AirHint found the following cheapest return flights from Seoul (ICN) to Helsinki (HEL) in October 2025 (see full year).

Return flights

27 Oct - 30 Oct	T'way Air
21 Oct - 28 Oct	Lufthansa
23 Oct - 28 Oct	Air France
21 Oct - 27 Oct	Air France
22 Oct - 29 Oct	Air France
29 Oct - 02 Nov	Scandinavian Airlines
26 Oct - 25 Nov	China Eastern
16 Oct - 29 Oct	Air France
20 Oct - 28 Oct	Scandinavian Airlines
23 Oct - 31 Oct	Air France
08 Oct - 23 Oct	Air France
10 Oct - 22 Oct	Lufthansa
28 Oct - 04 Nov	Lufthansa
29 Oct - 03 Nov	Lufthansa
06 Oct - 02 Nov	Lufthansa
29 Oct - 02 Nov	Finnair	direct
27 Oct - 03 Nov	Air France
19 Oct - 02 Nov	Finnair	direct
30 Oct - 06 Nov	Finnair	direct
04 Oct - 02 Nov	HK Express

Also check the deals for one-way flights from Seoul to Helsinki 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 Helsinki in October from $682

Return flights