£165 Cheap Flights from Washington (IAD) to Houston (IAH)

View £165 flight on Mon, 22 Jun 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 £165 for one-way flights and £200 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Tue, 12 May - Wed, 13 May
IAD
Washington
IAH
Houston
£200 Return, found 6 days ago
£200
Return
found 6 days ago
Select Delta flight, departing Tue, 12 May from Washington to Houston, returning Wed, 13 May, priced at £200 found 6 days ago
Delta
Wed, 13 May - Sat, 16 May
IAD
Washington
IAH
Houston
£214 Return, found 6 days ago
£214
Return
found 6 days ago
Select Delta flight, departing Wed, 13 May from Washington to Houston, returning Sat, 16 May, priced at £214 found 6 days ago
Delta
Mon, 11 May - Sat, 16 May
IAD
Washington
IAH
Houston
£227 Return, found 6 days ago
£227
Return
found 6 days ago
Select Delta flight, departing Mon, 11 May from Washington to Houston, returning Sat, 16 May, priced at £227 found 6 days ago
Delta
Fri, 15 May - Sat, 16 May
IAD
Washington
IAH
Houston
£274 Return, found 6 days ago
£274
Return
found 6 days ago
Select Delta flight, departing Fri, 15 May from Washington to Houston, returning Sat, 16 May, priced at £274 found 6 days ago
Delta
Mon, 11 May - Sun, 17 May
IAD
Washington
IAH
Houston
£312 Return, found 6 days ago
£312
Return
found 6 days ago
Select Delta flight, departing Mon, 11 May from Washington to Houston, returning Sun, 17 May, priced at £312 found 6 days ago
Delta
Sun, 10 May - Tue, 12 May
IAD
Washington
IAH
Houston
£314 Return, found 6 days ago
£314
Return
found 6 days ago
Select Delta flight, departing Sun, 10 May from Washington to Houston, returning Tue, 12 May, priced at £314 found 6 days ago
Delta
Fri, 19 Jun - Tue, 30 Jun
IAD
Washington
IAH
Houston
£320 Return, found 13 hours ago
£320
Return
found 13 hours ago
Select Delta flight, departing Fri, 19 Jun from Washington to Houston, returning Tue, 30 Jun, priced at £320 found 13 hours ago
American Airlines
Wed, 13 May - Fri, 15 May
IAD
Washington
IAH
Houston
£427 Return, found 1 day ago
£427
Return
found 1 day ago
Select American Airlines flight, departing Wed, 13 May from Washington to Houston, returning Fri, 15 May, priced at £427 found 1 day ago
United
Wed, 13 May - Fri, 15 May
IAD
Washington
IAH
Houston
£431 Return, found 1 day ago
£431
Return
found 1 day ago
Select United flight, departing Wed, 13 May from Washington to Houston, returning Fri, 15 May, priced at £431 found 1 day ago
Alaska Airlines
Mon, 24 Aug - Tue, 25 Aug
IAD
Washington
IAH
Houston
£481 Return, found 6 days ago
£481
Return
found 6 days ago
Select Alaska Airlines flight, departing Mon, 24 Aug from Washington to Houston, returning Tue, 25 Aug, priced at £481 found 6 days ago

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 centre is 24 minutes. Flights from £214
IAH
George Bush Intercontinental
Cheapest
Average driving time to city centre24 min
Flights from £214

Frequently asked questions

How much does a flight from Washington, DC (IAD-Washington Dulles Intl.) to Houston, TX (IAH-George Bush Intercontinental) cost?
One-way flights typically cost between £576 and £1,372 and return flights often range between £576 and £1,372. 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 the cheapest fares first, and use the Price Tracking tool to receive alerts when Anaa (AAA) to Toronto, ON (YYZ-Pearson Intl.) 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)?
September is typically the cheapest month to fly from Washington, DC (IAD-Washington Dulles Intl.) to Houston, TX (IAH-George Bush Intercontinental), with average return fares of approximately £457. This is about 25% lower than the average price throughout the year. September often sees lower prices as the summer travel rush ends and before the holiday season begins, leading to reduced demand. May and August are also good months to find deals on this route.
Which airlines fly direct from Washington, DC (IAD-Washington Dulles Intl.) to Houston, TX (IAH-George Bush Intercontinental)?
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 traveller to traveller. If you like to fly early, UA offers early morning flights. If price is the most important factor, UA typically offers the lowest fares. UA 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-Washington Dulles Intl.) to Houston, TX (IAH-George Bush Intercontinental)?
The best time to fly from Washington Dulles Intl. (IAD) to George Bush Intercontinental (IAH) is August. This month offers a great balance, as it's one of the cheapest times to fly with average prices around £457, and it's also a popular month for travel, meaning you'll have plenty of flight options to choose from. This information is based on booking data from the past year.
How many flights per day from Washington, DC (IAD-Washington Dulles Intl.) to Houston, TX (IAH-George Bush Intercontinental)?
When flying from Washington Dulles Intl. (IAD) to George Bush Intercontinental (IAH), you'll find approximately 7 nonstop flights per day. For even more choice, look at flights that include layovers, as there are around 86 connecting flights per day. Some common connection points include Seattle - Tacoma Intl. (SEA), Hartsfield-Jackson Atlanta Intl. (ATL), and Charlotte-Douglas Intl. (CLT).
What is the earliest flight from Washington, DC (IAD-Washington Dulles Intl.) to Houston, TX (IAH-George Bush Intercontinental)?
The earliest flight from Washington, DC (IAD-Washington Dulles Intl.) to Houston, TX (IAH-George Bush Intercontinental) typically departs at approximately 5:00 AM local time. This service is operated by American Airlines and is seasonal, active in February and March. An early departure like this can help you maximise your time at your destination. To compare early flights on Expedia, select 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 find the most flights from Washington Dulles Intl. (IAD) to George Bush Intercontinental (IAH) on a Friday, with around 51 flights available. This gives you plenty of options for your travel plans. Major airlines on this route include United Airlines, Delta Air Lines, and American Airlines. Fridays offer notably more flight options compared to other days of the week.
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. About 36% of passengers prefer this time window. Many major carriers, including United Airlines and Delta Air Lines, offer flights during this window. These early morning flights are often preferred by business travelers who want to arrive at their destination and start their day, or by leisure travelers looking to make the most of their first 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 1,190 miles. 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)?
Select the "Business class" and "First class" filters when looking for IAD to IAH flights on Expedia. This is the easiest way to compare prices, routes and flight times for your trip.
How do I earn miles on a Washington, DC (IAD-Washington Dulles Intl.) to Houston, TX (IAH-George Bush Intercontinental) flight with Expedia?
It's easy to earn miles on a Washington, DC (IAD-Washington Dulles Intl.) to Houston, TX (IAH-George Bush Intercontinental) 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.
What airports do you fly into for Houston from Washington Dulles Intl. (IAD)?
When traveling from Washington Dulles Intl. (IAD) to Houston, you can fly into William P. Hobby (HOU) and George Bush Intercontinental (IAH). Some flights may connect through major hubs like Seattle - Tacoma Intl. (SEA), San Diego Intl. (SAN), Denver Intl. (DEN) before reaching Houston. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Washington, DC (IAD-Washington Dulles Intl.) to Houston, TX (IAH-George Bush Intercontinental) at the last minute?
Typically, booking a last minute flight from Washington, DC (IAD-Washington Dulles Intl.) to Houston, TX (IAH-George Bush Intercontinental) 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-Washington Dulles Intl.) to Houston, TX (IAH-George Bush Intercontinental) flight and hotel package?
Securing a Washington, DC (IAD-Washington Dulles Intl.) to Houston, TX (IAH-George Bush Intercontinental) 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, Delta, United
Return price
£199
Distance
1903 km
Average flight time
4 hours 43 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 £200 and range up to £481.  

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 May, 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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