IAH - IAD

$76 Find Cheap Flights from Houston George Bush Airport to Washington Dulles 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 George Bush Intcntl to Dulles Intl departing on 5/12. 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 Washington, D.C. Dulles Intl Airport

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Houston to Washington, D.C., 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 Washington, D.C., as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$124
Typical prices: $618-$340
Frontier
Thu 5/21Mon 5/25
IAH - IAD • 1 stop
Cheapest non-stop
$371
Typical prices: $451-$349
United Airlines
Wed 6/3Tue 6/9
IAH - IAD • Non-stop
Advice from real travelers
AI-powered summary based on content written by travel experts. AI can make mistakes.
IAH's security lines are standard TSA, check wait times.
Take the Silver Line Metro from IAD to downtown D.C.
Expert advice
Expert advice
Expert advice
Expert advice
Nonstop flights
You can fly direct with United Airlines. Average duration is 3h 11m
Direct flights
Direct flights
+1
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Direct flights
Direct flights
+1
Top layover airports
Cheapest • Avg $144 (round-trip)
Shortest trip • 6h 02m (one-way)
Insights
Insights
Insights
Insights
When to book
in advance
Our data shows that travelers who book at least 4 weeks in advance save around 47% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 31% price drop
Most popular
Good to know
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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 Dulles Intl!
Flight Deals
Booking Insights
Expert advice
Flight Deals

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

 
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 Dulles Intl 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 Dulles Intl

Thu, May 21 - Mon, May 25
Frontier Logo
6:10 am - 4:21 pm
IAH
-
IAD
9h 11m
1 stop
Frontier Logo
8:47 pm - 7:34 am
IAD
-
IAH
11h 47m
1 stop
$124Frontier
Tue, May 26 - Tue, Jun 2
Frontier Logo
8:02 pm - 10:12 am
IAH
-
IAD
13h 10m
1 stop
Frontier Logo
7:37 pm - 7:34 am
IAD
-
IAH
12h 57m
1 stop
$125Frontier
Tue, May 26 - Sat, May 30
Frontier Logo
8:02 pm - 10:12 am
IAH
-
IAD
13h 10m
1 stop
Frontier Logo
11:07 am - 10:50 pm
IAD
-
IAH
12h 43m
1 stop
$126Frontier
Tue, May 26 - Sat, May 30
Frontier Logo
8:02 pm - 10:12 am
IAH
-
IAD
13h 10m
1 stop
Frontier Logo
11:07 am - 10:50 pm
IAD
-
IAH
12h 43m
1 stop
$127Frontier
Sat, May 30 - Mon, Jun 8
Frontier Logo
6:15 am - 4:21 pm
IAH
-
IAD
9h 06m
1 stop
Frontier Logo
8:47 pm - 7:23 am
IAD
-
IAH
11h 36m
1 stop
$128Frontier
Tue, May 26 - Wed, May 27
Multiple Airlines Logo
8:02 pm - 10:12 am
IAH
-
IAD
13h 10m
1 stop
Multiple Airlines Logo
6:22 pm - 9:03 am
IAD
-
IAH
15h 41m
1 stop
$140Multiple Airlines
Wed, May 20 - Mon, May 25
Frontier Logo
5:45 am - 5:27 pm
IAH
-
IAD
10h 42m
1 stop
Frontier Logo
7:45 am - 10:50 pm
IAD
-
IAH
16h 05m
1 stop
$141Frontier
Thu, May 14 - Mon, May 18
Frontier Logo
8:02 pm - 5:12 pm
IAH
-
IAD
20h 10m
1 stop
Frontier Logo
7:27 pm - 9:00 am
IAD
-
IAH
14h 33m
1 stop
$142Frontier
Mon, May 18 - Wed, May 20
Frontier Logo
8:50 pm - 10:12 am
IAH
-
IAD
12h 22m
1 stop
Frontier Logo
7:40 am - 2:58 pm
IAD
-
IAH
8h 18m
1 stop
$143Frontier
Tue, May 19 - Wed, May 20
Frontier Logo
9:55 am - 5:52 pm
IAH
-
IAD
6h 57m
1 stop
Frontier Logo
7:40 am - 2:58 pm
IAD
-
IAH
8h 18m
1 stop
$146Frontier
Booking Insights

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

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

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

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

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

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

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

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 Washington, D.C. Dulles Intl 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 Houston George Bush Intcntl Airport to Washington, D.C. Dulles Intl Airport is August, where tickets cost $290 (return) on average. On the other hand, the most expensive months are April and March, where the average cost of round-trip tickets is $560 and $489 respectively.

Can I save money by flying with a layover from Houston George Bush Intcntl Airport to Washington, D.C. Dulles Intl 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 $440, prices are generally cheapest when you fly direct.

How far in advance should I book a flight from Houston George Bush Intcntl Airport to Washington, D.C. Dulles Intl Airport?

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 Washington, D.C. Dulles Intl 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 Houston George Bush Intcntl Airport to Washington, D.C. Dulles Intl Airport, you should book around 4 weeks before departure, which saves you about 47% 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 George Bush Intcntl to Dulles Intl

 
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$76
Best time to beat the crowds but there is an average 2% increase in price.
Most popular time to fly and prices are also 25% lower on average.
Flight from Houston George Bush Airport to Washington Dulles Airport

When to book flights from George Bush Intcntl to Dulles Intl

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

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

    In the last 3 days, the lowest price for a flight from Houston George Bush Intcntl Airport to Washington, D.C. Dulles Intl Airport was $76 for a one-way ticket and $124 for a round-trip.

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

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

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

    Houston George Bush Airport and Washington Dulles Airport are both served by 1 main airport. You will leave Houston George Bush Airport from Houston George Bush Intcntl and will be arriving at Washington, D.C. Dulles Intl.

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

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

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

    The Boeing 737-900 is the aircraft model that flies most regularly on the Houston George Bush Airport to Washington Dulles Airport flight route.

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

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

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

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

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

    The two airlines most popular with KAYAK users for flights from Houston to Washington, D.C. are United Airlines and Spirit Airlines. With an average price for the route of $437 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 $172 and an overall rating of 6.3.

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

  • 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 Washington Dulles Airport?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Washington Dulles Airport 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 Washington Dulles 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 Washington Dulles Airport with an airline and back to Houston George Bush Airport with another airline. Booking your flights between Houston George Bush Airport and IAD 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 Washington Dulles 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 Washington Dulles Airport 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 Washington, D.C. Dulles Intl Airport

  • Looking for a cheap flight? 25% of our users found flights on this route for $360 or less one-way and $694 or less round-trip.

Prefer to fly direct from Houston George Bush Airport to Washington Dulles Airport?

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

Direct departures

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

Direct returns

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

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

 
See real verified KAYAK customer reviews for airlines flying from Houston to Washington, D.C.. 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 Dulles Intl? 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 9681 reviews
7.1Entertainment
7.7Boarding
7.3Comfort
6.6Food
8.1Crew
Airline reviews

Was great in general, try to respect time and excuses when slight changes have been made, appreciated!

8.0 ExcellentAnonymous, Apr 2026
DEN - IAD
Read more United Airlines reviews

Was great in general, try to respect time and excuses when slight changes have been made, appreciated!

Terrific in every way. On time, professional staff, multiple movie options to select, great food and drink.

My bags were misplaced!!! Im in a foreign country with no bags

I liked that it was on time, however, the food was not good.

Offered to check carry on to final destination. This is the most absurd thing in the world. I'm carrying on because I need what is in the carry-on. I'm okay with picking up at next stop but then I will be on much larger plane that can accommodate it. Also, if there is ever a change to your flight. Go to the airport and have the people there fix your ticket. Don't do it over the phone or online with United they screwed us up and ended up with flights for our last leg that took off before our first leg.

United is one airline which regardless of how many separate United tickets in existence, if one flight breaks down, the airline will take care of all the flights.

It was okay, the food was good, but after the landing there was not enough time for luggage and security to catch a connection. It was crowded on board.

When I went to check in at the United counter in Barcelona, Spain I had 2 different menat 2 different times in United uniforms (standing around with a couple other employees) ask me if I was traveling alone. The one man asked me 3 different ways if I was traveling alone. I am, 68 yeaers old and have all my faculties. I thought it was weird and it made me feel very uncomfortable. What difference does it make if I was traveling alone or with someone? What if I was a recent widow? That would have been horrible. They never gave me a reason why they needed to know who I was traveling with. I was hesitant to question them because I needed to be on that flight.

Crew was great. 2 1/2 hour delay was due to staff needing "rest" was avoidable and self inflicted as United not willing to hire enough crew to keep flight on time.. Ridiculous. The crew and the passengers both suffered due to this.

Fine not above and beyond as I had a connection that was delayed due to maintenance

The repeated flight delays—this time nearly three hours without any weather-related cause—are unacceptable. Yet, passengers are penalized heavily even for being a minute late. It is unreasonable that there is no compensation for such significant delays, nor even basic provisions like water during the wait or in flight. This imbalance in accountability is deeply frustrating and needs to be addressed.

They didn’t put my luggage on my transfer so I had to spend the night in Detroit. They said my luggage would be here in the morning and they’re still searching for it. It did not arrive apparently.

Great just wish they always had WiFi on every flight couldn’t even purchase it

They keep delaying and cancel at last moment and height was for you to get refund need to be in chat line for two hours. I complained to DOT. Never recommend this airline on Kayak please

We had to take a bus to the plane with a old woman and carry on bags, and at landing at the airport we have to wait one hour seating on the plane waiting for a gate. We came back from Australia Bussines class Quantas 16 hours traveling, then wait in Dallas 7 hours for connection...honestly waiting 1 hour more at the plane was the worst part.

Flight delayed twice (not Spirit fault) No food served* No entertainment * *in response to my choices in the rating. None was provided so couldn’t rate properly

The flight was a big joke very uncomfortable I had a horrible experience and I will never fly with them again everything about the flight was bogus and I’m not happy with it at all this experience makes me not want to fly ever again

Pricing, boarding time communication, over priced baggage and overall service is lacking, seating unconfortable

Horrendous and unprofessional staff and will never fly spirit again

When I arrived at the airport at 4:00 in the morning, I was notified that I "hadn't paid" for my ticket (I had paid and had a boarding pass). Then I was told that while I had paid, the ticket was $600 more than it actually was, and that I needed to pay that so I could board. None of this was true, of course, but it took 20 minutes, two crew members behind the desk, and one on the phone to clear up.

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

More inflight connection. And leg space is horrible. And the paying for baggage I'd ridiculous!!!

My flight was originally from SAT to MCO connecting from MCO to ORD. We got diverted to ATL and than Frontier staff there was sooo un helpful first they said they couldn’t give us any accommodation since our flight first got delayed that cancelled and now it’s 221am and I am still in ATL since they said they need to create a new flight my final destination is ORD and I have been delayed twice and cancelled. With no real help the frontier app didn’t work no email updates over all such a horrible experience

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!!

Remind customers of the need to have passport or new ID for boarding.

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

Information on your arrival and departure airports