IAH - DEN

$43 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 10/25. 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

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 22% 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.

Flights Deals
Expert advice
Useful Info
Flights 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

Mon, Sep 8 - Wed, Sep 10
Frontier Logo
6:15 am - 7:55 amIAH-DEN
2h 40mnonstop
Frontier Logo
5:45 pm - 9:14 pmDEN-IAH
2h 29mnonstop
$120Frontier
Find Deal
Sat, Aug 23 - Thu, Aug 28
Frontier Logo
8:08 pm - 9:49 pmIAH-DEN
2h 41mnonstop
Frontier Logo
7:53 pm - 11:36 pmDEN-IAH
2h 43mnonstop
$121Frontier
Find Deal
Fri, Sep 12 - Mon, Sep 15
Frontier Logo
8:44 pm - 10:27 pmIAH-DEN
2h 43mnonstop
Frontier Logo
7:40 am - 11:09 amDEN-IAH
2h 29mnonstop
$122Frontier
Find Deal
Wed, Sep 17 - Tue, Sep 23
Frontier Logo
7:30 am - 9:11 amIAH-DEN
2h 41mnonstop
Frontier Logo
5:45 pm - 9:14 pmDEN-IAH
2h 29mnonstop
$126Frontier
Find Deal
Tue, Aug 12 - Sat, Aug 16
Frontier Logo
7:00 am - 8:42 amIAH-DEN
2h 42mnonstop
Frontier Logo
8:09 pm - 11:49 pmDEN-IAH
2h 40mnonstop
$127Frontier
Find Deal
Tue, Sep 2 - Wed, Sep 10
Frontier Logo
7:30 am - 9:12 amIAH-DEN
2h 42mnonstop
Frontier Logo
5:45 pm - 9:14 pmDEN-IAH
2h 29mnonstop
$128Frontier
Find Deal
Mon, Sep 8 - Wed, Sep 10
Frontier Logo
8:44 pm - 10:27 pmIAH-DEN
2h 43mnonstop
Frontier Logo
5:45 pm - 9:14 pmDEN-IAH
2h 29mnonstop
$130Frontier
Find Deal
Fri, Sep 19 - Mon, Sep 22
Frontier Logo
6:15 am - 7:55 amIAH-DEN
2h 40mnonstop
Frontier Logo
8:15 pm - 11:39 pmDEN-IAH
2h 24mnonstop
$131Frontier
Find Deal
Sat, Aug 23 - Wed, Aug 27
American Airlines Logo
6:05 am - 11:50 amIAH-DEN
6h 45m1 stop
American Airlines Logo
8:34 am - 3:46 pmDEN-IAH
6h 12m1 stop
$159American Airlines
Find Deal
Sat, Aug 9 - Fri, Aug 15
American Airlines Logo
5:05 am - 9:41 amIAH-DEN
5h 36m1 stop
American Airlines Logo
10:35 am - 3:46 pmDEN-IAH
4h 11m1 stop
$166American Airlines
Find Deal
Expert advice

Expert advice for your flight from George Bush Intcntl to Denver

 
Snippets provided in this section are AI-generated based on a summarization of KAYAK-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Airlines
Frontier

Frontier's Premium Bundle includes priority boarding and extra legroom seats.


Check-in online to avoid extra fees at the airport desk.

Read more about Frontierby Stefanie Waldek
United Airlines

United's Economy Plus offers up to 6 inches more legroom than standard economy seats.


Purchase Priority Boarding to ensure overhead bin space for your carry-on.

Airports
IAH

IAH has a sprawling layout with 5 terminals. Use the subway or skyway for quick transfers between terminals.

Read more about IAHby John Walton
DEN

Use the RTD A line train for a cost-effective 40-minute trip from DEN to downtown Denver.

Read more about DENby Harriet Baskas
Our travel experts
Stefanie Waldek

Stefanie Waldek

Expert on Frontier and United Airlines

Stefanie Waldek

Stefanie Waldek

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.

Read more
John Walton

John Walton

Expert on IAH

John Walton

John Walton

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.

Read more
Harriet Baskas

Harriet Baskas

Expert on DEN

Harriet Baskas

Harriet Baskas

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.

Read more
Useful Info

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, Sunday is the most expensive day to fly from Houston George Bush Airport to Denver. For your return ticket, we recommend flying on a Friday 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 January, where tickets cost $131 (return) on average. On the other hand, the most expensive months are December and May, where the average cost of round-trip tickets is $242 and $206 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. For the absolute cheapest price, our data suggests you should book 4 weeks before departure.

Good to know

Low seasonApril
High seasonJuly
Cheapest flight$43
Best time to beat the crowds but there is an average 3% increase in price.
Most popular time to fly and prices are also 3% 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 $43 for a one-way ticket and $120 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?

    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?

    Star Alliance is the only airline alliance operating flights between Houston George Bush Airport and Denver.

  • 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 $314 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 $394 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 $134 or less one-way and $172 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

Air Canada, Air New Zealand, Avianca, +3 more

Air Canada, Air New Zealand, +4 more

Tuesday

Air Canada, Air New Zealand, Avianca, +3 more

Air Canada, Air New Zealand, +4 more

Wednesday

Air Canada, Air New Zealand, Avianca, +3 more

Air Canada, Air New Zealand, +4 more

Thursday

Air Canada, Air New Zealand, Avianca, +3 more

Air Canada, Air New Zealand, +4 more

Friday

Air Canada, Air New Zealand, Avianca, +3 more

Air Canada, Air New Zealand, +4 more

Saturday

Air Canada, Air New Zealand, Avianca, +3 more

Air Canada, Air New Zealand, +4 more

Sunday

Air Canada, Air New Zealand, Avianca, +3 more

Air Canada, Air New Zealand, +4 more

See more direct flights

Direct returns

Denver Intl to Houston George Bush Intcntl

Monday

Air Canada, Air New Zealand, Avianca, +3 more

Air Canada, Air New Zealand, +4 more

Tuesday

Air Canada, Air New Zealand, Avianca, +3 more

Air Canada, Air New Zealand, +4 more

Wednesday

Air Canada, Air New Zealand, Avianca, +3 more

Air Canada, Air New Zealand, +4 more

Thursday

Air Canada, Air New Zealand, Avianca, +3 more

Air Canada, Air New Zealand, +4 more

Friday

Air Canada, Air New Zealand, Avianca, +3 more

Air Canada, Air New Zealand, +4 more

Saturday

Air Canada, Air New Zealand, Avianca, +3 more

Air Canada, Air New Zealand, +4 more

Sunday

Air Canada, Air New Zealand, Avianca, +3 more

Air Canada, Air New Zealand, +4 more

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 8846 reviews
7.7Boarding
7.3Comfort
6.6Food
8.1Crew
7.0Entertainment
Airline reviews

Very rough getting into denver. my kid threw up it was so rough.

4.0 OkayKristin, Jun 2025DSM - DEN
Read more United Airlines reviews

Very rough getting into denver. my kid threw up it was so rough.

Why wasn't this flight departure scheduled eith another crew so that it could leave on time? When we arrived in Denver we had so little time between flights we had run to the connecting flight. We should received some credit for the inconvenience.

I was supposed to be on business class at first class from Denver back to Miami due to weather changes. I missed my connection and it’s put on a flight to Fort Lauderdale. Instead of honoring my business class/1st class ticket, they put me in coach, but there were two first class seats open. I think it’s absolutely disgusting that I paid for first class $1300 ticket and they put me in economy and they had to open seats available and I have still not been refunded the difference. I ended up having to eat a snack box instead of the meal I was supposed to get and did not get home till 2 AM so I think that’s a little pathetic that I had to live off crackers for dinner And my poor dog ate some cheese and salami. Oh yes, apparently when they switched me to the new flight they forgot to mention I had a service dog

Excellent service despite turbulence during the flight. Flight attendants were remarkable!

Flight attendant moved my bag without notifying me and was rude to me when I asked him about it. There was no reason to move it.

Food choices were very limited. Taste of the dishes was average.

I liked all the informational texts. I always knew where to go and when .

Received an email the night before showing that there would be seatback entertainment on our flight. We get on and there was no seatback entertainment. And then it was a scramble to try to set up the iPads for the kids before takeoff so they could watch something for the four hour flight.

The reason I don’t fly United. No in seat entertainment for a long flight and inconsistent WiFi and entertainment available from my device.

It was a good flight. Nothing comes to mind about how it could have been better. It was a newer plane, seemed like a great upgrade from your older ones. Staff was very good as well.

Terrible. Cancelled my original flight. It made getting a boarding pass difficult. The AA employee (in a loud voice, so everyone around could hear) griped at me for not getting a boarding pass 24 hours before. I asked how I was supposed to do that when I had no idea what flight I was going to be on. She said (loudly), “Talk to AA customer service, not me!” I could certainly tell serving customers was not important to her. Our new flight was set to a completely different city. We had to change our rental car, and the price went way up. It took 2-1/2 hours to get checked in. By then our new flight had left. We ended up on stand by and had to split up the family to get to our destination. It cost us the whole first day of the trip. AA needs to employ people who actually care about doing a good job. I suppose those people are getting harder to find, but atleast try.

Loved the staff, boarding and drink options! Wish the comfort of the seat could have been better nevertheless

So awful Unreliable Unfriendly Bad Mad Mean Smelly Hot Late Overbooked Understaffed Expensive Cramped Narcs If they were a fruit they’d be rotten durian

At the beginning of the flight there was some turbulence and the announcement was made that there would be no beverage service. The turbulence only last about 5 minutes then it was smooth sailing. I noticed that first class got their service, but the rest of us did not.

Update departure times in a more timely manner. We are not boarding on time if the plane isn’t arriving until after our scheduled departure time.

Update.us on flight information in a more timely manner. Don’t say we are boarding on time ten minutes before the boarding time when the aircraft isn’t arriving for another forty minutes.

Took off on time and successfully avoided weather that looked to be a problem along the way

Terrible. The flight was delayed two hours due to weather. Then when we got on the plane, the first pilot ended up timing out and we had to wait for a second pilot. Second pile came on board and we tax it out. Had to return back to the gate because of an unruly passenger. Then the copilot timed out. Had to wait for new copilot. Also had to wait for maintenance to check for fuel. Then found out the second pilot timed out and we had to wait for a third pilot. Was ready to go and then needed maintenance again for another issue. In the end, it was 2 o’clock in the morning when they announced that the flight couldn’t go because the third pilot and the second copilot had timed out.

I liked everything. Except that my neck was hurting on the seat. I couldn't sleep.

We were delayed Al ost / hours after boarding so that maintenance had to add oil to the engines. Then the oil they grabbed had been left out in the Dallas record cold and was frozen. They had to go back to the hanger and grab some that was not frozen.

Flight was late. Missed connecting in Denver. My new flight is more than 24 hours later and I have no room, vouchers, or compensation, and might also be bumped from the one tomorrow.

This was one of the first frontier airline flights this spring that wasn't delayed. It actually left on time. Some of the flight crew did not look happy, they didn't smile when the passengers were boarding or getting off the plane, and the passengers initiated greetings, not the staff. To me this was an odd experience to have with any flight/airline. I had a bad experience booking this flight. The price didn't solidify until late hours into the night. Ever time I purchased the ticket, I either received a denial email or an error because the price has changed, but it was never reflected on the flyfrontier or kayak websites until way after midnight on the date of travel. This caused me anxiety and irritation with the websites. Then I noticed a mishap with my name on my voucher as I went to check in, it was incorrect. When I proceeded to correct it, Frontier had no easy, let alone free, way to remedy it. I couldn't correct my name without a $75 charge, I couldn't cancel my voucher to repurchase it with the correct name without a $100 charge, because it was too close to departure. Then calling frontier was nearly impossible to remedy the situation with a human. It's already difficult to want to choose frontier because of all the upcharges, but you feel kinda trapped into doing so because it's the more affordable airline.

Our flight was cancelled. They could do nothing to help us get another flight that was timely. Because the first leg was cancelled we were unable to get to our connection. We had to book on an entirely different airline for today. So we spent more money, lost a day of vacation and will never fly Frontier again, so the 'we are sorry, here is $100 credit' is a joke since we won't be flying on Frontier.

I liked the turn-style feature at gate 209B at LAX. Very efficient process. The gate staff also made several, clearly directed announcements so I felt very informed.

Seats are uncomfortable but price is good. Guess I can put up with misery for four hours.

The plane failed preflight inspection, so we sat there for 90 mins while they tried to fix it. Ultimately, everything was remedied and we made our connecting flight; instead of a 2 hour layover at the airport, we spent it waiting on the plane.

I loked walking out on the tarmac to board and no first class. I didn't like that they have no snacks or onboard wifi to bide your time.

The seats were extremely hard and uncomfortable. It was disappointing even for a budget airline.

Delayed each time on a round trip with no significant weather interference. Updates to flight times came after the fact. 30 min behind in boarding and board and phone still show an on time departure. Some mysterious extra 300 miles that came so surprising they had to fuel while we were already on board?

Our flight was canceled for no known reason. We weren’t told until we were checking in at 5:00 am. This was after our last flight with Frontier where we sat on the plane for three hours (not an exaggeration) before we took off because of a mechanical issue. We won’t be flying Frontier again.

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

Information on your arrival and departure airports

Not what you’re looking for? Find thousands of other hotels, flights, car rentals and package deals with KAYAK.