IAH - IAD

$88 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 5/15. 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
$136
Overall average: $419
Frontier
Tue 5/5Wed 5/13
IAH - IAD • 1 stop
Cheapest non-stop
$355
Typical prices: $349-$517
United Airlines
Tue 4/7Tue 4/14
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 04m
Direct flights
Direct flights
+1
+1
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 48% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 29% 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

Tue, May 5 - Wed, May 13
Frontier Logo
6:00 am - 4:21 pm
IAH
-
IAD
9h 21m
1 stop
Frontier Logo
11:12 am - 10:50 pm
IAD
-
IAH
12h 38m
1 stop
$136Frontier
Tue, Apr 28 - Tue, May 5
Frontier Logo
6:10 am - 12:36 am
IAH
-
IAD
17h 26m
1 stop
Frontier Logo
7:40 am - 10:50 pm
IAD
-
IAH
16h 10m
1 stop
$139Frontier
Tue, Apr 14 - Tue, Apr 21
Frontier Logo
6:15 am - 12:36 am
IAH
-
IAD
17h 21m
1 stop
Frontier Logo
8:20 am - 4:54 pm
IAD
-
IAH
9h 34m
1 stop
$143Frontier
Wed, May 6 - Sun, May 10
Frontier Logo
5:45 am - 11:09 pm
IAH
-
IAD
16h 24m
1 stop
Frontier Logo
7:40 am - 7:34 am
IAD
-
IAH
24h 54m
1 stop
$147Frontier
Sat, May 2 - Tue, May 5
Multiple Airlines Logo
6:00 pm - 12:36 am
IAH
-
IAD
5h 36m
1 stop
Multiple Airlines Logo
7:40 am - 2:58 pm
IAD
-
IAH
8h 18m
1 stop
$149Multiple Airlines
Thu, May 14 - Tue, May 19
Frontier Logo
6:00 am - 4:21 pm
IAH
-
IAD
9h 21m
1 stop
Frontier Logo
7:40 am - 10:50 pm
IAD
-
IAH
16h 10m
1 stop
$150Frontier
Mon, May 11 - Mon, May 18
Frontier Logo
8:50 pm - 10:12 am
IAH
-
IAD
12h 22m
1 stop
Frontier Logo
7:27 pm - 6:49 pm
IAD
-
IAH
24h 22m
1 stop
$152Frontier
Wed, May 13 - Tue, May 26
Frontier Logo
5:45 am - 5:27 pm
IAH
-
IAD
10h 42m
1 stop
Frontier Logo
7:37 pm - 7:34 am
IAD
-
IAH
12h 57m
1 stop
$153Frontier
Sun, May 17 - Tue, May 19
Frontier Logo
1:29 pm - 6:42 pm
IAH
-
IAD
28h 13m
1 stop
Frontier Logo
5:26 pm - 10:50 pm
IAD
-
IAH
6h 24m
1 stop
$155Frontier
Fri, May 8 - Sat, May 9
Frontier Logo
11:12 am - 11:09 pm
IAH
-
IAD
10h 57m
1 stop
Frontier Logo
11:07 am - 10:50 pm
IAD
-
IAH
12h 43m
1 stop
$158Frontier
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.

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 $278 (return) on average. On the other hand, the most expensive months are March and November, where the average cost of round-trip tickets is $438 and $438 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 48% 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$88
Best time to beat the crowds but there is an average 8% increase in price.
Most popular time to fly and prices are also 19% 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 $88 for a one-way ticket and $136 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, JetBlue, and Air France 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 Airbus A320-100/200 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 $428 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 $182 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 $268 or less one-way and $647 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 9427 reviews
7.3Comfort
7.7Boarding
6.6Food
8.1Crew
7.1Entertainment
Airline reviews

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.

6.0 GoodOlga, Mar 2026
FRA - IAD
Read more United Airlines reviews

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

Bad food, bad service, cold cabin with no additional blankets when asked for (they told me they don’t provide additional blankets). I’m a frequent traveler and this is one of the worst companies I traveled with (by the way I thought that I booked my ticket with Lufthansa but I didn’t see that the flights were handled by United).

Great other than a couple very drunk guys that for a while kept bumping my seat from behind. The staff did their best to control them. Even refused serving them alcohol and allowed the gal sitting next to them to move.

Good crew. Boarding delays. Almost two hours wait for the bags in DC.

Unfortunately weather delayed our flight waiting for our plane to arrive and due to a little snow time was needed to deice the plane so departure was very delayed and I missed the connecting flight

It was great. There were some issues prior to takeoff. The weather was poor so we had to go through deicing, and we were delayed a bit by the pilots' concern about one of the engines, but that's aviation. The pilots handled everything with aplomb, and kept us apprised

The seats were comfortable and we had leg room. Great entertainment.

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.

First off, I had a conversation with a flight attendant that was working this flight. I overheard her telling another flight attendant while we were in line for Chic-Fil-A that the flight was not going to land until 12:47 pm. I found this odd since the flight was to take off at 1:03. I commented to the flight attendant that was going to mess up the on-time take-off She said. if you fly alot you will notice that it's a good thing if the flight even arrives at all. I said that was a low bar. I think that flight attendants represent their airlines whether on board or in the airport ordering food. I was surprised to hear such negativity. However, I have noticed that Spirit flight attendants are usually in a sour mood.. Eventually the flight arrived and I boarded and the flight took off an hour late. There was no direction about the on-board wi-fi. Nor was there any info in the seat back pocket. I don't know if there was wi-fi or not, There were no complimentary snacks or drinks for my row 36 as there was turbulence and the captain asked the flight attendants to stop serving just as they were close to my row. When the turbulence stopped, they did have time to serve us but they did not. Upon arriving, the flight attendant asked anyone not having to catch a flight to Ft. Laudersle which was a tight connection to sit down and let those people pass. I complied but I could not help thinking that if Spirit would have took off on time that they would not have to inconvenience their passengers. All in all, I think Spirit is a mediocre airline at best. There are so many things they could do to improve. Yet, since I only fly Spirit infrequently preferring Southwest and Delta, I like to see if they are improving and sadly no, they are not. One good thing - nice modern seats and interiors.

My flight was cancelled I missed time at work and got a parking ticket

Went as planned. No wifi included and no screens. No free snacks. Didn't buy food so can't rate that. Unable to charge devices on plane. Staff were friendly and flight was fast, cheap and convenient.

I purchased extra legroom so I will be comfortable but the guy behind me is a big guy who keeps on moving and since he is big I can feel his movement at the back of my chair.

Spirit was on time. They maintained updates and information. The crew was friendly and professional. Because this is a budget friendly airline, they have dispensed with a lot of frills and part of that comes with a price, for example, the seats are not quite as comfortable as others. I am ok with a pay for beverage and snack service as I prefer my own anyway so this was not a concern. I thought overall, having a great flight crew and on time service was definitely worth losing some of the frills from other carriers.

Sadly there was a crew member very rude with my kid and with me.

They canceled the flight and didn't assist in getting a new flight on any airline. I had to spend 10 hrs in the airport after getting a ticket On Delta for twice as much. I've flown Spirit many times and this was my worst experience I've had.

Late taking off. ATC sent us circling around Chicago for almost an hour, after landing taxied for 40 minutes.

We had too many delays for the crew not the plane

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.

Flight was canceled. Most upsetting was message from Kayak, stating that the flight was canceled and click with Kayak for details regarding rebook, refund details. THERE'S NO INFORMATION PROVIDED BY KAYAK EXCEPT THAT FLIGHT IS CANCELED. AND NOW THIS SURVEY TO FIND OUT HOW WAS THE FLIGHT !!!!!!!

The flight never took off and we spent 7 hours at the airport

Gate not determined until I got to the airport - hard to plan the trip to the airport.

Our flight was canceled. I will never use Kayak nor Frontier for travel again. The entire experience was a headache.

Frontier.. nickel and dime add-ons. Flight late, on time, late again, last minute gate change, arrival gate required a shuttle to the terminal. They sure keep you guessing.. if you like a little chaos and airport anxiety, this is the airline for you!

This is my second time flying with Frontier. My current experience was very favorable. The staff from the gate to the plane was friendly, warm and professional. The food options lacked in my opinion. This area needs some attention in my opinion.

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.

Very well recently! Frontier is improving and less harrassing customer on luggages! Positive!

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

Information on your arrival and departure airports