IAD - IAH

$82 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 6/23. 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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Everything you should know

Cheapest round-trip
$146
Typical prices: $537-$269
Frontier
Wed 8/19Tue 8/25
IAD - IAH • 1 stop
Cheapest non-stop
$371
Typical prices: $588-$344
United Airlines
Wed 5/27Wed 9/2
IAD - IAH • Non-stop
Advice from real travelers
AI-powered summary based on content written by travel experts. AI can make mistakes.
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
Nonstop flights
Every day
You can fly direct with United Airlines. Average duration is 3h 22m
Direct flights
Direct flights
+1
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Direct flights
Direct flights
+1
Avoid delays
Most punctual • 87% on-time
Best time • Fewest delays
Insights
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Top layover airports
Cheapest • Avg $211 (round-trip)
Shortest trip • 5h 53m (one-way)
Insights
Insights
Insights
Insights
When to book
in advance
Our data shows that travelers who book at least 3 weeks in advance save around 28% compared to booking last minute.
Insights
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When to travel
Cheapest • 49% price drop
Most popular
Good to know
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Flight Deals
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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

Wed, Aug 19 - Tue, Aug 25
Frontier Logo
11:12 am - 10:48 pm
IAD
-
IAH
12h 36m
1 stop
Frontier Logo
8:29 am - 6:40 pm
IAH
-
IAD
9h 11m
1 stop
$146Frontier
Mon, Jun 15 - Tue, Jun 16
Frontier Logo
8:57 pm - 7:23 am
IAD
-
IAH
11h 26m
1 stop
Frontier Logo
8:02 pm - 10:22 am
IAH
-
IAD
13h 20m
1 stop
$147Frontier
Thu, Aug 27 - Mon, Aug 31
Frontier Logo
11:11 am - 10:48 pm
IAD
-
IAH
12h 37m
1 stop
Frontier Logo
7:04 pm - 12:53 pm
IAH
-
IAD
16h 49m
1 stop
$148Frontier
Fri, Sep 11 - Wed, Sep 23
Frontier Logo
7:00 am - 12:40 pm
IAD
-
IAH
6h 40m
1 stop
Frontier Logo
12:21 pm - 7:09 pm
IAH
-
IAD
5h 48m
1 stop
$149Frontier
Tue, Jul 28 - Wed, Aug 5
Frontier Logo
8:57 pm - 7:20 am
IAD
-
IAH
11h 23m
1 stop
Frontier Logo
10:52 am - 5:25 pm
IAH
-
IAD
5h 33m
1 stop
$151Frontier
Fri, Sep 11 - Mon, Sep 21
Frontier Logo
7:00 am - 12:40 pm
IAD
-
IAH
6h 40m
1 stop
Frontier Logo
12:21 pm - 7:09 pm
IAH
-
IAD
5h 48m
1 stop
$152Frontier
Sun, Jun 7 - Wed, Jun 17
Frontier Logo
8:47 pm - 7:34 am
IAD
-
IAH
11h 47m
1 stop
Frontier Logo
11:12 am - 11:17 pm
IAH
-
IAD
11h 05m
1 stop
$153Frontier
Thu, Jun 4 - Wed, Jun 10
Frontier Logo
11:07 am - 10:50 pm
IAD
-
IAH
12h 43m
1 stop
Frontier Logo
11:12 am - 11:17 pm
IAH
-
IAD
11h 05m
1 stop
$155Frontier
Wed, Jun 3 - Sat, Sep 5
Frontier Logo
5:07 pm - 8:50 am
IAD
-
IAH
16h 43m
1 stop
Frontier Logo
10:52 am - 11:17 pm
IAH
-
IAD
11h 25m
1 stop
$157Frontier
Wed, Jun 3 - Tue, Jun 16
Frontier Logo
5:07 pm - 8:50 am
IAD
-
IAH
16h 43m
1 stop
Frontier Logo
8:02 pm - 10:22 am
IAH
-
IAD
13h 20m
1 stop
$158Frontier
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.

How much is a round-trip flight from Washington, D.C. Dulles Intl Airport to Houston George Bush Intcntl Airport?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Washington, D.C. Dulles Intl Airport to Houston George Bush Intcntl Airport departing in August.

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 Saturday, 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 Sundays 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 May and March, where the average cost of round-trip tickets is $485 and $440 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 $452, 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 3 weeks before departure, which saves you about 28% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 23 weeks before departure.

Expert advice

Expert advice for your flight from Dulles Intl 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
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.

Stefanie Waldek

Stefanie Waldek

Expert on IAD

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.

Good to know

Low seasonFebruary
Cheapest flight$82
Most popular time to fly and prices are also 49% 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 $82 for a one-way ticket and $146 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, JetBlue, 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 737-900 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?

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

  • 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 Spirit Airlines?

    The two airlines most popular with KAYAK users for flights from Washington, D.C. to Houston are United Airlines and Spirit Airlines. With an average price for the route of $429 and an overall rating of 7.4, United Airlines is the most popular choice. Spirit Airlines is also a great choice for the route, with an average price of $248 and an overall rating of 6.3.

  • 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 $210 or less one-way and $422 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 3 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 9700 reviews
7.3Comfort
7.1Entertainment
7.7Boarding
6.6Food
8.1Crew
Airline reviews

No screens or meal options. Freezing cold. Dirty seats. Left late.

4.0 OkayMaya, May 2026
SFO - IAH
Read more United Airlines reviews

No screens or meal options. Freezing cold. Dirty seats. Left late.

Overall flight was ok. Flight attendant was receptive to assisting passengers with tight connections.

This was the first flight in the morning. We boarded fine. The cabin door was closed and we were ready to go. We were notified by the Captain that ATC issued and ground stop for 40 minutes. So, without even pushing back from the gate, we were already 40 minutes late. We actually were released to push-back and taxi at 30 minutes. But, some passengers had tight connections and were not going to make their connections. Some passengers asked about the delay and the effect on the connections and were told by the cabin attendant that all flights will be delayed and so they should be OK. However, that was not true. My connecting flight was on time and I arrived at IAH with 21 minutes to make my connection. I did and I'm happy about that, but the flight crew should not have given assurances to the passengers who might have missed their connections.

Boarding was again a "free for all". We were boarding group 4, and almost the entire plane was able to board before us. It's a shame that someone who follows the rules, gets the short end of the stick. Not fair.

Fine. The issues I had were associated with luggage being delayed from Turkey to Tanzania

We purchase first class seats for the first time for multiples of standard economy ticket. There was no access to the club lounge and no priority boarding. The meal and the service once on the plane were superior and the seat was nicer, but not worth the price difference. I will be happy to seat in economy and spend the difference on more travel.

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.

They closed the doors earlier than posted. I missed my flight with a slim 5 minutes bc they closed the doors earlier than earlier. My luggage never made it onto the flight and I had to find a new flight to Dallas bc the only option they could rebook me on was for leaving miami.

They canceled my flight and never told me. There was no follow up email. I had to buy another ticket the day of.

It was a full Spirit experience. Got to witness police officers having to deboard a passenger and cost us about an hour of delay. Front seat was spacious and better than expected.

Bad airline to travel with my flight was delayed for more than 3 hours they act like it’s normal

flight delayed because of poor staffing and organization - confusion from gate agents and flight attendant supervisors scheduling a missing flight attendant. flight delay 1 hr 30 min

My flight was delayed by over an hour and the turbulance was horrible.

This flight cancelled. I am in the airport right now and my kids sleep on the floor. We are waiting for information in the line 4 hours and rude woman from spirit airline offers us flight to Austin on 23 February. No water no food offer. The offer to book hotel and they will refund 150$. The nearest hotel 450$ per night. So I got flight to San Antonio 02/22 at 7am. I hate this company, they are rude and no empathy. So many people with kids were there. And I don’t sleep and it is cold here. I don’t have warm clothes for me and my kids. And I don’t have money for transport from San Antonio to my Austin.

The flight was delayed over an hour which got us into DFW at approximately 2:20 am

Terrible. Spirit cancelled the flight with 3 hours notice and were absolutely no help getting another flight. Had to make my own reservation on another airline and arrived in Dallas 12 hours later.

They cancelled the flight due to crew unavailability. The next day they cancelled the flight again.

The staff at the check in counter was so rude. Made you feel Incompetent

Frontier scheduled a 40 minute connection in DEN. What they failed to mention was that they “close the doors” 20 mins prior to departure, which means you only have 20 mins. Not enough time. Possibly against DOT regulations. Filing complaint.

Flight was scheduled at 9:40pm. Got delayed to 10 am, the next day. crazy

The bag check, flight check-in, and onboard experience convinced my wife and me that we will actively go out of our way to avoid flying Frontier Airlines in the future. At bag check, we were informed that check-in could only be completed via the Frontier mobile app. Unfortunately, the app was extremely frustrating—sending us through repetitive, confusing loops that repeatedly forced us to decline add-on services with nearly every click. While most airline apps upsell, this one felt intentionally exhausting. As the process dragged on, we became genuinely concerned that my phone battery would die before check-in could be completed. We approached the bag check staff—who were standing together talking—and explained both our frustration and our predicament. They laughed. Later, my wife described the interaction as “gaslighting,” which felt accurate. We were then informed it would cost $25 per person simply to have our boarding passes printed. From that point forward, the tone of the experience was consistently hostile. The bag check employees were condescending and combative, behaving more like bullies than customer service staff. Unfortunately, that same attitude continued onboard. One flight attendant argued with me when I attempted to stow my backpack in the overhead bin. I explained that we had each paid $75 to check our bags specifically so we would not need to use carry-on space and could have adequate legroom. She demanded to see my ticket, pointed out that it said “no carry-on”—which I acknowledged—and I reiterated that this was precisely why we paid to check our bags. Her response was, “I don’t make the rules.” She then walked away, but not before asking if I “truly wanted to fly back to Chicago today?”—an unnecessary and unmistakable threat. It is also worth noting that despite booking our tickets together in the same transaction, we were not seated together. Upon our return to Chicago—where we could once again sit together—we compared onboard experiences. We both remarked on how unhappy the flight attendants appeared and how each of us was separately asked whether we would like to purchase a beverage. We declined. At no point was water mentioned as an option, leaving us with the clear impression that even water came at a cost—or that complimentary water, if available at all, was deliberately left unmentioned. Overall, the experience was shocking and deeply disappointing, but it was also a profound learning experience—one we will not forget and will not repeat. -Steve

Plane was hot and miserable and the crew was rude!

12 hour delay required getting on and off plane 3 times - would have at least liked to have been offered a snack or drink

They didn’t offer a water, even after I asked

They switched our terminal 3 times and we were delayed for four plus hours!!!

It was an early flight and most people napped/slept and the crew let us which was nice.

The crew acted like they had never done this and kept barking passive aggressive orders at people. + the security line + the delay + sitting on the tarmac for 2 hours + none of the apps or signage updating with correct times

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

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