Cheapest return flights from Seattle to Bangkok in January from $650

AirHint found the following cheapest return flights from Seattle (SEA) to Bangkok (BKK) in January 2026 (see full year).

Return flights

23 Jan - 31 Jan Korean Air
21 Jan - 31 Jan Korean Air
27 Jan - 25 Feb Korean Air
20 Jan - 07 Feb Korean Air
25 Jan - 10 Feb Korean Air
29 Jan - 16 Feb Korean Air
20 Jan - 20 Feb Korean Air
20 Jan - 19 Feb Korean Air
25 Jan - 26 Feb Korean Air
20 Jan - 17 Feb Korean Air
18 Jan - 06 Feb Korean Air
25 Jan - 09 Feb Korean Air
19 Jan - 26 Jan Korean Air
22 Jan - 29 Jan Korean Air
22 Jan - 31 Jan Korean Air
15 Jan - 24 Jan Asiana Airlines
12 Jan - 20 Jan ANA
06 Jan - 15 Jan ANA
10 Jan - 18 Jan Korean Air
01 Jan - 31 Jan EVA Air

Also check the deals for one-way flights from Seattle to Bangkok in January.

Powered by

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

Book a cheap hotel in Bangkok

Cheap car rent in Bangkok

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