Cheapest return flights from Bangkok to Seoul in September from $342

Best time to book flights for Bangkok (DMK) to Seoul (ICN) flights at AirHint

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

Return flights

06 Sep - 15 Sep Thai AirAsia X direct
06 Sep - 16 Sep Thai AirAsia X direct
06 Sep - 20 Sep Thai AirAsia X direct
06 Sep - 13 Sep Thai AirAsia X direct
06 Sep - 19 Sep Thai AirAsia X direct
06 Sep - 10 Sep Thai AirAsia X direct
06 Sep - 21 Sep Thai AirAsia X direct
20 Sep - 21 Sep Thai AirAsia X direct
13 Sep - 15 Sep Thai AirAsia X direct
13 Sep - 16 Sep Thai AirAsia X direct
24 Sep - 11 Oct Thai AirAsia X direct
24 Sep - 08 Oct Thai AirAsia X direct
24 Sep - 09 Oct Thai AirAsia X direct
20 Sep - 11 Oct Thai AirAsia X direct
20 Sep - 08 Oct Thai AirAsia X direct
20 Sep - 09 Oct Thai AirAsia X direct
23 Sep - 11 Oct Thai AirAsia X direct
23 Sep - 08 Oct Thai AirAsia X direct
23 Sep - 09 Oct Thai AirAsia X direct
17 Sep - 08 Oct Thai AirAsia X direct

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