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

Return flights

23 Oct - 26 Oct	Lufthansa
16 Oct - 26 Oct	Lufthansa
10 Oct - 28 Oct	Lufthansa
27 Oct - 11 Nov	Lufthansa
20 Oct - 27 Oct	Lufthansa
27 Oct - 10 Nov	Lufthansa
14 Oct - 21 Oct	Lufthansa
22 Oct - 29 Oct	Lufthansa
11 Oct - 21 Oct	Lufthansa
13 Oct - 25 Oct	Lufthansa
16 Oct - 21 Oct	Lufthansa
14 Oct - 23 Oct	Lufthansa
27 Oct - 03 Nov	Lufthansa
28 Oct - 02 Nov	Lufthansa
28 Oct - 08 Nov	Lufthansa
30 Oct - 06 Nov	Lufthansa
29 Oct - 05 Nov	Lufthansa
24 Oct - 01 Nov	Lufthansa
26 Oct - 06 Nov	KLM
31 Oct - 07 Nov	Lufthansa

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 486€

Return flights