AirHint found the following cheapest return flights from Oslo (OSL) to Seoul (ICN) in May 2026 (see full year).

Return flights

14 May - 18 May	Hainan Airlines
09 May - 16 May	Finnair
23 May - 30 May	Finnair
16 May - 23 May	Finnair
02 May - 09 May	Finnair
27 May - 17 Jun	Finnair
27 May - 03 Jun	Finnair
11 May - 18 May	Finnair
12 May - 19 May	Finnair
18 May - 25 May	Finnair
19 May - 26 May	Finnair
20 May - 27 May	Finnair
26 May - 02 Jun	Finnair
28 May - 04 Jun	Finnair
29 May - 05 Jun	Finnair
30 May - 06 Jun	Finnair
27 May - 04 Jun	Scandinavian Airlines
01 May - 05 Jun	Finnair
26 May - 03 Jun	Scandinavian Airlines
31 May - 08 Jun	Scandinavian Airlines

Also check the deals for one-way flights from Oslo to Seoul in May.

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 May from $599

Return flights