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

Return flights

21 Dec - 07 Jan	KLM
02 Dec - 09 Dec	Air France
03 Dec - 10 Dec	Air France
09 Dec - 16 Dec	Lufthansa
12 Dec - 16 Dec	Lufthansa
01 Dec - 10 Dec	LOT
01 Dec - 08 Dec	LOT
25 Dec - 05 Jan	Lufthansa
10 Dec - 04 Jan	Lufthansa
17 Dec - 04 Jan	Lufthansa
25 Dec - 28 Dec	Lufthansa
14 Dec - 04 Jan	Lufthansa
26 Dec - 04 Jan	Lufthansa
23 Dec - 30 Dec	Lufthansa
23 Dec - 02 Jan	Lufthansa
04 Dec - 16 Dec	Lufthansa
25 Dec - 01 Jan	Lufthansa
24 Dec - 01 Jan	KLM
21 Dec - 30 Dec	Lufthansa
29 Dec - 02 Jan	Air France

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 $607

Return flights