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

Return flights

10 Oct - 13 Oct	Ryanair
10 Oct - 15 Oct	Ryanair
10 Oct - 14 Oct	Ryanair
19 Oct - 25 Oct	Pegasus Airlines
09 Oct - 18 Oct	Ryanair
03 Oct - 08 Oct	Wizz Air
20 Oct - 26 Oct	Ryanair
12 Oct - 14 Oct	Ryanair
02 Oct - 06 Oct	SKY express
24 Oct - 04 Nov	Wizz Air Malta
12 Oct - 19 Oct	Ryanair
25 Oct - 02 Nov	Wizz Air Malta
26 Oct - 02 Nov	Wizz Air Malta
26 Oct - 02 Nov	Aegean Airlines	direct
24 Oct - 04 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 176€

Return flights