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

View AU$231 flight on Sat, 22 Nov. 2025Opens in a new window

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

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

Prices were available within the past 7 days for one-way flights and round trip tickets for the period specified. Prices and availability are subject to change. Additional terms apply.

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

February is typically the cheapest month to fly

From AU$170 - AU$554 per traveller.

Graph displaying average flight prices per month

Flight from Washington to Houston route information
Origin airport
Ronald Reagan Washington National
Destination airport
George Bush Intercontinental
Distance
1929 km
Average flight time
2 hours 20 mins

Your quick guide to flights from Washington to Houston

Pick up great flights from Washington to Houston

With Expedia, you have your pick of flights a day with 20 airlines covering flights from Washington to Houston. Whether you’re on a business trip, a family holiday or a luxury break, just enter your travel dates, hit search then check out your choice of flights. Select from return, one way or multi-city flights, and use the advance search tool if you want a direct or refundable flight. You can narrow your search to show you just your preferred cabin class and airline, too. It’s all easy. You can book direct flights from Washington to Houston that take around hours.

Find cheap flights from Washington to Houston

From the great flight deals with prices currently ranging from to , you can choose to see the cheapest flights first. Generally, you can book the cheapest flights from Washington to Houston around 4 to 6 weeks in advance. If your travel dates are flexible, try to avoid weekends and peak seasons – when you are more likely to grab the lowest prices. Even last minute, there are some impressive deals. The cheapest time to fly to Houston is normally in .

Reasons to book your flight from Washington to Houston with Expedia

Expedia makes it easy to find, book, and travel, with everything you need all in one place. When you enter your travel details, find fantastic deals just for you on flight tickets from Washington to Houston across all the main airline carriers, so you can save time, dollars, and hassle finding the perfect flight. If you think your plans could change, choose refundable flights so any changes won’t cost you more. Book your flight to Houston right now and, if you join Expedia Rewards, you earn points this time and every time you travel with Expedia.

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 . 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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