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

Return flights

07 Sep - 14 Sep	Air India
12 Sep - 15 Sep	Air China
11 Sep - 16 Sep	Air China
12 Sep - 17 Sep	Air China
08 Sep - 14 Sep	Air China
11 Sep - 18 Sep	Air China
12 Sep - 19 Sep	Air China
04 Sep - 14 Sep	Air China
02 Sep - 10 Sep	Air China
01 Sep - 10 Sep	Air China
23 Sep - 08 Oct	Etihad Airways
24 Sep - 08 Oct	Finnair
25 Sep - 09 Oct	Air France
23 Sep - 08 Oct	Scandinavian Airlines	direct
19 Sep - 01 Oct	Scandinavian Airlines
12 Sep - 03 Oct	Etihad Airways
12 Sep - 01 Oct	Scandinavian Airlines

Also check the deals for one-way flights from Copenhagen 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 Copenhagen to Seoul in September from 572€

Return flights