S$321 Cheap Flights from Washington to Houston

View S$321 flight on Fri, 21 Nov, 2025Opens in a new window

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

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Cheap Flights from Washington to Houston (IAD-IAH)

Prices were available within the past 7 days and start at S$321 for one-way flights and S$786 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Sun, 19 Oct - Sun, 26 Oct
IAD
Washington
IAH
Houston
S$786 Return, found 22 hours ago
S$786
Return
found 22 hours ago
Select United flight, departing Sun, 19 Oct from Washington to Houston, returning Sun, 26 Oct, priced at S$786 found 22 hours ago
United
Sun, 19 Oct - Sun, 26 Oct
IAD
Washington
IAH
Houston
S$791 Return, found 22 hours ago
S$791
Return
found 22 hours ago
Select United flight, departing Sun, 19 Oct from Washington to Houston, returning Sun, 26 Oct, priced at S$791 found 22 hours ago
American Airlines
Sun, 19 Oct - Sun, 26 Oct
IAD
Washington
IAH
Houston
S$803 Return, found 22 hours ago
S$803
Return
found 22 hours ago
Select American Airlines flight, departing Sun, 19 Oct from Washington to Houston, returning Sun, 26 Oct, priced at S$803 found 22 hours ago
Delta
Sun, 19 Oct - Sun, 26 Oct
IAD
Washington
IAH
Houston
S$815 Return, found 22 hours ago
S$815
Return
found 22 hours ago
Select Delta flight, departing Sun, 19 Oct from Washington to Houston, returning Sun, 26 Oct, priced at S$815 found 22 hours ago
American Airlines
Sun, 19 Oct - Sun, 26 Oct
IAD
Washington
IAH
Houston
S$819 Return, found 22 hours ago
S$819
Return
found 22 hours ago
Select American Airlines flight, departing Sun, 19 Oct from Washington to Houston, returning Sun, 26 Oct, priced at S$819 found 22 hours ago
United
Sun, 19 Oct - Sun, 26 Oct
IAD
Washington
IAH
Houston
S$823 Return, found 22 hours ago
S$823
Return
found 22 hours ago
Select United flight, departing Sun, 19 Oct from Washington to Houston, returning Sun, 26 Oct, priced at S$823 found 22 hours ago
Delta
Sun, 19 Oct - Sun, 26 Oct
IAD
Washington
IAH
Houston
S$832 Return, found 22 hours ago
S$832
Return
found 22 hours ago
Select Delta flight, departing Sun, 19 Oct from Washington to Houston, returning Sun, 26 Oct, priced at S$832 found 22 hours ago
United
Sun, 19 Oct - Sun, 26 Oct
IAD
Washington
IAH
Houston
S$836 Return, found 22 hours ago
S$836
Return
found 22 hours ago
Select United flight, departing Sun, 19 Oct from Washington to Houston, returning Sun, 26 Oct, priced at S$836 found 22 hours ago
United
Sun, 19 Oct - Sun, 26 Oct
IAD
Washington
IAH
Houston
S$843 Return, found 22 hours ago
S$843
Return
found 22 hours ago
Select United flight, departing Sun, 19 Oct from Washington to Houston, returning Sun, 26 Oct, priced at S$843 found 22 hours ago
American Airlines
Sun, 19 Oct - Sun, 26 Oct
IAD
Washington
IAH
Houston
S$848 Return, found 22 hours ago
S$848
Return
found 22 hours ago
Select American Airlines flight, departing Sun, 19 Oct from Washington to Houston, returning Sun, 26 Oct, priced at S$848 found 22 hours ago

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

September is typically the cheapest month to fly

From S$169 - S$230 per traveller.

Frequently asked questions

How much is a flight from IAD to George Bush Intercontinental Airport (IAH)?
Start packing your bags, because round-trip journeys from Washington Dulles Intl. Airport (IAD) to IAH start from S$786. That's based on airfares available within the last 7 days on Expedia for flights departing within the next year. Prices can rise quickly, so book now to score the best deal. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from Washington Dulles Intl. Airport (IAD) to IAH?
Every air carrier has its own set of terms and conditions. If you do decide to cancel, follow the simple instructions on our Customer Service Portal.
How do I find cheap flights from IAD to IAH 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 Washington Dulles Intl. Airport (IAD) to George Bush Intercontinental Airport (IAH) flights, you'll see a "no change fees" filter for you to select.
How far is the flight from Washington Dulles Intl. Airport (IAD) to Houston Airport?
You'll be in the air for a while, as the flight distance from Dulles Intl. Airport to George Bush Intercontinental Airport (IAH) is 1,900 kilometres. Put together a playlist of your favourite tunes before leaving home to keep yourself entertained during your flight.
Which airlines fly direct from IAD to Houston Airport?
If you'd like to fly directly from Washington Dulles Intl. Airport (IAD) to IAH, United Airlines (UA) is a top choice. It operates 121 flights each month between Chantilly and Houston.
Are IAD to IAH flight tickets cheaper when they're purchased at the last minute?
Booking your trip from Washington Dulles Intl. Airport (IAD) to George Bush Intercontinental Airport (IAH) at the last minute could save you some cash. However, it could end up costing a good deal more! If you'd prefer not to take the risk, book well ahead of your departure date. In fact, Expedia has some of the best bargains up to a year in advance. If your preferred air carrier hasn't released tickets yet, check back frequently as deals are updated on Expedia all the time.

Travel information

Origin airport
Washington Dulles Intl.
Destination airport
George Bush Intercontinental
Airlines serving
American Airlines, Delta, United
Return price
S$786
Distance
1903 km
Average flight time
3 hours 58 mins

Book with confidence

Perfect flights from Washington to Houston

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Experience the joy of finding cheap flights from Washington Dulles Intl. to George Bush Intercontinental that fit your budget. Keep an eye out for our special deals and discounts, and check our flexible one-way fares from S$321 and roundtrip prices from S$786*.
 

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*Note: Prices may vary based on availability and are subject to change.
Perfect flights from Washington to Houston

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Houston Airports

Houston

Washington to George Bush Intercontinental
S$785.90
*Available to Expedia members.