$366 Cheap Asiana Airlines flights Seattle (SEA) to Bangkok (BKK)

View $366 flight on Sun, Sep 7, 2025Opens in a new window

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$366 Cheap Asiana Airlines flights Seattle (SEA) to Bangkok (BKK)

Prices were available within the past 7 days and start at $366 for one-way flights and $667 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Asiana Airlines
Sun, Sep 14 - Sun, Sep 21
SEA
Seattle
BKK
Bangkok
$667 Roundtrip, just found
$667
Roundtrip
just found
Select Asiana Airlines flight, departing Sun, Sep 14 from Seattle to Bangkok, returning Sun, Sep 21, priced at $667 just found
Asiana Airlines
Sun, Nov 16 - Mon, Dec 15
SEA
Seattle
BKK
Bangkok
$675 Roundtrip, just found
$675
Roundtrip
just found
Select Asiana Airlines flight, departing Sun, Nov 16 from Seattle to Bangkok, returning Mon, Dec 15, priced at $675 just found
Asiana Airlines
Sun, Nov 16 - Mon, Dec 15
SEA
Seattle
BKK
Bangkok
$679 Roundtrip, just found
$679
Roundtrip
just found
Select Asiana Airlines flight, departing Sun, Nov 16 from Seattle to Bangkok, returning Mon, Dec 15, priced at $679 just found
Asiana Airlines
Wed, Feb 4 - Fri, Mar 6
SEA
Seattle
BKK
Bangkok
$682 Roundtrip, found 9 hours ago
$682
Roundtrip
found 9 hours ago
Select Asiana Airlines flight, departing Wed, Feb 4 from Seattle to Bangkok, returning Fri, Mar 6, priced at $682 found 9 hours ago
Asiana Airlines
Tue, Feb 10 - Wed, Feb 25
SEA
Seattle
BKK
Bangkok
$682 Roundtrip, found 1 day ago
$682
Roundtrip
found 1 day ago
Select Asiana Airlines flight, departing Tue, Feb 10 from Seattle to Bangkok, returning Wed, Feb 25, priced at $682 found 1 day ago
Asiana Airlines
Tue, Oct 14 - Thu, Oct 23
SEA
Seattle
BKK
Bangkok
$683 Roundtrip, found 2 days ago
$683
Roundtrip
found 2 days ago
Select Asiana Airlines flight, departing Tue, Oct 14 from Seattle to Bangkok, returning Thu, Oct 23, priced at $683 found 2 days ago
Flights from Seattle (SEA) to Bangkok (BKK)
Origin airport
Seattle - Tacoma Intl.
Destination airport
Suvarnabhumi Intl.
Airlines serving
Air Canada, Air France, All Nippon Airways, American Airlines, Asiana Airlines, Cathay Pacific, China Airlines, Condor, Delta, EVA Airways, Emirates, Japan Airlines, KLM, Korean Air, Qatar Airways, STARLUX Airlines, Singapore Airlines, Thai Airways International, Turkish Airlines, United
Popular airline
STARLUX Airlines
Distance
7448 mi

Frequently asked questions

How much is an Asiana Airlines flight from Seattle - Tacoma Intl. Airport (SEA) to Suvarnabhumi Intl. Airport (BKK)?
Landing cheap one-way Asiana Airlines flights from SEA to BKK from $366 on Expedia couldn't be simpler — just filter by "Price (lowest to highest)." Or check out our budget-friendly round-trip fares from $667 for your next adventure.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.
What is the cheapest month to fly from SEA to BKK with Asiana Airlines?
September is one of the most affordable months to fly to Bangkok with Asiana Airlines. You could also find fantastic deals on return and one-way tickets in October.
What is the cheapest time to book flights from Seattle - Tacoma Intl. Airport (SEA) to Suvarnabhumi Intl. Airport (BKK) with Asiana Airlines?
Snagging the best Asiana Airlines deals from SEA to BKK often comes down to booking at the right time. You can save 17% on international flights when you book 18 to 29 days before takeoff instead of four to five months ahead. Better still, you can pocket 17% on average by buying your tickets on a Sunday rather than a Friday, which is usually the most expensive day to book.* It's a good idea to start searching for flights about one month before you plan to travel.*Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC's global airline sales database.
Does Asiana Airlines fly nonstop from Seattle - Tacoma Intl. Airport (SEA) to Suvarnabhumi Intl. Airport (BKK)?
Use our "Nonstop" filter when looking for direct Asiana Airlines flights from SEA to BKK. You'll also be able to compare other carriers servicing the same direct trip.
What is the earliest Asiana Airlines flight from SEA to BKK?
To find the earliest departures from SEA to BKK with Asiana Airlines, filter your results by "Early Morning" and "Morning." Booking an early flight usually means cancellations are less likely.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports does Asiana Airlines fly into in Bangkok?
Take an Asiana Airlines flight from Seattle - Tacoma Intl. Airport (SEA) to Bangkok, and you'll most likely land at Suvarnabhumi Intl. Airport (BKK). This is the airline's main hub here.
What kind of luggage can I take on an Asiana Airlines flight from Seattle - Tacoma Intl. Airport (SEA) to Suvarnabhumi Intl. Airport (BKK)?
Asiana Airlines allows you to bring 2 checked-in bags weighing up to 50 lb with maximum dimensions of 62 inches on standard economy flights from SEA to BKK. Additionally, you can take 1 cabin bag with you in the cabin. This hand luggage must not exceed 21 inches x 15 inches x 7 inches and weigh less than 22 lb. Baggage allowances can differ based on your cabin class and fare type, so double-check your booking or Asiana Airlines's website to avoid paying unexpected fees at the airport.
Why fly with Asiana Airlines from SEA to BKK?
With top-tier customer service and a rewarding loyalty program, Asiana Airlines is a popular option for many passengers flying from SEA to BKK. What's more, if you're an Asiana Club and One Key™ member booking with Expedia, you could earn OneKeyCash™* on eligible flights on top of your airline miles, which can go toward future travel.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.
Can I change or cancel my Asiana Airlines flight from Seattle - Tacoma Intl. Airport (SEA) to Suvarnabhumi Intl. Airport (BKK)?
Changes are typically free within 24 hours of making your booking, but your airline may add a charge after that. For further information about modifying your reservation, go to your "Trips," select your flight and click on "Manage Booking." If you want the flexibility to update your itinerary without being charged, apply the "Changes included" and "No cancel fee" filters when planning your next escape.

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*Available to One Key members.