IAD

$96 Find Cheap Flights from Houston 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 Houston to Dulles Intl departing on 6/4. 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
$129
Typical prices: $618-$363
Frontier
Sat 5/23Wed 5/27
IAH - IAD • 1 stop
Cheapest non-stop
$371
Typical prices: $590-$362
United Airlines
Wed 5/27Tue 6/2
IAH - IAD • Non-stop
Advice from real travelers
AI-powered summary based on content written by travel experts. AI can make mistakes.
Check security wait times online for smooth IAH departure.
Use the Silver Line Metro from IAD to reach 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
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+1
Direct flights
Direct flights
+1
Top routes
Cheapest
Most popular
Insights
Insights
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Insights
When to book
in advance
Our data shows that travelers who book at least 2 weeks in advance save around 37% compared to booking last minute.
Insights
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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
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Flight Deals

Cheap Flights from Houston to Dulles Intl

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

Sat, May 23 - Wed, May 27
Frontier Logo
6:15 am - 11:09 pm
IAH
-
IAD
15h 54m
1 stop
Frontier Logo
6:22 pm - 3:03 pm
IAD
-
IAH
21h 41m
1 stop
$129Frontier
Wed, Jun 17 - Tue, Jun 23
Frontier Logo
11:12 am - 11:17 pm
IAH
-
IAD
11h 05m
1 stop
Frontier Logo
11:24 am - 10:07 am
IAD
-
IAH
23h 43m
1 stop
$148Frontier
Thu, Jun 4 - Tue, Jun 30
Frontier Logo
9:17 pm - 5:27 pm
IAH
-
IAD
19h 10m
2 stops
Frontier Logo
8:57 pm - 7:23 am
IAD
-
IAH
11h 26m
1 stop
$153Frontier
Sat, May 30 - Wed, Jun 3
Frontier Logo
10:52 am - 11:09 pm
IAH
-
IAD
11h 17m
1 stop
Frontier Logo
7:45 am - 10:50 pm
IAD
-
IAH
16h 05m
1 stop
$154Frontier
Sat, May 23 - Tue, Jun 2
Frontier Logo
8:57 pm - 10:12 am
IAH
-
IAD
12h 15m
1 stop
Frontier Logo
7:37 pm - 7:34 am
IAD
-
IAH
12h 57m
1 stop
$155Frontier
Sun, Jun 7 - Tue, Jun 9
Multiple Airlines Logo
7:14 pm - 3:37 pm
HOU
-
IAD
19h 23m
1 stop
Multiple Airlines Logo
8:55 am - 5:16 pm
IAD
-
HOU
9h 21m
1 stop
$327Multiple Airlines
Tue, May 26 - Wed, May 27
Delta Logo
5:02 pm - 12:51 am
HOU
-
IAD
6h 49m
1 stop
Delta Logo
10:11 am - 4:09 pm
IAD
-
HOU
6h 58m
1 stop
$391Delta
Tue, Jun 2 - Sun, Jun 7
Delta Logo
10:27 am - 9:24 pm
HOU
-
IAD
9h 57m
1 stop
Delta Logo
8:29 am - 12:11 pm
IAD
-
HOU
4h 42m
1 stop
$392Delta
Tue, Jun 2 - Thu, Jun 4
American Airlines Logo
4:15 pm - 10:47 pm
HOU
-
IAD
5h 32m
1 stop
American Airlines Logo
6:19 am - 12:20 pm
IAD
-
HOU
7h 01m
1 stop
$413American Airlines
Tue, Jun 2 - Sat, Jun 6
American Airlines Logo
9:30 am - 10:47 pm
HOU
-
IAD
12h 17m
1 stop
American Airlines Logo
6:15 am - 12:20 pm
IAD
-
HOU
7h 05m
1 stop
$422American Airlines
Booking Insights

KAYAK's insights & trends for Houston to Dulles Intl flights

Get data-powered insights and trends into flights from Houston 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 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 to Washington, D.C. Dulles Intl Airport departing in May.

What is the cheapest Houston to Washington, D.C. Dulles Intl Airport flight route?

Data is based on round-trip flight searches on KAYAK over the past month.

The cheapest return flight from Houston to Washington, D.C. Dulles Intl Airport costs $344 on the route between Houston George Bush Intcntl Airport (IAH) and Washington, D.C. Dulles Intl Airport (IAD). It is also the most popular route.

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

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

For Houston to Washington Dulles Airport, Friday is the cheapest day to fly on average and Sunday is the most expensive. Flying from Washington Dulles Airport back to Houston, the best deals are generally found on Friday, with Monday being the most expensive.

What is the cheapest month to fly from Houston 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 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 to Washington, D.C. Dulles Intl Airport is December, where tickets cost $63 (return) on average. On the other hand, the most expensive months are February and June, where the average cost of round-trip tickets is $180 and $149 respectively.

How far in advance should I book a flight from Houston 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 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 to Washington, D.C. Dulles Intl Airport, you should book around 2 weeks before departure, which saves you about 37% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 10 weeks before departure.

Expert advice

Expert advice for your flight from Houston 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

Cheapest flight$96
Flight from Houston George Bush Airport to Washington Dulles Airport

When to book flights from Houston to Dulles Intl

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

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

    In the last 3 days, the lowest price for a flight from Houston to Washington, D.C. Dulles Intl Airport was $96 for a one-way ticket and $148 for a round-trip.

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

    A passport is required to fly from Houston to Washington Dulles Airport.

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

    Houston has 2 major airports: Houston Hobby and Houston George Bush Intcntl. Washington, D.C. Dulles Intl is the only airport in Washington Dulles Airport. You’ll usually find the cheapest deals if you fly from Houston George Bush Airport.

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

    We unfortunately don’t have that data for this specific route.

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

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

  • How does KAYAK find such low prices on flights from Houston 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 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 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 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 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 with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Houston 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 up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

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

Direct departures

Houston 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

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 Houston 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 Houston 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 9684 reviews
7.3Comfort
6.6Food
8.1Crew
7.1Entertainment
7.7Boarding
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

Shut down without prior notice End up with spending lots of extra $$$

The company went out of business and now I'm stuck in Ft. Lauderdale. Would not recommend.

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

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

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

Everything you need to know for your flight from Houston to Dulles Intl

Information on your arrival and departure airports