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

Return flights

15 Oct - 24 Oct	Air China
22 Oct - 28 Oct	Air China
23 Oct - 26 Oct	Air China
14 Oct - 22 Oct	Air China
15 Oct - 21 Oct	Air China
15 Oct - 19 Oct	Air China
14 Oct - 21 Oct	Air China
14 Oct - 25 Oct	Air China
16 Oct - 21 Oct	Air China
14 Oct - 23 Oct	Air China
27 Oct - 03 Nov	Air China
24 Oct - 02 Nov	Air China
30 Oct - 05 Nov	KLM
29 Oct - 26 Nov	Lufthansa
24 Oct - 01 Nov	Air China
18 Oct - 20 Nov	Scandinavian Airlines	direct
29 Oct - 02 Nov	LOT
25 Oct - 02 Nov	LOT
25 Oct - 03 Nov	LOT
31 Oct - 09 Nov	LOT

Also check the deals for one-way flights from Seoul to Copenhagen in October.

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 October from $683

Return flights