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CA $167 Cheap Flights from Houston (IAH) to Washington (IAD)

View CA $167 flight on Tue, Sep 8, 2026Opens in a new window

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

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

Prices were available within the past 7 days and start at CA $167 for one-way flights and CA $370 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Fri, Oct 30 - Mon, Nov 2
IAH
Houston
IAD
Washington
CA $370 Roundtrip, found 1 day ago
CA $370
Roundtrip
found 1 day ago
Select Delta flight, departing Fri, Oct 30 from Houston to Washington, returning Mon, Nov 2, priced at CA $370 found 1 day ago
American Airlines
Fri, Oct 30 - Mon, Nov 2
IAH
Houston
IAD
Washington
CA $379 Roundtrip, found 1 day ago
CA $379
Roundtrip
found 1 day ago
Select American Airlines flight, departing Fri, Oct 30 from Houston to Washington, returning Mon, Nov 2, priced at CA $379 found 1 day ago
American Airlines
Fri, Oct 30 - Mon, Nov 2
IAH
Houston
IAD
Washington
CA $423 Roundtrip, found 1 day ago
CA $423
Roundtrip
found 1 day ago
Select American Airlines flight, departing Fri, Oct 30 from Houston to Washington, returning Mon, Nov 2, priced at CA $423 found 1 day ago
American Airlines
Fri, Oct 30 - Mon, Nov 2
IAH
Houston
IAD
Washington
CA $455 Roundtrip, found 1 day ago
CA $455
Roundtrip
found 1 day ago
Select American Airlines flight, departing Fri, Oct 30 from Houston to Washington, returning Mon, Nov 2, priced at CA $455 found 1 day ago
Delta
Sat, Aug 29 - Sat, Dec 5
IAH
Houston
IAD
Washington
CA $470 Roundtrip, found 6 days ago
CA $470
Roundtrip
found 6 days ago
Select Delta flight, departing Sat, Aug 29 from Houston to Washington, returning Sat, Dec 5, priced at CA $470 found 6 days ago
Delta
Thu, Oct 8 - Wed, Oct 14
IAH
Houston
IAD
Washington
CA $478 Roundtrip, found 16 hours ago
CA $478
Roundtrip
found 16 hours ago
Select Delta flight, departing Thu, Oct 8 from Houston to Washington, returning Wed, Oct 14, priced at CA $478 found 16 hours ago
Delta
Sat, Aug 29 - Sat, Dec 5
IAH
Houston
IAD
Washington
CA $492 Roundtrip, found 6 days ago
CA $492
Roundtrip
found 6 days ago
Select Delta flight, departing Sat, Aug 29 from Houston to Washington, returning Sat, Dec 5, priced at CA $492 found 6 days ago
Delta
Thu, Oct 8 - Wed, Oct 14
IAH
Houston
IAD
Washington
CA $494 Roundtrip, found 16 hours ago
CA $494
Roundtrip
found 16 hours ago
Select Delta flight, departing Thu, Oct 8 from Houston to Washington, returning Wed, Oct 14, priced at CA $494 found 16 hours ago
Delta
Fri, Oct 30 - Mon, Nov 2
IAH
Houston
IAD
Washington
CA $495 Roundtrip, found 1 day ago
CA $495
Roundtrip
found 1 day ago
Select Delta flight, departing Fri, Oct 30 from Houston to Washington, returning Mon, Nov 2, priced at CA $495 found 1 day ago
Alaska Airlines
Sat, Aug 29 - Sat, Dec 5
IAH
Houston
IAD
Washington
CA $1,168 Roundtrip, found 6 days ago
CA $1,168
Roundtrip
found 6 days ago
Select Alaska Airlines flight, departing Sat, Aug 29 from Houston to Washington, returning Sat, Dec 5, priced at CA $1,168 found 6 days ago

Alternative airports near Washington

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

Select flight to Washington Dulles Intl. IAD. Cheapest option available. Average driving time to city centre is 36 minutes. Flights from CA $785
IAD
Washington Dulles Intl.
Cheapest
Average driving time to city centre36 min
Flights from CA $785

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

January is typically the cheapest month to fly

From CA $139 - CA $418 per traveller.

Frequently asked questions

How much does a flight from Houston, TX (IAH-George Bush Intercontinental) to Washington, DC (IAD-Washington Dulles Intl.) cost?
You can find cheap one-way flights from CA $167 and cheap return flights from CA $370 IAH to IAD with Expedia. One-way flights typically cost between CA$449 and CA$1,184. 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 IAH to IAD ticket fares go up or down.
What is the cheapest month to fly from Houston, TX (IAH) to Washington, DC (IAD)?
The cheapest months to fly from Houston, TX (IAH) to Washington, DC (IAD) are typically during off-peak season when demand is low. Traveling in off-peak or shoulder months is usually a good way to secure cheap tickets, just remember to avoid flying during holidays if you are able to. Use the calendar view in your search to see which months have low fares on this route.
Which airlines fly direct from Houston, TX (IAH-George Bush Intercontinental) to Washington, DC (IAD-Washington Dulles Intl.)?
Only one airline offers direct flights from Houston, TX (IAH-George Bush Intercontinental) to Washington, DC (IAD-Washington Dulles Intl.). United operates 52 direct flights from IAH to IAD every week.
How do I find cheap flights from Houston, TX (IAH) to Washington, DC (IAD)?
To find a cheap flight from Houston, TX (IAH) to Washington, DC (IAD), 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 Houston, TX (IAH-George Bush Intercontinental) to Washington, DC (IAD-Washington Dulles Intl.)?
The best airline to fly with from Houston, TX (IAH-George Bush Intercontinental) to Washington, DC (IAD-Washington Dulles Intl.) 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 IAH to IAD, 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 Houston, TX (IAH) to Washington, DC (IAD)?
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 Houston, TX (IAH-George Bush Intercontinental) to Washington, DC (IAD-Washington Dulles Intl.)?
You'll find around 7 nonstop flights per day from Houston, TX (IAH-George Bush Intercontinental) to Washington, DC (IAD-Washington Dulles Intl.). For even more choices, look at flights that include layovers, as there are approximately 86 connecting flights per day. Some common connection points include Hartsfield-Jackson Atlanta Intl. (ATL), Dallas-Fort Worth Intl. (DFW), and Portland Intl. (PDX).
What is the earliest flight from Houston, TX (IAH-George Bush Intercontinental) to Washington, DC (IAD-Washington Dulles Intl.)?
The earliest flight from Houston, TX (IAH-George Bush Intercontinental) to Washington, DC (IAD-Washington Dulles Intl.) typically departs at around 5:00 AM local time, operated by American Airlines. This is a seasonal service active in January, February, March, April, November, and December. An early departure like this can help you make the most of 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 Houston, TX (IAH-George Bush Intercontinental) to Washington, DC (IAD-Washington Dulles Intl.)?
If you're flying from Houston, TX (IAH-George Bush Intercontinental) to Washington, DC (IAD-Washington Dulles Intl.), you'll generally find the most flights on a Friday, with around 49 flights available. This gives you plenty of options to choose from for your travel plans. Major airlines on this route include United, Delta, and American Airlines. Flight options are notably more abundant on Fridays compared to other days of the week, offering you greater flexibility.
What are the most popular departure times for flights from Houston, TX (IAH-George Bush Intercontinental) to Washington, DC (IAD-Washington Dulles Intl.)?
The most popular departure times for flights from George Bush Intercontinental (IAH) to Washington Dulles Intl. (IAD) are in the morning, from 6am to 9am. Many major carriers, including United, Delta and American Airlines, offer flights during this window. Many travellers prefer these early morning flights as they allow you to arrive at your destination with plenty of time to start your day.
How long does it take to fly from Houston, TX (IAH-George Bush Intercontinental) to Washington, DC (IAD-Washington Dulles Intl.)?
A direct flight from Houston, TX (IAH-George Bush Intercontinental) to Washington, DC (IAD-Washington Dulles Intl.) typically takes around 3 hours 18 minutes. This route covers a distance of approximately 1,915 kilometers. If you opt for a one-stop flight, your journey will usually be longer, taking about 8 hours. Flights with two or more stops generally take around 10 hours 18 minutes. Keep in mind that actual flight times can vary due to factors like wind patterns and air traffic, so it's always a good idea to allow for some extra time when planning your trip.
Can you fly business or first class from Houston, TX (IAH-George Bush Intercontinental) to Washington, DC (IAD-Washington Dulles Intl.)?
You can fly business class or first class between IAH and IAD. You can fly business class with Frontier Airlines and Delta.First class cabins are available on Alaska Airlines, United, Delta, and American Airlines.
How do I earn miles on a Houston, TX (IAH) to Washington, DC (IAD) flight with Expedia?
It's easy to earn miles on a Houston, TX (IAH) to Washington, DC (IAD) 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 Washington, DC (IAD) from Houston, TX (IAH)?
If you're planning to travel to Washington from George Bush Intercontinental (IAH), you can fly directly into Washington Dulles Intl. (IAD). Some flights may connect through major hubs like Portland Intl. (PDX), Seattle - Tacoma Intl. (SEA), or Dallas-Fort Worth Intl. (DFW) before reaching Washington. 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 Houston, TX (IAH) to Washington, DC (IAD) at the last minute?
Typically, booking a last minute flight from Houston, TX (IAH) to Washington, DC (IAD) 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 Houston, TX (IAH) to Washington, DC (IAD) flight and hotel package?
Securing a Houston, TX (IAH) to Washington, DC (IAD) 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 Houston, TX (IAH) to Washington, DC (IAD)?
If you booked your Houston, TX (IAH) to Washington, DC (IAD) 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
George Bush Intercontinental
Destination airport
Washington Dulles Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta
Roundtrip price
CA $369
Distance
1903 km
Average flight time
5 hours 13 mins

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Houston to Chantilly Flights

The easy way to book your flights from Houston to Washington 

With Expedia, it’s simple to find and book flights to Washington from Houston whether you’re traveling for business or pleasure. Enter your travel dates, hit search, and choose your flight from 20 airlines that cover this route. There are nonstop flights to Washington Dulles Intl., too.  

Choose your preferred carrier and cabin class with the advanced search tool and select your ideal departure time. Then, if you want, you can see just nonstop or refundable flights. And if you’re traveling last minute, just enter the date to check out flights from Houston to Washington today, tomorrow, or this week.  

 

Save dollars with cheap flights from George Bush Intercontinental, IAH to Washington Dulles Intl., IAD 

Sort your search results by price to find great deals on your flight from Houston to Washington—you get all your cheapest options first. Grab yourself a bargain now—the lowest price on flights to Washington from Houston currently is just CA $370 rising to CA $1,168.  

Here are more money-saving tips: 

  • Fly in October when flight prices are normally at their lowest 
  • Book about a month to 6 weeks before you travel for the best prices to Washington  
  • Avoid peak season and weekends when flights can cost more
  • Early morning and late-night flights are sometimes cheaper, so try varying your travel times 
  • One surefire way to save money on your flight is to book your flight and hotel together with Expedia. Sometimes, the savings are so large that the flight is basically free! 

 

Reasons to choose Expedia for your flight to Washington from Houston 

Whatever your destination, budget, or reason to travel, in just one quick search, you can choose from loads of flights, airlines, and cabin classes. The filters make it quick and easy to find your ideal flights, and if you choose one of the flexible options, you won’t be charged to change your flight. So book your flight to Washington with Expedia today.

Houston to Chantilly Flights

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