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£150 Cheap Flights from Washington (IAD) to Houston (IAH)

View £150 flight on Sat, 14 Nov 2026Opens in a new window

Popular airlines from Washington Dulles International Airport (IAD) to George Bush Intercontinental Airport (IAH)

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Cheap Flights from Washington (IAD) to Houston (IAH)

Prices were available within the past 7 days and start at £150 for one-way flights and £301 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Wed, 11 Nov - Tue, 17 Nov
IAD
Washington
IAH
Houston
£301 Return, found 2 hours ago
£301
Return
found 2 hours ago
Select Delta flight, departing Wed, 11 Nov from Washington to Houston, returning Tue, 17 Nov, priced at £301 found 2 hours ago
Delta
Wed, 11 Nov - Thu, 19 Nov
IAD
Washington
IAH
Houston
£308 Return, found 2 hours ago
£308
Return
found 2 hours ago
Select Delta flight, departing Wed, 11 Nov from Washington to Houston, returning Thu, 19 Nov, priced at £308 found 2 hours ago
Delta
Thu, 12 Nov - Thu, 19 Nov
IAD
Washington
IAH
Houston
£315 Return, found 2 hours ago
£315
Return
found 2 hours ago
Select Delta flight, departing Thu, 12 Nov from Washington to Houston, returning Thu, 19 Nov, priced at £315 found 2 hours ago
Delta
Fri, 23 Apr - Sat, 8 May
IAD
Washington
IAH
Houston
£340 Return, found 2 days ago
£340
Return
found 2 days ago
Select Delta flight, departing Fri, 23 Apr from Washington to Houston, returning Sat, 8 May, priced at £340 found 2 days ago
Delta
Sat, 14 Nov - Fri, 20 Nov
IAD
Washington
IAH
Houston
£341 Return, found 2 hours ago
£341
Return
found 2 hours ago
Select Delta flight, departing Sat, 14 Nov from Washington to Houston, returning Fri, 20 Nov, priced at £341 found 2 hours ago
American Airlines
Sat, 14 Nov - Fri, 20 Nov
IAD
Washington
IAH
Houston
£345 Return, found 2 hours ago
£345
Return
found 2 hours ago
Select American Airlines flight, departing Sat, 14 Nov from Washington to Houston, returning Fri, 20 Nov, priced at £345 found 2 hours ago
Delta
Fri, 13 Nov - Thu, 19 Nov
IAD
Washington
IAH
Houston
£348 Return, found 2 hours ago
£348
Return
found 2 hours ago
Select Delta flight, departing Fri, 13 Nov from Washington to Houston, returning Thu, 19 Nov, priced at £348 found 2 hours ago
United
Fri, 23 Apr - Sat, 8 May
IAD
Washington
IAH
Houston
£358 Return, found 2 days ago
£358
Return
found 2 days ago
Select United flight, departing Fri, 23 Apr from Washington to Houston, returning Sat, 8 May, priced at £358 found 2 days ago
Delta
Fri, 23 Apr - Sat, 8 May
IAD
Washington
IAH
Houston
£362 Return, found 2 days ago
£362
Return
found 2 days ago
Select Delta flight, departing Fri, 23 Apr from Washington to Houston, returning Sat, 8 May, priced at £362 found 2 days ago
Alaska Airlines
Sat, 14 Nov - Fri, 20 Nov
IAD
Washington
IAH
Houston
£671 Return, found 2 hours ago
£671
Return
found 2 hours ago
Select Alaska Airlines flight, departing Sat, 14 Nov from Washington to Houston, returning Fri, 20 Nov, priced at £671 found 2 hours ago

Frequently asked questions

How much does a flight from Washington, DC (IAD-Washington Dulles Intl.) to Houston, TX (IAH-George Bush Intercontinental) cost?
You can find one-way and return flights from MAN to GDZ with Expedia. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see our cheapest fares first, and use the Price Tracking tool to receive alerts when IAD to IAH ticket fares go up or down.
What is the cheapest month to fly from Washington, DC (IAD-Washington Dulles Intl.) to Houston, TX (IAH-George Bush Intercontinental)?
If you're looking for the cheapest time to fly from Washington, DC (IAD-Washington Dulles Intl.) to Houston, TX (IAH-George Bush Intercontinental), September is typically your best bet! You can expect average return fares around £246 during this month. September often sees lower prices because the summer travel rush has ended, and demand tends to decrease. Other budget-friendly months to consider for this route include May and August.
Which airlines fly direct from Washington, DC (IAD) to Houston, TX (IAH)?
Enter IAD to IAH and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
How do I find cheap flights from Washington, DC (IAD-Washington Dulles Intl.) to Houston, TX (IAH-George Bush Intercontinental)?
To find a cheap flight from Washington, DC (IAD-Washington Dulles Intl.) to Houston, TX (IAH-George Bush Intercontinental), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best airline to fly with from Washington, DC (IAD-Washington Dulles Intl.) to Houston, TX (IAH-George Bush Intercontinental)?
The best airline to fly with from Washington, DC (IAD-Washington Dulles Intl.) to Houston, TX (IAH-George Bush Intercontinental) will differ from traveler to traveler. If you like to fly early, United offers early morning flights. If price is the most important factor, United typically offers the lowest fares. United offers the most daily flights from Washington, DC (IAD-Washington Dulles Intl.) to Houston, TX (IAH-George Bush Intercontinental), which is great if flexibility is what you value most. The best carrier for this journey could also be the one you have a loyalty membership with, as flying with that airline or another airline within the same alliance could help you collect points or enjoy lounge access.
What is the best time to fly from Washington, DC (IAD) to Houston, TX (IAH)?
The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience.
How many flights per day from Washington, DC (IAD-Washington Dulles Intl.) to Houston, TX (IAH-George Bush Intercontinental)?
You'll find around 7 nonstop flights per day from Washington Dulles International (IAD) to George Bush Intercontinental (IAH). For even more choices, look at flights that include layovers, as there are approximately 70 connecting flights per day. Some common connection points include Seattle - Tacoma International (SEA), Hartsfield-Jackson Atlanta International (ATL), and Charlotte-Douglas International (CLT).
What is the earliest flight from Washington, DC (IAD) to Houston, TX (IAH)?
Sort flights by "Departure (earliest)" on Expedia to find the earliest flight from Washington, DC (IAD) to Houston, TX (IAH). To compare more early flights, use the "Early Morning" and "Morning" filters in your search.
What day of the week has the most flights from Washington, DC (IAD-Washington Dulles Intl.) to Houston, TX (IAH-George Bush Intercontinental)?
You'll typically find the most flights from Washington Dulles Intl. (IAD) to George Bush Intercontinental (IAH) on a Friday, with around 49 flights available. This gives you a good selection of options for your travel plans. Major airlines on this route include United, Delta, and American Airlines. Flight options are notably more on Fridays compared to other days of the week, offering you greater flexibility.
What are the most popular departure times for flights from Washington, DC (IAD-Washington Dulles Intl.) to Houston, TX (IAH-George Bush Intercontinental)?
The most popular departure times for flights from Washington Dulles Intl. (IAD) to George Bush Intercontinental (IAH) are in the early morning, from 6am to 9am. Many major carriers, including United, Delta and American Airlines, offer flights during this window. Many travellers prefer these times as they allow for an early start to their journey, often arriving at their destination with plenty of time left in the day.
How long does it take to fly from Washington, DC (IAD-Washington Dulles Intl.) to Houston, TX (IAH-George Bush Intercontinental)?
A nonstop flight from IAD to IAH typically takes around 3 hours 30 minutes, covering approximately 1,915 kilometers. Connecting flights on this route usually add 2 hours to your travel time. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Washington, DC (IAD-Washington Dulles Intl.) to Houston, TX (IAH-George Bush Intercontinental)?
You can fly business class or first class between IAD and IAH. You can fly business class with Frontier Airlines and Delta.First class cabins are available on Alaska Airlines, Delta, United, and American Airlines.
How do I earn miles on a Washington, DC (IAD) to Houston, TX (IAH) flight with Expedia?
It's easy to earn miles on a Washington, DC (IAD) to Houston, TX (IAH) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
Is it cheaper to buy a plane ticket from Washington, DC (IAD) to Houston, TX (IAH) at the last minute?
Typically, booking a last minute flight from Washington, DC (IAD) to Houston, TX (IAH) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Washington, DC (IAD) to Houston, TX (IAH) flight and hotel package?
Securing a Washington, DC (IAD) to Houston, TX (IAH) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Washington, DC (IAD-Washington Dulles Intl.) to Houston, TX (IAH-George Bush Intercontinental)?
If you booked your Washington, DC (IAD-Washington Dulles Intl.) to Houston, TX (IAH-George Bush Intercontinental) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Washington Dulles Intl.
Destination airport
George Bush Intercontinental
Airlines serving
Alaska Airlines, American Airlines, Delta, United
Return price
£300
Distance
1903 km
Average flight time
3 hours 50 mins

Book with confidence

Compare flights from Washington to Houston easily and book with confidence

For travelling on business or for pleasure, Expedia makes it easy to book your flights from Washington to Houston. Operating between them flights per day, 20 airlines cover the route. And fly direct, getting you to George Bush Intercontinental in just hours. If you have a preferred carrier, use our advanced search tool to find the right flight from Washington Dulles Intl. to George Bush Intercontinental.  

To make things even better, in the advanced search, you can also choose to fly economy, premium economy, business or first class, select your maximum number of stops, and pick your preferred departure and arrival time. You can also opt for refundable and direct flights. 

Grab a great deal on your flight from Washington Dulles Intl. (IAD) to George Bush Intercontinental (IAH)

The easiest way to view the best deals on flights from Washington to Houston today is to enter your travel dates and hit search. From here, you can sort your results by price to see the cheapest flights first. Right now, return flights from Washington Dulles Intl. to George Bush Intercontinental start at just £301 and range up to £671.  

To find an even better deal, try  

  • being flexible on your dates – midweek flights can be cheaper
  • looking for other airports near Washington and Houston
  • booking your flight during November, the cheapest month on this route
  • varying your flight times – early morning and late at night are sometimes cheaper 

Why you should book your Washington to Houston flight with Expedia!

We cater for all flight types, cabin classes and airlines. So whether you’re booking flights from Washington Dulles Intl. to George Bush Intercontinental for a budget break or a business trip with a bit of pleasure thrown in, we make it easy to secure the seat that’s right for you.  

Thanks to our supersized inventory that offers great choice all in one place, you know you’ll get a great deal with Expedia. Especially if you bundle your flight together with your hotel, you will unlock amazing savings. For added peace of mind, you can choose flexible bookings or filter to find refundable options, so you won’t pay a fee to change your flight.  

Compare flights from Washington to Houston easily and book with confidence

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