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

Select a price to book. see full year.

Dates, airline, and price
Dates Airline Price
15 Sep 22 Oct Singapore Airlines
16 Sep 29 Sep Asiana Airlines
19 Sep 25 Sep Asiana Airlines
09 Sep 23 Sep Air Canada
08 Sep 17 Sep Asiana Airlines
04 Sep 11 Sep Asiana Airlines
04 Sep 10 Sep Asiana Airlines
07 Sep 10 Sep Asiana Airlines
08 Sep 23 Sep Singapore Airlines
08 Sep 11 Sep Asiana Airlines
04 Sep 07 Sep Asiana Airlines
20 Sep 02 Oct Air Canada
28 Sep 02 Oct Korean Air
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Updated Aug 26, 2026.

About these fares

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