DEN - IAH

$64 Find Cheap Flights from Denver to Houston George Bush Airport

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Denver to George Bush Intcntl departing on 4/18. 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 Houston George Bush Intcntl Airport

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Denver to Houston, 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 Denver to Houston, 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
$122
Overall average: $225
Frontier
Sat 4/4Sun 4/5
DEN - IAH • Non-stop
Cheapest one-way
$64
Typical prices: $104-$178
Frontier
Sat 4/18
DEN - IAH • Non-stop
Advice from real travelers
AI-powered summary based on content written by travel experts. AI can make mistakes.
Frontier's Economy Bundle includes carry-on and seat.
Use the West Security Checkpoint at DEN for faster screening.
Expert advice
Expert advice
Expert advice
Expert advice
Nonstop flights
You can fly direct with Frontier and United Airlines. Average duration is 2h 35m
Direct flights
Direct flights
+1
+1
Direct flights
Direct flights
+1
When to book
in advance
Our data shows that travelers who book at least 2 weeks in advance save around 26% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 21% price drop
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 George Bush Intcntl!
Flight Deals
Booking Insights
Expert advice
Flight Deals

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

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Denver to George Bush Intcntl 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 Denver to George Bush Intcntl

Sat, Apr 4 - Sun, Apr 5
Frontier Logo
9:06 pm - 12:48 am
DEN
-
IAH
2h 42mnonstop
Frontier Logo
6:45 am - 8:28 am
IAH
-
DEN
2h 43mnonstop
$122Frontier
Wed, Apr 22 - Fri, Apr 24
Frontier Logo
8:25 pm - 11:56 pm
DEN
-
IAH
2h 31mnonstop
Frontier Logo
3:01 pm - 8:58 pm
IAH
-
DEN
6h 57m
1 stop
$123Frontier
Sat, Apr 25 - Mon, May 4
Frontier Logo
8:00 am - 11:42 am
DEN
-
IAH
2h 42mnonstop
Frontier Logo
3:06 pm - 12:20 am
IAH
-
DEN
10h 14m
1 stop
$124Frontier
Sat, Apr 18 - Sat, Apr 18
Frontier Logo
8:00 am - 11:42 am
DEN
-
IAH
2h 42mnonstop
Frontier Logo
1:48 pm - 9:44 pm
IAH
-
DEN
8h 56m
1 stop
$125Frontier
Thu, Apr 9 - Mon, Apr 13
Frontier Logo
9:06 pm - 12:48 am
DEN
-
IAH
2h 42mnonstop
Frontier Logo
10:28 pm - 12:08 am
IAH
-
DEN
2h 40mnonstop
$126Frontier
Thu, Apr 30 - Sat, May 2
Frontier Logo
9:06 pm - 12:48 am
DEN
-
IAH
2h 42mnonstop
Frontier Logo
12:37 pm - 2:15 pm
IAH
-
DEN
2h 38mnonstop
$127Frontier
Sat, Apr 25 - Tue, Apr 28
Frontier Logo
8:00 am - 11:42 am
DEN
-
IAH
2h 42mnonstop
Frontier Logo
6:10 am - 10:29 pm
IAH
-
DEN
17h 19m
1 stop
$128Frontier
Sat, Apr 11 - Sat, Apr 18
Frontier Logo
5:49 pm - 9:33 pm
DEN
-
IAH
2h 44mnonstop
Frontier Logo
6:10 am - 12:14 pm
IAH
-
DEN
7h 04m
1 stop
$129Frontier
Sat, Apr 25 - Tue, Apr 28
Frontier Logo
8:00 am - 11:42 am
DEN
-
IAH
2h 42mnonstop
Frontier Logo
6:10 am - 12:14 pm
IAH
-
DEN
7h 04m
1 stop
$130Frontier
Sat, May 23 - Tue, May 26
Frontier Logo
9:06 pm - 12:44 am
DEN
-
IAH
2h 38mnonstop
Frontier Logo
6:30 am - 8:06 am
IAH
-
DEN
2h 36mnonstop
$131Frontier
Booking Insights

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

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

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

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

Your flight ticket price will generally be cheaper if you fly to Houston George Bush Airport on a Thursday and more expensive on a Sunday. On your return trip to Denver, you should consider flying back on a Wednesday, and avoid Mondays for better deals.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Denver to Houston George Bush Intcntl Airport, 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 Denver to Houston George Bush Intcntl Airport is October, where tickets cost $174 (return) on average. On the other hand, the most expensive months are March and May, where the average cost of round-trip tickets is $281 and $272 respectively.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Denver to Houston George Bush Intcntl Airport, 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 Denver to Houston George Bush Intcntl Airport, you should book around 2 weeks before departure, which saves you about 26% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 6 weeks before departure.

Expert advice

Expert advice for your flight from Denver to George Bush Intcntl

 
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 seasonAugust
Cheapest flight$64
Best time to beat the crowds with an average 18% drop in price.
Most popular time to fly with an average 28% increase in price.
Flight from Denver to Houston George Bush Airport

When to book flights from Denver to George Bush Intcntl

Are your dates flexible? Find out the best times to travel from Denver to George Bush Intcntl 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 Denver to Houston George Bush Airport flights

  • Are there spas at George Bush Intercontinental Airport (IAH)?

    Those arriving in IAH while fatigued can find various spas at this property that offer therapy before ideal for relaxation and self-indulgence. One of the most frequented amenities here is the XpreSpa where you can pop in for some deep tissue massage, facials, pedicures, and manicures. It’s situated in Terminal A.

  • Which airline allows pets on in the cabin?

    Passengers aboard British Airways should bear in mind that the carrier allows you to board with your furry friends on the trip from DEN to IAH. Note that your four-legged family members must bear valid health certificates. You should also retrain the pet in their kernels throughout the flight.

  • Are there car rentals at George Bush Intercontinental Airport (IAH)?

    Visitors arriving at IAH and want to explore the city in a car will find numerous car agencies running their counters at this establishment, including Avis and Enterprise Rent-A-Car. After the baggage claim area, proceed through the exit where a shuttle will ferry you to the car rental facility.

  • Are there any services for passengers with limited mobility at the IAH upon their arrival?

    IAH is committed to catering to the needs of travelers with disabilities or persons with mobility limitations. The ground subway between the terminals is wheelchair-accessible, and there’s a program on Aira Services for BLV (Blind and Low Vision).

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

    In the last 3 days, the lowest price for a flight from Denver to Houston George Bush Intcntl Airport was $64 for a one-way ticket and $122 for a round-trip.

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

    No

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

    When flying out of Denver you will be using Denver Intl. You will be landing at Houston George Bush Airport, also known as Houston George Bush Intcntl.

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

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

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

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

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

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

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

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

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

    The two airlines most popular with KAYAK users for flights from Denver to Houston are United Airlines and Frontier. With an average price for the route of $354 and an overall rating of 7.4, United Airlines is the most popular choice. Frontier is also a great choice for the route, with an average price of $177 and an overall rating of 5.7.

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

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Houston George Bush Airport from Denver 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 Denver to Houston George Bush Airport?

    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 Houston George Bush Airport with an airline and back to Denver with another airline. Booking your flights between Denver and IAH 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 Denver to Houston George Bush Airport?

    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 Houston George Bush Airport from Denver 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 Denver to Houston George Bush Intcntl Airport

  • Looking for a cheap flight? 25% of our users found flights on this route for $162 or less one-way and $260 or less round-trip.
  • Travelers planning to leave for Houston with early morning flights via Denver International Airport (DEN) should consider sleeping in any of the multiple hotels around this facility. The Westin Denver International Airport and Staybridge Suites Denver International Airport are two such hotels, and they provide courtesy shuttles to and from the airport, ensuring that you’re at the terminal in time for your flight.
  • Denver International Airport (DEN) has one terminal; the Jeppesen Terminal, complemented by three Concourses, A, B, and C. Each terminal features check-in facilities, immigration, customs, and security checkpoints. Check with your airline on which concourse you’ll be departing through. Meanwhile, Automated Guideway Transit System provides quick linkage from the terminal to the concourses, and it departs every 5-15min.
  • Families using Denver International Airport (DEN) will be glad to know that the property caters to the needs of moms and their young ones. The facility features suites where lactating and nursing mothers can breastfeed or pump in privacy. These amenities are situated after security in every concourse. Also, the rooms have sinks, seats, and power sockets.
  • Suppose you want to say a prayer before your voyage from Denver to Houston. In that case, you’ll be happy to know that airport features a suite where you can have a private session with the almighty. This sacred sanctuary is located in Jeppesen Terminal, Level 6 East, and is open between 4 am to midnight, every day. The room constitutes an Islamic Masjid and an inter-faith chapel.
  • In case you want to leave your car behind at DEN before flying out to Houston George Bush Intercontinental Airport (IAH), you’ll have various parking options at your disposal. The parking is categorized into garage, economy, short-term, and long-term lots. Economy parking is on the eastern end of the Jeppesen Terminal, and you get there via a free shuttle that departs from the terminal every 10min.

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

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

Direct departures

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

Direct returns

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

Reviews of the top airlines flying from Denver to George Bush Intcntl

 
See real verified KAYAK customer reviews for airlines flying from Denver to Houston. 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 Denver to George Bush Intcntl? 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 9463 reviews
7.3Comfort
6.6Food
7.1Entertainment
7.7Boarding
8.1Crew
Airline reviews

My flight was canceled a few hours before boarding. I was rebooked on Copa airlines and missed an important meeting .

2.0 MediocreLa Vetra, Mar 2026
LAX - IAH
Read more United Airlines reviews

My flight was canceled a few hours before boarding. I was rebooked on Copa airlines and missed an important meeting .

Everything was on time and service on the flight was great!

The travel company that you have on your site did me so wrong. I don’t know how it happened, but they put my son‘s name on my plane ticket flying to Vietnam. Along with his birthday. They would not have let me fly from Fort Myers to Ho Chi Minh City. I don’t think that I can ever use your service again. I typed my information into the browser along with my passport number and four days before I’m leaving I have to quickly search another ticket to fly out here.

Good flight. Efficient boarding and competent flight crew. No problems until we arrived at our destination gate. We were early so there was an aircraft at the gate that had to move before we could pull in. Then, due to the type of aircraft we flew, the cabin door could not be opened until some luggage from the cargo bay was offloaded to preserve center of gravity characteristics. So, that further delayed deplaning. Despite being 20 minutes early on landing, we ended up being 5 to 10 minutes late after all the delays.

This trip did not start off well. The inbound flight was delayed about 20 minutes. Then, after initial onboarding, the passengers had to deplane due to a mechanical problem. That took about 30 minutes to fix and be cleared. Then, reboarding was chaotic. It took a long time to sort passengers and two passengers on standby were ticketed but there was no seat. So, they had to deplane. One of the flight crew was trying to help passengers figure out a place to put their carry-on bags and that took more time. In the end, our scheduled 10:30 am departure did not actually take off until about 12:05 pm CST. The flight itself was long but we got to Houston. Some passengers missed their connecting flights and had to rebook. Not the best of flights I've had.

Complimentary light meal would be appreciated. But great flight crew service on all legs

Everything was great except for the boarding process. Everyone is lining up all at the same time and it’s hard to tell between the groups as they are way too large.

Very old flight - time to retire it for newer airplanes

Do not like the size of the overhead bin. I think staff should monitor the size of suitcases that are being carried on by passengers to ensure they meet the size requirement.

Everything except the food and entertainment. It was a great experience though

There's no seats that lean back with little leg space i wad uncomfortable the entire flight. Your charges for extra baggage is despicable and costly!!

There was no food and no entertainment, so I'm not sure why these are even in the survey, as my understanding is frontier does not ever offer food without a few, not even a snack, and there are no screens so unless the flight safety talk is our entertainment why ask how we liked it?. One of the flight attendants say in the back of the plane as people filed in to their seats, yelling orders about where to put baggage and telling people to hurry up. It was the least professional experience I've ever had on a flight.

Not clean and was told I would get a great seat and it was not great at all

Delayed. Text notifications were slow. Not much information o what was happening. Boarding was slow and confusing. Wasn’t even offered water other flight. Had to ask. No entertainment at all. Felt like.a Greyhound bus.

When I wanted to check in 3 hours prior to boarding time, the employees mentioned “a little over an hour delay” so I waited for an hour then I went to go look for food in the terminal and most people from that flight were in the same area looking for food. Finally I decided after food to check to see if it’s anytime closer and now it’s 2 mins until boarding closes?! What are you kidding me? I didn’t receive anything via sms about boarding now nor via email or on the intercom. I luckily made it through, barely, and then there’s no room for my carry on mind you I’m in the very first row so I had to place my purse in one further row back and my carry on sections down. Not sure who pays for better seats to get your stuff placed all over the plane but that was the worst experience I’ve ever had flying with anyone.

Frontier is the Walmart of airlines. Frontier has removed adjustability and comfort from their seats to make the flight lighter and save gas. This makes it impossible to sleep on their flights. Their customer service is abysmal. Once, I bought a drink on the plane, and they swiped my credit card on the plane to pay for it. Then I got three weeks of daily notices from my bank telling me they tried to charge the wrong card number over and over again. I tried to call them, but they removed the ability to actually talk to someone that can resolve such a problem from their company to cut corners. The only way to talk to someone in person is to go to the check-in counter at the airport (40 minutes drive from my house). Eventually their system gave up on trying to charge the card, after 21 days of repeated tries. They don't pad their prices even a little to handle customer service issues like missed flights. They also have a blanket policy preventing helping you reschedule a missed flight if their system says you "cancelled" your own flight online. This is a major problem because their website is broken on mobile devices, the only web browser you have at the airport when their gate staff tell you that you have to reschedule your own missed flight online because they can't help you. I tried to reschedule my flight on my android device and instead, their website crashed and "cancelled" my missed flight. When I got to the counter, the agent argued with me for 5 minutes insisting that I intentionally cancelled my own flight (implying I had to buy another flight). She missed the point: the problem was that I could not buy another flight because their website is broken. I left to avoid more conflict with the "customer service" agent. I tried to redress my issue with their only other "customer service" chanel available: the contact form on their website. The response I got was more of the same: you cancelled your own flight, according to our website / computer records, therefore we won't help you. I was trying to explain the problem with their broken website that cost me hundreds of dollars by crashing / malfunctioning and resulting in a cancelled flight, but they only had deaf ears for this problem. Worst customer service I have ever experienced. I will never buy another Frontier flight again, because it is a risky, painful move that I will likely regret often.

What I expected, nickeled and dined and a frontier flight attendant loudly complained about her job and lack of communication as she headed to the gate on her cell phone. Not professional.

baggage clamed had to wait over a hour and half for all people on my flight it was terrible

My flight was canceled I was promised a reginf still not received.

I’m not gonna fly Frontier Airlines because booking is not an option. No water or food is for high price, not equipped for health emergency incompetent crew for emergency services. Cheap airline shows it is cheaper in all service categories. Boarding is the best of all airlines!

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

Information on your arrival and departure airports