$76 Find Cheap Flights from Washington Dulles Airport to Houston

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 Houston departing on 5/25. 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

 
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
$145
Typical prices: $486-$309
Multiple Airlines
Mon 5/25Tue 6/2
IAD - IAH • 2 stops
Cheapest non-stop
$371
Typical prices: $511-$335
United Airlines
Tue 5/26Tue 6/2
IAD - IAH • Non-stop
Advice from real travelers
AI-powered summary based on content written by travel experts. AI can make mistakes.
Check an airport map at IAD for efficient navigation.
For rideshare pickups at IAH, use Terminals A or C.
Expert advice
Expert advice
Expert advice
Expert advice
Nonstop flights
You can fly direct with United Airlines. Average duration is 3h 23m
Direct flights
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Direct flights
Direct flights
+1
Top routes
Cheapest
Most popular
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Avoid delays
Most punctual • 87% on-time
Best time • Fewest delays
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When to book
in advance
Our data shows that travelers who book at least 4 weeks in advance save around 26% compared to booking last minute.
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Flight Deals

Cheap Flights from Dulles Intl to Houston (IAD-HOU)

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

Mon, May 25 - Tue, Jun 2
Multiple Airlines Logo
2:52 pm - 8:50 am
IAD
-
IAH
18h 58m
2 stops
Multiple Airlines Logo
8:02 pm - 10:12 am
IAH
-
IAD
13h 10m
1 stop
$145Multiple Airlines
Sun, May 24 - Wed, Jun 17
Frontier Logo
8:47 pm - 7:34 am
IAD
-
IAH
11h 47m
1 stop
Frontier Logo
5:45 am - 11:17 pm
IAH
-
IAD
16h 32m
1 stop
$147Frontier
Wed, May 20 - Wed, May 27
Frontier Logo
7:40 am - 2:58 pm
IAD
-
IAH
8h 18m
1 stop
Frontier Logo
5:45 am - 5:27 pm
IAH
-
IAD
10h 42m
1 stop
$150Frontier
Sun, May 24 - Thu, Jun 18
Frontier Logo
8:47 pm - 7:34 am
IAD
-
IAH
11h 47m
1 stop
Frontier Logo
6:30 am - 11:22 pm
IAH
-
IAD
15h 52m
1 stop
$151Frontier
Wed, May 27 - Wed, Jun 3
Frontier Logo
11:07 am - 10:50 pm
IAD
-
IAH
12h 43m
1 stop
Frontier Logo
8:39 am - 6:42 pm
IAH
-
IAD
9h 03m
1 stop
$152Frontier
Tue, May 19 - Mon, Jun 1
Frontier Logo
7:40 am - 2:58 pm
IAD
-
IAH
8h 18m
1 stop
Frontier Logo
9:17 pm - 4:21 pm
IAH
-
IAD
18h 04m
2 stops
$153Frontier
Thu, Jun 4 - Sat, Jun 6
Multiple Airlines Logo
11:07 am - 7:38 pm
IAD
-
IAH
9h 31m
1 stop
Multiple Airlines Logo
6:15 am - 4:21 pm
IAH
-
IAD
9h 06m
1 stop
$159Multiple Airlines
Mon, May 25 - Tue, Sep 1
Delta Logo
7:38 pm - 9:32 am
IAD
-
HOU
14h 54m
1 stop
Delta Logo
1:00 pm - 12:10 am
HOU
-
IAD
10h 10m
1 stop
$307Delta
Sun, May 24 - Wed, Jun 17
Delta Logo
5:30 pm - 9:32 am
IAD
-
HOU
17h 02m
1 stop
Delta Logo
6:00 am - 12:44 am
HOU
-
IAD
17h 44m
1 stop
$321Delta
Tue, May 26 - Sat, Jun 6
Delta Logo
3:08 pm - 10:26 pm
IAD
-
HOU
8h 18m
1 stop
Delta Logo
6:00 am - 3:29 pm
HOU
-
IAD
8h 29m
1 stop
$332Delta
Booking Insights

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

Get data-powered insights and trends into flights from Dulles Intl to Houston 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?

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 departing in May.

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

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

The cheapest return flight from Washington, D.C. Dulles Intl Airport to Houston costs $327 on the route between Washington, D.C. Dulles Intl Airport (IAD) and Houston George Bush Intcntl Airport (IAH). It is also the most popular route.

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

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

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

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

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, 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 is January, where tickets cost $73 (return) on average. On the other hand, the most expensive months are November and June, where the average cost of round-trip tickets is $147 and $145 respectively.

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

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, 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, you should book around 4 weeks before departure, which saves you about 26% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 20 weeks before departure.

Expert advice

Expert advice for your flight from Dulles Intl to Houston

 
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$76
Flight from Washington Dulles Airport to Houston George Bush Airport

When to book flights from Dulles Intl to Houston

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

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

    In the last 3 days, the lowest price for a flight from Washington, D.C. Dulles Intl Airport to Houston was $76 for a one-way ticket and $145 for a round-trip.

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

    Yes

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

    When flying out of Washington Dulles Airport you will be using Washington, D.C. Dulles Intl. You will be landing at one of these airports: Houston Hobby or Houston George Bush Intcntl.

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

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

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

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

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

    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.

  • 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?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Houston 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?

    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 with an airline and back to Washington Dulles Airport with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Washington Dulles Airport to Houston?

    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 from Washington Dulles Airport up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Prefer to fly direct from Washington Dulles Airport to Houston?

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

Direct departures

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

Direct returns

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

Reviews of the top 4 airlines serving from Dulles Intl to Houston

 
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 Houston? 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.
7.9
DeltaOverall score based on 8466 reviews
8.5Crew
7.8Entertainment
7.2Food
8.1Boarding
7.9Comfort
Airline reviews

The agent at check in and at the gate were less than thrilled to be at work. I'm not a fan of Kayak's placement on the plane. I got put in the middle seat and none of my preferences were used.

4.0 OkayBradley, Apr 2026
RDU - ATL
Read more Delta reviews

The agent at check in and at the gate were less than thrilled to be at work. I'm not a fan of Kayak's placement on the plane. I got put in the middle seat and none of my preferences were used.

In ATL they have two sets of departure screens. Follow what is on your airline's departure board - the ATL Airport Authority departure board had completely incorrect details about the gate assignment for my flight, which would have made me miss boarding.

Flight was delayed it was hot while sitting on the plane, one engine was working on the plane until they had to do some jimmy rigging down the runway in order for the other engine to charge up. It was ridiculous

The flight was very good and the staff was very friendly and helpful!

The only thing I would say is we tried to get on a standby earlier flight, but with our fair we couldn’t. That seems senseless to leave with open seats..

Very easy to use and convenient, you can perform any action within the same portal

In a world of delays, Delta was on time both ways! Boarding was fast and efficient. Staff was friendly. AND wifi worked.

WiFi didn’t work. Flight delayed 3 hours Crew members were illiterate Seat lean back did not work.

Flight was delayed, we could have been notified earlier and in a consistent manner. App was not refreshing for another passenger to get the latest flight status. We could have stayed and waited at the hotel instead of waiting at the airport had we known the flight was going to delayed for more than 5 hours. The toilet is too tight, and needs to be cleaned more frequently (every hour). The entertainment screen froze, the touch screen not responding to touch. We were upgraded to comfort, it is more comfortable than regular economy seats.

This wasn't my experience with Delta. It was just the Pegasus flight. Seats were very hard. Staff was kinda rough. Not very nice. Charged me for snacks. For a 4 hour flight I would've expected more.

Vegetarian selection could be better. Bread was too hard to chew.

Crew was friendly and competent. Food, wine, and entertainment were excellent except the raw tuna on the flight to Split. Recommend against serving that - at least as the only option. Many medical conditions do not allow people to eat raw fish.

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.

United didn’t even try to hold the flight for me. They knew I had a tight connection and when I arrived at the gate less than 10 mins after final boarding the flight had already gone. The gate agent wasn’t even notified that I was on my way. She was told I wasn’t at the airport

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 .

Good quick flight on a small but comfortable plane. I'm 6'3 and had plenty of space.

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.

That gate is like a ducking shelter at Newark No where to sit Outlets that don’t work Bathrooms that are dirty

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 Dulles Intl to Houston

Information on your arrival and departure airports