Cheapest return flights from Seattle (SEA) to Bangkok (BKK), December

Select a price to book. see full year.

Dates, airline, and price
Dates Airline Price
08 Dec 27 Dec Asiana Airlines
25 Dec 20 Jan Asiana Airlines
25 Dec 18 Jan Korean Air
25 Dec 19 Jan Singapore Airlines
24 Dec 17 Jan Alaska Airlines
25 Dec 08 Jan Asiana Airlines
23 Dec 17 Jan Alaska Airlines
06 Dec 06 Jan Alaska Airlines
22 Dec 05 Jan Singapore Airlines
21 Dec 28 Dec Asiana Airlines
09 Dec 01 Jan Alaska Airlines
25 Dec 03 Jan Asiana Airlines
05 Dec 19 Dec Air Canada
Powered by

deals for one-way flights from Seattle to Bangkok in December.

Book a cheap hotel in Bangkok

Cheap car rent in Suvarnabhumi Intl

Updated Jun 18, 2026.

About these fares

These results come from our latest search across airlines for your currency. Prices change quickly and are not locked until you complete booking—always confirm the total and fare rules on the partner site.

Feel free to contact us with any feedback or request another flight research.