fly.I bought the ticket for my son. He had no complaints. You should ask in your questionnaire if the booked flight was for self or someone else."

Pros: "This was a short flight. The only issue was the boarding. Took a while for me to get to my seat."

Cons: "TSA took forever, other than that. My flight boards at 0540 and I got there exactly at 0545. The plane already made its way to the runway and wouldn't wait an extra 10 mins for passengers to enter."

Pros: "2.5 HR layover lost bag"

Cons: "Unable to pre-check online. Unable to check at the check in machines--had to go up and check in at the counter, long wait because there was only one clerk. We were then given a ticket just to get through security and had to check in a second time when we get to the gate for seat assignment, which is ridiculous. Why couldn't that be done at the 1st check-in? The clerk told me she will call me when she has the seat assignment/ boarding ticket but she never did and I had to go back up to ask for them when it was getting close to boarding time. At the last moment minutes, volunteers could check in their carry on for free....It would have been nice (and less hassle) to have that option at the 1st check-in."

Pros: "Once flight began it ran quite smooth"
Cons: "I chose seats when I booked the tickets. So... Not quite sure how both myself and my partner didn't end up seated together, and both ended up in a middle seat sandwiched between 2 overweight people... Are you little people profiling to break up the overwhelming number of big people? another couple with 2 kids were also broken up into distant areas on the plane. I know everyone complains about so many things, and this wasn't the end of the world, but still, it's not ideal. The seating/etc seemed more disorganized than usual for this flight."

Pros: "Great staff."
Cons: "A crying baby that say behind me."

Pros: "Nothing"
Cons: "I'm usually a patient person, but my flight was supposed to leave at 525am and didn't leave until 730. This was the first flight in the morning. We boarded, waiting 30 minutes on the plane, they told us to get off because there were computer issues. Why wasn't that checked before everybody was boarded? Once we got on the plane we had to wait another 30 minutes for the crew to get someone's luggage from under the plane. Why wasn't that done while the computer was getting fixed? I didn't get to Denver until 1040am missed my flight and didn't get to get on my connection until 500pm. In the meantime I called to get on a different flight at 1, but the guy on the phone didn't actually book me a seat. The gate people weren't very nice."

Cons: "About two hours before my flight, it was canceled after previously making an airplane switch the night before after checking in online. The I received an email while I was on the way to the airport saying that the airplane that I was going to fly out on was canceled due to airplane maintenance. While I am happy they didn't fly the plane while needing maintenance, they should have planned ahead and known of the maintenance or had a backup ready to go. Obviously it must have been something they just found, but in the big picture of things. You have to pay an way to much for a flight as it is. They should have to solve their own issues to honor their part of the contract. We (as customers) can't cancel a flight with out penalties. Why shouldn't they have to do the same?"

Pros: "Smooth boarding. Friendly crew. Got us there on time, despite a late start That included a gate change."
Cons: "Was asked to check my carry on bag, because the flight was full. Meaning they sold the seat I purchased for my wife (who was unable to make the flight). I did so, but when I looked in the overhead bin after the flight, it was empty. When we arrived in Denver, I waited at the baggage carousel, watched everyone pick up there bags, until there were only 5 or 6 bags going around. I then went to a counter behind the carousel and asked about my bag. I was only then told that my bag had been there the whole time I was waiting."

Pros: "Very friendly and helpful staff."
Cons: "The fact that we had a connecting flight to minot from Denver. Arrived late to Denver because of weather, but my stroller that I had left on the jetway in Seattle was never put on the plane which I didn't know until I got to minot. I was going to wait for it in denver, but I would have missed my flight to minot had I waited 5 more minutes. We arrived to minot only to find out that our 3 suitcases, one stroller and 2 car seats were never in the flight. Awful! And my connecting flight was even delayed an extra 55 min so I don't quite know where my things are."

Pros: "The flight was smooth. And the wine was good."
Cons: "I paid for 2 round trip tickets and because my son was not there for the first leg, they resold the seat. So they got my money and the other person's money for the same seat. I wanted both seats and paid for both seats. It is theft and should not be allowed. The flight attendant was extremely rude and dismissive. It is a poor practice. You could have at least asked first before rebooking the seat. At least have offered compensation or something. I probably would have said yes Anyway. It's the principle of the process being wrong to the consumer which only benefits the corporation."

Cons: "My flight was scheduled to leave at 4:51 pm. I arrived at the airport 2 and a half hours before my flight was to leave and I read the departure board to see that the flight was delayed due to maintenance. Then I saw that it was delayed again because we were waiting for a flight coming in from the Bahamas. Well my flight didn't take off until about 7:30 pm. I arrived in Denver around 10:00 pm which made me miss my shuttle to the Springs. I am a diabetic and was in need of my medication so I needed to get home. I spent extra money to take a bus to downtown Denver and a grayhound bus to the springs and a cab to my home. So my trip cost my an extra $55.00 dollars I didn't have. I have always taken United but after this experience, I will never again take United."

Pros: "Nothing."
Cons: "Recently United decided to cancel all of their flights to Denver due to an April snow storm. United was the only company that chose to cancel rather than delay flights. Our flight was cancelled 24 hrs before any snow fell. Their solution was to offer us another flight over 72 hrs out. After spending 6 hrs on the phone with this company (not exaggerating) I feel entitled to say that this company holds zero accountability or concern for their customers. We had to spend an additional $500 to get to our destination last minute through JetBlue."

Pros: "The crew is AMAZING!!! Personal, professionals, they go above and beyond my personal standard of customer service. Very comfortable atmosphere. Not to be mistaken with the uncomfortable seats. I like to think United doesn't overlook the work ethic their employees represent the company with on a day to day basis."
Cons: "I travel for work from Grand Junction, Colorado to Dickinson, North Dakota every 4 to 6 weeks. I always fly United. On one occasion I met family in Colorado Springs, so I bought a round trip ticket from Dickinson to Colorado Springs. I missed the second half of my round trip flight from Colorado Springs to Dickinson. I had to pay my own cab fare from Colorado Springs to Denver to catch my flight, because your plane, that i paid for a flight on, had mechanical issues and didn't make it to Colorado Springs. Second, my flight in Denver was cancelled 3 times and almost a fourth. I all but got down on my knees and begged to catch the fourth flight they tried to cancel. Third, I didn't even get to fly into Dickinson. So instead of somebody coming and picking me up in Dickinson which is a 30-minute drive from where I work, somebody had to drive 3 hours to Williston where you guys ended up getting me. Which cost me 3 hours of gas money to get picked up, instead of 30 min of gas money. I didn't get either of the flights back to North Dakota that I paid for. I've asked for the reasonable request that I be refunded 50% of the cost of the airfare and the $235 it cost for cab fare. When I contacted United about this I got the runaround from everybody. At this point I've pretty much accepted the loss, and the financial hit. I'll continue to fly United only because it's pretty much my only option. Just make sure you keep the crew around. They're great. I'd hate for the experience to go from unsatisfying, to miserable."

Pros: "Boarding was easy!"
Cons: "Customer service w crew very rude and extremely inappropriate"

Cons: "$4 for a bottle of water, cheap thin uncomfortable seats, tiny space to sit in and the girls at the desk are rude and not helpful! If you want packed planes with no space and thin uncomfortable seats and no drinks or snacks definitely fly here"

Cons: "Really uncomfortable seats that do not recline, several people constantly taking off masks, they charged for water (3$), no WiFi option or entertainment at all, tray table is too small to put anything on"

Cons: "Stewardess who had to repeatedly ask a customer to put their mask on said “I hope you get it”. Referring, of course, to COVID-19. Horrible."

Pros: "Denver Crew is RACIST, HYPOCRITICAL & CONTRADICTORY! Making mask an issue ONLY there not from RDU, JUST THERE IF YOU ARE BLACK"
Cons: "Not being RACIST PERIOD"

Pros: "No glitches —- everything ran smoothly."
Cons: "My KTN was incorrect and Frontier was unable to correct."

Pros: "Seat"
Cons: "Space"

Cons: "They didn’t offer any food or drinks they could of pre-package snacks and water for the passengers."

Pros: "The aircraft was very clean."
Cons: "The staff was incredibly annoying. They incessantly got on the PA and fussed about masks, when no one was violating the rules."

Cons: "The only negative was the weather!"

Pros: "The emergency row seat was good."
Cons: "The hidden carry on luggage fee is terrible."

Cons: "Upholding mask expectations! Several passengers deviated without accountability checks by crew."

Pros: "They gave us the emergency row with more space which we liked!"

Cons: "Boarding process could have been better. I felt I was poorly informed of the technical issues and would have liked a better understanding of what was going on. Boarding and then having to deplane right before departure due to a tire inspection fail was unnecessary. I feel as though the inspection should have happened prior to boarding."

Pros: "The crew was reassuring when we were running to board and helped my husband, who had trouble walking."

Cons: "Gate agents didn’t call nor enforce any kind of boarding order other than preboard for military/disabled"

Pros: "Friendly staff"
Cons: "Gate agent wasn’t available until boarding"

Pros: "Boarding was quick and easy. Stewards were courteous."
Cons: "Seats are fairly hard and narrow for a large individual made worse by the protruding arm rests."

Cons: "No masks requirement and beverage/snack cart"

Pros: "Cheap"
Cons: "Lost my luggage and ruined my trip."

Pros: "Masks required. Temp check required."
Cons: "No social distancing"

Cons: "The woman sitting across the aisle from me wasn't wearing a mask. I asked her to put one on and she refused. I asked a crew member to ask her and she also didn't comply. It was uncomfortable and I was disappointed the crew didn't do more to force the issue."

Cons: "Uncomfortable seats."

Cons: "frontier sucks horrible"

Pros: "Amazing it took an international pandemic to finally convince airlines to board from the back front."

Cons: "Frontier charges for the first carry on after your personal bag. Aside from that, no issues."

Pros: "Fast boarding"
Cons: "Crew didn’t wear masks correctly."

Cons: "Good service"

Pros: "Everything"
Cons: "Don’t charge for food"

Pros: "It was good"
Cons: "All those extra fees even for a drink!!! First time on frontier not sure if I would use it again"

Pros: "Though I was the first to web check in, we were not assigned seats together. The cabin crew were kind enough to arrange seats together on board."

Pros: "Easy check in"
Cons: "Fair was little high for this flight"

Pros: "Early, friendly staff"
Cons: "No WiFi"

Cons: "5 hour delay, horrible last minute communication. Second time in a row this has happened with Frontier. Will never fly them again at any price."

Pros: "Boarding was fast, Polite staff, Very nice crew."

Cons: "Due to all the delays on my first flight I just decided To re-book a different flight back I will never fly with this company again terrible the only reason they get a star because I can’t give them nine terrible"

Pros: "Nothing"
Cons: "Late. Late.Late Staff seemed rude"

Pros: "We were a little early, which was nice."
Cons: "The flight attendants spent most of the flight giggling at the front of the plane, and had to stop and restart several announcements after saying the wrong thing or having to take a break to stop laughing on the intercom. They also gave me a credit card pitch over the intercom, which was really annoying. The plane was pretty dirty, my tray was really gross with white stuff all over it, and the trash in the bathroom was overflowing, so I had to stuff my paper towel in there to get it to fit. I just wanted a cheap airline, but they split up your group unless you pay extra, and you have to pay for EVERYTHING, including any drinks or snacks. Bags were expensive. I ended up paying almost $700 on a flight that was supposed to be about $450. $21 each way per person to sit with eachother, like $50 for a single checked back each way, blah blah blah. Poor experience, and it was MORE expensive than the other flights with bags and seats included. The lines were also extremely long with only a single person at each stand in each airport."

Pros: "If its delay please let us know by texting or email please. I came there earlier 8.00pm And have to wait about 4 hours... No complimentary food... Just wait at the 51B Is so hard to get some power to recharge all my gadget... Overall the staff are good... I'm so tired, i don't know are they give a food/no?"
Cons: "No. 1. Delay 2. No power for rechargeable 3. No food at least a cup of tea/coffee for waiting that long."

Cons: "From the moment that I get off the plane to catch my flight connections to San diego, I thought the gate was far but its right the corner so I dont need to rush lol"

Pros: "I liked that there were no issues with my flight I was able to just board , get there and have no problems"
Cons: "I don’t like the fees for everything. It kinda just made me annoyed that there were fees attached to everything that doubled the cost of my flight."

Cons: "It showed in my booking that I can carry a Carryon bag but had to oay ectra 50$ for the same as only a personal item was allowed. I found the service totally unsatisfactory. The website shouldn't make false claims if they cannot adhere to it. I will definitely avoid using this for my bookings again."

Cons: "I did not like the idea of refreshments being sold on board. Even if it means incorporating 3-5 dollars for refreshments. The bills will give better outlook. Moreover that can still be accommodated it the current bills"

Cons: "Nice crew"

Pros: "Got me where I wanted to go,"
Cons: "I am allergic to dogs and cats. This is a growing problem for me because it seems that the rules are looser and people keep a pet on their lap and service animals are increasing. There were two on board ( One not a service animal, the other one was) and I spoke to the gate agents who were mostly uninformed and unsympathetic . There is an overall lack luster with everything about FRONTIER and I get the no-frills / buy what you need concept, but there is no accommodation for people with serious allergy, and there is an increasing ability to get the certificate to have a service animal for just about any malady it seems. I respect the need for a service animal. However the passengers who have to sit in an airplane with recirculating air with dander are largely misunderstood. I asked to speak to a FRONTIER supervisor and there was no one to be seen and I got a stock answer from the gate agent in Orkando who was chewing gum so hard, it was difficult to have a conversation. Eventually I gave up my good seat to go further back from the animals who were seated up in front rows. That makes it worse when you have to pass by them to get back to your seat. And again, the gate agents were not helpful in getting me on the plane pre-boarded. Yes I take medication and sometimes I am OK and for the record, there is no truly "hypoallergic dog" for me. That is the excuse I also get. It is tough to live with when people around you do not understand . I was also recently deplaned on United airline because of this problem. I cannot stop flying it is always something now I have to worry about until I get to the gate. I do not wish it on anybody but if you had the reaction of welts itching and swelling it would be better understood as something that needed to be addressed by the airlines. Thank you for reading this long note."

Pros: "I really don't understand"
Cons: "It's too much delay that cost me almost my job. I had almost 7hrs transit in Denver and the plan has been parked there for almost 7 hours and when we start to depart, all frontier employees start doing things they supposed to do an hour a good. I assum frontier carry between 150-250 ppl, if 10 frontier employees finished their an hour check things around, it would be very very helpful instead westing 150-250 hours of passengers. When I saw the commitment of each employees in under cover boss show I was so excited to fly, but I don't think I can afford to the delay."

Pros: "The ticket counter personnel in Denver and in Nashville were wonderful, helpful, and took care of everyone quickly. That part was great. And the plane didn't crash."
Cons: "Frontier has so many problems - from a terrible website with very confusing instructions where even calling the help line was a nightmare - to charging for every little thing (seats!!, water!!, baggage of all kinds, etc.) When we arrived at the Denver airport we sat on the plane for AN HOUR waiting for a gate so we could get off. The stewards kept saying "just a couple minutes" so obviously someone was lying to us. AN HOUR - really - and no one could solve the problem and find an available gate so we could deplane?!? So we arrived an hour late, which is ridiculous."

Pros: "Both flights were early."
Cons: "45 minute wait for baggage in DEN. No personnel available to check passengers in in PIT. We waited for 30 minutes for them to show up. Different prices for baggage depending on whether you book it when you book the ticket or if you do it at the airport. Charging for a seat reservation is nonsense. Of course so free food, not even peanuts! I am so tired of being nickeled and died by airlines that I now will actually refuse to make certain trips unless I can drive. No other industry in this country treats its customers as shabbily as the airline industry."

Cons: "Didnt have someone at the gate to check my luggage or even to put in on the next flight. The security then took all of my stuff since I had to try and take it through the tsa and check it at the gate. Overall annoying and I would like to have my money back for the bags that I didn't use!"

Cons: "When we checked in at the counter they did not inform us about carry-on charges. Most airlines don't charge fees for carry-ons, but frontier does. We had to pay $60 each for small carry-on at the gate. This practice is unfair to people who are not familiar with cheap airline business models. They should be more transparent about their fees on the ticket and at the counter. This cheap airline is so cheap that they couldn't hire enough staffs at the DCA gate. There's only one staff checking in the tickets at the gate and we had to wait until everyone went into the plane to pay for our $60 check in fees."

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COVID-19 information

Safety measures for airlines flying from Ontario to Denver

Airlines flying from Ontario to Denver have enacted additional safety measures and adjusted policies to better accommodate travelers. Policies vary by airline.

Heightened sanitation

Daily cleaning, installation of cabin HEPA filters on flights from Ontario to Denver

Mandatory masks

Masks required on board, masks provided on flights from Ontario to Denver

Social distancing seating

Middle seats unavailable to book on flights from Ontario to Denver

Pre-flight testing

Testing for antibodies, testing for symptoms for flights from Ontario to Denver

Book cheap flights from Ontario to Denver

Recent round-trip flight deals

11/3
Wed
nonstop
Frontier
2h 21m
ONT - DEN
11/6
Sat
nonstop
Frontier
2h 28m
DEN - ONT
11/3
Wed
nonstop
Frontier
2h 21m
ONT - DEN
11/6
Sat
nonstop
Frontier
2h 28m
DEN - ONT
12/6
Mon
nonstop
Frontier
2h 21m
ONT - DEN
12/9
Thu
nonstop
Frontier
2h 22m
DEN - ONT
11/16
Tue
nonstop
Frontier
2h 20m
ONT - DEN
11/30
Tue
nonstop
Frontier
2h 31m
DEN - ONT
12/1
Wed
nonstop
Frontier
2h 21m
ONT - DEN
12/5
Sun
nonstop
Frontier
2h 22m
DEN - ONT
11/2
Tue
nonstop
Frontier
2h 21m
ONT - DEN
11/6
Sat
nonstop
Frontier
2h 28m
DEN - ONT
11/2
Tue
nonstop
Frontier
2h 21m
ONT - DEN
11/4
Thu
nonstop
Frontier
2h 29m
DEN - ONT
12/1
Wed
1 stop
Frontier
3h 56m
ONT - DEN
12/5
Sun
nonstop
Frontier
2h 22m
DEN - ONT
11/30
Tue
nonstop
Frontier
2h 17m
ONT - DEN
12/7
Tue
nonstop
Frontier
2h 31m
DEN - ONT
12/7
Tue
nonstop
Frontier
2h 17m
ONT - DEN
12/11
Sat
nonstop
Frontier
2h 29m
DEN - ONT
11/3
Wed
nonstop
Frontier
2h 21m
ONT - DEN
11/10
Wed
1 stop
Frontier
4h 15m
DEN - ONT
10/30
Sat
nonstop
Frontier
2h 21m
ONT - DEN
11/2
Tue
1 stop
Frontier
5h 06m
DEN - ONT
11/10
Wed
1 stop
Frontier
4h 02m
ONT - DEN
11/13
Sat
nonstop
Frontier
2h 28m
DEN - ONT
11/5
Fri
nonstop
Frontier
2h 24m
ONT - DEN
11/7
Sun
nonstop
Frontier
2h 25m
DEN - ONT
1/5
Wed
1 stop
Frontier
3h 57m
ONT - DEN
1/8
Sat
1 stop
Frontier
4h 16m
DEN - ONT
12/2
Thu
1 stop
Frontier
9h 28m
ONT - DEN
12/5
Sun
nonstop
Frontier
2h 22m
DEN - ONT
11/3
Wed
nonstop
Frontier
2h 21m
ONT - DEN
11/9
Tue
1 stop
Frontier
14h 51m
DEN - ONT
2/12
Sat
nonstop
Frontier
2h 16m
ONT - DEN
2/22
Tue
1 stop
Frontier
10h 51m
DEN - ONT
10/27
Wed
nonstop
Frontier
2h 21m
ONT - DEN
10/28
Thu
nonstop
Frontier
2h 28m
DEN - ONT
11/10
Wed
1 stop
Frontier
4h 02m
ONT - DEN
11/17
Wed
1 stop
Frontier
4h 15m
DEN - ONT
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Recent one-way flight deals

11/11
Thu
nonstop
Frontier
2h 20m
ONT - DEN
11/2
Tue
nonstop
Frontier
2h 21m
ONT - DEN
10/28
Thu
nonstop
Frontier
2h 18m
ONT - DEN
12/1
Wed
nonstop
Frontier
2h 21m
ONT - DEN
10/21
Thu
nonstop
Frontier
2h 18m
ONT - DEN
1/13
Thu
nonstop
Frontier
2h 17m
ONT - DEN
10/22
Fri
nonstop
Frontier
2h 21m
ONT - DEN
11/10
Wed
1 stop
Frontier
4h 02m
ONT - DEN
11/2
Tue
1 stop
Frontier
4h 55m
ONT - DEN
12/22
Wed
1 stop
Frontier
3h 56m
ONT - DEN
10/25
Mon
1 stop
Multiple Airlines
14h 06m
ONT - DEN
12/25
Sat
nonstop
Frontier
2h 19m
ONT - DEN
11/13
Sat
1 stop
Frontier
4h 02m
ONT - DEN
11/7
Sun
nonstop
United Airlines
2h 19m
ONT - DEN
11/1
Mon
2 stops
Multiple Airlines
8h 48m
ONT - DEN
11/5
Fri
1 stop
Delta
5h 11m
ONT - DEN
11/21
Sun
nonstop
United Airlines
2h 19m
ONT - DEN
11/13
Sat
2 stops
American Airlines
10h 31m
ONT - DEN
11/4
Thu
1 stop
Alaska Airlines
8h 43m
ONT - DEN
10/23
Sat
1 stop
Multiple Airlines
7h 42m
ONT - DEN
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