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

Return flights

12 Sep - 19 Sep	Air China
01 Sep - 15 Sep	Air China
02 Sep - 16 Sep	Air China
01 Sep - 18 Sep	Air China
09 Sep - 15 Sep	Air China
09 Sep - 16 Sep	Air China
01 Sep - 10 Sep	Air China
02 Sep - 09 Sep	Air China
01 Sep - 11 Sep	Air China
04 Sep - 07 Sep	Air China
21 Sep - 04 Oct	Scandinavian Airlines
13 Sep - 10 Oct	Turkish Airlines

Also check the deals for one-way flights from Stockholm to Seoul 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 Stockholm to Seoul in September from 451€

Return flights