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

Return flights

07 Aug - 12 Aug	EVA Air
12 Aug - 19 Aug	EVA Air
19 Aug - 26 Aug	EVA Air
26 Aug - 02 Sep	EVA Air
08 Aug - 12 Aug	EVA Air
15 Aug - 18 Aug	EVA Air
28 Aug - 10 Sep	Air China
14 Aug - 20 Aug	Air China
04 Aug - 18 Aug	EVA Air
05 Aug - 10 Aug	EVA Air
01 Aug - 10 Aug	EVA Air
14 Aug - 17 Aug	EVA Air
29 Aug - 05 Sep	Air China
25 Aug - 01 Sep	Air China
29 Aug - 04 Sep	Air China
30 Aug - 07 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 $516

Return flights