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

Return flights

05 Sep - 13 Sep	China Eastern
01 Sep - 07 Sep	Air China
13 Sep - 18 Sep	Air China
15 Sep - 19 Sep	Air China
02 Sep - 08 Sep	Air China
17 Sep - 24 Sep	Air China
05 Sep - 11 Sep	Air China
07 Sep - 17 Sep	Air China
11 Sep - 18 Sep	Air China
12 Sep - 17 Sep	Air China
22 Sep - 02 Oct	Air China
22 Sep - 21 Oct	Air China
27 Sep - 05 Oct	Air India
30 Sep - 05 Oct	Air India
22 Sep - 02 Oct	Scandinavian Airlines	direct
17 Sep - 03 Oct	KLM
25 Sep - 02 Oct	Air China
26 Sep - 02 Oct	Air China
26 Sep - 01 Oct	Air France
26 Sep - 04 Oct	Air France

Also check the deals for one-way flights from Seoul to Copenhagen 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 Copenhagen in September from 529€

Return flights