$104 Cheap Flights from Houston (IAH) to Washington (IAD)

View $104 flight on Tue, Aug 12, 2025Opens in a new window

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

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Cheap Flights from Houston to Washington (IAH-IAD)

Prices were available within the past 7 days and start at $104 for one-way flights and $208 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Sat, Aug 2 - Tue, Aug 5
IAH
Houston
IAD
Washington
$208 Roundtrip, just found
$208
Roundtrip
just found
Select Frontier Airlines flight, departing Sat, Aug 2 from Houston to Washington, returning Tue, Aug 5, priced at $208 just found
Frontier Airlines
Sun, Sep 7 - Tue, Sep 9
IAH
Houston
IAD
Washington
$218 Roundtrip, just found
$218
Roundtrip
just found
Select Frontier Airlines flight, departing Sun, Sep 7 from Houston to Washington, returning Tue, Sep 9, priced at $218 just found
Frontier Airlines
Thu, Aug 14 - Sun, Aug 17
IAH
Houston
IAD
Washington
$228 Roundtrip, just found
$228
Roundtrip
just found
Select Frontier Airlines flight, departing Thu, Aug 14 from Houston to Washington, returning Sun, Aug 17, priced at $228 just found
Delta
Sat, Sep 20 - Sat, Oct 4
IAH
Houston
IAD
Washington
$229 Roundtrip, found 5 days ago
$229
Roundtrip
found 5 days ago
Select Delta flight, departing Sat, Sep 20 from Houston to Washington, returning Sat, Oct 4, priced at $229 found 5 days ago
Frontier Airlines
Sat, Oct 25 - Tue, Oct 28
IAH
Houston
IAD
Washington
$243 Roundtrip, found 1 hour ago
$243
Roundtrip
found 1 hour ago
Select Frontier Airlines flight, departing Sat, Oct 25 from Houston to Washington, returning Tue, Oct 28, priced at $243 found 1 hour ago
Frontier Airlines
Sat, Sep 27 - Mon, Sep 29
IAH
Houston
IAD
Washington
$244 Roundtrip, found 3 hours ago
$244
Roundtrip
found 3 hours ago
Select Frontier Airlines flight, departing Sat, Sep 27 from Houston to Washington, returning Mon, Sep 29, priced at $244 found 3 hours ago
Frontier Airlines
Mon, Aug 4 - Wed, Aug 6
IAH
Houston
IAD
Washington
$248 Roundtrip, just found
$248
Roundtrip
just found
Select Frontier Airlines flight, departing Mon, Aug 4 from Houston to Washington, returning Wed, Aug 6, priced at $248 just found
Frontier Airlines
Wed, Sep 24 - Fri, Sep 26
IAH
Houston
IAD
Washington
$250 Roundtrip, found 3 hours ago
$250
Roundtrip
found 3 hours ago
Select Frontier Airlines flight, departing Wed, Sep 24 from Houston to Washington, returning Fri, Sep 26, priced at $250 found 3 hours ago
United
Thu, Oct 23 - Sat, Oct 25
IAH
Houston
IAD
Washington
$256 Roundtrip, found 3 hours ago
$256
Roundtrip
found 3 hours ago
Select United flight, departing Thu, Oct 23 from Houston to Washington, returning Sat, Oct 25, priced at $256 found 3 hours ago
Alaska Airlines
Mon, Aug 4 - Tue, Aug 19
IAH
Houston
IAD
Washington
$638 Roundtrip, found 6 days ago
$638
Roundtrip
found 6 days ago
Select Alaska Airlines flight, departing Mon, Aug 4 from Houston to Washington, returning Tue, Aug 19, priced at $638 found 6 days ago

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

September is typically the cheapest month to fly

From $103 - $253 per traveler.

Graph displaying average flight prices per month

Alternative airports near Washington

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

Select flight to Ronald Reagan Washington National DCA. Closest option available. Average driving time to city center is 8 minutes. Flights from $288
DCA
Ronald Reagan Washington National
Closest
Average driving time to city center8 min
Flights from $288
Flights from Houston (IAH) to Washington (IAD)
Origin airport
George Bush Intercontinental
Destination airport
Washington Dulles Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, United
Roundtrip price
$202
Distance
1189 mi
Average flight time
5 hours 14 mins

Houston to Washington Flights

The cheapest times to fly from Houston to Washington

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 Houston to Washington are during the month of August. You can find some of the cheapest flights from Houston to Washington with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Houston to Washington

Sunday is one of the best days to book for cheap flights from Houston to Washington: 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 Houston to Washington

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 Houston to Washington in 2025. You can also book with separate airlines for your outbound and return journeys, from $104 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 Houston to Washington 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 Houston to Washington 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 George Bush Intercontinental Airport (IAH) to Washington Dulles Intl. Airport (IAD) cost?
Score cheap return fares from George Bush Intercontinental Airport (IAH) to Washington Dulles Intl. Airport (IAD) starting from $145. Book a seat and be on your way. This information is based on the cheapest price found on Expedia for this return journey departing within the next three months. This airfare is for a United and Spirit Airlines flight leaving IAH on August 14 2025 and touching down at IAD. The price was last updated on July 23 2025 and has not changed since.
What is the cheapest month to fly from IAH to IAD?
The cheapest flights from IAH to IAD are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
Which airlines fly direct from George Bush Intercontinental Airport (IAH) to Washington Dulles Intl. Airport (IAD)?
Fly nonstop from George Bush Intercontinental Airport (IAH) to Washington Dulles Intl. Airport (IAD) on a United Airlines flight.
What is the cheapest airline that flies from IAH to IAD?
At the moment, the cheapest carrier operating one-way flights from IAH to IAD is United. You can take off on this route from $105. This fare is based on the lowest price found on Expedia departing within the next three months. The flight takes off from IAH on October 18 2025. Prices were last updated on July 23 2025 and have not changed since.
How many flights per day from George Bush Intercontinental Airport (IAH) to Washington Dulles Intl. Airport (IAD)?
With an average of 4 direct flights that operate from George Bush Intercontinental Airport (IAH) to Washington Dulles Intl. Airport (IAD) daily, you'll be up in the air in no time.
What are the most popular departure times for flights from George Bush Intercontinental Airport (IAH) to Washington Dulles Intl. Airport (IAD)?
Flights between IAH and IAD are their busiest at 7 AM. For a more relaxed atmosphere and possibly cheaper prices, choose a departure that's outside typical rush times.
What day of the week has the most flights from IAH to IAD?
Sunday offers the most flights from George Bush Intercontinental Airport (IAH) to Washington Dulles Intl. Airport (IAD). Consider jetting off on this day and you'll have a greater chance of finding a departure that fits your plans.
What is the earliest flight from George Bush Intercontinental Airport (IAH) to Washington Dulles Intl. Airport (IAD)?
George Bush Intercontinental Airport (IAH)'s earliest flight to Washington Dulles Intl. Airport (IAD) takes off at approximately 7:45AM UTC-6. With a total travel time of 3h 4m, you'll touch down at around 11:49AM UTC-5.
How long does it take to fly from George Bush Intercontinental Airport (IAH) to Washington Dulles Intl. Airport (IAD)?
It takes around 3 hours and 2 minutes to travel the 1,200 mi from IAH to IAD.
What airline has the least delays from IAH to IAD?
United Airlines has the best track record for on-time direct flights from George Bush Intercontinental Airport (IAH) to Washington Dulles Intl. Airport (IAD), with an on-time rating of 84%. Use the Expedia App to look up your flight schedule before you jet off and get real-time updates about any changes.
What is the best time to fly from George Bush Intercontinental Airport (IAH) to Washington Dulles Intl. Airport (IAD)?
To avoid potential delays on the George Bush Intercontinental Airport (IAH) to Washington Dulles Intl. Airport (IAD) route, travel before 3 PM. Departures after this hour have a 22% higher chance of cancellation.**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 Washington from George Bush Intercontinental Airport (IAH)?
Book a direct flight from George Bush Intercontinental Airport (IAH) to Washington and you'll land at one of these hubs:

  • Ronald Reagan Washington National Airport (DCA)
  • Washington Dulles Intl. Airport (IAD)
  • Baltimore Washington Intl. Thurgood Marshall Airport (BWI)

Is it cheaper to buy a plane ticket from George Bush Intercontinental Airport (IAH) to Washington Dulles Intl. Airport (IAD) last-minute?
Last-minute bookings from IAH to IAD are generally more expensive. For the lowest rates, start looking for flights early. That said, if your travel plans are flexible, you may score a cheap fare right before you leave.
Is it cheaper to book an IAH to IAD flight and hotel package?
Compared with arranging hotels and flights separately, booking an IAH to IAD flight and hotel package with Expedia could lead to significant savings. Better yet, having everything in one place takes the hassle out of travel planning. Simply secure your flights and choose from our wide range of hotels, then customize your trip with other add-ons like tours, activities and car rentals.
Can I cancel or change the date of my flight from George Bush Intercontinental Airport (IAH) to Washington Dulles Intl. Airport (IAD)?
Typically, you can modify or cancel your IAH to IAD flight. However, there may be additional charges, especially if your booking was made more than 24 hours ago. Double-check your itinerary for the airline's fees and guidelines on flight changes, or if you need further details, go to our Customer Service portal.

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