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

Return flights

04 Dec - 10 Dec	Ryanair
04 Dec - 09 Dec	KLM
11 Dec - 14 Dec	KLM
03 Dec - 08 Dec	KLM
02 Dec - 10 Dec	KLM
11 Dec - 15 Dec	KLM
09 Dec - 15 Dec	KLM
10 Dec - 14 Dec	Air France
04 Dec - 11 Dec	Ryanair
05 Dec - 09 Dec	KLM
28 Dec - 06 Jan	airBaltic
25 Dec - 06 Jan	airBaltic
28 Dec - 05 Jan	airBaltic
22 Dec - 04 Jan	Wizz Air
14 Dec - 04 Jan	KLM
29 Dec - 06 Jan	Wizz Air
27 Dec - 05 Jan	Scandinavian Airlines
25 Dec - 04 Jan	easyJet
21 Dec - 02 Jan	Wizz Air
30 Dec - 08 Jan	SKY express

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 $171

Return flights