$55 Cheap Flights from Houston (IAH) to Washington (IAD)

View $55 flight on Thu, Nov 13, 2025Opens in a new window

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

Cheap Flights from Houston to Washington (IAH-IAD)

Prices were available within the past 7 days and start at $55 for one-way flights and $110 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Tue, Nov 11 - Tue, Nov 18
IAH
Houston
IAD
Washington
$110 Roundtrip, just found
$110
Roundtrip
just found
Select Frontier Airlines flight, departing Tue, Nov 11 from Houston to Washington, returning Tue, Nov 18, priced at $110 just found
Frontier Airlines
Thu, Nov 13 - Tue, Nov 18
IAH
Houston
IAD
Washington
$120 Roundtrip, just found
$120
Roundtrip
just found
Select Frontier Airlines flight, departing Thu, Nov 13 from Houston to Washington, returning Tue, Nov 18, priced at $120 just found
Frontier Airlines
Sat, Dec 6 - Sat, Dec 13
IAH
Houston
IAD
Washington
$130 Roundtrip, found 3 hours ago
$130
Roundtrip
found 3 hours ago
Select Frontier Airlines flight, departing Sat, Dec 6 from Houston to Washington, returning Sat, Dec 13, priced at $130 found 3 hours ago
Frontier Airlines
Thu, Nov 13 - Mon, Nov 17
IAH
Houston
IAD
Washington
$140 Roundtrip, just found
$140
Roundtrip
just found
Select Frontier Airlines flight, departing Thu, Nov 13 from Houston to Washington, returning Mon, Nov 17, priced at $140 just found
Frontier Airlines
Thu, Nov 13 - Sun, Nov 16
IAH
Houston
IAD
Washington
$143 Roundtrip, just found
$143
Roundtrip
just found
Select Frontier Airlines flight, departing Thu, Nov 13 from Houston to Washington, returning Sun, Nov 16, priced at $143 just found
Frontier Airlines
Tue, Nov 11 - Tue, Nov 18
IAH
Houston
IAD
Washington
$148 Roundtrip, just found
$148
Roundtrip
just found
Select Frontier Airlines flight, departing Tue, Nov 11 from Houston to Washington, returning Tue, Nov 18, priced at $148 just found
United
Thu, Dec 25 - Wed, Jan 7
IAH
Houston
IAD
Washington
$190 Roundtrip, found 3 days ago
$190
Roundtrip
found 3 days ago
Select United flight, departing Thu, Dec 25 from Houston to Washington, returning Wed, Jan 7, priced at $190 found 3 days ago
American Airlines
Wed, Jan 28 - Sat, Jan 31
IAH
Houston
IAD
Washington
$191 Roundtrip, found 5 days ago
$191
Roundtrip
found 5 days ago
Select American Airlines flight, departing Wed, Jan 28 from Houston to Washington, returning Sat, Jan 31, priced at $191 found 5 days ago
Delta
Tue, Dec 9 - Tue, Dec 30
IAH
Houston
IAD
Washington
$217 Roundtrip, found 3 days ago
$217
Roundtrip
found 3 days ago
Select Delta flight, departing Tue, Dec 9 from Houston to Washington, returning Tue, Dec 30, priced at $217 found 3 days ago
Alaska Airlines
Sat, Jan 10 - Tue, Jan 13
IAH
Houston
IAD
Washington
$473 Roundtrip, just found
$473
Roundtrip
just found
Select Alaska Airlines flight, departing Sat, Jan 10 from Houston to Washington, returning Tue, Jan 13, priced at $473 just found

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

March is typically the cheapest month to fly

From $126 - $397 per traveler.

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 $260
DCA
Ronald Reagan Washington National
Closest
Average driving time to city center8 min
Flights from $260

Frequently asked questions

How much does a flight from George Bush Intercontinental Airport (IAH) to Washington Dulles Intl. Airport (IAD) cost?
Get a cheap one-way flight from $55 or cheap return flight from $110 from George Bush Intercontinental Airport (IAH) to Washington Dulles Intl. Airport (IAD) 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 George Bush Intercontinental Airport (IAH) to Washington Dulles Intl. Airport (IAD)?
November is the least expensive month to fly from IAH to IAD. Traveling during quieter months is often the key to better flight prices.
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 George Bush Intercontinental Airport (IAH) to Washington Dulles Intl. Airport (IAD)?
To find the cheapest airline that'll fly you from IAH to IAD, use Expedia's filter tool. Tailor your search based on your travel needs, such as preferred carriers and number of stops. You can then sort your results by "Price (lowest to highest)" to see the most affordable options first.
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.

Travel information

Origin airport
George Bush Intercontinental
Destination airport
Washington Dulles Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, United
Roundtrip price
$110
Distance
1189 mi
Average flight time
5 hours 2 mins

Book with confidence

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 November. 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 $55 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.

 

Houston to Washington Flights

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*Available to One Key members.