AirHint found the following cheapest return flights from Seoul (GMP) to Stockholm (ARN) in September 2025 (see full year).

Return flights

06 Sep - 09 Sep	Japan Airlines
26 Sep - 12 Oct	Air China
06 Sep - 08 Sep	Japan Airlines
06 Sep - 10 Sep	Japan Airlines
26 Sep - 28 Sep	Korean Air
29 Sep - 14 Oct	Japan Airlines
25 Sep - 13 Oct	Japan Airlines
22 Sep - 27 Sep	Japan Airlines
26 Sep - 05 Oct	Japan Airlines
29 Sep - 12 Oct	Japan Airlines
29 Sep - 13 Oct	Japan Airlines
26 Sep - 03 Oct	Japan Airlines
23 Sep - 30 Sep	Japan Airlines
21 Sep - 28 Sep	Japan Airlines
21 Sep - 27 Sep	Japan Airlines
15 Sep - 18 Sep	ANA

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

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 Stockholm in September from $1231

Return flights