S$221 Cheap Flights from Washington to Houston

View S$221 flight on Thu, 4 Dec, 2025Opens in a new window

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

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Cheap Flights from Washington to Houston (DCA-IAH)

Prices were available within the past 7 days and start at S$221 for one-way flights and S$426 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Sun, 31 Aug - Wed, 10 Sep
DCA
Washington
IAH
Houston
S$426 Return, found 2 days ago
S$426
Return
found 2 days ago
Select Delta flight, departing Sun, 31 Aug from Washington to Houston, returning Wed, 10 Sep, priced at S$426 found 2 days ago
Delta
Sun, 31 Aug - Mon, 8 Sep
DCA
Washington
IAH
Houston
S$469 Return, found 2 days ago
S$469
Return
found 2 days ago
Select Delta flight, departing Sun, 31 Aug from Washington to Houston, returning Mon, 8 Sep, priced at S$469 found 2 days ago
Delta
Tue, 2 Sep - Wed, 10 Sep
DCA
Washington
IAH
Houston
S$474 Return, found 2 days ago
S$474
Return
found 2 days ago
Select Delta flight, departing Tue, 2 Sep from Washington to Houston, returning Wed, 10 Sep, priced at S$474 found 2 days ago
United
Thu, 4 Dec - Thu, 11 Dec
DCA
Washington
IAH
Houston
S$480 Return, found 4 hours ago
S$480
Return
found 4 hours ago
Select United flight, departing Thu, 4 Dec from Washington to Houston, returning Thu, 11 Dec, priced at S$480 found 4 hours ago
Delta
Sun, 31 Aug - Sun, 7 Sep
DCA
Washington
IAH
Houston
S$491 Return, found 2 days ago
S$491
Return
found 2 days ago
Select Delta flight, departing Sun, 31 Aug from Washington to Houston, returning Sun, 7 Sep, priced at S$491 found 2 days ago
Delta
Sun, 31 Aug - Sat, 6 Sep
DCA
Washington
IAH
Houston
S$494 Return, found 2 days ago
S$494
Return
found 2 days ago
Select Delta flight, departing Sun, 31 Aug from Washington to Houston, returning Sat, 6 Sep, priced at S$494 found 2 days ago
Delta
Fri, 5 Dec - Sun, 7 Dec
DCA
Washington
IAH
Houston
S$513 Return, found 2 hours ago
S$513
Return
found 2 hours ago
Select Delta flight, departing Fri, 5 Dec from Washington to Houston, returning Sun, 7 Dec, priced at S$513 found 2 hours ago
Delta
Sun, 31 Aug - Sun, 7 Sep
DCA
Washington
IAH
Houston
S$517 Return, found 2 days ago
S$517
Return
found 2 days ago
Select Delta flight, departing Sun, 31 Aug from Washington to Houston, returning Sun, 7 Sep, priced at S$517 found 2 days ago
American Airlines
Thu, 4 Dec - Thu, 11 Dec
DCA
Washington
IAH
Houston
S$518 Return, found 4 hours ago
S$518
Return
found 4 hours ago
Select American Airlines flight, departing Thu, 4 Dec from Washington to Houston, returning Thu, 11 Dec, priced at S$518 found 4 hours ago
United
Thu, 4 Dec - Thu, 11 Dec
DCA
Washington
IAH
Houston
S$518 Return, found 4 hours ago
S$518
Return
found 4 hours ago
Select United flight, departing Thu, 4 Dec from Washington to Houston, returning Thu, 11 Dec, priced at S$518 found 4 hours ago

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

February is typically the cheapest month to fly

From S$141 - S$377 per traveller.

Graph displaying average flight prices per month

Washington to Houston route information
Origin airport
Ronald Reagan Washington National
Destination airport
George Bush Intercontinental
Return price
S$426
Distance
1929 km
Average flight time
2 hours 22 mins

Flights from Washington to Houston

There are several airlines that operate frequent flights from Washington D.C. (DCA) to Houston (IAH) including

The earliest flight leaves Ronald Reagan Washington National Airport at 05:45 and arrives at George Bush Intercontinental Airport at 07:48. The last flight of the day departs Washington D.C. at 19:45 and arrives at Houston at 22:09.

The flight distance from Washington D.C. to Houston is about 1950 km, the shortest flight is 03 hours 03 minutes with United Airlines."

Expedia lets you search across the largest number of airlines and Houston flights, which means that you’ll be able to find a great flight deal at the perfect travel date and time. Our simple-to-use booking engine makes looking for terrific bargains easy and hassle-free; just enter your travel dates and departure city, and let Expedia do the rest! Adjust your travel dates and explore connecting flights to find an even better deal on your Washington Houston flight!

Browse through dozens of options and rest assured that you’re seeing the best price guaranteed! Our friendly customer service representatives are here to serve you 24 hours day to provide assistance and answer any questions that you may have about booking your Washington to Houston trip. There’s simply no substitute for great prices suited to your travel needs and backed by excellent customer support.

Combine your Houston flight with a hotel and/or car rental for a package deal designed to save you even more money! Discover additional savings by booking in advance or find a last minute deal. There are tons of ways to save on your flights from Washington to Houston with Expedia. Use us as your stop travel destination and have the confidence that you’re getting a bargain!

Frequently asked questions

How much is a flight from National Airport to George Bush Intercontinental Airport (IAH)?
Based on fares advertised within the last 7 days on Expedia for flights departing within the next year, round-trip journeys from National Airport to Houston Airport start from S$426. Make your booking ASAP to secure the best price for your trip. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from DCA to George Bush Intercontinental Airport (IAH)?
Every airline has its own set of terms and conditions. If you decide to cancel your trip, visit our Customer Service Portal.
How do I find cheap flights from Ronald Reagan Washington National Airport (DCA) to Houston Airport that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for DCA to Houston Airport flights, you'll see a "no change fees" filter for you to select.
How far is the flight from National Airport to George Bush Intercontinental Airport (IAH)?
It's around 1,950 kilometres between Arlington and Houston, so you'll be up in the air for a while. Keep yourself entertained by packing things like playing cards (if you're travelling with friends) or a thrilling novel.
Which airlines fly direct from DCA to George Bush Intercontinental Airport (IAH)?
If you want to fly straight from Ronald Reagan Washington National Airport (DCA) to Houston Airport, United Airlines (UA) is a top choice. It operates 208 monthly flights between Arlington and Houston.
Are Ronald Reagan Washington National Airport (DCA) to George Bush Intercontinental Airport (IAH) flight tickets cheaper when they're purchased at the last minute?
Last-minute planners can sometimes score a bargain, with some of the cheapest airfares from Ronald Reagan Washington National Airport (DCA) to George Bush Intercontinental Airport (IAH) surfacing a few weeks prior to the departure date. If you'd rather plan ahead, Expedia compares and updates the best flight deals frequently — as early as 12 months in advance in some cases. It depends on the carrier though, as not all airlines quote prices so far in advance.

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