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
02 Dec 15 Dec Singapore Airlines
28 Dec 18 Jan Asiana Airlines
31 Dec 30 Jan Korean Air
04 Dec 24 Dec Asiana Airlines
09 Dec 30 Dec Asiana Airlines
27 Dec 28 Dec Asiana Airlines
26 Dec 09 Jan ANA
03 Dec 30 Dec Korean Air
25 Dec 09 Jan Singapore Airlines
06 Dec 06 Jan Korean Air
18 Dec 02 Jan Turkish Airlines
28 Dec 04 Jan Asiana Airlines
14 Dec 28 Dec Asiana Airlines
25 Dec 03 Jan Asiana Airlines
03 Dec 15 Dec Air Canada
17 Dec 02 Jan WestJet
18 Dec 31 Dec WestJet
20 Dec 03 Jan Alaska Airlines
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 Jul 20, 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.