S$555 Cheap Flights from Seattle to Bangkok

View S$555 flight on Mon, 7 Sept, 2026Opens in a new window

Popular airlines from Seattle-Tacoma International Airport (SEA) to Suvarnabhumi Intl. Airport (BKK)

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Cheap Flights from Seattle to Bangkok (SEA-BKK)

Prices were available within the past 7 days and start at S$555 for one-way flights and S$1,037 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Korean Air
Sun, 17 Jan - Sat, 13 Feb
SEA
Seattle
BKK
Bangkok
S$1,037 Return, found 12 hours ago
S$1,037
Return
found 12 hours ago
Select Korean Air flight, departing Sun, 17 Jan from Seattle to Bangkok, returning Sat, 13 Feb, priced at S$1,037 found 12 hours ago
Singapore Airlines
Thu, 12 Nov - Mon, 30 Nov
SEA
Seattle
BKK
Bangkok
S$1,066 Return, found 4 days ago
S$1,066
Return
found 4 days ago
Select Singapore Airlines flight, departing Thu, 12 Nov from Seattle to Bangkok, returning Mon, 30 Nov, priced at S$1,066 found 4 days ago
EVA Airways
Thu, 12 Nov - Mon, 30 Nov
SEA
Seattle
BKK
Bangkok
S$1,139 Return, found 4 days ago
S$1,139
Return
found 4 days ago
Select EVA Airways flight, departing Thu, 12 Nov from Seattle to Bangkok, returning Mon, 30 Nov, priced at S$1,139 found 4 days ago
Delta
Mon, 1 Feb - Fri, 5 Feb
SEA
Seattle
BKK
Bangkok
S$1,257 Return, found 4 days ago
S$1,257
Return
found 4 days ago
Select Delta flight, departing Mon, 1 Feb from Seattle to Bangkok, returning Fri, 5 Feb, priced at S$1,257 found 4 days ago
Philippine Airlines
Thu, 12 Nov - Mon, 30 Nov
SEA
Seattle
BKK
Bangkok
S$1,280 Return, found 4 days ago
S$1,280
Return
found 4 days ago
Select Philippine Airlines flight, departing Thu, 12 Nov from Seattle to Bangkok, returning Mon, 30 Nov, priced at S$1,280 found 4 days ago
China Airlines
Sun, 17 Jan - Sat, 13 Feb
SEA
Seattle
BKK
Bangkok
S$1,342 Return, found 12 hours ago
S$1,342
Return
found 12 hours ago
Select China Airlines flight, departing Sun, 17 Jan from Seattle to Bangkok, returning Sat, 13 Feb, priced at S$1,342 found 12 hours ago
All Nippon Airways
Thu, 12 Nov - Mon, 30 Nov
SEA
Seattle
BKK
Bangkok
S$1,420 Return, found 4 days ago
S$1,420
Return
found 4 days ago
Select All Nippon Airways flight, departing Thu, 12 Nov from Seattle to Bangkok, returning Mon, 30 Nov, priced at S$1,420 found 4 days ago
Cathay Pacific
Thu, 12 Nov - Mon, 30 Nov
SEA
Seattle
BKK
Bangkok
S$1,435 Return, found 4 days ago
S$1,435
Return
found 4 days ago
Select Cathay Pacific flight, departing Thu, 12 Nov from Seattle to Bangkok, returning Mon, 30 Nov, priced at S$1,435 found 4 days ago
STARLUX Airlines
Thu, 12 Nov - Mon, 30 Nov
SEA
Seattle
BKK
Bangkok
S$1,456 Return, found 4 days ago
S$1,456
Return
found 4 days ago
Select STARLUX Airlines flight, departing Thu, 12 Nov from Seattle to Bangkok, returning Mon, 30 Nov, priced at S$1,456 found 4 days ago
Qatar Airways
Mon, 1 Feb - Fri, 5 Feb
SEA
Seattle
BKK
Bangkok
S$1,499 Return, found 4 days ago
S$1,499
Return
found 4 days ago
Select Qatar Airways flight, departing Mon, 1 Feb from Seattle to Bangkok, returning Fri, 5 Feb, priced at S$1,499 found 4 days ago

Find the cheapest month to fly from Seattle (SEA) to Bangkok (BKK)

October is typically the cheapest month to fly

From S$830 - S$1,108 per traveller.

Frequently asked questions

How much is a flight from Seattle - Tacoma Intl. Airport (SEA) to BKK?
The lowest price advertised for a round-trip journey from Sea-Tac Airport to Suvarnabhumi Intl. Airport (BKK) is S$1,037. But you better move fast. This price is taken from fares available within the last 7 days on Expedia for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from SEA to Bangkok Airport?
We understand that things crop up unexpectedly, so we've made it as easy as possible for you to cancel your trip online. Just visit the Customer Service Portal and follow the instructions.
How do I find cheap flights from Seattle - Tacoma Intl. Airport (SEA) to BKK 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 SEA to Suvarnabhumi Airport flights, you'll see a "no change fees" filter for you to select.
How far is the flight from Sea-Tac Airport to Bangkok Airport?
With around 12,000 kilometres separating SeaTac and Bang Phli, your flight will be a long one. Pack wisely and make your trip more comfortable. Little things like warm clothes and a quality travel pillow can make all the difference.
Which airlines fly direct from Sea-Tac Airport to Suvarnabhumi Airport?
Currently, no airlines offer direct flights from Sea-Tac Airport to BKK. You'll have to book a flight with one or more stops. To get the best price and connections, lock in your airfare well ahead of time.
Are Seattle - Tacoma Intl. Airport (SEA) to Bangkok Airport flight tickets cheaper when they're purchased at the last minute?
Tickets from Sea-Tac Airport to BKK are available up to a year prior to departure on Expedia. And although you may occasionally score a great last-minute deal, it's not something you should bank on. Also, booking your flights ahead of time means you'll have more choices — and you can avoid getting stuck in the dreaded middle seat! We regularly update our fares to bring you the biggest bargains, so check back often for all the latest specials.

Travel information

Origin airport
Seattle - Tacoma Intl.
Destination airport
Suvarnabhumi Intl.
Airlines serving
Air Canada, Air France, American Airlines, Cathay Pacific, China Airlines, Delta, EVA Airways, Emirates, Japan Airlines, KLM, Korean Air, Philippine Airlines, Qatar Airways, Singapore Airlines, Turkish Airlines, United
Return price
S$1,037
Distance
11917 km

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