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

Return flights

30 Oct - 20 Nov	Air France
04 Oct - 20 Oct	KLM
23 Oct - 30 Oct	KLM
28 Oct - 05 Nov	Finnair	direct
15 Oct - 22 Oct	Ryanair
30 Oct - 20 Nov	Finnair	direct
22 Oct - 29 Oct	Finnair	direct
25 Oct - 15 Nov	Scandinavian Airlines
23 Oct - 30 Oct	Finnair	direct
13 Oct - 20 Oct	Ryanair
02 Oct - 16 Nov	KLM
31 Oct - 06 Nov	Finnair	direct
01 Oct - 30 Nov	Finnair	direct
02 Oct - 16 Nov	Finnair	direct
31 Oct - 09 Nov	Finnair	direct
04 Oct - 20 Oct	Finnair	direct
25 Oct - 15 Nov	Finnair	direct
04 Oct - 18 Oct	Finnair	direct
29 Oct - 31 Oct	Turkish Airlines
04 Oct - 19 Oct	KLM

Also check the deals for one-way flights from Helsinki 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.

Book a cheap hotel in Seoul

Cheap car rent in Seoul

Cheapest return flights from Helsinki to Seoul in October from $734

Return flights