Cheap Flights from Seattle (SEA) to Bangkok (BKK) from HK$2,665~

View HK$2,665 flight on Wed, 8 Apr 2026Opens in a new window

Popular airlines from Seattle to Bangkok (BKK-Suvarnabhumi Intl.)

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Find Cheap Flights from Seattle (SEA) to Bangkok (BKK)

Prices were available within the past 7 days and start at HK$2,665 for one-way flights and HK$5,321 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Philippine Airlines
Wed, 9 Sept - Wed, 16 Sept
SEA
Seattle
BKK
Bangkok
HK$5,321 Return, found 4 days ago
HK$5,321
Return
found 4 days ago
Select Philippine Airlines flight, departing Wed, 9 Sept from Seattle to Bangkok, returning Wed, 16 Sept, priced at HK$5,321 found 4 days ago
Delta
Sun, 15 Mar - Tue, 31 Mar
SEA
Seattle
BKK
Bangkok
HK$5,370 Return, found 1 day ago
HK$5,370
Return
found 1 day ago
Select Delta flight, departing Sun, 15 Mar from Seattle to Bangkok, returning Tue, 31 Mar, priced at HK$5,370 found 1 day ago
Korean Air
Sat, 7 Mar - Sat, 14 Mar
SEA
Seattle
BKK
Bangkok
HK$5,450 Return, found 4 days ago
HK$5,450
Return
found 4 days ago
Select Korean Air flight, departing Sat, 7 Mar from Seattle to Bangkok, returning Sat, 14 Mar, priced at HK$5,450 found 4 days ago
All Nippon Airways
Sat, 17 Jan - Fri, 30 Jan
SEA
Seattle
BKK
Bangkok
HK$6,261 Return, found 6 days ago
HK$6,261
Return
found 6 days ago
Select All Nippon Airways flight, departing Sat, 17 Jan from Seattle to Bangkok, returning Fri, 30 Jan, priced at HK$6,261 found 6 days ago
Asiana Airlines
Sat, 7 Mar - Sat, 14 Mar
SEA
Seattle
BKK
Bangkok
HK$6,309 Return, found 4 days ago
HK$6,309
Return
found 4 days ago
Select Asiana Airlines flight, departing Sat, 7 Mar from Seattle to Bangkok, returning Sat, 14 Mar, priced at HK$6,309 found 4 days ago
EVA Airways
Wed, 9 Sept - Wed, 16 Sept
SEA
Seattle
BKK
Bangkok
HK$6,422 Return, found 4 days ago
HK$6,422
Return
found 4 days ago
Select EVA Airways flight, departing Wed, 9 Sept from Seattle to Bangkok, returning Wed, 16 Sept, priced at HK$6,422 found 4 days ago
Cathay Pacific
Wed, 9 Sept - Wed, 16 Sept
SEA
Seattle
BKK
Bangkok
HK$6,481 Return, found 4 days ago
HK$6,481
Return
found 4 days ago
Select Cathay Pacific flight, departing Wed, 9 Sept from Seattle to Bangkok, returning Wed, 16 Sept, priced at HK$6,481 found 4 days ago
STARLUX Airlines
Wed, 9 Sept - Wed, 16 Sept
SEA
Seattle
BKK
Bangkok
HK$6,606 Return, found 4 days ago
HK$6,606
Return
found 4 days ago
Select STARLUX Airlines flight, departing Wed, 9 Sept from Seattle to Bangkok, returning Wed, 16 Sept, priced at HK$6,606 found 4 days ago
United
Wed, 9 Sept - Wed, 16 Sept
SEA
Seattle
BKK
Bangkok
HK$6,847 Return, found 4 days ago
HK$6,847
Return
found 4 days ago
Select United flight, departing Wed, 9 Sept from Seattle to Bangkok, returning Wed, 16 Sept, priced at HK$6,847 found 4 days ago
China Airlines
Sun, 15 Mar - Tue, 31 Mar
SEA
Seattle
BKK
Bangkok
HK$7,311 Return, found 1 day ago
HK$7,311
Return
found 1 day ago
Select China Airlines flight, departing Sun, 15 Mar from Seattle to Bangkok, returning Tue, 31 Mar, priced at HK$7,311 found 1 day ago

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

January is typically the cheapest month to fly

From HK$4,739 - HK$11,165 per traveller.
Seattle to Bangkok route information
Origin airport
Seattle - Tacoma Intl.
Destination airport
Suvarnabhumi Intl.
Airlines serving
Air Canada, All Nippon Airways, Asiana Airlines, Cathay Pacific, Delta, Emirates, Korean Air, Philippine Airlines, Qatar Airways, Thai Airways International, United
Return price
HK$5,321
Distance
11917 km

Flights from Seattle to Bangkok

Book cheap flights from Seattle (SEA) to Bangkok (BKK) on Expedia.com.hk. Find the best flight deals to destinations around the world for your next leisure or business travel on Expedia.com.hk.

Search for flights from Seattle (SEA) to Bangkok (BKK) to find great flight deals suitable to your travel date and time. Expedia.com.hk flight booking search engine is simple to use and looking for cheap flights is as easy as a click of a mouse or on your mobile devices.

Be assured that you’re seeing the best price guaranteed! Our friendly customer service representatives are here to serve you 24 hours day to provide assistance and answer any questions that you may have about booking your Seattle (SEA) to Bangkok (BKK) trip. Call us at 3077-4857 (direct number - 24 hours day for English).

Save more when combine your Bangkok flight with a hotel for a package deal! Discover additional savings by booking in advance. Now you can find activities in Bangkok and things to do in Bangkok for your perfect vacation with Expedia Thing to Do.

If you would like to book flights to Bangkok more flexibly, many prefer to purchase one-way tickets with options to take different airlines. A one way ticket to Bangkok is HK$2,665 now!

 

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 HK$5,321. 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 kilometers 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.
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