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

Return flights

01 Dec - 09 Dec	Air China
22 Dec - 29 Dec	Air China
22 Dec - 04 Jan	Air China
24 Dec - 31 Dec	Air China
14 Dec - 21 Dec	Air China
19 Dec - 04 Jan	Air China
17 Dec - 06 Jan	Japan Airlines
18 Dec - 19 Jan	Japan Airlines
10 Dec - 16 Dec	Japan Airlines
31 Dec - 08 Jan	Japan Airlines
20 Dec - 03 Jan	Japan Airlines
08 Dec - 14 Dec	Japan Airlines
24 Dec - 04 Jan	Japan Airlines
22 Dec - 31 Dec	Japan Airlines
24 Dec - 03 Jan	Japan Airlines
27 Dec - 03 Jan	Japan Airlines
08 Dec - 11 Dec	Japan Airlines
01 Dec - 02 Dec	Asiana Airlines
10 Dec - 18 Dec	Japan Airlines
23 Dec - 06 Jan	Japan Airlines

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

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 December from $609

Return flights