S$241 Cheap Flights from Washington to Houston

View S$241 flight on Mon, 23 Mar, 2026Opens 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$241 for one-way flights and S$629 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Sun, 29 Mar - Sat, 4 Apr
IAD
Washington
IAH
Houston
S$629 Return, found 2 days ago
S$629
Return
found 2 days ago
Select United flight, departing Sun, 29 Mar from Washington to Houston, returning Sat, 4 Apr, priced at S$629 found 2 days ago
United
Sun, 29 Mar - Sat, 4 Apr
IAD
Washington
IAH
Houston
S$681 Return, found 2 days ago
S$681
Return
found 2 days ago
Select United flight, departing Sun, 29 Mar from Washington to Houston, returning Sat, 4 Apr, priced at S$681 found 2 days ago
United
Sun, 29 Mar - Sat, 4 Apr
IAD
Washington
IAH
Houston
S$691 Return, found 2 days ago
S$691
Return
found 2 days ago
Select United flight, departing Sun, 29 Mar from Washington to Houston, returning Sat, 4 Apr, priced at S$691 found 2 days ago
United
Sun, 29 Mar - Sat, 4 Apr
IAD
Washington
IAH
Houston
S$731 Return, found 2 days ago
S$731
Return
found 2 days ago
Select United flight, departing Sun, 29 Mar from Washington to Houston, returning Sat, 4 Apr, priced at S$731 found 2 days ago
Delta
Sun, 29 Mar - Sat, 4 Apr
IAD
Washington
IAH
Houston
S$745 Return, found 2 days ago
S$745
Return
found 2 days ago
Select Delta flight, departing Sun, 29 Mar from Washington to Houston, returning Sat, 4 Apr, priced at S$745 found 2 days ago
United
Sun, 29 Mar - Sat, 4 Apr
IAD
Washington
IAH
Houston
S$747 Return, found 2 days ago
S$747
Return
found 2 days ago
Select United flight, departing Sun, 29 Mar from Washington to Houston, returning Sat, 4 Apr, priced at S$747 found 2 days ago
United
Sun, 29 Mar - Sat, 4 Apr
IAD
Washington
IAH
Houston
S$781 Return, found 2 days ago
S$781
Return
found 2 days ago
Select United flight, departing Sun, 29 Mar from Washington to Houston, returning Sat, 4 Apr, priced at S$781 found 2 days ago
United
Sun, 29 Mar - Sat, 4 Apr
IAD
Washington
IAH
Houston
S$789 Return, found 2 days ago
S$789
Return
found 2 days ago
Select United flight, departing Sun, 29 Mar from Washington to Houston, returning Sat, 4 Apr, priced at S$789 found 2 days ago
United
Sun, 29 Mar - Sat, 4 Apr
IAD
Washington
IAH
Houston
S$799 Return, found 2 days ago
S$799
Return
found 2 days ago
Select United flight, departing Sun, 29 Mar from Washington to Houston, returning Sat, 4 Apr, priced at S$799 found 2 days ago
American Airlines
Sun, 29 Mar - Sat, 4 Apr
IAD
Washington
IAH
Houston
S$942 Return, found 2 days ago
S$942
Return
found 2 days ago
Select American Airlines flight, departing Sun, 29 Mar from Washington to Houston, returning Sat, 4 Apr, priced at S$942 found 2 days ago

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

January is typically the cheapest month to fly

From S$143 - S$349 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$629. 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
Return price
S$629
Distance
1903 km
Average flight time
2 hours 44 mins

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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$241 and roundtrip prices from S$629*.
 

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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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