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

Return flights

03 Dec - 10 Dec	Ryanair
05 Dec - 22 Dec	Lufthansa
05 Dec - 20 Dec	Lufthansa
05 Dec - 23 Dec	Lufthansa
06 Dec - 21 Dec	Lufthansa
14 Dec - 31 Jan	Lufthansa
12 Dec - 14 Dec	Scandinavian Airlines
15 Dec - 31 Dec	Finnair
31 Dec - 09 Jan	Lufthansa
20 Dec - 29 Dec	Finnair
17 Dec - 21 Dec	Finnair
13 Dec - 05 Jan	Finnair
20 Dec - 09 Jan	Finnair
27 Dec - 04 Jan	Finnair
23 Dec - 09 Jan	Lufthansa
19 Dec - 24 Dec	airBaltic
21 Dec - 02 Jan	Finnair
20 Dec - 03 Jan	LOT
18 Dec - 03 Jan	Finnair
23 Dec - 03 Jan	Air France

Also check the deals for one-way flights from Oslo to Seoul 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 Oslo to Seoul in December from $614

Return flights