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

Return flights

03 Dec - 08 Dec	Ryanair
05 Dec - 08 Dec	Ryanair
03 Dec - 07 Dec	Ryanair
12 Dec - 15 Dec	Ryanair
01 Dec - 04 Dec	Ryanair
01 Dec - 03 Dec	Ryanair
18 Dec - 07 Jan	Ryanair
20 Dec - 07 Jan	Ryanair
02 Dec - 09 Dec	KLM
08 Dec - 11 Dec	Ryanair
22 Dec - 30 Dec	Ryanair
14 Dec - 21 Dec	Ryanair
17 Dec - 06 Jan	Ryanair
24 Dec - 02 Jan	Ryanair
30 Dec - 02 Jan	Ryanair
24 Dec - 03 Jan	Ryanair
26 Dec - 01 Jan	Ryanair
29 Dec - 09 Jan	Croatia Airlines
29 Dec - 02 Jan	Ryanair
27 Dec - 03 Jan	Ryanair

Also check the deals for one-way flights from Zagreb 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 Zagreb to Helsinki in December from 119€

Return flights