S$222 Cheap Flights from Washington to Houston

View S$222 flight on Sat, 30 May, 2026Opens in a new window

Flight 1

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$222 for one-way flights and S$458 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Thu, 4 Jun - Wed, 10 Jun
IAD
Washington
IAH
Houston
S$458 Return, found 6 days ago
S$458
Return
found 6 days ago
Select Delta flight, departing Thu, 4 Jun from Washington to Houston, returning Wed, 10 Jun, priced at S$458 found 6 days ago
Delta
Thu, 4 Jun - Wed, 10 Jun
IAD
Washington
IAH
Houston
S$477 Return, found 6 days ago
S$477
Return
found 6 days ago
Select Delta flight, departing Thu, 4 Jun from Washington to Houston, returning Wed, 10 Jun, priced at S$477 found 6 days ago
United
Thu, 4 Jun - Wed, 10 Jun
IAD
Washington
IAH
Houston
S$491 Return, found 6 days ago
S$491
Return
found 6 days ago
Select United flight, departing Thu, 4 Jun from Washington to Houston, returning Wed, 10 Jun, priced at S$491 found 6 days ago
American Airlines
Thu, 4 Jun - Wed, 10 Jun
IAD
Washington
IAH
Houston
S$497 Return, found 6 days ago
S$497
Return
found 6 days ago
Select American Airlines flight, departing Thu, 4 Jun from Washington to Houston, returning Wed, 10 Jun, priced at S$497 found 6 days ago
Delta
Thu, 4 Jun - Wed, 10 Jun
IAD
Washington
IAH
Houston
S$505 Return, found 6 days ago
S$505
Return
found 6 days ago
Select Delta flight, departing Thu, 4 Jun from Washington to Houston, returning Wed, 10 Jun, priced at S$505 found 6 days ago
Delta
Thu, 4 Jun - Wed, 10 Jun
IAD
Washington
IAH
Houston
S$517 Return, found 6 days ago
S$517
Return
found 6 days ago
Select Delta flight, departing Thu, 4 Jun from Washington to Houston, returning Wed, 10 Jun, priced at S$517 found 6 days ago
United
Thu, 4 Jun - Wed, 10 Jun
IAD
Washington
IAH
Houston
S$523 Return, found 6 days ago
S$523
Return
found 6 days ago
Select United flight, departing Thu, 4 Jun from Washington to Houston, returning Wed, 10 Jun, priced at S$523 found 6 days ago
Delta
Thu, 4 Jun - Wed, 10 Jun
IAD
Washington
IAH
Houston
S$523 Return, found 6 days ago
S$523
Return
found 6 days ago
Select Delta flight, departing Thu, 4 Jun from Washington to Houston, returning Wed, 10 Jun, priced at S$523 found 6 days ago
Delta
Thu, 4 Jun - Wed, 10 Jun
IAD
Washington
IAH
Houston
S$525 Return, found 6 days ago
S$525
Return
found 6 days ago
Select Delta flight, departing Thu, 4 Jun from Washington to Houston, returning Wed, 10 Jun, priced at S$525 found 6 days ago
Delta
Thu, 4 Jun - Wed, 10 Jun
IAD
Washington
IAH
Houston
S$529 Return, found 6 days ago
S$529
Return
found 6 days ago
Select Delta flight, departing Thu, 4 Jun from Washington to Houston, returning Wed, 10 Jun, priced at S$529 found 6 days ago

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$458. 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$458
Distance
1903 km
Average flight time
4 hours 2 mins

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