IAD - IAH

$73 Find Cheap Flights from Washington Dulles Airport 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 Dulles Intl to George Bush Intcntl departing on 12/7. 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 Washington, D.C. 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 Washington, D.C. to Houston, as well as popular online travel agencies
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Flight Deals

Cheap Flights from Dulles Intl to George Bush Intcntl (IAD-IAH)

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

Fri, Dec 5 - Sun, Dec 7
Frontier Logo
9:20 pm - 6:29 pmIAD-IAH
22h 09m1 stop
Frontier Logo
8:01 am - 8:24 pmIAH-IAD
11h 23m1 stop
$138Frontier
Find Deal
Sun, Nov 16 - Thu, Dec 4
Frontier Logo
4:04 pm - 10:07 amIAD-IAH
19h 03m1 stop
Frontier Logo
5:02 pm - 11:10 pmIAH-IAD
5h 08m1 stop
$141Frontier
Find Deal
Sat, Dec 6 - Sun, Dec 14
Frontier Logo
9:20 pm - 7:06 amIAD-IAH
10h 46m1 stop
Frontier Logo
6:05 am - 4:24 pmIAH-IAD
9h 19m1 stop
$142Frontier
Find Deal
Fri, Nov 21 - Mon, Nov 24
Frontier Logo
5:26 pm - 6:36 amIAD-IAH
14h 10m1 stop
Frontier Logo
5:46 pm - 7:45 amIAH-IAD
12h 59m1 stop
$144Frontier
Find Deal
Thu, Dec 4 - Sat, Dec 13
Frontier Logo
5:45 am - 4:10 pmIAD-IAH
11h 25m1 stop
Frontier Logo
4:50 pm - 11:05 pmIAH-IAD
5h 15m1 stop
$146Frontier
Find Deal
Wed, Dec 3 - Fri, Dec 12
Multiple Airlines Logo
9:00 am - 5:26 pmIAD-IAH
9h 26m1 stop
Multiple Airlines Logo
4:06 pm - 11:05 pmIAH-IAD
5h 59m1 stop
$150Multiple Airlines
Find Deal
Thu, Nov 20 - Thu, Nov 27
Frontier Logo
6:55 am - 4:21 pmIAD-IAH
10h 26m1 stop
Frontier Logo
7:50 am - 4:31 pmIAH-IAD
7h 41m1 stop
$151Frontier
Find Deal
Sun, Nov 16 - Tue, Nov 18
Multiple Airlines Logo
4:04 pm - 7:30 pmIAD-IAH
28h 26m1 stop
Multiple Airlines Logo
8:00 am - 8:20 pmIAH-IAD
11h 20m1 stop
$154Multiple Airlines
Find Deal
Sun, Nov 23 - Wed, Dec 3
Frontier Logo
8:44 am - 5:19 pmIAD-IAH
9h 35m1 stop
Frontier Logo
7:59 am - 2:29 pmIAH-IAD
5h 30m1 stop
$155Frontier
Find Deal
Wed, Dec 31 - Sun, Jan 11
Multiple Airlines Logo
7:01 pm - 8:25 amIAD-IAH
14h 24m1 stop
Multiple Airlines Logo
6:05 pm - 11:38 amIAH-IAD
16h 33m1 stop
$156Multiple Airlines
Find Deal

Everything you should know

Our travelers' advice
AI-generated summary based on content written by travel experts
For quick navigation at IAD, use the AeroTrain.
At IAH, rideshare pickups are at Terminals A, B, and C.
Expert advice
Expert advice
Expert advice
Expert advice
When to book
4 weeks
in advance
Our data shows that travelers who book at least 4 weeks in advance save around 34% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
September
Cheapest • 47% price drop
September
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Cheapest round-trip
$138
Overall average: $430
Frontier
Fri 12/5Sun 12/7
IAD - IAH • 1 stop
Cheapest non-stop
$329
Typical prices: $292-$510
United Airlines
Tue 12/2Tue 12/9
IAD - IAH • Non-stop
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to George Bush Intcntl!
Booking Insights

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

Get data-powered insights and trends into flights from Dulles Intl 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 Washington Dulles Airport to Houston George Bush Airport?

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

If your flying dates are flexible, you should consider flying to Houston George Bush Airport on a Friday, 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 Washington Dulles Airport to Houston George Bush Airport. For your return ticket, we recommend flying on a Friday and avoiding Saturdays for the best deals.

What is the cheapest month to fly from Washington, D.C. Dulles Intl Airport 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 Washington, D.C. Dulles Intl Airport 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 Washington, D.C. Dulles Intl Airport to Houston George Bush Intcntl Airport is September, where tickets cost $192 (return) on average. On the other hand, the most expensive months are December and March, where the average cost of round-trip tickets is $430 and $413 respectively.

Can I save money by flying with a layover from Washington, D.C. Dulles Intl Airport to Houston George Bush Intcntl Airport?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

No, with an average price for the route of $326, prices are generally cheapest when you fly direct.

How far in advance should I book a flight from Washington, D.C. Dulles Intl Airport 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 Washington, D.C. Dulles Intl Airport 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 Washington, D.C. Dulles Intl Airport to Houston George Bush Intcntl Airport, you should book around 4 weeks before departure, which saves you about 34% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 16 weeks before departure.

Expert advice

Expert advice for your flight from Dulles Intl to George Bush Intcntl

 
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.
Airports
IAD

For quick navigation at IAD, use the AeroTrain between terminals. It's faster than walking and runs 24 hours.

Read more about IADby Stefanie Waldek
IAH

At IAH, rideshare pickups are at Terminals A, B, and C. Use the subway or skyway to reach these from Terminal E.

Read more about IAHby John Walton
Our travel experts
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
Stefanie Waldek

Stefanie Waldek

Expert on IAD

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

Good to know

Low seasonAugust
Cheapest flight$73
Best time to beat the crowds with an average 1% drop in price.
Most popular time to fly and prices are also 47% lower on average.
Flight from Washington Dulles Airport to Houston George Bush Airport

When to book flights from Dulles Intl to George Bush Intcntl

Are your dates flexible? Find out the best times to travel from Dulles Intl 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 Washington Dulles Airport to Houston George Bush Airport flights

  • What is the cheapest flight from Washington, D.C. Dulles Intl Airport to Houston George Bush Intcntl Airport?

    In the last 3 days, the lowest price for a flight from Washington, D.C. Dulles Intl Airport to Houston George Bush Intcntl Airport was $73 for a one-way ticket and $138 for a round-trip.

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

    A passport is not required to fly from Washington Dulles Airport to Houston George Bush Airport.

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

    When flying out of Washington Dulles Airport you will be using Washington, D.C. Dulles 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 Washington Dulles Airport to Houston George Bush Airport?

    American Airlines, Alaska Airlines, and Hawaiian Airlines offer inflight Wi-Fi service on the Washington Dulles Airport to Houston George Bush Airport flight route.

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

    The Boeing 737 MAX 8 is the aircraft model that flies most regularly on the Washington Dulles Airport to Houston George Bush Airport flight route.

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

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

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

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

  • Which is the best airline for flights from Washington, D.C. to Houston, United Airlines or American Airlines?

    The two airlines most popular with KAYAK users for flights from Washington, D.C. to Houston are United Airlines and American Airlines. With an average price for the route of $377 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 $399 and an overall rating of 7.2.

  • How does KAYAK find such low prices on flights from Washington Dulles Airport 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 Washington Dulles Airport 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 Washington Dulles Airport 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 Washington Dulles 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 Washington Dulles Airport 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 Washington Dulles Airport with another airline. Booking your flights between Washington Dulles Airport 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 Washington Dulles Airport 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 Washington Dulles 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 Washington, D.C. Dulles Intl Airport to Houston George Bush Intcntl Airport

  • Looking for a cheap flight? 25% of our users found flights on this route for $174 or less one-way and $373 or less round-trip.

Prefer to fly direct from Washington Dulles Airport 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 Washington, D.C. Dulles Intl to Houston George Bush Intcntl.
Find which airlines fly direct from Washington, D.C. Dulles Intl Airport to Houston George Bush Intcntl Airport, which days they fly and book direct flights.

Direct departures

Washington, D.C. Dulles Intl to Houston George Bush Intcntl

Monday

United Airlines

United Airlines

Tuesday

United Airlines

United Airlines

Wednesday

United Airlines

United Airlines

Thursday

United Airlines

United Airlines

Friday

United Airlines

United Airlines

Saturday

United Airlines

United Airlines

Sunday

United Airlines

United Airlines

See more direct flights

Direct returns

Houston George Bush Intcntl to Washington, D.C. Dulles Intl

Monday

United Airlines

United Airlines

Tuesday

United Airlines

United Airlines

Wednesday

United Airlines

United Airlines

Thursday

United Airlines

United Airlines

Friday

United Airlines

United Airlines

Saturday

United Airlines

United Airlines

Sunday

United Airlines

United Airlines

See more direct flights

Reviews of the top 4 airlines serving from Dulles Intl to George Bush Intcntl

 
See real verified KAYAK customer reviews for airlines flying from Washington, D.C. 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 Dulles Intl 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 8998 reviews
7.7Boarding
6.6Food
7.3Comfort
7.1Entertainment
8.1Crew
Airline reviews

Crew and customer service were excellent. This flight also had plenty of leg room and seat mounted screens for entertainment. A very pleasant flight all around!

8.0 ExcellentAnonymous, Oct 2025ORD - IAH
Read more United Airlines reviews

Crew and customer service were excellent. This flight also had plenty of leg room and seat mounted screens for entertainment. A very pleasant flight all around!

I was in first class. The outlets at my seat did not work. The plane was shabby and run down. I had prepurchsed a day subscription for internet that was not redeemable. I had to repurchase the internet for my flight and then it didn’t work anyway. Quite disappointed in what was supposed to be the launch of a great vacation.

Flight was good and crew was super polite. However, there were around 5 kids screaming the WHOLE 2 hours. I understand kids have to come but parents need to do something to control their children. They make the experience terrible, especially after finishing 16 hour shifts at the hospital I needed some sleep, which I did not get.

Armrest controller on my seat 35D and nextbooennseat 35E did not work right. Hard to press buttons to recognize and 35D had constantnpressure either upmost down somit was nearly impossible to make selections. .

I flew with my dog and had already purchased my dog’s ticket. Even that morning I had called costumer service to insure that my husband and I had seats together since the website was giving me an error when choosing our seats and the representative mentioned our dog. I showed up early to the airport and when I got to the gate and we started boarding I was help back and told that I was supposed to have a yellow tag and that I should have checked in at the counter for them to give me that tag. I was not aware of this, the representative on the phone did not say anything. Nor did I see it anywhere in the checking process online, so if you travel with a pet and are not checking in luggage, just know that you still have to go to the check in counter when arriving at the airport unless you want to be the last one to board and not have room for your carry on in the overhead bins. Other than that, I had a great experience.

This flight was perfect. No complaints and only the highest regard for the crew and ground staff and how they executed perfectly. I fly a lot with United and would request predictability and transparency in their operations instead of last minute changes.

This is for UA2274 from Houston to Sacramento. The flight was delayed arriving due to mechanical issues so we left about 3 hours later than scheduled. When boarding the plane the temperature inside was excessive - likely close to 100. Pilot apologized and said it was going to improve at altitude, which it did. But before that I honestly thought there might have been more delays removing passengers made ill from the heat. We were delayed leaving due to another mechanical issue. There was not water on the plane due to a panel that was not secured. They did that quickly, but the combination of mechanical issues was rather disturbing and did not reflect well on United.

United sent me a mileage plus number last year but that number is invalid so I can’t use it to check into flights or collect mileage. There is human to speak about the problem, only computers who keep asking me if I am using the correct email. It’s so frustrating and I cannot resolve it.

The woman gate agent in Phoenix was none too sympathetic about my check-in process as I am relatively new with using apps. I almost did not get on because she said I did not check-in. I thought I had via Kayak where I purchased a very expensive ticket. Lesson learned but to be told I may not get on as a matter of factly was difficult to hear.

Gate agent did not hold flight for connection, provided no assistance to get new flight

Flight delay was communicated before leaving for airport which caused it to be a non-event. Great flight and crew!

Wish a flight with more than 2 hours with some snack rather than just cookie/biscuit.

The flight attendant, a black woman with curly hair who sat near Row 21, was wonderful and kind.

Flight delayed and missed connection. Rescheduled flight cancelled after 6 hrs wait. Rerouted thru ORD, flight cancelled, overnight stay in ORD. Still in the air on new flight!

Delayed delayed delayed and no offer for food or vouchers

It took way too long to diagnose and solve the problem of a broken crew member cabin seat. Though compensation for the volunteer who left the flight was very kind.

We fly American Airlines quite a bit. And we always fly business class when traveling internationally. We were a bit disappointed with the comfort of this particular plane as well as the entertainment options.

The AA staff person who checked our bags was curt and almost rude. The FA also seemed unhappy doing her job. Overall it was like riding the school bus back in grade school.

They are still charging me after taking 466 and 833 for round trip from AR to to Bradley airport from 19 to 21. Then poor experience. Am hurt and I will say it on social media. Please stay away from this airline. I see in my bank account they are still taking 644. Am trying to stop it. I used to fly United airlines and I suggest that if you don't want extra charges and good service you go back there. American airlines delayed my flight again and I was late for my meeting, no recompensation but charging me over and over.

They changed our Gate 5 times, and concourse twice. Changed our seats twice.

Prices for bags are extremely expensive and if you go higher on weight, the charge is ridiculous.

Waited at the airport for over 4 hours to board this flight. Terrible airline

Flight was good and on time. Everyone was nice. Seats aren't very comfortable

The seats are too small the plane makes weird noise when landing 🛬

For the minimalist experience, it is really a great ride-- feels a little like public transport i guess

I didn't order food. I requested a Tomato juice and was given a boody mary mix. The serve needs to warn the customer what their given. It wasn't a huge deal, but I wasted $4.50.

EVERYTHING! It was so bad that I will be filing a claim for reimbursement for my seat as I could not fully sit in it due to an obese person being next to me and spilling over into my "space." And my personal item in the overhead been got crushed between two suitcases, so now my business laptop has been damaged beyond repair. Also, it was expensive! Since you pay for EVERYTHING, the cost of the trip was probably more than if you I used an airline that was not discounted. I will NEVER fly Spirit Airlines again!

One of worst experienc my family have every had with this airline. I was informed my Kayak that my flight was delayed and that my family will not make it to houston for our connecting flight. I contacted Spirit customer service to get my family on a later flight due to the delay in Vagas and them not making their connecting flight. The customer rep keep telling me that the flight from vagas is on time and not delayed. She even make to go to the spirit app on my phone and show me how to look up weather or not the flight was delayed. The app showed "on time" 20 minutes later when my family arrived at the airport for their flight, they were told that the flight was delayed and she will not make her connecting flight. I call spirit airline customer support again that night and spoke to another rep who apologize for his collegue and he told me that my family will receive a credit for this, this was on Saturday I still have not received the credit or an email letting me know when I will be credited for this inconvenience. This is not good business and it need to be fixed.

It was very bad it got delayed by 2 hours.Never going to travel with spirit airlines in future.

Flight delayed over 3 or 4 hours because no captain to fly plane. I couldn’t make a connection and had to wait 9 hours for another flight. Had to fly red eye flight. Sucks

Terrible. Flight cancelled with no reasoning and no flights to rebook. Employees were useless and did nothing to help. Did not even know where to retrieve luggage from the cancelled flight. Flyers beware.

No fault of Frontier staff: plane was very late, reached Orlando at 1 am, took a while to get luggage. Weather, gov financial shutdown impact on TSA, air controllers seemed to have multiple flights backed up. Frontier staff seemed to cope as gracefully as possible. It did reassure me that I and my new hip could adapt to travel challenges. Food/entertainment were irrelevant to my trip.

Terrible. The canceled my entire flight when I requested a refund for a trip frontier canceled trip one way.

Boarding was on time and plane departed as scheduled. There are obviously no amenities (food, drink, entertainment) on Frontier, but there also didn't seem to be any issues with luggage space either.

Inbound plane was on time and flight departed on time with no issues while boarding.

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!!!

i was unable to check in the flight. refund requested

It was well done. It was my first time flying with them and I was nervous b/c I have heard of many cancelled and/or delray flights. Everything went smoothly.

Just know that everything, and I mean everything is “ala cart”. 60$ just to put something in the overhead bin. I will never fly Frontier again nor do I recommend them to anyone else.

The single worst check in experience I could imagine. I’ll never do any business with Frontier or any affiliated company

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

Information on your arrival and departure airports

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