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

Return flights

25 Oct - 31 Oct	Hainan Airlines
02 Oct - 10 Oct	Hainan Airlines
18 Oct - 01 Nov	Lufthansa
25 Oct - 28 Oct	Hainan Airlines
25 Oct - 01 Nov	Hainan Airlines
05 Oct - 20 Nov	Japan Airlines
05 Oct - 15 Nov	Japan Airlines
05 Oct - 16 Nov	Japan Airlines
24 Oct - 01 Nov	Japan Airlines
01 Oct - 22 Oct	British Airways
02 Oct - 22 Oct	Japan Airlines
25 Oct - 29 Oct	British Airways
01 Oct - 21 Oct	British Airways
02 Oct - 23 Oct	Japan Airlines

Also check the deals for one-way flights from Oslo to Seoul 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 Oslo to Seoul in October from $960

Return flights