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

Return flights

29 Aug - 06 Sep	Jeju Air
17 Aug - 20 Aug	Jeju Air
22 Aug - 27 Aug	Jeju Air
21 Aug - 27 Aug	Jeju Air
28 Aug - 06 Sep	Jeju Air
22 Aug - 24 Aug	Jeju Air
16 Aug - 20 Aug	Jeju Air
15 Aug - 20 Aug	Jeju Air
28 Aug - 31 Aug	Jeju Air
21 Aug - 24 Aug	Jeju Air
16 Aug - 19 Aug	Korean Air
14 Aug - 19 Aug	Jeju Air
15 Aug - 08 Sep	EVA Air
28 Aug - 05 Sep	Air China
30 Aug - 06 Sep	Air China
24 Aug - 01 Sep	Air China
23 Aug - 01 Sep	Air China
29 Aug - 05 Sep	Air China
27 Aug - 05 Sep	Air China

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

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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Cheapest return flights from Seoul to Bangkok in August from 269€

Return flights