Cheapest return flights from Seattle to Bangkok in January from 499€

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

Return flights

27 Jan - 05 Feb Singapore Airlines
24 Jan - 02 Feb Singapore Airlines
08 Jan - 18 Jan Asiana Airlines
18 Jan - 06 Feb Asiana Airlines
06 Jan - 18 Jan Asiana Airlines
25 Jan - 01 Feb Asiana Airlines
14 Jan - 22 Jan Korean Air
17 Jan - 29 Jan Korean Air
21 Jan - 26 Jan Korean Air
18 Jan - 29 Jan Asiana Airlines
01 Jan - 31 Jan Korean Air
04 Jan - 15 Jan ANA
10 Jan - 18 Jan Asiana Airlines

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

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