Daily cleaning, installation of cabin HEPA filters on flights from Houston to Denver
Southwest has waived its change and cancellation fees on flights from Houston to Denver. Confirm policy on booking site.
An average nonstop flight takes 4h 12m, covering a distance of 883 miles.
There are 47 (nonstop) flights between Houston and Denver per week, averaging 6 per day.
In the past 3 days, the cheapest one-way tickets were found on Delta ($88) and American Airlines ($98), and the lowest round-trip tickets have been found on Delta ($175) and American Airlines ($189).
Southwest (6 times daily) is the most frequent flyer on this route.
From Houston to Denver, Tuesday is the cheapest day to fly on average and Friday is the most expensive. Flying from Denver back to Houston , the best deals are generally found on Friday, with Thursday being the most expensive.
When flying out of Houston you will be using Houston Hobby, often referred to as Houston Airport. You will be landing at Denver Intl, also known as Denver Airport.
KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Houston to Denver.
KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Denver from Houston is likely to change within 7 days, so travelers know whether to wait or book now.
Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Denver with an airline and back to Houston with another airline.
Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Denver from Houston up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.
Scores according to KAYAK customer reviews
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: "Wouldn’t change a thing! I don’t always fly! But when I do!! I fly delta!!"
Pros: "Christina brown was amazing at gate"
Pros: "The staff at Delta are always friendly and helpful and they were able to squeeze me onto a very full flight."
Cons: "The main economy seats were far too narrow."
Pros: "The crew was great and the free entertainment was great"
Cons: "Bring back pillows and blankets especially on red eyes out of Anchorage"
Pros: "Love the fact that the head rests move to support your head better."
Cons: "No meal option and my video screen volume did not work"
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"
Pros: "great crew!"
Cons: "luggage. what a nightmare. I waited 30min for my luggage (after a delayed flight) only to be told by a fellow PASSENGER that some of our luggage was directed to a FRONTIER CAROUSEL. I then had to wait by that carousel till I found it. so much for "bags in 20min guaranteed""
Cons: "Better screens for in-flight movies. More legroom or upgrade options."
Cons: "Boarding at JFK.Always messy"
Pros: "Boarding was quick"
Cons: "No entertainment, plane was small"
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: "Inflight experience was fine. TVs didn’t work but Flight attendants are friendly on Delta, cramped seating - but not unlike other airlines."
Cons: "Regular fare seat assignment not available prior to gate . Airport concourse F - poor - limited services. Customer Service seemed uninterested and unable to provide service both on phone and at gate. I’m a frequent United flyer & today’s Delta service experience made me more loyal to UA."
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."
Pros: "Free drinks and snacks - great entertainment system (please read this Frontier)!"
Cons: "Boarding process was agonizingly slow and ineffective"
Pros: "Everyone who has a kid knows how challenging certain things can be in a flight and for me the combination of a night flight interrupting my baby’sschedule + a full flight it equalized disaster. My daughter could not get comfortable for the love of life and I just felt horrible and frustrated and what sucked most was the 9 year old and her obese father siting in our row that kept giving us weird looks."
Cons: "There’s NO room in planes between seats. It’s 2018 and new planes must be done ASAP to accommodate people better. I’m 5’1” and 110 lbs but adding my 25lb daughter siting in my lap before she turns 2 is absurd to expect that it will be comfortable whatsoever for us or the people breathing next to us. Please DELTA, lead by example and make sure your planes are designed with more room in between and around the seats. In my opinion, every seat should be first class."
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: "In a pinch they were able t"
Pros: "Everything was perfect !! Staff friendly"
Pros: "Great in every way"
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: "Check in lines were crazy long"
Pros: "First leg from San Diego was excellent."
Cons: "Arriving in SLC discovered out flight to Denver was CANCELLED! Had to reschedule to the next day. Not fun!"
Pros: "The entertainment unit allowed me to watch the Denver Broncos game live which helped lessen the delayed departure and uncomfortable seating."
Cons: "Uncomfortable seating....too crowded!! We had a delayed departure by 30-40 minutes because of a computer download issue. Too many folks carrying carry-ons delayed boarding. I wish folks were not encouraged to go that route but to check baggage. This time of year gets even tougher with folks carrying Christmas presents and over sized personal items. Ugh. Not fun to travel this time of year."
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."
Pros: "really helpful and friendly service and nice seats."
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: "Fast and very friendly staff."
Cons: "I don't like that I already completed this survey several days ago and have been receiving reminders to do so. I guess you don't have a good system in place for knowing who has and has not completed your surveys. That's too bad."
Pros: "Friendliness of staff. Second flight was a newer plane - sweet!"
Cons: "For a long flight perhaps a little more in the snack department."
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."
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: "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: "everything on schedule; courteous staff and great pilots"
Cons: "everything was very ordinary so cannot complain"
Cons: "long wait and delayed flight"
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: "Very professional and caring."
Pros: "Crew was great."
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: "Great crew"
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: "Everything was great"
Pros: "Appreciated the pilot keeping us informed re: turbulence and avoiding it"
Pros: "I loved everything! Best flight experience in a long time. Really easy, on time, great window seat, thank you"
Cons: "Me probably. You guys were excellent!"
Cons: "Not allowed unleashed dogs to take my seat or be in my flight"
Cons: "Sat waiting for gate for 30 min"
Pros: "Horrible staff at LAX boarding gate. Been treated horribly by incompetent and rude AA staff."
Cons: "Hire only friendly people for this type of job. Hire people knows basic math. Train their well on how to communicate with people."
Cons: "The plane had a mechanical issue that they needed to address (due to the fact that they prior crew did not address it) and we sat in the gate for 2 hours waiting. No worries water was offered by crew and the flight had no food."
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 notifications regarding my connection and baggage claim."
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: "The flight itself was fine."
Cons: "The gate change was not announced on my phone app (changed from E7 to D49). I hate leaving out of Terminal E at MIA. There is no point to having TSA Pre-Check if you have to stand in line with people who don't have it. I have to remove my liquids and laptop. It's such a shabby, run-down terminal."
Pros: "Crew was nice"
Cons: "Not enough leg room. They did a gate change and I almost missed the flight because nothing was announced and when I looked at my phone app it had the previous gate."
Pros: "Overhead bins were newly done with plenty of space since carryon can be placed vertical on side. Decide holder built into the seat was very nice."
Pros: "Nice staff"
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: "Not using kayak."
Cons: "Worst flights in history. It took three days to get from Italy to the US. Do not use kayak!"
Pros: "Our plane was given to another group going to Orlando so we were delayed almost 4 hours. This after a 5 hour layover."
Cons: "Gate lady was funny about being pissed about the delay."
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."
Pros: "They got us there quickly."
Pros: "Ahead of schedule"
Pros: "I had a connection flight to JFK I came before the time about 15 min and crew saw me but she told me, sorry someone took your seats I lost around 4000$. This happened at Dallas airport."
Pros: "Seats were too tight and too close together."
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."
Pros: "Nothing in particular"
Cons: "Outlet did not work"
Cons: "Everything. Had to sleep overnight in airport and was late coming home."
Pros: "Wonderful, again. Will fly American any chance I get!"
Cons: "No tvs!!"
Cons: "the new seats are awful"
Pros: "Tv and power outlets"
Cons: "This one attendant didn't get her name but was very cold to me"
Cons: "Long delay"
Cons: "Small plane"
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: "More improved than the last trip I took with AA to Denver. Efficient boarding."
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: "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.."
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: "Very friendly staff"
Pros: "Crew was very helpful Everything was on time"
Cons: "Very bumpy ride (not anyone's fault) Very uncomfortable seats"
Pros: "Great crew."
Pros: "The plane was super clean, no fear of COVID-19."
Pros: "I liked the price and that it was a direct flight"
Cons: "Everyone was moved around a lot to try to social distance so I was closer to more people than I would have been on a regular flight."
Pros: "The crew was very nice, the flight was smooth and my husband and I got a full row to ourselves."
Cons: "Seats are not that comfortable, no entertainment."
Cons: "The ticket lady was rude just nasty and upset for no reason."
Cons: "Seats are uncomfortable"
Cons: "It wasn’t explained to me that Zone 2 allowed no storage of bags overhead. What was that $50 fee for? Hidden fees confusing."
Pros: "Nice crew. Friendly and responsive"
Cons: "Recliner chairs"
Pros: "Great crew"
Pros: "There was nothing outstanding really"
Cons: "It’s a low cost airline, so expectations are very low. Plane was very dirty because it just keeps on hopping back and forth without any cleaning service it seems"
Pros: "Nothing. It is a cheap airline and it shows. It is the worst airline I have ever flown."
Cons: "The crew was okay but it must be depressing to work for a company where you cannot get a glass of water without paying for it. I had never flown allegiant and was not prepared for paying $50 for my carry on bag."
Pros: "We finally got to our destination"
Cons: "Uhh not boarding and then the pilot coming on and saying "whoops we have to deplane since the weather is bad." Really? Why not just delay boarding instead of putting everyone through that. Terrible experience"
Cons: "Very dissatisfied with boarding and told we had to pay for our luggage but noone else did .I had prepaid for 1 incase I brought big luggage but I brought carry ones. So I was charged 100..but everyone else's was larger"
Pros: "Definitely the price. Fairly quick boarding process, just a little congested. Decent priced drinks."
Cons: "Not the most comfortable seats, but there was no one next to me, so it was okay."
Cons: "Be on time, 3 hour delay."
Cons: "Being stranded for 6 hours in the airport for no weather reason, with no compensation."
Pros: "They gave us a soda in the waiting area, because we were so delayed. Flight attendants were friendly."
Cons: "Flight was delayed about 2.5 hours, with no explanation or information given. Loading was extremely slow, hot, and uncomfortable."
Cons: "So many charges at every step. $5 for boarding passes?"
Cons: "Our Kayak reservation did not state that we would be a boarding level that did not allow for a carry-on item. This needs to be more clearly identified."
Pros: "Better than on time Smooth sailing through south bend airport!"
Cons: "Just have to remember thrift airline No seat going back"
Pros: "Keep the free snacks and drinks, NA or soda, I really just miss the legroom (nearly 6’ tall) and cushions, a chair that can ease back a bit. All airlines do this but you are worse than frontier, the major carriers have skimped but not like this."
Cons: "3 hour torture chamber. When she said it was their goal to make us comfortable, but more importantly to keep us safe I snorted laughter. It was a bit better and a lot shorter than the dark passage"
Pros: "I fly this airline airline quite a bit because I have family in the mountains of North Carolina. I have never had a problem with them, I fly out of Fort Lauderdale to Asheville, it's a quick one and a half hour flight. The flight crew is always professional and courteous."
Pros: "Flight crew was friendly and smooth flight."
Cons: "Plane was noticeably old and dirty"
Cons: "Our flight was delayed 4-5 times before it was cancelled all together and rescheduled for the following day. I lost over $200 in hotel charges and valuable time with family. A 3 day trip was decreased to a 2 day trip. Extremely disappointed. After sharing our experience with others we heard the same thing happened them."
Pros: "The crew, from start to finish were great. From gate to gate The plane was nice and clean. The phone app was pretty well done also."
Cons: "I know you have to make a buck but damn. Peddling food, drink all the charges and the credit card offer during the flight."
Pros: "Direct flight to my Destination"
Cons: "Rental car I paid for on Allegiant website didn't include $50 in airport and sales taxes making it look like the Allegiant rentals were about the same as renting directly from rental car companies. Problem is that Allegiant didn't include taxes in the quote or amount I paid online. Surprise when I got to my destination and was told it would be $50 more. Alamo agent said I wasn't the first person to have that problem. Then on return my bag was damaged and was told I could place a claim at the ticket counter. It would have been helpful to have an agent there or a way to contact an agent. No such luck. After bag charges, poor service and hidden fees Allegiant isn't really a great deal."
Pros: "Free bags for military. Friendly, efficient, on time, price. It was all good."
Cons: "Nothing. Excellent flight."
Pros: "I never have any issues. Everything is always great."
Cons: "Worst plane trip. I am a bigger girl, and I could not even buckle my seat belt due to the size of the chair. I have never had this issue on any other plane flight. It was incredibly noisy, and rough ride. I will not travel again."
Pros: "Great service and very clean plane. Staff did everything to accommodate everyone's needs."
Cons: "There was a lot more turnulance than expected which could have made for our shaky landing but the pilot did a great job regardless."
Pros: "No complications and efficient boarding"
Cons: "The people that stand up when the plane stops even though they are going to have to wait till the door opens and everyone in front of them has to get off before they do."
Pros: "Well-priced. Good seat spacing and aisle size, good atmosphere. Easy to find overhead storage and boarding is quite fast and well organised."
Cons: "No complementary drinks, no TV to watch. Which is fine since those aren't necessary, but it's good to know if that's something you're willing to pay extra for."
Pros: "Very comfortable; flight crew very professional."
Cons: "Getting off late - but this was due to a storm, so I am happy that the decision was made not to take off on time."
Pros: "Everything they could control went very well."
Cons: "The flight had a lot of turbulence, but that's not their fault. I thought the pullout handled the situation well."
Pros: "Everything was great during the flight but..."
Cons: "We were delayed over 7 hours, with only a $50 dollar future airline credit and an $8 meal voucher. That's not nearly enough for that kind of headache. It was 2 am before we arrived at our hotel."
Pros: "Direct flight, low price"
Cons: "Paying for a seat. Uncomfortable seats"
Pros: "Crew was great and handled the delay well. Definitely worth the 6 bucks each way to get the seats with additional leg room."
Cons: "This the 2nd time I've flown from Punta Gorda to Indy in the last month and both times the departures were delayed because of mechanical issues. No vouchers offered + no free anything offered = Bad customer service model. This airline also charges for carry-ons."
Pros: "The price and the nonstop flight."
Cons: "6+ hour delays Plane looked to be in sad shape, paint peeling, looked bolted together from spare parts. Strange Air Conditioning issues mid-flight that turned the plane into a walk-in freezer. upon landing our entire flights bags were abandoned and there wasn't a single Allegiant representative in the airport to communicate with the airport baggage people. After 1.5 hour wait our bags were finally offloaded onto the baggage claim by an airport employee not normally tasked with the job. Allegiant was paged over and over with no response. I will NEVER fly Allegiant again."
Pros: "Very clean, great staff, smooth flight, easy boarding. All the things you could expect for a great experience. First time flying with this airline so I didn't know what to expect but it was great!"
Pros: "On time. Courteous stsgg. Great price."
Cons: "All was great"
Pros: "Crew polite, clean plane"
Cons: "Late, delayed. Price deceptive, extra charge to reserve seat and carry-on bag."
Pros: "The flight crew was nice."
Cons: "The staff at Ft Lauderdale airport was not customer focused. They were disorganized and rude. My friend paid $5 for his ticket to be printed and, at the very least, they should refund that. I'll never fly Allegiant again."
Pros: "Finally got home!"
Cons: "Flight was Delayed taking off by 2 1/2 hours due to mechanical issues. This flight along with the four hour delay when I flew to Orlando is a disaster. Probably the last time Allegiant will be flown!"
Pros: "Excellent flight! Down side no wi fi connection and no Internet, you must buy all food and drink but hey for cost of the trip worth it!"
Cons: "No internet or wifi"
Pros: "initial price seemed great..."
Cons: "price seemed great until you add up all additional charges for carry on bags, seat selection take off was over 35 min late passengers seemed to be an inconvenience to attendants. air on & of valve f at seats was jammed & didn't turn off attendants said "oh well sorry""
Pros: "When you add all the separate costs to the initial ticket price your better off flying a "more expensive " airline. Additional costs are for seat selection, unless you want to take a chance of getting stuck in a middle seat, carry on and checked bags and paying for bottled water and soda. Also the seats don't recline so carry ibuprofen if you fly on Alegient."
Cons: "Flight was canceled but they keep telling us that in an hour and that hour never came. We are stuck at the airport. We should get upgraded to 1st class"
Pros: "I had a great experience with Allegiant. The airline had a great rate, professional staff, and great service. I'd recommend Allegiant to all my friends."
Cons: "Flight departure delayed two hours"
Airlines flying from Houston to Denver have enacted additional safety measures and adjusted policies to better accommodate travelers. Policies vary by airline.
Daily cleaning, installation of cabin HEPA filters on flights from Houston to Denver
Masks required on board, masks provided on flights from Houston to Denver
Social distancing seating
Middle seats unavailable to book on flights from Houston to Denver
Testing for antibodies, testing for symptoms for flights from Houston to Denver
Waiving of change fees. Search flexible flights from Houston to Denver