Cheapest return flights from Seattle to Bangkok in February from $521

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

Return flights

01 Feb - 12 Feb Singapore Airlines
06 Feb - 13 Feb Singapore Airlines
01 Feb - 04 Mar Singapore Airlines
05 Feb - 12 Feb Singapore Airlines
05 Feb - 26 Feb Asiana Airlines
01 Feb - 01 Mar Asiana Airlines
15 Feb - 27 Feb Asiana Airlines
10 Feb - 20 Feb Asiana Airlines
15 Feb - 21 Feb Asiana Airlines
19 Feb - 07 Mar Asiana Airlines
26 Feb - 11 Mar Asiana Airlines
07 Feb - 14 Feb Korean Air
18 Feb - 07 Mar Korean Air
04 Feb - 16 Feb China Airlines
12 Feb - 18 Feb Philippine Airlines
14 Feb - 06 Mar EVA Air

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

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