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

Return flights

13 Aug - 27 Aug	Thai AirAsia X
13 Aug - 27 Aug	Thai AirAsia X	direct
08 Aug - 15 Aug	Thai AirAsia X	direct
15 Aug - 17 Aug	Thai AirAsia X	direct
10 Aug - 16 Aug	Thai AirAsia X	direct
02 Aug - 30 Aug	Vietnam Airlines
01 Aug - 21 Aug	Thai AirAsia X	direct
02 Aug - 30 Aug	Thai AirAsia X	direct
09 Aug - 09 Aug	Thai AirAsia X
06 Aug - 13 Aug	China Southern

Also check the deals for one-way flights from Bangkok to Seoul 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 Bangkok to Seoul in August from 174€

Return flights