Cheapest return GMP–BKK flights, September

AirHint found the following cheapest return flights from Seoul (GMP) to Bangkok (BKK) in September 2026 (see full year).

Return flights

15 Sep - 17 Sep Jeju Air
15 Sep - 18 Sep Jeju Air
08 Sep - 10 Sep Jeju Air
08 Sep - 17 Sep Jeju Air
08 Sep - 11 Sep Jeju Air
05 Sep - 10 Sep Jeju Air
12 Sep - 14 Sep Jeju Air
01 Sep - 04 Sep Jeju Air
12 Sep - 18 Sep Jeju Air
01 Sep - 14 Sep Jeju Air
28 Sep - 13 Oct Air China
08 Sep - 06 Oct Air China
19 Sep - 02 Oct EVA Air
26 Sep - 07 Oct Air China
30 Sep - 06 Oct Air China
30 Sep - 05 Oct Air China
28 Sep - 12 Oct Air China
27 Sep - 01 Oct Jeju Air
30 Sep - 07 Oct EVA Air
28 Sep - 11 Oct Air China

Also check the deals for one-way flights from Seoul to Bangkok in September.

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