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

Return flights

20 Sep - 28 Sep	Scandinavian Airlines
19 Sep - 23 Sep	Scandinavian Airlines
20 Sep - 26 Sep	Scandinavian Airlines
20 Sep - 02 Oct	Scandinavian Airlines
17 Sep - 22 Sep	SWISS
19 Sep - 26 Sep	Scandinavian Airlines
01 Sep - 04 Sep	Emirates
03 Sep - 09 Sep	Emirates
18 Sep - 01 Oct	T'way Air
23 Sep - 30 Sep	KLM
16 Sep - 30 Sep	Emirates
09 Sep - 16 Sep	Emirates
22 Sep - 01 Oct	Emirates
02 Sep - 01 Oct	Emirates
18 Sep - 02 Oct	Air France
26 Sep - 04 Oct	Air France
27 Sep - 04 Oct	Air France
26 Sep - 07 Oct	Air France
29 Sep - 12 Oct	Thai Airways
29 Sep - 15 Oct	Emirates

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

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 September from $747

Return flights