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

Return flights

18 Dec - 03 Jan	Air China
16 Dec - 23 Dec	Japan Airlines
09 Dec - 23 Dec	Japan Airlines
24 Dec - 03 Jan	Japan Airlines
29 Dec - 05 Jan	Japan Airlines
02 Dec - 08 Dec	Japan Airlines
30 Dec - 06 Jan	Japan Airlines
20 Dec - 27 Dec	Japan Airlines
24 Dec - 02 Jan	Japan Airlines
25 Dec - 28 Dec	Japan Airlines
25 Dec - 31 Dec	Japan Airlines
23 Dec - 03 Jan	Japan Airlines
28 Dec - 03 Jan	Japan Airlines
25 Dec - 04 Jan	Japan Airlines
05 Dec - 13 Dec	Japan Airlines
19 Dec - 24 Dec	Japan Airlines
12 Dec - 21 Dec	Japan Airlines

Also check the deals for one-way flights from Seoul to Oslo 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 Oslo in December from $819

Return flights