IAH - DEN

$44 Find Cheap Flights from Houston George Bush Airport to Denver

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from George Bush Intcntl to Denver departing on 2/26. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Denver

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Houston to Denver, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Houston to Denver, as well as popular online travel agencies
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 23% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Everything you should know

Cheapest round-trip
$80
Overall average: $148
Frontier
Tue 2/17Sat 2/28
IAH - DEN • Non-stop
Cheapest non-stop
$76
Typical prices: $77-$254
Frontier
Wed 2/25Sat 2/28
IAH - DEN • Non-stop
Our travelers' advice
AI-powered summary based on content written by travel experts. AI can make mistakes.
United's Economy Plus offers extra legroom seats.
Frontier's Premium Bundle includes priority boarding.
Expert advice
Expert advice
Expert advice
Expert advice
Video guide: How to find cheap flights to Denver
Watch video
Watch video
Watch video
Watch video
When to book
2 weeks
in advance
Our data shows that travelers who book at least 2 weeks in advance save around 32% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
February
Cheapest • 23% price drop
February
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Denver!
Flight Deals
Booking Insights
Expert advice
Flight Deals

Cheap Flights from George Bush Intcntl to Denver (IAH-DEN)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from George Bush Intcntl to Denver that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from George Bush Intcntl to Denver

Tue, Feb 17 - Sat, Feb 28
Frontier Logo
6:45 am - 8:26 am
IAH
-
DEN
2h 41mnonstop
Frontier Logo
12:20 pm - 3:52 pm
DEN
-
IAH
2h 32mnonstop
$80Frontier
Tue, Mar 31 - Tue, Apr 7
Frontier Logo
10:56 pm - 12:38 am
IAH
-
DEN
2h 42mnonstop
Frontier Logo
9:06 pm - 12:48 am
DEN
-
IAH
2h 42mnonstop
$81Frontier
Sun, Feb 15 - Tue, Feb 24
Frontier Logo
6:39 am - 8:20 am
IAH
-
DEN
2h 41mnonstop
Frontier Logo
3:36 pm - 7:14 pm
DEN
-
IAH
2h 38mnonstop
$82Frontier
Thu, Feb 26 - Thu, Feb 26
Frontier Logo
4:59 pm - 6:44 pm
IAH
-
DEN
2h 45mnonstop
Frontier Logo
9:00 pm - 12:33 am
DEN
-
IAH
2h 33mnonstop
$83Frontier
Sat, Feb 7 - Sat, Feb 14
Frontier Logo
4:08 pm - 5:53 pm
IAH
-
DEN
2h 45mnonstop
Frontier Logo
9:00 pm - 12:33 am
DEN
-
IAH
2h 33mnonstop
$87Frontier
Fri, Feb 27 - Mon, Mar 2
Frontier Logo
9:54 pm - 11:37 pm
IAH
-
DEN
2h 43mnonstop
Frontier Logo
6:00 am - 9:36 am
DEN
-
IAH
2h 36mnonstop
$88Frontier
Sat, Feb 21 - Mon, Feb 23
Frontier Logo
4:59 pm - 6:44 pm
IAH
-
DEN
2h 45mnonstop
Frontier Logo
9:00 pm - 12:33 am
DEN
-
IAH
2h 33mnonstop
$89Frontier
Wed, Mar 11 - Mon, Mar 16
Frontier Logo
10:56 pm - 12:38 am
IAH
-
DEN
2h 42mnonstop
Frontier Logo
9:06 pm - 12:39 am
DEN
-
IAH
2h 33mnonstop
$91Frontier
Wed, Feb 25 - Sat, Feb 28
Frontier Logo
8:45 am - 10:30 am
IAH
-
DEN
2h 45mnonstop
Frontier Logo
8:54 am - 8:51 pm
DEN
-
IAH
10h 57m
1 stop
$92Frontier
Tue, Feb 17 - Mon, Feb 23
Frontier Logo
8:45 am - 10:30 am
IAH
-
DEN
2h 45mnonstop
Frontier Logo
11:00 am - 2:33 pm
DEN
-
IAH
2h 33mnonstop
$96Frontier
Booking Insights

KAYAK's insights & trends for George Bush Intcntl to Denver flights

Get data-powered insights and trends into flights from George Bush Intcntl to Denver to help you find the cheapest flights, the best time to fly and much more.

Find cheap flights to Denver
Find cheap flights to Denver

Planning a trip from George Bush Intcntl to Denver? KAYAK’s data-powered insights will help you find cheap flights. Learn the best time to fly, how early to book your ticket, and other tips to secure great prices.

What’s the cheapest day of the week to fly from Houston George Bush Airport to Denver?

The average price of all round-trip flights from Houston George Bush Intcntl Airport to Denver clicked on KAYAK for each day over the last 12 months.

If your flying dates are flexible, you should consider flying to Denver on a Wednesday, as we generally find the cheapest rates on that day for this route. On the other hand, Monday is the most expensive day to fly from Houston George Bush Airport to Denver. For your return ticket, we recommend flying on a Thursday and avoiding Sundays for the best deals.

What is the cheapest month to fly from Houston George Bush Intcntl Airport to Denver?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Houston George Bush Intcntl Airport to Denver, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Houston George Bush Intcntl Airport to Denver is February, where tickets cost $148 (return) on average. On the other hand, the most expensive months are December and May, where the average cost of round-trip tickets is $244 and $207 respectively.

How far in advance should I book a flight from Houston George Bush Intcntl Airport to Denver?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Houston George Bush Intcntl Airport to Denver, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Houston George Bush Intcntl Airport to Denver, you should book around 2 weeks before departure, which saves you about 32% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 9 weeks before departure.

Expert advice

Expert advice for your flight from George Bush Intcntl to Denver

 
AI-powered summary based on content written by travel experts. AI can make mistakes.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
Stefanie Waldek

Stefanie Waldek

Expert on Frontier and United Airlines

Stefanie Waldek is a freelance space, travel, and design writer based in Saratoga Springs, NY. Her words have appeared in Space.com, Travel + Leisure, Condé Nast Traveler, Architectural Digest, and House Beautiful, among other publications. An expert in aviation and expedition cruising, Stefanie is frequently up in the air or on the sea, likely en route to Antarctica or the Arctic.

John Walton

John Walton

Expert on IAH

Independent aviation journalist John Walton took his first flight at eight weeks old and hasn’t stopped travelling since. A world-renowned expert in airlines and the passenger experience, he writes in depth on aviation, is a resident expert on travel in Japan and France, and offers a uniquely queer perspective on travelling the world.

Harriet Baskas

Harriet Baskas

Expert on DEN

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Good to know

Low seasonApril
Cheapest flight$44
Best time to beat the crowds with an average 8% drop in price.
Most popular time to fly and prices are also 24% lower on average.
Flight from Houston George Bush Airport to Denver

When to book flights from George Bush Intcntl to Denver

Are your dates flexible? Find out the best times to travel from George Bush Intcntl to Denver based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Houston George Bush Airport to Denver flights

  • Does Denver International Airport have an airport hotel?

    Yes. For those looking to stay at an airport hotel, book your stay at the Westin Hotel at Denver International Airport. The 519-room hotel with a conference center is just steps away from the main terminal. It is located just one level above the escalator at the Transit Center. It is a good place for business travelers to hold meetings and conferences, and the hotel also has an onsite restaurant.

  • Which family services are available at George Bush Intercontinental Airport?

    Baby care facilities are provided in most restrooms (gents, ladies, and family). The terminals are also dotted with nurseries. Private spaces are furnished with baby cots and rocking chairs where mothers can lull their babies to sleep. There are also lactation rooms at IAH, a private place where mothers can breastfeed their babies.

  • What are accessible services available at George Bush Intercontinental Airport?

    IAH is a barrier-free airport. Passengers with reduced mobility can access all areas using the elevators and ramps provided. There are reserved parking spots at the garages as well. Tactile guide paths and braille signage are in place to help the visually impaired safely navigate the airport. TTY telephones, visual paging, and white courtesy phones are also provided at IAD for the hearing impaired. The same white courtesy phones can be used to request assistance from airport staff.

  • What are the transport options from Denver International Airport?

    The most convenient way of getting downtown is taking the Regional Transportation (RTD) trains. You can get these trains from the Denver Airport Station, which departs every 15min. The Regional Transportation Department (RTD) also provides buses from the airport to downtown, and you’ll find them at the station too. There are charter buses offered at the airport to locations around Colorado, and you can reserve your space at the ground transportation area. Metered taxis are also available at the airport, and a flat rate applies to downtown, Boulder, and Denver Tech Center. Car rentals are an option too, and Avis, Hertz, Budget, and National have counters at DEN.

  • What is the cheapest flight from Houston George Bush Intcntl Airport to Denver?

    In the last 3 days, the lowest price for a flight from Houston George Bush Intcntl Airport to Denver was $44 for a one-way ticket and $80 for a round-trip.

  • Do I need a passport to fly between Houston George Bush Airport and Denver?

    No, a passport isn't needed to fly from Houston George Bush Airport to Denver. However, local authorities might ask for an official ID.

  • Which airports will I be using when flying from Houston George Bush Airport to Denver?

    On your way to Denver, you’ll fly out from Houston George Bush Intcntl. You’ll be landing at Denver Intl.

  • Which airlines offer Wi-Fi service onboard planes from Houston George Bush Airport to Denver?

    JetBlue, Delta, American Airlines, and Alaska Airlines offer inflight Wi-Fi service on the Houston George Bush Airport to Denver flight route.

  • Which aircraft models fly most regularly from Houston George Bush Airport to Denver?

    The Airbus A321neo is the aircraft model that flies most regularly on the Houston George Bush Airport to Denver flight route.

  • Which airline alliances offer flights from Houston George Bush Airport to Denver?

    oneworld, and Star Alliance are the airline alliances operating flights between Houston George Bush Airport and Denver, with oneworld being the most commonly used for this route.

  • On which days can I fly direct from Houston George Bush Airport to Denver?

    There are nonstop flights from Houston George Bush Airport to Denver on a daily basis.

  • Which is the best airline for flights from Houston to Denver, United Airlines or American Airlines?

    The two airlines most popular with KAYAK users for flights from Houston to Denver are United Airlines and American Airlines. With an average price for the route of $316 and an overall rating of 7.4, United Airlines is the most popular choice. American Airlines is also a great choice for the route, with an average price of $306 and an overall rating of 7.2.

  • How does KAYAK find such low prices on flights from Houston George Bush Airport to Denver?

    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 George Bush Airport to Denver.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Houston George Bush Airport to Denver?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Denver from Houston George Bush Airport is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Houston George Bush Airport to Denver?

    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 George Bush Airport with another airline. Booking your flights between Houston George Bush Airport and DEN can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Houston George Bush Airport to Denver?

    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 George Bush Airport up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Houston George Bush Intcntl Airport to Denver

  • Looking for a cheap flight? 25% of our users found flights on this route for $92 or less one-way and $146 or less round-trip.
  • Houston George Bush International Airport (IAH) is a massive airport consisting of five terminals. The airport has all terminals interconnected by a subway system, landside, and a skyway airside for easy movement around the airport complex.
  • Pets are welcome at IAH as long as they remain within their carriers as TSA requires. The airport has four designated pet relief areas, and you’ll find them at Terminals B, C, D, and E, post-security.
  • Around 654 kg of carbon is emitted per passenger on flights from Houston to Denver. However, you can fly more sustainably with Frontier Airlines, United Airlines, and Southwest Airlines. These airlines emit 67%, 62%, and 59% less carbon per passenger on flights from IAH to Denver International Airport (DEN).
  • Fly with American Airlines, United Airlines, or Delta to relax and unwind at their airline lounges at Denver International Airport (DEN) after your flight. These airlines have pay-per-use lounges at DEN that admittance requires your flight ticket and a one-time fee.
  • If you have some time to pass before your flight, check out Xpress Spa in Terminal A at IAH. This establishment offers spa services that take less than 30min, and you’ll find them near Gate 17.

Prefer to fly direct from Houston George Bush Airport to Denver?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from Houston George Bush Intcntl to Denver Intl.
Find which airlines fly direct from Houston George Bush Intcntl Airport to Denver Intl Airport, which days they fly and book direct flights.

Direct departures

Houston George Bush Intcntl to Denver Intl

Monday

Frontier, United Airlines

Frontier, United Airlines

Tuesday

Frontier, United Airlines

Frontier, United Airlines

Wednesday

Frontier, United Airlines

Frontier, United Airlines

Thursday

Frontier, United Airlines

Frontier, United Airlines

Friday

Frontier, United Airlines

Frontier, United Airlines

Saturday

Frontier, United Airlines

Frontier, United Airlines

Sunday

Frontier, United Airlines

Frontier, United Airlines

See more direct flights

Direct returns

Denver Intl to Houston George Bush Intcntl

Monday

Frontier, United Airlines

Frontier, United Airlines

Tuesday

Frontier, United Airlines

Frontier, United Airlines

Wednesday

Frontier, United Airlines

Frontier, United Airlines

Thursday

Frontier, United Airlines

Frontier, United Airlines

Friday

Frontier, United Airlines

Frontier, United Airlines

Saturday

Frontier, United Airlines

Frontier, United Airlines

Sunday

Frontier, United Airlines

Frontier, United Airlines

See more direct flights

Reviews of the top 3 airlines serving from George Bush Intcntl to Denver

 
See real verified KAYAK customer reviews for airlines flying from Houston to Denver. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from George Bush Intcntl to Denver? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
United AirlinesOverall score based on 9205 reviews
7.1Entertainment
8.1Crew
7.7Boarding
7.3Comfort
6.6Food
Airline reviews

The flight was delayed by two de-icings. The seatbelt did not work correctly. It did not stay tight.

6.0 GoodAnonymous, Jan 2026
MKE - DEN
Read more United Airlines reviews

The flight was delayed by two de-icings. The seatbelt did not work correctly. It did not stay tight.

Hotter than Hades in August. Why, why do crews think that in the winter when we are already dressed for cold weather we need a cabin that is 82 degrees. Even the vents were blowing hot air.

Flight was delayed. De-icing took a while. When we landed had to wait for another plane to vacate our gate. Just an overall bad experience.

Not good - outbound flight was delayed and missed my connection even though I got to the gate after running through the airport - the agent would not let me on because the door was closed (flight had not left). There was no notification from United - overall experience was very disappointing. Additionally, I was downgraded from first class to coach on the alternative flight

United have really come back. Airport and boarding process is clear and good, app and information also very good

The entertainment available didn’t work for anyone on the flight. Long 6 hr flight with no entertainment option and the staff didn’t know until an hour into the flight when we made sure they knew about it. They had no way to fix it.

Late FA meant slow boarding. WiFi did not work. I’m a medium plus sized passenger. The seatbelt was for the first time ever barely fitting. And we delayed on the tarmac 40 min

My husband and I had boarded the flight from Denver to Chicago, and one of the last passengers to get on the plane opened the overhead bin above my husband's seat and threw his bag out of the bin to make space for his own. He said, "Mine is bigger!" The flight attendant supported the new passenger. They didn't care that my husband has two artificial knees and must have the foot room in front of his seat to be able to fit his legs in -- and to be able to stand, much less walk, at the end of the flight. I have never seen this happen before, and it was a disaster.

I understand stuff happens, but plane failures are likely due to lack of maintenance. Additionally, air conditioning wasn't working, no snack/drink service, no WiFi. Fortunately, the crew was communicative and light-hearted. United grabbed another plane and we were able to get to our destination.

Had to cancel first flight because Airporter Bus took over 3 hrs to get to airport which resulted in an extra $378 dollar fare . Is there anyway I can be reimbursed for initial fare since it was not my fault? Sent from my iPhone EJ Ledet

The flight attendant use 1.5 hours to answer my call. My dirty food tray was unattended.

I booked an aisle seat and was given a middle. At 6'4" 230lbs, it is not ideal to fly in the middle row for myself and passengers.

Concern Regarding Significant Gate Delay and Jet Bridge Issue Dear Customer Relations Team, I am writing to express my disappointment with the experience I had on my recent flight AA 2414 on Sunday January 18, 2026. What should have been a routine departure turned into a frustrating and avoidable delay due to an issue with the jet bridge at the gate. As a result, the flight was delayed by approximately 90 minutes while multiple gate changes were attempted. The lack of clear communication during this period made the situation even more challenging. Passengers were left uncertain about the cause of the delay, the expected timeline, and the next steps. This not only disrupted travel plans but also created unnecessary stress for everyone on board. I understand that operational issues can arise, but a malfunctioning jet bridge and the resulting extended delay suggest an area where procedures or equipment maintenance may need attention. I hope you will review this incident to prevent similar disruptions in the future. I would appreciate acknowledgment of this concern and consideration of appropriate compensation for the inconvenience and lost time caused by this delay. Thank you for taking the time to review my experience. I look forward to hearing from you. Sincerely, Dion Dillard

They made me pay $40 to check a bag that was listed as free when I bought my ticket. Then before boarding they offered to check any bags free.

My seat tv didn’t work the whole trip. And the seat space is too small despite being seated at the front.

The seat cushions were very worn so they were extremely uncomfortable.

Delayed, no updates, had a rewards number but was not working

AA should improve their in air internet & entertainment options. Seems unreasonable to charge $20/hr and should have some form of free connections. The entertainment options are also pretty limited, movies are outdated and the series only show 3-5 episodes.

Flight delay and multiple gate changes including a change near boarding time to another terminal, which in DFW is a pain. Pre-boarding delay and also a further delay on the ground after boarding. About an hour and a half total delay.

Seats were much more cramped then on the 737. Narrower and rows closer together. Flight was absolutely packed and the plugs under the seats didn't work. Was forced to check my bag even though previous flight had no issue with it.

It was costly and difficult to check in. $85 to take a small suitcase with me, carry on or checked and $75 on the return trip, Plus $25 if I didn't check my self in check in $25, because I couldn't do it on the kiosk. Small very uncomfortable seats, waited on the runway for near an hour each way. It was my worst flight to date.

Due to weather, my flight was delayed, further delayed, then canceled. I eventually got through to a support person who helped me find a different route out of MSP, but to get to DIA, they didn't want to, but eventually did help with the connection ticket purchase. But even this replacement flight was delayed time and time again, and I would have missed my connecting flights and I didn't want to get stuck in a layover city, so after 12 hours at the airport with two young boys who were very tired, we just cancelled our plans and spent the week at home, instead of Nana's.

I knew going into this that Frontier, being a low cost carrier, would be pretty bare bones and charge for most extras but this was made up for by the fact that the airplane was a reasonably new Airbus, every employee was great and best of all, Everett Washington is an amazing airport - thanks Frontier for flying there!!!

Seats were new and comfortable. Staff was fine. Missed my connection due to weather -which wasn’t their fault- but got no help at all. Gate staff sent me to customer service, which was and stayed unstaffed. Sign with QR code directed me to call or chat. Chat was useless. Call was returned after an hour. No itinerary offered by Frontier could get me home in less than 30 hours. Rebooked with another airline and got a partial refund that came to about 10 percent of what I paid to get home.

The experience was good. No frills but I got there safe and sound and on time.

As every law enforcement agency I could imagine surrounded the plane and we didn’t disembark for 2 hours and then had to stick around for another hour to go get our personal belongings after leaving them behind and being bused away from the plane, it was scary and inconvenient. We were given no information as to why this was happening. Lack of communication with passengers was disappointing.

Frontier Airlines was AWFUL. I was an hour early for my flight and the lady refused to check me in. I had to purchase a whole new ticket with a different airline.

Late, terrible communication, horrible planning of passenger seating until the literal last minute. One of the worst flying experiences of my life. Y'all suck

First of all, we never got on the connecting flight to Denver. They delayed our flight for two hours. If we would have gotten on that flight, we would have been stuck in Denver for 13 hours. So we re- routed our flight for a straight through flight to Oklahoma two days later. THEN, they delayed that flight for two hours. After that we were able to finally get on our flight and come home. Frontier Airlines - one of the worst airlines I have ever been on.

Terrible communication with weather delay, lost baggage, near impossible to reach customer service

Everything you need to know for your flight from George Bush Intcntl to Denver

Information on your arrival and departure airports