Find cheap flights from Ontario to Denver

Find cheap flights from Ontario to Denver

Round-trip
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Washington (WAS)
Denver Intl
Mon 1/18
Mon 1/25
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Good to know

Low season

August Best time to beat the crowds with an average 6% drop in price.

High season

February Most popular time to fly with an average 21% increase in price.

Average price round-trip

$617 (avg. price over the last 2 weeks)

Good deal round-trip

$357 or less

Good deal one-way

$169 or less

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Top 5 airlines serving Ontario to Denver Intl

Scores according to KAYAK customer reviews

7.9
Delta
Overall score based on 28,916 reviews
8.1
Boarding
7.8
Comfort
8.5
Crew
7.8
Entertainment
7.5
Food
Airline reviews

Cons: "Not really an experienced flyer. Overall the flight seemed good. No issues with airline or airport. Just don’t understand self-important people that feel compelled to push the overhead storage limits with their bags."

Pros: "non stop flight"
Cons: "Crowded, small plane. No air after people had boarded while fuel was being replenished (dangerous?), sitting at gate for 20minutes. This, after a 2 hour delay. Then a rough landing in Minneapolis- plane brakes sharply and suddenly, shuddered to a taxi rate of speed. simple snacks, not very good."

Pros: "Nothing"
Cons: "Worse experience ever, flight delayed, lost connection, many hours in phone trying to fixed and anyway lost the flight, spent so many time at the airport with the front desk so disappointed"

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

Pros: "Our flight crew were great. Pilots were great too."
Cons: "I missed my connection due to weather in Minneapolis. Was diverted into Milwaukee, but nope we are diverted to Chicago, but wait no we go to Milwaukee. Deboard into a close gate area. Rest rooms were closed. Then once refueling is done get back on and make Minneapolis at 12:15 am. Connection missed"

Pros: "Friendly crew."
Cons: "Slow boarding."

Cons: "No charging outlet."

Pros: "The crew was great and super nice!"
Cons: "Screens with games, more leg room, and not having kids behind us messing with tray tables the whole flight."

Pros: "I liked the touch screen displays in each headrest. Seats and leg room comfortable"
Cons: "Boarding was somewhat unorganized"

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: "By"
Cons: "A three hour delay on the first flight and a hour delay on the second..."

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: "Crew was friendly!"
Cons: "Plane wasn’t clean"

Pros: "Free drinks and snacks - great entertainment system (please read this Frontier)!"
Cons: "Boarding process was agonizingly slow and ineffective"

Pros: "JFK to Denver the flight Attendants were once again great. Lots of entertainment choices again. The usual rough air coming into DIA."
Cons: "From JFK to Denver the seats were to close for leg room by an inch or two. The temperature was hot most of the flight."

Pros: "Nothing."
Cons: "Flight left 2 hours late. Did not get adequate cabin service. Put in the back in an awful seat."

Pros: "Airline and airport staff were great"
Cons: "There was no time to eat. Nothing other than snacks. The time allotted was *barely* sufficient to get from gate to gate. We were starving when we got to our destination."

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: "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."

Pros: "The flight attendants were helpful, the flight was smooth."
Cons: "I was unable to check in online without a delta confirmation number and I had booked through west jet. The flight was delayed 40 min so I arrived later and I was removed from the flight. I got through security and customs with plenty of time and managed to get back on the flight. It was all around just annoying."

Pros: "Not much to like here. The new crew was pleasant"
Cons: "Old crew was surly. Plane had much problems and finally replaced. Left 5 hrs late. Delta claims it doesn't have to compensate for a late flight - just a cancelled one so guess which this was The baggage fees are obscene and the gouging of the customer is immoral. No wonder people hate the airlines."

Cons: "Excellent service excellent pilot"

Pros: "The flight attendants were great! Super friendly and helpful with everything!"
Cons: "I'd love slightly larger snack portions."

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: "Flights were both on time and boarded quickly. Crew was wonderful!"

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

Pros: "The flight being on time, friendly staff, clean aircraft.i"
Cons: "It was a morning flight from Toronto to Omaha via Minneapolis and unfortunately coffee wasn't served. Or maybe it got over."

Pros: "My first and last time flying Delta! Everything that could have went wrong, did in fact go wrong. We were re-booked on connecting flights different then the one we originally booked and weren't even notified. They have a Delta app, but it doesn't even work right. Unless you physically go to the gate to check to see if the flight is on time, that is the only was to find out if you are re-booked onto a different flight or not. I have never flown an airline that re-books you on a different flight when they feel like it. I wouldn't recommend Delta Airlines to my worse enemy!"

Cons: "The boarding process was chaotic, half the time the staff did not use the PA system. They were not clear on who needed to do a passport check. Started to read names off then just gave up and said "a lot of you""

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: "I love the new snack choices! Way to go Delta for offering Kind bars now!! This is awesome."
Cons: "Tiny old plane, props blocked my window view, no entertainment system."

Pros: "The staff of the flight were very friendly and attentive. They were great!"

Cons: "I'm tired of Delta making it IMPOSSIBLE to experience benefits of my loyalty. I flew literally AROUND the world in the past 6 months and it STILL doesn't qualify me for anything more than Silver elite? Seriously? When you use a voucher because of their error to lower your ticket price, but still pay cash for it, why does that then automatically exclude you from upgrades? Poor customer loyalty, in fact, non-existent these days."

Pros: "Early arrival. And service"
Cons: "I was assigned very last seat and there is no reclining option."

Cons: "long wait and delayed flight"

Pros: "Crew smiling at the end of the flight."
Cons: "Cheap coffee (although it says Starbucks, I have tried better)."

Cons: "Please review the message I sent concerns Atlanta hartsfield."

Cons: "I thought I stated this before about the flight (5), Treatment (5) all the rest (5), but Atlanta Airport does not support disabled people using scooters to get from one plane to another. With more people using these, only a matter of time until a reporter males this an ISSUE. Meanwhile I will make every effort NOT to use ATLANTA HARTSFIELD. This includes my wife, also using a scooter."

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

Cons: "I showed up 2 hrs before the flight. Was told the flight from Toronto to Minn was delayed 30 minutes and go stand in line to speak to an agent. There were approx 20 in line yet only 2 gate agents at 4:30pm. One of the gate agents kept helping the Premium members and bypassing the standard line. The other agent was in a coma as his average person at counter was 10 min. Finally get to counter and they hand me a boarding pass going via Salt Lake in 30 minutes. But has a 3 hrs layover in SL. I then get to US Custom check for US residents re-entering and the line was a good 30 minute wait. You would think the Delta folks would have accounted for that line. I had to ask everyone in front of them if I could skip in front as the plane was now departing in 10 min. I had to then run on a bum knee and was the last to board. The agent at gate was saying we were calling your name but did they think I could have been stuck in customs? On that short of a window they should have walked me through Customs to make sure I got on a flight they wanted me to take versus my scheduled flight."

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."

Pros: "Very professional and caring."

Pros: "plane had individual movies for free with each seat!"

Pros: "Reachung my destination"
Cons: "I can appreciate the stress on everybody's mind but this was the worst time i had flying. Short story, 10am thursday-7pm friday. Less short story, 4 airlines, 3 security screenings and 2 customs stop points.7 delays, 2 cancels and 1 miss. It was a ping pong nightmare and 2 times it was suggested i take a bus...after i spent the money on a plane ticket with no offer of compensation, food vouchers or hotel accommodation. Delta has to convince me to come back to them."

Cons: "Flight was repeatedly delayed. Ended up being over 3 hours late to depart due to weather. Another delay due to mechanical problems."

Cons: "I've only experienced delayed flights with Delta ... and this was no exception. It wasn't weather-related, nor a late flight delivering a plane - just no ground crew to service the plane between flights."

Pros: "nice snack"

Pros: "Direct flight to JFK using Delta. Was not aware that I was NOT flying on West Jet therefore encountered problems searching for a way to check in online. Ground crew airport check in at the Delta counter and at the Boarding gate was helpful and efficient. However request for Special Assistance in Toronto was poorly handled. We did not accept the conditions offered to us as one wheel chair operator had to push 3 passengers and I had to wait for him to return to me after two people were brought to their gates. My Husband had to wheel me in to my gate."

Pros: "Boarding was fast and efficient. Crew was friendly. We got drinks and snacks twice on the 4.5 hr flight."
Cons: "Seats were uncomfortable. The cushions are getting thinner with every new plane. That makes for hard surface and an extra rough turbulence experience. Arm rests are almost non existent again very uncomfortable on a long flight. No Monitors in seat so no uou have to 1 have your own device or RENT one from WestJet. No place you put the device, so you must hold it in your hand for hours. VERY uncomfortable."

Pros: "Though there was lots of air turbulence the Crew added humour in executing their duties which made the trip cautious, calm and added comfortable."

Pros: "This was my first time flying Plus and I don't think I can ever go back. Worth every penny."

Pros: "Easy check-in, bag drop off even with elderly person traveling with us. Great staff at the airport."
Cons: "Nothing....."

Pros: "on time ,friendly staff"

Pros: "A bit more seat room. I'm a tall guy and was a bit cramp"

Cons: "Everyrhing was great"

Cons: "Trip from Toronto to NYC should not be so long. Between boarding getting delayed to finding a gate in NY laguardia, it was just extremely exhausting."

Cons: "Hate to have to buy the food!! No entertainment"

Pros: "service"
Cons: "There is none."

Pros: "Only the boarding was good"
Cons: "My luggage was damaged"

Pros: "In-flight crew was great!"
Cons: "Manager and crew at the check-in counter are incompetent!!!"

Pros: "Seats"
Cons: "Nothinh"

Cons: "Flight was delayed over an hour and boarding took forever (much longer than usual and I fly pretty often)"

Pros: "Excellent service and departure time"

Pros: "Nothing"
Cons: "Everything. FIVE hour delay no apology no meal served and absolutely rude customer service by flight attendants. Will never ever travel at West Jet."

Pros: "The lounge was fairly comfortable. The staff was very nice, however, our flight was delayed 5 times! We were supposed to leave at 3:30 but we didn't leave until 7:00. Crew on the plane was super friendly and I think the pilot was great too. Skilled and always kept us informed of what was about to happen. Was only just over a 2 hour flight so no real food was needed nor was there entertainment. The 'in flight' menu was reasonably priced. Staff on the other end was helpful as well."
Cons: "Small plane, seats and aisles. But hey, you get what you pay for."

Cons: "The flight ran out of all sandwichsd and croissants before we were served. I think that was poor planning. The rest was all not healthy food, so we had nothing to eat!! Norma Sukornyk"

Pros: "They were quick and efficient gwttong everyone ready for a on time depature and we actually arrived a bit early too."
Cons: "Nothing at all"

Cons: "The long delay, 2 kids crying continuous, no place to smoke, no one explained to me that I had to pick up my luggage in Toronto! So now my suitcase is delayed! I was told that it would go straight through to destination. I will never use Delta again! And I will not fly through Detroit or Toronto again!!!"

Pros: "Smooth flight, food wasn't to bad either"
Cons: "The amount of juice or drink you get could be a bit more"

Pros: "Comfortable newish aircraft. No entertainement, but it is ok for a short flight; same with food."
Cons: "They misplaced my luggage, I received it about 36 hours later. Most important: they never called me for updates (contrary to their own information sheet). I had to call several times; their online follow-up is badly set up, too."

Pros: "I was upgraded for free, and everyone was incredibly nice and great at their jobs!"

Pros: "Cabin crew was excellent, very professional, friendly, and helpful. The flight itself was smooth, and on time."

Pros: "Nothing"
Cons: "Nothing"

Cons: "Took 30 minutes from push-back to runway in TO. Cabin was unpleasantly hot."

Pros: "Nothing."
Cons: "Flight delayed 1.5 hours because incoming plane did not arrive. Finally took off 2.5 hours late. Just in time to arrive in Charlottetown to a severe thunderstorm. Circled til low on fuel then flew to Moncton. Refuelled and flew back to Charlottetown, arriving at 3 a.m., four hours late. The weather delay was understandable but WestJet's poor scheduling created the problem. Worst of all, the airline never told anyone what was going on, not the passengers nor the people waiting for them at the airport. Total silence. Unbelievable but typical for airlines."

Pros: "It was fast, friendly and over all made me impressed."

Pros: "Smooth, cost effective and friendly staff."

Pros: "As always with Westjet the crew was great, I got upgraded to Plus seating which was a nice surprise."
Cons: "I did experience a technical glitch which didn't let me check in online or with the kiosk due to the system thinking I still owed a flight-change fee from months before. But the woman at the check-in desk fixed things up and upgraded my seat."

Cons: "Flight kept getting delayed other then that was great"

Pros: "NOTHING"

Pros: "The crew was OK, just a bit too patronising and hyper"
Cons: "Seats were damn uncomfortable and tight. The attendant making the announcements spoke soon fast, you had to wonder if she is running a marathon....I could hardly hear her full sentences. One of the serving attendant was a tad patronising and slightly annoying. Like no one wants to listen to "innuendos" at that time of the night."

Cons: "Lack of access to entertainment without having our own personal device to view and having to download an app to be able to view entertainment"

Cons: "4 hour flight at dinner time. No food. What were they thinking? They ran out of sandwiches after the first row of passengers. Why even bother with menus when there is no food to support?"

Pros: "Staff were super friendly and welcoming"

Pros: "Everything was good, haven't used westjet in a long time as I live in the states now. Will use them as often as I can."

Pros: "The free drinks and snack"
Cons: "The check in kiosks couldn't read passports well so we had to go check in at counter and the two agents were not adequate because our wait was well over 1/2 hour."

Pros: "Very positive and smooth experience. Love the app and free wine!!!"
Cons: "None that I can think of. I recommend this airline to anyone."

Pros: "Comfortable seating and a plug for my phone"
Cons: "We were delayed ... was supposed to take off at 7:30 didn't take off until 9 .. I've sat on this plane longer than I was in the air"

Pros: "Quickest flight ever."

Pros: "Held up at YYZ for "lightning" beyond West Jet control."

Pros: "Flight left on time and staff were polite"
Cons: "PA system could be better"

Pros: "The crew and staff as a whole were very accommodating"
Cons: "Nothing to be honest was a great experience"

Pros: "It was a last minute trip, but I was able to bookwhat I needed fairly easy. I was given a lot of options as far as time and price."
Cons: "Sometime a lot of options can be a little stressful and/or overwhelming, but kind of expected with this type of booking site."

Pros: "Darim made my flight much more enjoyable and comfortable. Great flight attendant."
Cons: "I paid extra to select my seat earlier but my headset slot was not working and more than half the channels were not working anyways."

Pros: "Constant thanks from crew for the passenger patience with delays due to flight crew, and then weather delays - 2 hrs total Liked the captain came out to speak, clearly I might add, to explain the weather delays and provide updates..."
Cons: "Can't complain about what was beyond my control, but flight crew needing to come from another flight and then the other side of the airport to set up, resulting in hour delay - seems like alternative should have been available or system needs a process review to improve efficiency"

Pros: "The gate and air crew were very friendly. Flight right on time."
Cons: "Not much legroom."

Pros: "Everything was good Quick easy boarding Friendly air crew Love Westjet!!"

Pros: "On time flight"
Cons: "No on board entertainment. iPads did not work"

Cons: "Food quality"

Pros: "All was ok accept they charge 32dollar for bag."
Cons: "Travel with free bag."

Pros: "On time,"
Cons: "WiFi didn't work."

Pros: "Flight crew was nice"
Cons: "the small jets are so uncomfortable."

Pros: "Pretty standard flight"
Cons: "Inconvenient timing and overcrowded with obnoxious children sitting on laps. No attempts made to change their behavior by crew or parents."

Pros: "The plane looks like new. Great seats, phone and tablet holders at the seat back, USB outlet and a smooth flight."
Cons: "The WiFi did not work and so no entertainment for a flight of almost 4 hours."

Cons: "3+ hour flight with no TV/ entertainment"

Pros: "Boarding was a breeze"
Cons: "N/A"

Pros: "Wonderful, again. Will fly American any chance I get!"

Pros: "The onboard entertainment selection was excellent; great movie selection, wifi connection, and flight details. A winner! So much so that I chose to binge watch movies and not sleep!!"

Pros: "Friendly crew. Due to the apparent regularity of excessively delayed American Airlines flights, they had the staff at O'hare bring a cart filled with cheap canned juice and Diet Soda to lessen the blow of their consistently delayed flights."
Cons: "Like every other American Airlines flight I've ever been on, it was delayed. Including the American flight from Denver to Chicago. We pay entirely too much money to these airlines for them to deliver such painfully mediocre service and consistently delayed flights. I recommend that this airline do a SERIOUS audit of their Preventative Maintenance/Service division across their hubs. If I fly American, I would bet my entire checking account that the plane will be delayed well over 2 hours."

Cons: "the new seats are awful"

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: "Crew was really understanding of the frustration and were helpful. Plane was clean and newer."
Cons: "Delayed due to weather... it happens. Just frustrating being delayed on the last flight of the day."

Pros: "Friendly crew"
Cons: "Zero Entertainment. Flight delayed around 30 minutes, which gave me a heartburn as we had to catch the next flight. No priority plus lounge near this gate in Toronto"

Pros: "Tv and power outlets"
Cons: "This one attendant didn't get her name but was very cold to me"

Cons: "Long delay"

Cons: "plane had mechanical problems - new plane and gate and an hour delay. - first drink should have been free"

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: "Missed that flight because my finair was delayed at Helsinki"

Pros: "Crew"
Cons: "Small plane"

Pros: "I liked having a window seat."
Cons: "My screen was broken, so for 6 1/2 hours, I was unable to watch any movies and didn't see the safety video either."

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: "Crew was apologetic."
Cons: "PHL ground stop no known reason. Good weather. Even pilot was at a loss. 4 hours total delay, 3 of which spent in tarmac."

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!"

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: "Everything"

Pros: "No excuse on a night flight does the temperature to be 80 plus degrees on the plane."
Cons: "The plastic seats and extreme temperature was brutal. They shut the AC off of down somehow."

Cons: "The fact the flight was delayed for 5 hours due to weather."

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

Pros: "The plane was sleek and clean. I had a good amount of room even in coach!"

Pros: "The check in process with the kiosks. It was very easy."
Cons: "They ran out of sandwiches that we had to pay for. We didn't have to do that on the Aer Lingus flight, which was for the same amount of time. In the other flight we had choice in entetainment."

Pros: "Flight was good overall , free pretzels were tasty. Drink service on point."
Cons: "Crew came off as annoyed the whole time. Glad I didn't pay the $$ to upgrade my seat."

Pros: "Nothing. AA is the worst airline. Period."
Cons: "Rude flight attendants, delayed flight (as always), just AWFUL."

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."

Cons: "Flight was delayed and then extended by 2 hours due to weather."

Cons: "Uncomfortable seats Crying child"

Cons: "The flight was 3 hrs late, of which 1.5 before boarding, and almost 1.5 stuck in the plane."

Pros: "Entertainment."
Cons: "We sat on the runway for 3.5 hours while the crew cleaned up a fuel spill and we waited for a different co-pilot."

Pros: "I fly this route with American pretty often. The cabin crew was good. Everything else seemed sub par."
Cons: "Our take off was delayed, officially due to fueling the plane, but if the plane wasn't fueled ahead of time, someone failed to do their job properly. Also, while I'm starting to think that A320s just suck mechanically for landing (they always seem to land harder than a 737), this one seemed a little extra rough."

Pros: "We were able to get to Denver"
Cons: "Jammed in like sardines, rude flight staff, extremely hot aircraft for November"

Cons: "Unexplained delay in leaving but only arrived about 10 min later than scheduled. Took an hour from pulling into the gate for bags to arrive though which caused me to miss my shuttle. Never had to wait more than 15 min for any other airline at DIA."

Cons: "They did not check the toilets before we left so we were diverted to St. Louis and I arrived in charlotte 3 hours late"

Pros: "Flight not entirely sold out. So they let my 14 month grandson have an empty seat between my daughter and I. That was a great gift since he doesn't sleep and is jumping and crawling all over the place. And I'm sure the other passengers were breathing sighs of relief!! Also super smooth landing and nice flight attendants."
Cons: "Flying with an active 14 month old toddler boy and of his "stuff" is nothing less than anxiety provoking. Not much the airline can do.."

Pros: "The departure time. This left enough time to get to the airport and go through security without rushing!"
Cons: "Sitting in the middle Paying for luggage ( I wish Southwest flew out of ORD)"

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: "When your on your honeymoon it sure would be nice to have a seat next to my husband like we requested."

Pros: "Very friendly staff"

Pros: "The plane was new on the interior and comfortable."

Pros: "On time and good price""
Cons: "Don't like the communist inflight movie choice shown? Other option than pretzels for snack?"

Cons: "I was made to pay for my carry on because of weight. I didn’t understand that when I booked. I am also certain that many other carry ones were more than 12 kilos."

Cons: "we took off 3 hours after our actual take off time due to the cargo door not closing. we sat on the plane and they kept the exit door open causing very cold air in the plane. the door should have been closed to keep the heat in. for the 3 hours we were not given or even asked whether we might want coffee or something to drink or some kind of snack, they gave the business class something tho."

Cons: "Late flight the crew did.t care and many people missed connections. The customer service at the airport desk was understaffed slow and rude. They we're not helpful in trying to get new flights booked and I felt like it was asking a huge favor even though it was Thier delayed flight that made me miss my connection."

Cons: "Why no food or snacks?"

Pros: "No food, an hour late"

Cons: "No free snacks"

Pros: "on time, friendly staff"

Cons: "never on time, late flying both way's"

Cons: "Headphone socket broken on this older airplane. Only purchased food available so n/a."

Pros: "Confortable"
Cons: "N/A"

Cons: "The time that I need to wait for my connections....I was traveling by myself with my two daughters 6 and 2 years old. And been honest wast pretty hard. Also, nobody told me about the permit that I need to have to go to Canada. I did the process online at the airport. Was fast but pretty stressful."

Pros: "The crew was friendly."
Cons: "The plane was old and looked like it was going to fall apart. My seat was torn and the back of the seat in front of me was broken. Not my favorite airline by far."

Pros: "No complaints about the flight attendants"
Cons: "Seating very tight and uncomfortable. Luggage handling is the worst I have ever seen. Out of 6 in our group, 2 had lost luggage and 2 had misplaced luggage. Airport customer service didn't care if items were lost or misplaced. Very unprofessional all the way around!"

Pros: "Everything was good."
Cons: "No issues"

Pros: "Entertainment"
Cons: "Crew was rude and poor communicators."

Pros: "good fast flight with great flight crew"
Cons: "food was mediocre"

Pros: "Prompt and courteous. The Embraer was not new, but in good shape. Entertainment was minimal - especially in comparison to the Dreamliner we flew from Europe to Toronto. The flight from Toronto to Denver was about 4 hours long, but the only included refreshments offered were sodas, water, or juice. Air Canada could do better on the food front. (Other food was available for purchase.)"

Pros: "Again, the entertainment options were the best part of the flight."
Cons: "It was a short flight, but it was still very cold. I didn't ask for any changes because of my previous experience, so I just wrapped up as well as I could and bore the chilliness. The crew was less than friendly."

Pros: "The crew was great"
Cons: "The gate changed 4 times and there was confusion at final boarding. The Toronto airport TSA agents have absolutely no manners and need to be retrained or fired. Traveling has become very stressful and try make it worse. There was a Hispanic girl, heavy set with curly hair yelling at us to approach the scanners. I talked to her asking her to be gentle with us because we'd just flown for 7 hours and are suffering from time zone changes. Another yelled at my seatmate about his travel size after shave. She was a black Caribbean. She snapped at me about the importance of security and that he was rude for saying he didn't care that she'd throw his stuff away. I told her that he said he didn't care because he's tired and quite frankly, a trail sized aftershave that she doesn't approve actually doesn't matter and is nothing for her to get worked up about. Her colleagues were all staring at her as she started throwing her weight around and making unprofessional nonverbal noises. Then there the room where you weight for your name on the screen to appear if your number is 1 or 2. The people in there are extremely gruff. There was only one Hispanic woman who took my slip of paper that had my pic who said please and thank you. Then when you go to customs to get your passport signed, the guy at counter 10 starts arguing with me for no reason. I put 1 family member on the customs form. He asked if anyone is traveling with me. I said no. He clarified that one should mean an additional person and not just me traveling. I said it wasn't clear and I didn't know. But he decided to get argumentative with me about it until I said ok and walked away. Your TSA process is a nightmare. I did not experience that at Heathrow, Vienna, Or Tel Aviv (all places that have recently experienced terrorism). I didn't even experience it in my arrival town Denver. Toronto TSA is very very poor."

Cons: "I didn't like that there were no screens to watch and I didn't know I needed the app on my phone to watch movies until I was already in e plane and too late download it."

Pros: "That I eventually got to Denver"
Cons: "Poor planning no backup aircraft I knew status via apps before staff did"

Pros: "Their was a two hour delay, the planes cabin was at about 55-60 degrees and due to bumpy ride...service was delayed (obviously not the fault of anyone). Just overall, uncomfortable experience!"

Pros: "On time, courteous, great movie selection for the very long flight. Food was decent."

Pros: "Nothing to like or not like. Classic small (Embraer) flight for 3 hours. Nothing special one way or the other."

Pros: "We boarded very quickly! The staff were extremely friendly and made our thirteen hour ride pleasurable. The inflight entertainment had a great deal of new shows and movies. The seats had a decent size and good enough leg room. The flight was smooth, and we took off at a good time. The food was fairly good as well!"

Pros: "GOOD LEG ROOM"
Cons: "THE FOOD STILL SUCKED."

Pros: "the flight was on time, without any delay, easy boarding"
Cons: "Food was very mediocre, also the variety of movies needs to be improved asap."

Pros: "The sits were comfortable. More space between sits."

Pros: "I enjoyed the pleasant crew and the constant water being given."
Cons: "The crew was very pleasant and helpful. However it was unexpected that no food would be provided on a 5 hour flight. If not a small meal then a snack was expected. The crew did provide water consistently which was very nice. My personal entertainment screen was very unresponsive and then the head phone jack wasn't working for sound, I had to hold it at a certain angle to hear bits of sound. Since the head phone jack was located at my thigh it was very uncomfortable and when I shifted I broke my headphones :("

Pros: "Captain gave us regular updates"
Cons: "LGA closed for wind. We sat on taxi road for 2 hours. Crew could have served more than water while we waited. No AirCanada's fault but crew should have a plan to serve the snacks/ food if we are sitting for two hours and the total flight time is 1.5 hours."

Pros: "They oversold the flight and were unable to provide the services that were paid for months in advance. They didn't care just go wait in a line and then another. Then overestimate Canadian dollars and with exchange rate that was much less and they said they do this everyday."
Cons: "I paid in advance at a Fair for services they never intended to provide then they over less because of the exchange rate but mention the stress created at the end of a vacation."

Cons: "No complimentary small snack at all, must pay for everything"

Cons: "This was the worse travel experience I have ever had. The crew was rude and gave wrong information that caused me to almost miss my flight. My ticket in the end ending costing me over $600 for all the additional charges. It was ridiculous. Among other things. I will never fly with them again."

Pros: "There is not one thing that was good about this flight. Bad plane, bad service, bad food. That sums it up. Will talk to as many travelers as I can to tell them to avoid this nightmare."
Cons: "No entertainment on board. No complimentary drinks. A piece of cold banana bread literally thrown on the tray for breakfast. Called the airline when reservation was made and told it would have entertainment and complimentary drinks. The switch to Rouge was a bait and switch. Rouge is from the 1970s. Long flights to sit and stare at the back of seat. Crowded seat at that. NEVER WILL FLY AIR CANADA AGAIN"

Cons: "I would like a flight map to follow the flight and have more information"

Pros: "simple and easy flight staff on flight were very friendly and helpful"
Cons: "selection of movies was small. and the controls are on the armrest in a bad spot."

Pros: "Crew was very helpful and polite, ensuring that the leg of our rerouted flight from Toronto to Frankfurt was comfortable."
Cons: "Not being able to complete my original itinerary as planned (see above)."

Pros: "There was nothing to like because I did not fly on Air Canada to Barcelona."
Cons: "For an unexplained reason, our first flight was delayed 45 plus minutes in Phoenix while cargo was moved from the forward cargo bay to the aft cargo bay. This caused us to miss our connection in Toronto. Air Canada then proceeded to rebook us on a flight leaving 2 days later. After an extended period of time, they finally rescheduled us for a flight to a different city in Europe and we had to catch another flight from there our final destination, Barcelona. The total additional travel time was extended by approximately 8 hours, causing us to lose the better part of our first day."

Cons: "My chair didn't lean back and the entertainment monitor did not work for about 2 hours."

Cons: "Lost my luggage no food only 1 juice' lost my luggage Robbed me (tsa toronto) of some gifts they thought dangerous"

Pros: "Comfy seat, good food, great attentive service and wonderful safe take offs and landings!"
Cons: "Flight delayed 2hrs without proper notification."

Pros: "flight was mostly empty so I can go sit somewhere else"
Cons: "I am only 6 feet tall, and my legs do not fit in those seats there is not physically enough room between the back of the seat and the back of the next seat for my legs to fit there"

Pros: "The flight attendant was personable and made the flight enjoyable."
Cons: "I couldn't get through security without my bag but they didn't have a way to let me know it was lost so I almost missed my flight waiting on a bag that wasn't coming. There should have been an announcement to come to the Air Canada desk. There wasn't. When I got to Charlotte, there was No One at the Air Canada desk to report my lost bag. Thank goodness those from United were able to provide me with a phone number to call. The phone attendant was not a native English speaker and made it incredibly difficult to file a claim. I'm still waiting for my bag."

Pros: "Extra leg room but paid for it."
Cons: "Very turbulent. Entertainment system was okay on iPad but selections were poor, lots of old stuff. Really dislike Rouge."

Pros: "I liked the Air Canada flight crew. They were all helpful and friendly. The flight was late leaving Toronto due to Florida weather issues and the crew did a good job keeping us informed and as comfortable as possible during the wait."
Cons: "Very little room in the seats. I am a man 5' 9" tall so I am average height. I barely had leg room and even less so when the person in front of me reclined his seat. Made the 3 hour trip feel a little uncomfortable. I miss the "back of the seat" entertainment system although the option through Air Canada's app worked fine,"

Cons: "Air Canada cancelled my boarding pass even though I made it to the gate before boarding started and refused to put me back on the flight. Then they lost my bags. The Toronto airport is a mess - avoid it if at all possible."

Pros: "Despite the original delay with the flight boarding staff was efficient at getting us on the plane as quickly as possible."
Cons: "The second part, from Toronto to Houston was the pitts. First of all they called me to the gate way before the boarding time and so I was a bit worried but when i got there there was nothing, they just confirmed I arrived from Montreal. This was strange and so I got a bit stressed as to why they had a called me and made me rush in the first place. Anyway, minor compared to the rest of the experience. The flight boarding was late, then an unscheduled stop in memphis for extra gas, then a tech problem that needed maintenance kept on on the ground. We finally made it to our destination 2 hours late. Most fellow passengers missed connecting flights and because we got out of the airport after midnight needed to get a cab to our accommodations. While I appreciate the attention to safety (and the curteous crew who obviously felt bad and were taking a lot of shit) we what was supposed to be a 3 hour flight ended up being 5 and there were no meals for sale,very limited snacks. We got one complimentary ,half can of juice and a bag of tiny bag spicy trail mix (labelled ranch) that i could not eat. After the delays we got an extra glass of complimentary cranberry juice. Which was amazing, but really did not cut it (from 5:15- midnight). By the end I was uncomfortable and starving! This was a radically disappointing experience in compared to the Ari Canada portion of the trip."

Cons: "Stewredess who did it did not apologise Had smelly shirt and wet jesns for 3 hours"

Cons: "Flight late, missed connection, lost luggage."

Pros: "Overall fair experience"
Cons: "Would have liked if the crew was a bit more friendlier. But they were professional for the most part."

Cons: "Crowded planes."

Pros: "Quick flight - happy crew - United rocks!"
Cons: "Toronto Airport needs to get their act together. This is twice now that there were two Star Alliance flights to Denver at roughly the same time - United and Air Canada - miles apart in the terminal. Yet only the Air Canada one was on the flight board. I. Er half the flight walked to F64 and then had to run to F97. Shoddy."

Cons: "Very turbulent flight"

Pros: "Toronto is a good place to Fly out. Much cheaper rates than small USA city like Rochester. Booked 1st class Tickets for about the same price coach. They have Customs to USA very well thought out."
Cons: "Very minor delay boarding, made up time in the air. Gate crew reassured that all connecting flights will be fine."

Pros: "The layover in Denver worked out perfectly - no long wait. The first leg they announced Gate check early so there were no delays on boarding. On-time flight."
Cons: "The leg room. Small size of complimentary snacks. No United entertainment."

Pros: "Seats tip back pretty far, without cramping up leg room for the person behind you too much."
Cons: "The passenger behind me was playing games on the screen on the back of my seat. So, my seat was constantly being tapped and it was more difficult to sleep."

Pros: "Nothing"
Cons: "Nothing"

Pros: "a little bit more foot-room than my previous flight on a different airline."

Pros: "Nothing"
Cons: "Everything"

Pros: "Nothing"
Cons: "Our flight was delayed 1.5 hrs due to lack of communication, leading me to miss my connecting flight by minutes"

Pros: "leaving on time"
Cons: "Crew's facial expression were upsetting to see since they looked unhappy. Should I be worried about my flight?"

Cons: "Flight delayed due to weather. Rebooking was a zoo, had to pay for hotel room and worst of all waited over an hour at baggage claim to get our bags back. It's taking us 2 days to get from Albuquerque to Austin."

Cons: "Plane from Toronto to Denver could have been a bit bigger / nicer for that long a trip."

Pros: "Security was quick and efficient. Boarding was extremely organized. The airline attendants were attentive. The pilot on United informed us when the possibility of hitting turbulence occurred so we could adjust accordingly. Overall, great travel experience."

Pros: "Boarding and landing ahead of schedule"

Pros: "Generally it was ok. Travelling is so horrible these days that "ok" seems pretty great."
Cons: "My bag was lost but my husband's, checked at the same time, made it."

Pros: "Nothing"
Cons: "Refused to delay connecting flight in Denver even though severL of where already on ground in delayed flight coming into Denver. Albuquerque flght was still at gate when I got there, having run through airport along with several others. We were refused admission to plane despite delay being United's fault. Unacceptable! I will avoid flying United in the future whenever possible"

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: "Got there on time."
Cons: "Private screening does not work well. Very little kneeroom. No room in seat back pockets to put anything."

Pros: "On-time departure from Cancun but early arrival in Denver (relatively mild jet stream?). Otherwise, fairly typical United cattle carrier."

Cons: "Delayed and got downgraded without refund of difference"

Pros: "Sucks"

Pros: "Good crew"
Cons: "The usual. - crowded, smelly"

Cons: "3+ hour delay"

Pros: "The seats had plenty of leg room and I enjoyed the movie selection"
Cons: "The food left much to be desired"

Pros: "Crew was great"
Cons: "Great aircraft!"

Pros: "Flight was on time; both ground and flight crews were pleasant and efficient."
Cons: "They were out of ginger ale, my beverage of choice :-)"

Cons: "Terrible experience ever!!!!! Didn't get economy plus that I paid for, seats didn't recline and luggage got damaged and was not replaces or compensated for."

Pros: "Nothing because they didn't allow us to board the flight because there was 20mins left til the plane departed. Also the tickets were bought with 24hrs and they didn't refund or give us a flight credit."
Cons: "They didn't allow us tothe tickets were bought with 24hrs and they didn't refund or give us a flight credit."

Pros: "Sitting in the flight on the Tarmac for over 2 hours is a terrible experience"

Pros: "Flying in America gave me no problems. Things only got terrible after we left Denver."

Pros: "The service was food"
Cons: "Lack of leg room!!! After my bicycle box was inspected they failed to secure my bike the way I had it in the box. Bike was flipping around in box. Bent rear brake calipers. Bent brake hoods. Rear skewers were uncoupled. No way to treat a $10,000 bike! Very upset!"

Pros: "Had a stroller, two bags, and a car seat and the check in staff helped us tag everything and loaded it for us. It was nice to see the Billings staff go above and beyond in my families time of need."

Pros: "They sent me a text message telling me it was canceled"
Cons: "Unfortunately, despite the text message saying the flight was canceled, the ANA ground staff in Taipei that we talked to assured us it was not canceled. But it was. And so ensued 24 uncomfortable hours of pain. Thanks, United."

Cons: "A la ahora de irnos hubo muchos contratiempo por el tiempo pero por el vuelo después que nos fuimos fue excelente"

Cons: "Bad snacks. Need biscotti"

Pros: "It was a quiet and smooth ride."

Cons: "Unreliable wifi."

Pros: "The flight was snooze and the flight staff were friendly!"
Cons: "N/A"

Pros: "Crew was nice and friendly."

Pros: "A very typical flight."
Cons: "No complaints."

Pros: "The flight attendant finally took care of it after I complained a couple of times."
Cons: "That you changed our seats, and, that there was no room in any of the overhead bins. So, the flight attendant told me that I needed to fight my way through the people coming toward me back up the aisle and check every overhead bin all the way back up to see if there was room for my one suitcase. Others had brought more than one bag up there. Finally they checked my one carry on bag. The ride was also really bumpy, worst that we've ever experienced. But that was due to weather conditions."

Pros: "The flight was short"
Cons: "We had to walk almost halfway to Newark just to get to the flight. It was outside on the Tarmac at the very very very end of the terminal, I've never seen anything like it before. We also left a travel folder in the seat back pocket containing important documents and a sealed envelope of 1000$ USD. We immediately called to retrieve it and at first were told to file a complaint online, no matter how many times we tried to tell them that time was of the essence in this situation. We also begged the united airlines personnel to speak with a manager and he wouldn't put one on the phone. In the end all they could tell us is that the folder "wasn't there""

Pros: "Getting off the plane"
Cons: "Bathrooms weren't working, huge lines in aisle, lackluster service. Overhead bins were full by Group 3. late takeoff."

Pros: "I wish all airlines were like Lufthansa. Lufthansa still cares about the passengers, while others only care about profit."

Cons: "One strange thing happened on my United airlines flight. The crew announced before we boarded that there wasn't enough overhead space for rolling bags and encouraged us to check them in. Upon boarding they announced that all overhead space in the back was full. I sat in the back and noticed that the crew closed the overhead compartments even though they were mostly empty. Another passenger opened an empty one and the crew came over and closed it right away, though many people were still boarding. What's going on?"

Pros: "United seems to be recycling which is a good thing."
Cons: "The obnoxious child sitting behind me. He kicked the seat and pulled on the tray."

Pros: "San Antonio flight to Denver delayed too long where could not make connection in Denver to Toronto. Had to make other flight arrangements."

Pros: "Under booked flight was a plus!"

Pros: "Arrived early and flight crew was super nice!"

Read more about Delta
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

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