IAD

$73 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 2/28. 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
$128
Overall average: $380
Frontier
Wed 2/18Sat 2/21
IAH - IAD • 1 stop
Cheapest non-stop
$283
Typical prices: $320-$537
United Airlines
Wed 2/25Wed 3/4
IAH - IAD • Non-stop
Our travelers' advice
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
Top routes
IAH
-
IAD
Cheapest
IAH
-
IAD
Most popular
Insights
Insights
Insights
Insights
When to book
3 weeks
in advance
Our data shows that travelers who book at least 3 weeks in advance save around 24% compared to booking last minute.
Insights
Insights
Insights
Insights
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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

Wed, Feb 18 - Sat, Feb 21
Frontier Logo
7:59 pm - 9:25 am
IAH
-
IAD
12h 26m
1 stop
Frontier Logo
10:29 am - 4:52 pm
IAD
-
IAH
7h 23m
1 stop
$128Frontier
Thu, Feb 19 - Sun, Feb 22
Frontier Logo
8:18 pm - 7:20 am
IAH
-
IAD
10h 02m
1 stop
Frontier Logo
9:07 pm - 7:00 am
IAD
-
IAH
10h 53m
1 stop
$131Frontier
Thu, Mar 5 - Tue, Mar 10
Frontier Logo
6:15 am - 4:43 pm
IAH
-
IAD
9h 28m
1 stop
Frontier Logo
7:00 am - 4:22 pm
IAD
-
IAH
10h 22m
1 stop
$137Frontier
Thu, Feb 19 - Sat, Feb 21
Frontier Logo
6:15 am - 4:43 pm
IAH
-
IAD
9h 28m
1 stop
Frontier Logo
10:29 am - 4:52 pm
IAD
-
IAH
7h 23m
1 stop
$138Frontier
Wed, Feb 18 - Sat, Feb 21
Delta Logo
1:06 pm - 6:37 pm
HOU
-
IAD
4h 31m
1 stop
Delta Logo
6:00 am - 10:01 am
IAD
-
HOU
5h 01m
1 stop
$303Delta
Wed, Feb 25 - Sat, Feb 28
Southwest Logo
6:15 am - 4:50 pm
HOU
-
IAD
9h 35m
1 stop
Southwest Logo
5:05 am - 3:50 pm
IAD
-
HOU
11h 45m
2 stops
$308Southwest
Wed, Feb 18 - Sat, Feb 21
Southwest Logo
6:30 am - 3:50 pm
HOU
-
IAD
8h 20m
2 stops
Southwest Logo
5:05 am - 3:50 pm
IAD
-
HOU
11h 45m
2 stops
$313Southwest
Wed, Mar 4 - Sat, Mar 7
Delta Logo
5:25 am - 2:45 pm
HOU
-
IAD
8h 20m
1 stop
Delta Logo
12:35 pm - 10:28 pm
IAD
-
HOU
10h 53m
1 stop
$320Delta
Sat, Feb 21 - Mon, Feb 23
American Airlines Logo
4:21 pm - 10:53 pm
HOU
-
IAD
5h 32m
1 stop
American Airlines Logo
6:00 am - 11:48 am
IAD
-
HOU
6h 48m
1 stop
$355American Airlines
Thu, Feb 19 - Sat, Feb 21
American Airlines Logo
6:00 am - 4:16 pm
HOU
-
IAD
9h 16m
2 stops
American Airlines Logo
9:18 am - 3:51 pm
IAD
-
HOU
7h 33m
2 stops
$364American 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.

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 $285 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 October, where tickets cost $257 (return) on average. On the other hand, the most expensive months are December and February, where the average cost of round-trip tickets is $401 and $380 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 3 weeks before departure, which saves you about 24% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 19 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$73
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 $75 for a one-way ticket and $128 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?

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

  • 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 4 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 9215 reviews
6.6Food
7.7Boarding
7.1Entertainment
7.3Comfort
8.1Crew
Airline reviews

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

6.0 GoodMichael, Jan 2026
GVA - IAD
Read more United Airlines reviews

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.

The flight crew where really good. Better then the crew from BNE to SFO

Safe made to destination. Late to start at GVA for icy reasons but we fought our next fly.

Miserable. They moved my seat, but canceled the next leg of my flight. I resolved the issue at my transfer, but that resulted in lost luggage that has taken days off my schedule with no resolution. Worse, they fail to interface effectively with Lufthansa, forcing me to bounce between two equally useless help desks. The apps are unable to handle the situation, the bag dropped off the tracker, and while the call centers are polite, they do not provide written information to assist with cross-airline communication.

l really enjoy very much the flight was very pleasant

The flight was delayed for 1:30 hours for maintenance issues. They should give more information about connecting flights. For a Business Cabin the Crew was mediocre.

The food is terrible. The same pasta or chicken with bad taste and presentation

Concern Regarding Significant Gate Delay and Jet Bridge Issue Dear Customer Relations Team, I am writing to express my disappointment with the experience I had on my recent flight AA 2414 on Sunday January 18, 2026. What should have been a routine departure turned into a frustrating and avoidable delay due to an issue with the jet bridge at the gate. As a result, the flight was delayed by approximately 90 minutes while multiple gate changes were attempted. The lack of clear communication during this period made the situation even more challenging. Passengers were left uncertain about the cause of the delay, the expected timeline, and the next steps. This not only disrupted travel plans but also created unnecessary stress for everyone on board. I understand that operational issues can arise, but a malfunctioning jet bridge and the resulting extended delay suggest an area where procedures or equipment maintenance may need attention. I hope you will review this incident to prevent similar disruptions in the future. I would appreciate acknowledgment of this concern and consideration of appropriate compensation for the inconvenience and lost time caused by this delay. Thank you for taking the time to review my experience. I look forward to hearing from you. Sincerely, Dion Dillard

I got sick nothing contagious but distressing enough and the care I received on the flight was astounding.

Horrible. Both legs of my flight were delayed more than 6 hours. No compensation, no screens on the plane, and the plane was not clean.

There's nothing I liked about it. For first off I scheduled this trip two weeks in advance then they delayed my flight which messed up my whole trip. So I scheduled it for the following weekend thinking there won't be a delay and guess what as soon as I got to the airport we said in the airplane on the tarmac for an hour and a half. Not only was it delayed I missed my connecting flight meaning I had to stay the night at Dallas-Fort Worth airport sleeping on the floor. I will tell you this I will never fly American airlines ever again I have had nothing but horrible experience with them and I just throw money at them

After we'd boarded , they canceled the flight. The crew didn't even know , we just all received text messages. Then after they deplaned us , AA was just like "too bad, go F your self, we sure ain't gonna help you"

Initial flight was cancelled at the time of arrival to the airport, flight alternative requires switching from direct to flight with a layover, and the plane felt like it would split apart, it was so rattle-y.

Weather delay for 2.5 hours followed by half hour crew delay, did not have ginger ale, uncomfortable seats

It was nobody’s fault - but the plane came 4-hrs late and we were updated randomly in 20-30 mins increments which left us hostage to sit and wait expectantly. It was very long and got very late. Our plane didn’t land until nearly 1 am! Also the toilet wasn’t working. The hosts were nice enough but were clearly “about to pass out” as one told me. Lastly, there was no snack or even time for it. Just a bad experience overall.

The boarding crew was incredibly helpful getting me on an earlier flight

They changed my seat from one that I had paid for as an upgrade to a regular seat at the last minute.

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

Awful!!! Spirit cancelled my flight just 4 hours before departure- with no alternative flights available. I ended up missing a huge family gathering because I wasn’t able to get out. Such An awful experience. And on top of that, all the buckle and dime-ing for bags. I will never book with Spirit EVER

I'd have like to check my bag and not toss my hair products.sears are very uncomfortable. And that even water isn't free really sucks. The ticket was almost $400

Terrible. They cancelled the flight at the last minute after I had checked in at the airport and then told me they could only put me on a flight after 7 days. Pathetic.

Spirit cancelled the flight very late last night, I was on the way to the airport when I found out

Flight was canceled and instead of rescheduling at the gate we had to go out to the ticket counter. Unruly kids kicking the back of my rows chair with staff to inattentive to say something.

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

Good for a budget airline! It was easy to get on, staff was really nice. Can’t say anything about the food or entertainment because it wasn’t available, which is fine.

I am writing to express my disappointment with my recent Frontier Airlines flight. I was charged $99 at the gate because my bag was said to be too large, yet once onboard there was no available overhead bin space, and I was required to place the bag under the seat in front of me anyway. This made the charge feel unnecessary and unfair. Additionally, before the flight even took off, I was asked to move from the seat I paid for into a middle seat so another passenger and her cat could have my seat to themselves. I was not offered compensation or an explanation for being moved from a paid seat. Between the unexpected bag fee and being forced to give up my seat, this experience fell well below acceptable customer service standards. I would appreciate a review of this situation and appropriate compensation.

It was costly and difficult to check in. $85 to take a small suitcase with me, carry on or checked and $75 on the return trip, Plus $25 if I didn't check my self in check in $25, because I couldn't do it on the kiosk. Small very uncomfortable seats, waited on the runway for near an hour each way. It was my worst flight to date.

It was ok. It was expensive to check 2 bags ($75.00 per bag), and then it took a long time to wait for shuttle to take us from one terminal to the terminal where the plane was taking off at LAX. And all of this for a flight where we had to pay for any food or drink that was not water.

It didn’t happen. I booked it and then was told it wasn’t available and then forced to pay far higher prices for a worse option

A 630departure flight Delayed 6hours! They changed my gate, I moved to the new gate. Had our flight on the screen for 12noon departure. I go get above to eat, check screen again and the flight was gone, no notice no announcement, nothing!! They sent my bag on the flight I wasn’t on, got it back to me 3days later. Thank goodness they did refund my money but I will NEVER fly them again.

Due to weather, my flight was delayed, further delayed, then canceled. I eventually got through to a support person who helped me find a different route out of MSP, but to get to DIA, they didn't want to, but eventually did help with the connection ticket purchase. But even this replacement flight was delayed time and time again, and I would have missed my connecting flights and I didn't want to get stuck in a layover city, so after 12 hours at the airport with two young boys who were very tired, we just cancelled our plans and spent the week at home, instead of Nana's.

Plane and crew on board were fine. Everything else was terrible.

The third party booking with cheapflightsfares was awful. Kayak should NOT partner with them. They sold me a bundle including seat selection and carry-on, but did not book the carry-ons with Frontier, so I’m out of pocket for $414 more while I await resolution.

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

Information on your arrival and departure airports