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

Return flights

01 Oct - 06 Oct	Lufthansa
20 Oct - 25 Oct	Pegasus Airlines
21 Oct - 24 Oct	Pegasus Airlines
24 Oct - 28 Oct	Pegasus Airlines
24 Oct - 29 Oct	Pegasus Airlines
31 Oct - 04 Nov	Ryanair
25 Oct - 28 Oct	Ryanair
14 Oct - 21 Oct	Aegean Airlines
15 Oct - 22 Oct	Turkish Airlines
20 Oct - 23 Oct	Ryanair
16 Oct - 23 Oct	Turkish Airlines
26 Oct - 02 Nov	Wizz Air
31 Oct - 04 Nov	Aegean Airlines	direct
26 Oct - 02 Nov	Aegean Airlines	direct

Also check the deals for one-way flights from Athens 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 Athens to Helsinki in October from 195€

Return flights