Cheapest return flights from Seoul to Bangkok in September from $144

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

Return flights

18 Sep - 24 Sep Vietnam Airlines
17 Sep - 22 Sep Vietnam Airlines
09 Sep - 22 Sep Vietnam Airlines
08 Sep - 10 Sep Vietnam Airlines
05 Sep - 12 Sep Vietnam Airlines
11 Sep - 19 Sep Vietnam Airlines
19 Sep - 23 Sep Vietnam Airlines
17 Sep - 24 Sep Vietnam Airlines
08 Sep - 17 Sep Vietnam Airlines
05 Sep - 09 Sep Vietnam Airlines
13 Sep - 02 Oct Vietnam Airlines
28 Sep - 02 Oct Air Premia direct
20 Sep - 01 Oct Air Premia direct
28 Sep - 01 Oct Air Premia direct
14 Sep - 01 Oct Thai AirAsia X direct
15 Sep - 01 Oct Thai AirAsia X direct
12 Sep - 01 Oct Thai AirAsia X direct
19 Sep - 01 Oct Thai AirAsia X direct
25 Sep - 01 Oct Air Premia direct
10 Sep - 01 Oct Thai AirAsia X direct

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

Skyscanner

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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