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

Return flights

02 Dec - 11 Dec	Air France
30 Dec - 07 Jan	Lufthansa
26 Dec - 04 Jan	Lufthansa
02 Dec - 12 Dec	Finnair
23 Dec - 30 Dec	Lufthansa
25 Dec - 28 Dec	KLM
12 Dec - 20 Dec	Finnair
10 Dec - 17 Dec	Finnair
18 Dec - 29 Dec	Lufthansa
17 Dec - 22 Dec	Finnair
31 Dec - 06 Jan	Scandinavian Airlines
28 Dec - 03 Jan	China Eastern
27 Dec - 01 Jan	KLM
28 Dec - 02 Jan	Lufthansa
12 Dec - 19 Dec	Lufthansa

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 516€

Return flights