$116 Find Cheap Flights from Washington Dulles Airport to Houston - Compare and Save

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 8/23. 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.
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1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$223
Typical prices: $162-$329
Frontier
Sat 9/5Mon 9/7
IAD - IAH • 1 stop
Cheapest non-stop
$231
Typical prices: $260-$488
United Airlines
Sat 9/5Mon 9/7
IAD - IAH • Non-stop
Top airlines
Cheapest • from $223 (round-trip)
Best reviews • 7.8 score
Airline reviews
Airline reviews
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+1
Airline reviews
Airline reviews
+1
Nonstop flights
You can fly direct with United Airlines. Average duration is 3h 18m
Direct flights
Direct flights
+1
+1
Direct flights
Direct flights
+1
Top routes
Cheapest
Most popular
Insights
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Insights
Avoid delays
Most punctual • 87% on-time
Best time • Fewest delays
Insights
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When to book
in advance
Our data shows that travelers who book at least 4 weeks in advance save around 20% 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

Sat, Sep 5 - Mon, Sep 7
Frontier Logo
8:39 pm - 7:20 am
IAD
-
IAH
11h 41m
1 stop
Frontier Logo
7:55 pm - 8:04 am
IAH
-
IAD
11h 09m
1 stop
$223Frontier
Fri, Sep 4 - Sun, Sep 6
Frontier Logo
8:39 pm - 7:20 am
IAD
-
IAH
11h 41m
1 stop
Frontier Logo
6:00 am - 5:14 pm
IAH
-
IAD
10h 14m
1 stop
$224Frontier
Mon, Aug 17 - Mon, Aug 24
Multiple Airlines Logo
12:00 pm - 2:32 pm
IAD
-
IAH
27h 32m
2 stops
Multiple Airlines Logo
6:00 am - 5:14 pm
IAH
-
IAD
10h 14m
1 stop
$229Multiple Airlines
Sat, Sep 5 - Mon, Sep 7
United Airlines Logo
6:30 am - 8:44 am
IAD
-
IAH
3h 14mnonstop
United Airlines Logo
7:20 am - 11:28 am
IAH
-
IAD
3h 08mnonstop
$231United Airlines
Fri, Aug 21 - Fri, Sep 4
Multiple Airlines Logo
12:00 pm - 8:02 am
IAD
-
IAH
21h 02m
2 stops
Multiple Airlines Logo
11:32 am - 5:14 pm
IAH
-
IAD
28h 42m
1 stop
$234Multiple Airlines
Sat, Sep 12 - Tue, Sep 15
Delta Logo
6:07 pm - 10:39 pm
IAD
-
HOU
5h 32m
1 stop
Delta Logo
5:26 pm - 12:41 am
HOU
-
IAD
6h 15m
1 stop
$237Delta
Tue, Sep 1 - Tue, Sep 1
Delta Logo
8:28 am - 12:16 pm
IAD
-
HOU
4h 48m
1 stop
Delta Logo
5:20 pm - 12:34 am
HOU
-
IAD
6h 14m
1 stop
$237Delta
Sat, Aug 22 - Sat, Sep 5
United Airlines Logo
8:31 am - 10:52 am
IAD
-
IAH
3h 21mnonstop
United Airlines Logo
2:48 pm - 6:59 pm
IAH
-
IAD
3h 11mnonstop
$243United Airlines
Wed, Sep 23 - Wed, Sep 30
American Airlines Logo
6:14 am - 10:04 am
IAD
-
IAH
4h 50m
1 stop
American Airlines Logo
10:54 am - 5:31 pm
IAH
-
IAD
5h 37m
1 stop
$327American Airlines
Sat, Aug 29 - Sat, Sep 5
American Airlines Logo
6:09 am - 10:42 am
IAD
-
IAH
5h 33m
1 stop
American Airlines Logo
3:05 pm - 9:53 pm
IAH
-
IAD
5h 48m
1 stop
$327American Airlines
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 September.

Flight prices are below average for this route right now.

Flights to Houston from Washington, D.C. Dulles Intl Airport usually cost between $246 and $548 in September.
The lowest price found in the past 5 days was $223 on Frontier (Sep 5-Sep 7).

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 $318 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 Saturday 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 September, where tickets cost $253 (return) on average. On the other hand, the most expensive months are July and May, where the average cost of round-trip tickets is $536 and $491 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 20% 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

$116
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 5 days, the lowest price for a flight from Washington, D.C. Dulles Intl Airport to Houston was $116 for a one-way ticket and $223 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?

    oneworld, SkyTeam, and Star Alliance are the airline alliances operating flights between Washington Dulles Airport and Houston, with oneworld 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.
7.8
DeltaOverall score based on 8493 reviews
7.2Food
7.8Comfort
8.1Boarding
7.8Entertainment
8.5Crew
Airline reviews

Flight was delayed for about an hour but overall good experience

8.0 ExcellentNana, Jul 2026
DCA - ATL
Read more Delta reviews

Flight was delayed for about an hour but overall good experience

The gentleman at the gate I think his name is RIE was exceptional

Because I was moved to an exit row, the snacks in economy comfort, the selection of snacks was better.

This flight was no comparison to our prior flight. I'm thinking it all has to do with the age of the aircraft.

2 of the seats in row 31 the entertainment system was not working, and one seat the tray table did not go all the way down. Flight arrived early and departed on time which was great.

Waited at the usual crowded gate at DCA where one ends up standing up because there aren't enough seats.

Delayed take-off. Very small plane so very scary with lots of bumps during the flight. Would never fly Delta on short flights in small 80 seaters plane again! Felt relieved when landed.

Inexpensive, got an exit row aisle aeat with no middle passenger, bought a great breakfast sandwich, flight comfortable & arrived ahead of schedule.

Great!! I haven’t had a bad experience with them.

I wouldn't say I liked being forced to check my small roller bag at the gate; too many people had bags and were in a higher boarding group.

My flight was delayed so bad i missed u it so i just said never mind

Delayed 2 hours while stuck on the aircraft. If the luggage was properly loaded the first time we probably wouldn’t have been delayed at all

Onboard staff was courteous, helpful, responsive and friendly. The boarding process was disorganized, poorly communicated, and disheveled. Gate agents were yelling instead of using the PA system, didn’t communicate the timing delay of our flight, and created an atmosphere of chaos rather than order and communication. As far as I know, there was no reason for their. I would hate to see how it operated under extreme conditions. I’ve never seen United Airlines operations in such a state.

The flight did not have its customary snacks during the flight. Apparently they were never loaded on the plane.

Like: departed and arrived on time. Unlike: Food options for purchase allways bad, 1 of 2 of the crew members not very friendly at all. Seats and leg room aweful. At this point I am thinking on switching to AA.

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

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

The flight was delayed so we were dead tired, and after that the turbulence was horrible. I was very scared.

My interaction with the flight attendent Eve was horrible. I was seated in 3F and was blown away watching her repeatedly skip me as she took other customer orders for lunch...she took the customer next to me but skipped me, then took everyone's order around me (in front of and behind me) . After she had taken every customer's orders to include those behind me, she came to me and said we are out of everything except one last item. I was mortified, in that, I am a 1k flyer, had pre-ordered AND as an African American could only assume why she repeatedly skipped me...mortified. no words

I was forced to gate check my carry on luggage. Somehow it did not arrive at my destination. I still have yet to receive my bag r days after arrival.

As always, most AA flights that we fly are almost ALWAYS delayed and that too multiple times. Very frustrating

The small flights with Valet Luggage has a poor service

The plane was very creaky and lots of ringing. Plane was dirty and dingy. I couldn't hear the captain's announcements from the flight deck. Not sure if it was the captain or the audio equipment, but good thing there wasn't an emergency where we needed clear instructions. The overhead compartments were clearly full, but the flight crew allowed people to stand in the back with their carry on luggage. Then after everyone boarded, they had to go to the front to gate check their luggage because there was no room for their bags and then they returned to their seats...such a waste of time when clearly the overhead compartments were full when they originally boarded.

Human interaction. Thought there would be more service-even a smile would have been nice.

I booked an aisle seat and was given a middle. At 6'4" 230lbs, it is not ideal to fly in the middle row for myself and passengers.

I had two wonderful flights - very relaxing and got me there early!

Awful. We had an 8 hour mechanical delay- no vouchers and no kind/courtesy/professional representatives in the entire airport. Not only was it a terrible experience for both my 7 year old and myself, I still have not heard back from American about how they’re going to correct it- I’ve sent 2 or 3 emails about our experience- which was just awful. Not to mention according to national traveling laws, we should be reimbursed… but of course they’re not responding.

Help was available but timing was bad in my case

Overall it was good but not great. The aircraft was an old and seats didn’t recline in business class unless you kept playing around with it.

The flight was delayed and we were told the airplane is on its way to the gate from the hangar. We were told this for 2 hours and the flight was continually delayed in ~30 minute increments. Then we ended up having a new airplane. The issue wasn’t clearly communicated and it left everyone feeling confused about when we would actually be leaving. Whenever they communicated a new boarding time it felt arbitrary and random. The boarding process was a mess and disorganized, which made it last longer than necessary. Landing was rough. Seats were uncomfortable.

Terrible. Delayed my family flight for several hours affecting family plans

Flight was delayed and then my second leg was completely canceled. Had to get a refund

When I wanted to check in 3 hours prior to boarding time, the employees mentioned “a little over an hour delay” so I waited for an hour then I went to go look for food in the terminal and most people from that flight were in the same area looking for food. Finally I decided after food to check to see if it’s anytime closer and now it’s 2 mins until boarding closes?! What are you kidding me? I didn’t receive anything via sms about boarding now nor via email or on the intercom. I luckily made it through, barely, and then there’s no room for my carry on mind you I’m in the very first row so I had to place my purse in one further row back and my carry on sections down. Not sure who pays for better seats to get your stuff placed all over the plane but that was the worst experience I’ve ever had flying with anyone.

My flight was canceled I was promised a reginf still not received.

I missed a flight because of a delay. I had to buy a new ticket through Southwest.

Bag should not be so much money. This is how Frontier takes advantage of customers

The worst service , the agents from the counter are really bad . Poor customer service . They didnt help me to get in the flight . I was on line when they close the flight without telling and I couldn’t board the plane . I will like to get my money back ey back because it was their fault. Really bad management , bad manners, bad additud

I fly Frontier often and generally don't have any issues. For some reason, the Denver to Houston's George Bush Intercontinental (IAH) flight always needs to wait on the tarmac in Houston because a gate is not available after landing. I've been stuck for as little as 15 minutes and as much as a little over an hour. I know only fly the Frontier Denver to IAH route when there is not an available flight to Houston Hobby (HOU).

Terrible Y lost my connection to Mexico, nobody of your company help me And y pay a lot of money for my baggage Until now I continue in the Houston airport I vneed you return my money

Everything was good, 20/30 minutes late waiting on a crew member. It’s hard to keep employees. Or serious employees I know. I remember one flight from Houston of Frontiers was almost 18 hours late. And another 4 hours late very poor. But I would rather be late and safe than the on the news. Thank you.

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

Information on your arrival and departure airports