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

Return flights

14 Dec - 09 Jan	Wizz Air UK
15 Dec - 09 Jan	Ryanair
13 Dec - 09 Jan	Ryanair
05 Dec - 14 Dec	Wizz Air UK
05 Dec - 07 Dec	Wizz Air UK
01 Dec - 07 Dec	Wizz Air UK
06 Dec - 09 Dec	KLM
01 Dec - 05 Dec	Air France
01 Dec - 08 Dec	Air France
12 Dec - 16 Dec	KLM
02 Dec - 09 Dec	Air France
03 Dec - 09 Dec	KLM
08 Dec - 13 Dec	KLM
12 Dec - 02 Jan	Ryanair
21 Dec - 07 Jan	Ryanair
26 Dec - 02 Jan	Aegean Airlines
24 Dec - 03 Jan	Scandinavian Airlines
31 Dec - 04 Jan	Wizz Air
27 Dec - 03 Jan	airBaltic
23 Dec - 09 Jan	KLM

Also check the deals for one-way flights from Athens to Helsinki in December.

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 December from $166

Return flights