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 - 08 Dec	KLM
04 Dec - 09 Dec	KLM
09 Dec - 13 Dec	KLM
06 Dec - 09 Dec	KLM
03 Dec - 09 Dec	KLM
10 Dec - 12 Dec	Wizz Air
03 Dec - 08 Dec	KLM
16 Dec - 09 Jan	KLM
02 Dec - 09 Dec	KLM
03 Dec - 10 Dec	Ryanair
18 Dec - 04 Jan	Aegean Airlines
25 Dec - 06 Jan	airBaltic
23 Dec - 09 Jan	Ryanair
31 Dec - 06 Jan	easyJet
19 Dec - 06 Jan	Ryanair
30 Dec - 05 Jan	SkyUp Malta
29 Dec - 06 Jan	Ryanair
25 Dec - 04 Jan	LOT
29 Dec - 07 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 157€

Return flights