Cheapest return flights from Bangkok to Seoul in September from $160

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

Return flights

19 Sep - 23 Sep Thai AirAsia X direct
05 Sep - 09 Sep Jin Air direct
06 Sep - 09 Sep Jin Air direct
02 Sep - 09 Sep Eastar Jet direct
09 Sep - 09 Sep Jin Air direct
11 Sep - 16 Sep VietJet Air
05 Sep - 19 Sep HK Express
01 Sep - 14 Sep Thai AirAsia X direct
12 Sep - 19 Sep Thai AirAsia X direct
07 Sep - 09 Sep Jin Air direct
25 Sep - 09 Oct Eastar Jet direct
24 Sep - 09 Oct Eastar Jet direct
29 Sep - 11 Oct VietJet Air
23 Sep - 09 Oct Jin Air direct
25 Sep - 12 Oct Eastar Jet direct
25 Sep - 11 Oct Eastar Jet direct
25 Sep - 16 Oct Eastar Jet direct
25 Sep - 13 Oct Eastar Jet direct
25 Sep - 15 Oct Eastar Jet direct
25 Sep - 10 Oct Eastar Jet 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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