$123 Cheap Flights from Washington (IAD) to Houston (HOU)

View $123 flight on Sun, Jan 11, 2026Opens in a new window

Popular airlines from Washington Dulles Intl. Airport (IAD) to Houston William Hobby Airport (HOU)

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Cheap Flights from Washington to Houston (IAD-HOU)

Prices were available within the past 7 days and start at $123 for one-way flights and $218 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Fri, Dec 5 - Tue, Dec 9
IAD
Washington
HOU
Houston
$218 Roundtrip, found 6 days ago
$218
Roundtrip
found 6 days ago
Select Delta flight, departing Fri, Dec 5 from Washington to Houston, returning Tue, Dec 9, priced at $218 found 6 days ago
American Airlines
Sun, Jan 11 - Wed, Jan 14
IAD
Washington
HOU
Houston
$230 Roundtrip, found 6 days ago
$230
Roundtrip
found 6 days ago
Select American Airlines flight, departing Sun, Jan 11 from Washington to Houston, returning Wed, Jan 14, priced at $230 found 6 days ago
Southwest Airlines
Thu, Jan 29 - Tue, Feb 3
IAD
Washington
HOU
Houston
$367 Roundtrip, just found
$367
Roundtrip
just found
Select Southwest Airlines flight, departing Thu, Jan 29 from Washington to Houston, returning Tue, Feb 3, priced at $367 just found

Find the cheapest month to fly from Washington (IAD) to Houston (HOU)

April is typically the cheapest month to fly

From $140 - $599 per traveler.

Alternative airports near Houston

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to George Bush Intercontinental IAH. Cheapest option available. Average driving time to city center is 24 minutes. Flights from $120
IAH
George Bush Intercontinental
Cheapest
Average driving time to city center24 min
Flights from $120
Flights from Washington (IAD) to Houston (HOU)
Origin airport
Washington Dulles Intl.
Destination airport
William P. Hobby
Airlines serving
American Airlines, Delta, Southwest Airlines
Roundtrip price
$217
Distance
1199 mi

Washington to Houston Flights

The cheapest times to fly from Washington to Houston

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Washington to Houston are during the month of December. You can find some of the cheapest flights from Washington to Houston with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Washington to Houston

Sunday is one of the best days to book for cheap flights from Washington to Houston: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Washington to Houston

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Washington to Houston in 2025. You can also book with separate airlines for your outbound and return journeys, from $123 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Washington to Houston flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Washington to Houston airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Washington Dulles Intl. Airport (IAD) to William P. Hobby Airport (HOU) cost?
Lock in a cheap one-way flight from $123 or cheap return flight from $218 from Washington Dulles Intl. Airport (IAD) to William P. Hobby Airport (HOU) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from Washington Dulles Intl. Airport (IAD) to William P. Hobby Airport (HOU)?
The cheapest month to fly from IAD to HOU is December, when demand is low. Off-peak months are typically when you'll find cheap fares for travel between these airports.
Which airlines fly direct from Washington Dulles Intl. Airport (IAD) to William P. Hobby Airport (HOU)?
You can't fly direct from Washington, DC (IAD-Washington Dulles Intl.) to William P. Hobby Airport (HOU). However, you can seamlessly travel to Houston without any layovers by taking off from Ronald Reagan Washington National Airport (DCA).
What is the cheapest airline that flies from Washington Dulles Intl. Airport (IAD) to William P. Hobby Airport (HOU)?
Expedia's filter tool lets you easily compare different airlines, departure times and fares all in one place. Customize the search to your preferences, then sort by "Price (lowest to highest)" to find the carrier with the cheapest IAD to HOU flight.
How many flights per day from Washington Dulles Intl. Airport (IAD) to William P. Hobby Airport (HOU)?
Direct flights from Washington Dulles Intl. Airport (IAD) to William P. Hobby Airport (HOU) aren't available daily, so you'll need to take a flight with a layover. Explore your options with our filter tool. Enter your travel dates and choose either "1 Stop" or "2+ Stops."
What day of the week has the most flights from IAD to HOU?
Friday is usually the busiest day for flights, while Tuesday tends to be the quietest.* Just remember that flight schedules can change based on a number of factors, including the time of year and carrier.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Washington Dulles Intl. Airport (IAD) to William P. Hobby Airport (HOU)?
To avoid potential delays on the Washington Dulles Intl. Airport (IAD) to William P. Hobby Airport (HOU) route, travel before 3 PM. Flights after this time are 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports do you fly into for Houston from Washington Dulles Intl. Airport (IAD)?
If you've booked a direct flight from Washington Dulles Intl. Airport (IAD) to Houston, George Bush Intercontinental Airport (IAH) is the only airport you can touch down at.
Is it cheaper to buy a plane ticket from Washington Dulles Intl. Airport (IAD) to William P. Hobby Airport (HOU) last-minute?
Booking your plane ticket from IAD to HOU right before your journey is usually more expensive. However, if there's some wiggle room with your departure dates and times, you could score a cheap last-minute fare.
Is it cheaper to book an IAD to HOU flight and hotel package?
You'll generally save money by booking an IAD to HOU flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it's easy to manage everything in one convenient place. After selecting your ideal accommodations and flights, you can add extras such as activities, car rentals and tours.
Can I cancel or change the date of my flight from Washington Dulles Intl. Airport (IAD) to William P. Hobby Airport (HOU)?
It's usually possible to reschedule or cancel your IAD to HOU flight. However, if it's been more than 24 hours since booking, additional charges may apply. Refer to your airline's policies in your itinerary to see what changes are allowed and if any costs are involved. You'll also find further details on our Customer Service portal.

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*Available to One Key members.