S$549 Cheap Flights from Washington to Bangkok

View S$549 flight on Mon, 13 Apr, 2026Opens in a new window

Popular airlines from Washington Dulles Intl. Airport (IAD) to Suvarnabhumi Intl. Airport (BKK)

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Cheap Flights from Washington to Bangkok (IAD-BKK)

Prices were available within the past 7 days and start at S$549 for one-way flights and S$1,465 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Qatar Airways
Fri, 17 Apr - Fri, 24 Apr
IAD
Washington
BKK
Bangkok
S$1,465 Return, found 5 days ago
S$1,465
Return
found 5 days ago
Select Qatar Airways flight, departing Fri, 17 Apr from Washington to Bangkok, returning Fri, 24 Apr, priced at S$1,465 found 5 days ago
Etihad Airways
Sat, 23 May - Sat, 30 May
IAD
Washington
BKK
Bangkok
S$1,523 Return, found 4 days ago
S$1,523
Return
found 4 days ago
Select Etihad Airways flight, departing Sat, 23 May from Washington to Bangkok, returning Sat, 30 May, priced at S$1,523 found 4 days ago
Emirates
Tue, 21 Jul - Thu, 20 Aug
IAD
Washington
BKK
Bangkok
S$1,834 Return, found 1 day ago
S$1,834
Return
found 1 day ago
Select Emirates flight, departing Tue, 21 Jul from Washington to Bangkok, returning Thu, 20 Aug, priced at S$1,834 found 1 day ago
American Airlines
Tue, 7 Jul - Tue, 18 Aug
IAD
Washington
BKK
Bangkok
S$2,069 Return, found 1 day ago
S$2,069
Return
found 1 day ago
Select American Airlines flight, departing Tue, 7 Jul from Washington to Bangkok, returning Tue, 18 Aug, priced at S$2,069 found 1 day ago
Finnair
Tue, 21 Jul - Fri, 21 Aug
IAD
Washington
BKK
Bangkok
S$2,413 Return, found 1 day ago
S$2,413
Return
found 1 day ago
Select Finnair flight, departing Tue, 21 Jul from Washington to Bangkok, returning Fri, 21 Aug, priced at S$2,413 found 1 day ago
All Nippon Airways
Tue, 7 Jul - Tue, 18 Aug
IAD
Washington
BKK
Bangkok
S$2,471 Return, found 1 day ago
S$2,471
Return
found 1 day ago
Select All Nippon Airways flight, departing Tue, 7 Jul from Washington to Bangkok, returning Tue, 18 Aug, priced at S$2,471 found 1 day ago
Ethiopian Airlines
Sat, 23 May - Sat, 30 May
IAD
Washington
BKK
Bangkok
S$2,478 Return, found 4 days ago
S$2,478
Return
found 4 days ago
Select Ethiopian Airlines flight, departing Sat, 23 May from Washington to Bangkok, returning Sat, 30 May, priced at S$2,478 found 4 days ago
EVA Airways
Tue, 14 Jul - Thu, 20 Aug
IAD
Washington
BKK
Bangkok
S$2,516 Return, found 1 day ago
S$2,516
Return
found 1 day ago
Select EVA Airways flight, departing Tue, 14 Jul from Washington to Bangkok, returning Thu, 20 Aug, priced at S$2,516 found 1 day ago
Saudia
Fri, 19 Jun - Sun, 21 Jun
IAD
Washington
BKK
Bangkok
S$2,522 Return, found 4 days ago
S$2,522
Return
found 4 days ago
Select Saudia flight, departing Fri, 19 Jun from Washington to Bangkok, returning Sun, 21 Jun, priced at S$2,522 found 4 days ago
STARLUX Airlines
Tue, 21 Jul - Thu, 20 Aug
IAD
Washington
BKK
Bangkok
S$2,559 Return, found 1 day ago
S$2,559
Return
found 1 day ago
Select STARLUX Airlines flight, departing Tue, 21 Jul from Washington to Bangkok, returning Thu, 20 Aug, priced at S$2,559 found 1 day ago

Find the cheapest month to fly from Washington (IAD) to Bangkok (BKK)

April is typically the cheapest month to fly

From S$967 - S$2,173 per traveller.

Frequently asked questions

How much is a flight from IAD to Suvarnabhumi Airport?
Within the past 7 days on Expedia, for flights departing within the next year, the lowest price listed for a round-trip flight from IAD to Suvarnabhumi Intl. Airport (BKK) was S$1,465. Fares this good don't wait forever, so make sure you book yours today. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from Dulles Intl. Airport to Suvarnabhumi Intl. Airport (BKK)?
Every air carrier has its own terms and conditions. If you do decide to cancel, follow the easy instructions on our Customer Service Portal.
How do I find cheap flights from Washington Dulles Intl. Airport (IAD) to Suvarnabhumi 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 Dulles Intl. Airport to Bangkok Airport 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 Suvarnabhumi Intl. Airport (BKK)?
With a flight distance of 14,200 kilometres between Chantilly and Bang Phli, this is a long-haul journey. Remember to stay hydrated and move your legs every now and then.
Which airlines fly direct from Washington Dulles Intl. Airport (IAD) to Suvarnabhumi Intl. Airport (BKK)?
At present, no airlines offer direct flights from IAD to Suvarnabhumi Intl. Airport (BKK). You'll have to book a flight with one or more stops. To score the best connections and price, lock in your airfare well in advance.
Are Washington Dulles Intl. Airport (IAD) to Suvarnabhumi Intl. Airport (BKK) flight tickets cheaper when they're purchased at the last minute?
Tickets from IAD to BKK are available up to 12 months prior to departure on Expedia. And although you may occasionally score a fantastic last-minute deal, it's never something you can count on. Also, booking your flights in advance means you'll have more options — and you can avoid getting stuck in the dreaded middle seat! We regularly update our fares to make sure you get the biggest bargains, so keep checking in for all the latest specials.

Travel information

Origin airport
Washington Dulles Intl.
Destination airport
Suvarnabhumi Intl.
Return price
S$1,464
Distance
14075 km

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