Cheapest return flights from Seoul to Bangkok in September from $306

Best time to book flights for Seoul (GMP) to Bangkok (BKK) flights at AirHint

AirHint found the following cheapest return flights from Seoul (GMP) to Bangkok (BKK) in September 2025 (see full year).

Return flights

30 Sep - 11 Oct China Eastern
13 Sep - 17 Sep EVA Air
12 Sep - 17 Sep EVA Air
05 Sep - 11 Sep EVA Air
19 Sep - 22 Sep EVA Air
24 Sep - 30 Sep EVA Air
05 Sep - 12 Sep EVA Air
12 Sep - 19 Sep EVA Air
10 Sep - 30 Sep EVA Air
30 Sep - 30 Oct EVA Air
10 Sep - 18 Sep EVA Air
30 Sep - 10 Oct EVA Air
23 Sep - 26 Sep EVA Air
26 Sep - 08 Oct EVA Air
26 Sep - 09 Oct EVA Air
30 Sep - 08 Oct EVA Air
30 Sep - 04 Oct Japan Airlines
25 Sep - 05 Oct Japan Airlines
27 Sep - 05 Oct Japan Airlines
26 Sep - 05 Oct Japan Airlines

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

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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.

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