$135 Cheap Flights from Houston (IAH) to Washington (DCA)

View $135 flight on Thu, Jun 26, 2025Opens in a new window

Popular airlines from George Bush Intercontinental Airport (IAH) to Ronald Reagan Washington National Airport (DCA)

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Find available prices by choosing your travel dates.

Cheap Flights from Houston to Washington (IAH-DCA)

Prices were available within the past 7 days and start at $135 for one-way flights and $244 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Sat, May 17 - Tue, May 20
IAH
Houston
DCA
Washington
$244 Roundtrip, just found
$244
Roundtrip
just found
Select United flight, departing Sat, May 17 from Houston to Washington, returning Tue, May 20, priced at $244 just found
Delta
Sat, May 17 - Tue, May 20
IAH
Houston
DCA
Washington
$254 Roundtrip, just found
$254
Roundtrip
just found
Select Delta flight, departing Sat, May 17 from Houston to Washington, returning Tue, May 20, priced at $254 just found
United
Fri, May 16 - Mon, May 19
IAH
Houston
DCA
Washington
$258 Roundtrip, just found
$258
Roundtrip
just found
Select United flight, departing Fri, May 16 from Houston to Washington, returning Mon, May 19, priced at $258 just found
United
Mon, May 19 - Wed, May 21
IAH
Houston
DCA
Washington
$261 Roundtrip, found 11 hours ago
$261
Roundtrip
found 11 hours ago
Select United flight, departing Mon, May 19 from Houston to Washington, returning Wed, May 21, priced at $261 found 11 hours ago
American Airlines
Thu, May 29 - Sat, May 31
IAH
Houston
DCA
Washington
$264 Roundtrip, found 7 hours ago
$264
Roundtrip
found 7 hours ago
Select American Airlines flight, departing Thu, May 29 from Houston to Washington, returning Sat, May 31, priced at $264 found 7 hours ago
Delta
Fri, May 16 - Mon, May 19
IAH
Houston
DCA
Washington
$268 Roundtrip, just found
$268
Roundtrip
just found
Select Delta flight, departing Fri, May 16 from Houston to Washington, returning Mon, May 19, priced at $268 just found
United
Sat, May 24 - Sat, May 31
IAH
Houston
DCA
Washington
$269 Roundtrip, just found
$269
Roundtrip
just found
Select United flight, departing Sat, May 24 from Houston to Washington, returning Sat, May 31, priced at $269 just found
United
Thu, Jun 26 - Sun, Jun 29
IAH
Houston
DCA
Washington
$269 Roundtrip, just found
$269
Roundtrip
just found
Select United flight, departing Thu, Jun 26 from Houston to Washington, returning Sun, Jun 29, priced at $269 just found
JetBlue Airways
Tue, Jun 17 - Tue, Jun 24
IAH
Houston
DCA
Washington
$270 Roundtrip, just found
$270
Roundtrip
just found
Select JetBlue Airways flight, departing Tue, Jun 17 from Houston to Washington, returning Tue, Jun 24, priced at $270 just found
Frontier Airlines
Sat, May 17 - Tue, May 20
IAH
Houston
DCA
Washington
$289 Roundtrip, just found
$289
Roundtrip
just found
Select Frontier Airlines flight, departing Sat, May 17 from Houston to Washington, returning Tue, May 20, priced at $289 just found
Flights from Houston (IAH) to Washington (DCA)
Origin airport
George Bush Intercontinental
Destination airport
Ronald Reagan Washington National
Airlines serving
American Airlines, Delta, Frontier Airlines, JetBlue Airways, United
Roundtrip price
$244
Distance
1206 mi

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 May. 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 $135 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 Ronald Reagan Washington National Airport (DCA) cost?
Cheap round-trip fares from George Bush Intercontinental Airport (IAH) to Ronald Reagan Washington National Airport (DCA) start from $201. 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 May 17 2025 and touching down at DCA. The price was last updated on April 24 2025 and has not changed since.
What is the cheapest month to fly from IAH to DCA?
The cheapest flights from IAH to DCA 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 Ronald Reagan Washington National Airport (DCA)?
Catch a nonstop flight with United Airlines and travel straight from George Bush Intercontinental Airport (IAH) to Ronald Reagan Washington National Airport (DCA).
What is the cheapest airline that flies from IAH to DCA?
Journey from IAH to DCA with United. This carrier currently offers the lowest one-way fare for this route, starting from $135. This fare is based on the lowest price found on Expedia departing within the next three months. The flight takes off from IAH on July 20 2025. Prices were last updated on April 24 2025 and have not changed since.
How many flights per day from George Bush Intercontinental Airport (IAH) to Ronald Reagan Washington National Airport (DCA)?
With, on average, 6 nonstop flights that operate from George Bush Intercontinental Airport (IAH) to Ronald Reagan Washington National Airport (DCA) every day, you’ll be cruising above the clouds before you know it.
What are the most popular departure times for flights from George Bush Intercontinental Airport (IAH) to Ronald Reagan Washington National Airport (DCA)?
Flights between IAH and DCA are busiest at 7 AM. If you’re after a less crowded experience and potentially cheaper tickets, look for a time outside the usual busy windows.
What day of the week has the most flights from IAH to DCA?
Sunday offers the most flights from George Bush Intercontinental Airport (IAH) to Ronald Reagan Washington National Airport (DCA). Consider jetting off on this day and you’ll have a greater chance of finding a schedule that works for you.
What is the earliest flight from George Bush Intercontinental Airport (IAH) to Ronald Reagan Washington National Airport (DCA)?
Hop on the earliest flight at around 7:33AM UTC-6, departing from George Bush Intercontinental Airport (IAH). You’ll be flying for approximately 2h 58m, landing at Ronald Reagan Washington National Airport (DCA) at approximately 11:31AM UTC-5.
How long does it take to fly from George Bush Intercontinental Airport (IAH) to Ronald Reagan Washington National Airport (DCA)?
Flights from IAH to DCA have an average travel time of 2 hours and 59 minutes. The total distance between the two airports is 1,200 mi.
What airline has the least delays from IAH to DCA?
With 81% of flights generally arriving on time, United Airlines has the best on-time performance for direct flights from George Bush Intercontinental Airport (IAH) to Ronald Reagan Washington National Airport (DCA). To monitor your flight status and get notifications if anything changes, simply head to the Expedia App.
What is the best time to fly from George Bush Intercontinental Airport (IAH) to Ronald Reagan Washington National Airport (DCA)?
To arrive at Ronald Reagan Washington National Airport (DCA) on schedule, choose a flight that leaves from George Bush Intercontinental Airport (IAH) before 3 PM. The chance of cancellations is 22% higher, on average, for departures after this hour.**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)?
Board a direct flight from George Bush Intercontinental Airport (IAH) to Washington and touch down at any 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 Ronald Reagan Washington National Airport (DCA) last-minute?
Holding off until just before your departure to book a ticket from IAH to DCA often results in higher prices. Although you may find some last-minute discounts, there’s no guarantee. Be flexible with your travel plans for the best chance of getting a bargain.
Is it cheaper to book an IAH to DCA flight and hotel package?
Compared with arranging hotels and flights separately, booking an IAH to DCA flight and hotel package with Expedia could result in significant savings. Better yet, having everything in one place will take the stress out of planning your trip. Just secure your flights and choose from our extensive range of hotels, then customize your trip with extras like tours and car rentals.
Can I cancel or change the date of my flight from George Bush Intercontinental Airport (IAH) to Ronald Reagan Washington National Airport (DCA)?
In most instances, you can cancel or reschedule your IAH to DCA flight. However, additional charges may apply, especially if you made your booking over 24 hours ago. Double-check your itinerary for the airline’s guidelines and fees on flight changes, or if you want further information, visit our Customer Service portal.

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