AirHint found the following cheapest return flights from Seoul (ICN) to Copenhagen (CPH) in September 2026 (see full year).

Return flights

07 Sep - 12 Sep	Vietnam Airlines
30 Sep - 13 Oct	Vietnam Airlines
07 Sep - 13 Sep	Air China
12 Sep - 18 Sep	Air China
04 Sep - 10 Sep	Air China
01 Sep - 07 Sep	Air China
08 Sep - 14 Sep	Air China
09 Sep - 15 Sep	Air China
13 Sep - 19 Sep	Air China
02 Sep - 08 Sep	Air China
10 Sep - 16 Sep	Air China
26 Sep - 04 Oct	Air India
24 Sep - 11 Oct	Air India
28 Sep - 04 Oct	Air China
27 Sep - 03 Oct	Air China
17 Sep - 08 Oct	Air China
17 Sep - 09 Oct	Air China
30 Sep - 07 Oct	Lufthansa
17 Sep - 08 Oct	Scandinavian Airlines	direct
18 Sep - 09 Oct	Vietnam Airlines

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 488€

Return flights