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.
The United States has restricted the entry of all foreign nationals who have passed through or have been in China, Iran, Most European Countries (Austria, Belgium, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Italy, Latvia, Liechtenstein, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland, Monaco, San Marino, Vatican City), the UK, Ireland, Brazil and South Africa in the past 14 days.
With the exception of certain travelers which includes certain family members of US citizens or permanent residents including; spouses, children (under the age of 21), parents (provided that his/her US citizen or permanent resident child is unmarried and under the age of 21), and siblings (provided that both the sibling and the US citizen or permanent resident are unmarried and under the age of 21);
There is also an exception for travelers with the following visas: A-1, A-2, C-1, C-1/D, C-2, C-3, CR-1, CR-2, D, E-1 (as an employee of TECRO or TECO or the employee's immediate family members), G-1, G-2, G-3, G-4, IR-1, IR-4, IH-4, NATO-1 through NATO-4, or NATO-6 visa;
Members of the US Armed Forces, spouses, and children of members of the US Armed Forces;
Travelers with invitation of the USA government for a purpose related to the containment/mitigation of the Coronavirus (COVID-19);
Travelers with documents issued by the US Department of Homeland Security, US Customs and Border Protection, or US Department of State indicating that the traveler is exempt from the restriction;
B1 crew crewmembers that are engaged in lightering, Outer Continental Shelf (OCS) activity, wind farm activity, private air/sea crew and other similar crewmember activities;
Students with an F-1 or M-1 visa and their F-2 and M-2 dependents, if they arrive from or have been in Ireland, the UK or Schengen Area in the past 14 days.
All travelers, 2 years of age or older (including US citizens and transit passenger) must present a negative COVID-19 viral or antigen test result issued 72 hours prior to departure or have a proof of recovery from the virus within the last 90 days prior to boarding the plane.
Travelers must complete a disclosure and attestation form before departure.
Exemptions or waiver to the testing requirements may be granted by the CDC on an extremely limited basis when emergency travel (like an emergency medical evacuation) must occur to preserve someone’s life, health against a serious danger, or physical safety and testing cannot be completed before travel.
US citizens and permanent residents arriving from the UK must present a medical certificate with a negative COVID-19 PCR or antigen test result issued within 72 hours prior to departure.
Travelers arriving in New York State must complete the Traveler Health Form.
Travelers arriving in Massachusetts must complete the Massachusetts Health Form.
Travelers are advised to get tested 3-5 days after travel and stay home and self-quarantine for 7 days after travel. Even if they test negative, they must still stay home and self-quarantine for the full 7 days. If the test is positive, isolate to protect others from getting infected.??
Travelers who did not get tested, are advised to stay home and self-quarantine for 10 days after travel.?
All other info
Travelers are subject to COVID-19 measures set by the state/territory of their final destination. For more information go to CDC website.
There are currently 1,105 active cases of COVID-19 diagnosed in US and 0 deaths as of Mar 2 2021
Please see our Coronavirus (COVID-19) Travel Restrictions page for more information on restrictions worldwide.
An average nonstop flight takes 4h 16m, covering a distance of 883 miles.
There are 73 (nonstop) flights between Houston and Denver per week, averaging 10 per day.
In the past 3 days, the cheapest one-way tickets were found on American Airlines ($66) and Delta ($79), and the lowest round-trip tickets have been found on American Airlines ($125) and Multiple Airlines ($144).
Southwest (10 times daily) is the most frequent flyer on this route.
From Houston to Denver, Tuesday is the cheapest day to fly on average and Sunday is the most expensive. Flying from Denver back to Houston , the best deals are generally found on Wednesday, with Monday 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"
Cons: "It was a Great flight. I always enjoy flying Delta"
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: "Flight was delayed and completely packed so our family could not get seats together"
Pros: "Love the fact that the head rests move to support your head better."
Pros: "The seat was great, I wish all seats on the plane were that comfortable"
Cons: "Nothing, everyone was great"
Cons: "No meal option and my video screen volume did not work"
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: "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."
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."
Cons: "Very little leg room."
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: "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: "I usually have had great experiences with Delta. The meal selection was limited. By the time they made it up to my seat they had run out of what we wanted. Also, the entertainment system at my seat and my husbands wasn’t working well. One of the bathrooms had a cabinets Tvst oliiiooooiiooooioiooiiiooiio"
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"
Cons: "Check in lines were crazy long"
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: "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: "free texting and entertainment!"
Cons: "our flight was delayed half an hour."
Pros: "The boarding process in Atlanta was as smooth as could be expected given that it was a full flight. I appreciated the gate announcer's suggestions to everyone about how to ease the overhead baggage crunch."
Cons: "Economy is very tight quarters."
Pros: "The plane, crew was clean, newer and had TV's in the backrests. Remember to bring headphones! Seats are tight, but the crew was friendly and may the flight experience positive."
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: "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"
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: "everything on schedule; courteous staff and great pilots"
Cons: "everything was very ordinary so cannot complain"
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: "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: "plane had individual movies for free with each seat!"
Cons: "IFE was not streaming movies, WiFi on but not loading"
Cons: "Spacing people out until this covid is over"
Cons: "There are too many announcements on the screen before you can start watching entertainment. It takes about 15 minutes."
Cons: "Not a thing. Good airline, all the way around"
Pros: "Really enjoy flying first class."
Pros: "Everything was great"
Pros: "Appreciated the pilot keeping us informed re: turbulence and avoiding it"
Pros: "It was standard AA service"
Cons: "After flying in Delta Comfort+, American’s forward economy section is just nothing."
Cons: "Sat waiting for gate for 30 min"
Cons: "Only pretzels, came eat refined flour, nuts or something else would be great."
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."
Pros: "The notifications regarding my connection and baggage claim."
Pros: "No major screw-ups this time!"
Cons: "It's AA, let's not try too hard here."
Cons: "American Airlies no longer partners with T-Mobile for free WiFi. :-("
Pros: "Nice staff"
Cons: "Ran out of food that I like"
Cons: "I hate Americans boarding process"
Pros: "Friendly crew"
Cons: "Tight seating leg room non existent."
Pros: "Landing and deplaning"
Cons: "Literally everything else"
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: "Great service in first class"
Pros: "David took really could care of our cabin. Likes his cheerful attitude. He was excellent. Hope you let him know."
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: "Nothing in particular"
Cons: "Outlet did not work"
Pros: "The airline staff was SO kind and helpful. I'm an AA fan now!"
Pros: "Easy and quick boarding. Excellwnt service in first class. Comfortable ride."
Cons: "Nothing. Excellent travel experience."
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."
Cons: "Everything. Had to sleep overnight in airport and was late coming home."
Pros: "Staff was great!"
Cons: "Seats were really uncomfortable up and reclined. Overhead baggage was full by the time I boarded and there was no enforcement of the carry-on baggage sizes... This needs to be addressed and contributed to our lack of comfort, noting this was the last leg of an 18 hour journey. My body still hurts today after a good nights sleep."
Pros: "Wonderful, again. Will fly American any chance I get!"
Cons: "They had a delay that bumped our international connection. We had to switch airports and airlines and arrived significantly later than originally planned, causing us to miss pre-wedding events."
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"
Pros: "More improved than the last trip I took with AA to Denver. Efficient boarding."
Cons: "Uncomfortable seats Crying child"
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."
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)"
Cons: "When your on your honeymoon it sure would be nice to have a seat next to my husband like we requested."
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"
Cons: "Great crew and smooth ride"
Pros: "Crew was very helpful Everything was on time"
Cons: "Very bumpy ride (not anyone's fault) Very uncomfortable seats"
Pros: "The plane was super clean, no fear of COVID-19."
Pros: "The gate crew was absolutely wonderful. They made the delay bearable. The were very entertaining and friendly."
Cons: "The delay. Couldn’t be helped, but still annoying."
Pros: "the non-stop flight works very well. lay overs are never welcomed, but tolerated because they need to be"
Cons: "hard to think of anything"
Cons: "Two hour delay"
Cons: "I had problems with baggage and Allegiant staff at the airport were very unhelpful."
Pros: "Not bad for the price, convenience beats all"
Cons: "First class"
Pros: "Love Allegiant!"
Cons: "20 minute delay"
Pros: "Flight attendants were very kind, attentive and caring. There was a special needs girl in the same row as me that was by herself and they were always making sure she was okay and comfortable as well as the rest of the plane."
Pros: "Comfortable and inexpensive tickets"
Cons: "It was all good!"
Pros: "Cost of reservation"
Cons: "Expensive extras (added up to more than a flight on another airline would have been)- carry-ons, in-flight snacks and drinks, etc."
Pros: "The crew was very nice and professional. Seats were as comfortable as they can be"
Cons: "I really didn't have any problems , very pleased with the airline"
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. Boarding process was pretty quick. Flight attendants seemed nice."
Cons: "Left a little late, but still arrived on time, so that was okay. Seats aren't the most comfortable, but that's expected. Was still able to get a little nap in."
Pros: "All wa great"
Pros: "LEFT EARLY ARRIVED EARLY PERFECT"
Pros: "Our plane was struck by lightning and therefore not able to fly, so we were deboarded and left to wait until a rescue flight could come in from Boston. Over the course of 4 hours, the crew kept us updated with every little change and were all very helpful! Once we were able to board the rescue plane, the crew handed out complimentary candy and drinks to help ease the wait times. Highly recommended!"
Pros: "All went well. No real disappointments!"
Cons: "A little cramped but not terrible. Would like to know kayak fee up front before booking and all hidden charges!"
Pros: "Early out and early in."
Cons: "Being stranded for 6 hours in the airport for no weather reason, with no compensation."
Pros: "It was great"
Cons: "The flight was delayed 30 minutes"
Cons: "my Luggage did not make it to Reno."
Cons: "Bags charge for 105$"
Pros: "Crew was very friendly, very polite unlike the United flights I have taken. I was told the space would be uncomfortable but it was absolutely fine for the short flight."
Cons: "No beverage service. Not even water is offered."
Cons: "The $17.00 i paid to insure the flight was not honored. I had some health issues and needed to cancel. I was then told that the airline I chose through your site, won’t honor it. I am furious and am owed my refund."
Cons: "Late departure without any explanation. TSA really under staffed."
Pros: "Quick and easy boarding, on schedule and the cleanliness of the cabin."
Cons: "Extra charge to make use of the overhead bins. This does not include extra work or cost for Allegiant. Lack of legroom; take out two rows of seating and make the current size of travellers comfortable."
Pros: "Like the newer plane. The crew was nice."
Cons: "I purchased 2 bulk head seats for more leg room and because they changed the plane, my seats were no longer in the bulk head. We didn't have extra leg room and I would like a refund for the price I paid to upgrade my seats. It is impossible to get service on the phone, since even the customer service number the flight attentendant gave me, still put me on an unbearable hold time. Please refund my money for the seats that you did not provide me with."
Pros: "Friendly staff!!"
Cons: "Hour delay on flight"
Pros: "Cheap fare, nice crew, clean plane"
Cons: "Small seating, small snacks , extra charges for anything"
Pros: "Pretty empty flight so we were able to change seats. Good thing because my family wasn’t sitting together-$12 to pick or change seats ahead of time. Just be prepared and knowledgeable about this airline and other budget airlines and you will be satisfied. - pay for bags in advance, Try to weigh your checked bags before the airport, Bring snacks or drink on flight - otherwise you have to pay for it. Trenton and punta gorda airports are small, you have to walk to the plane. I love the small airports, no lines , easy parking!"
Cons: "Seats aren’t that comfortable and don’t recline even a bit, tray table is small."
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: "Everything the service for breakfast , the interpretation for more information about when you’re in a plane what to do in case something happened and stuff"
Cons: "They didn’t have a WiFi on for the plan I couldn’t use my phone at all"
Pros: "It was easy to book. And they helped me make changes to my flight schedule without charging me"
Cons: "Everything else is charged... from the in service beverage cart, to your boarding pass. Your baggage. Everything you have to pay for. So just be prepared for that."
Pros: "Great direct flight to many destinations smaller airports less wait time"
Cons: "seats are crowded"
Cons: "I attempted to check in online and was unable to do so. Bad app."
Pros: "Flight was on time, the cabin attendants were courteous, and the flight captain kept us informed."
Cons: "Sent email out asking for volunteers to reschedule her flight. Got on the plane our seats were not the same as selected. And we paid more to select our seats. Friend of ours seat was switched also and instead of him sitting next to his wife he sat next to a person who did not have an assigned seat he was extremely large and he was hanging off The seat into the aisle I noticed an empty seat and had to ask the stewardess if he could switch seats instead of the stewardess offering on her own. The flight out was delayed approximately one hour various mechanics coming on and off plane until finally we were able to leave."
Pros: "This flight was a return to airline travel in the 1980s in a good way! The plane was clean. The seats are among the most generous seats today. The best and brightest surprise was that each flight attendant was genuinely polite and welcoming."
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: "The crew was plesant and helpful."
Cons: "The flight was delayed 35 mins. Then we couldnt get luggage when we arrived because of lighting. We were told to go one place and our luggage was taken somewhere else."
Pros: "Nothing. We were scheduled to fly back to Vegas at 7:07 then delayed to 8:30 then 10 pm then 11:25 pm now 1:15 am. This is unbelievable, unacceptable and ridiculous! And I have to work the next day. This is unacceptable! I just received another update that now we're leaving at 1:45 am . Please do not, again do not use Allegheny EVER again!!"
Cons: "So many delays. This airline is unreliable, unprofessional! Ridiculous! Please read my comments above. Do not use Allegiant!"
Cons: "Bad service. Long waits. No directions at airport from the airline and counter service slow"
Cons: "Two planes of passengers in gate area delayed takeoff without warning or information."
Pros: "Flight crew was very kind"
Cons: "The security crew made me go through security twice and made my girlfriend and 15 month old daughter stand while they searched her bag"
Pros: "Evertything was on schedule ."
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
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