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

Return flights

02 Oct - 13 Oct	Korean Air
05 Oct - 11 Oct	Air China
16 Oct - 24 Oct	Japan Airlines
18 Oct - 25 Oct	Japan Airlines
16 Oct - 27 Oct	Japan Airlines
23 Oct - 26 Oct	Japan Airlines
22 Oct - 29 Oct	Japan Airlines
25 Oct - 31 Oct	Japan Airlines
08 Oct - 16 Oct	Japan Airlines
04 Oct - 08 Oct	Japan Airlines

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

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 October from 1239€

Return flights