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

Return flights

07 Dec - 15 Dec	China Eastern
02 Dec - 06 Dec	China Eastern
19 Dec - 29 Jan	Air China
19 Dec - 31 Jan	Air China
19 Dec - 04 Jan	Air China
27 Dec - 03 Jan	China Southern
19 Dec - 21 Dec	Air China
17 Dec - 29 Jan	Japan Airlines
18 Dec - 29 Jan	Japan Airlines
22 Dec - 06 Jan	Japan Airlines
29 Dec - 08 Jan	Japan Airlines
04 Dec - 09 Dec	Japan Airlines
11 Dec - 14 Dec	Japan Airlines
24 Dec - 31 Dec	Japan Airlines
08 Dec - 11 Dec	Japan Airlines
08 Dec - 14 Dec	Japan Airlines
25 Dec - 29 Dec	Asiana Airlines
17 Dec - 25 Dec	Japan Airlines
31 Dec - 04 Jan	Japan Airlines
24 Dec - 03 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 531€

Return flights