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

Return flights

04 Dec - 11 Dec	Ryanair
12 Dec - 14 Dec	Aegean Airlines
19 Dec - 22 Dec	Ryanair
05 Dec - 14 Dec	Air Serbia
19 Dec - 21 Dec	Ryanair
06 Dec - 13 Dec	Air Serbia
12 Dec - 16 Dec	Air Serbia
12 Dec - 15 Dec	Air Serbia
01 Dec - 04 Dec	Air Serbia
06 Dec - 10 Dec	Air Serbia
19 Dec - 01 Jan	Air Serbia
27 Dec - 02 Jan	Air Serbia
27 Dec - 03 Jan	Air Serbia
30 Dec - 04 Jan	Ryanair
17 Dec - 02 Jan	Aegean Airlines
29 Dec - 04 Jan	Ryanair
21 Dec - 04 Jan	Ryanair
26 Dec - 09 Jan	Ryanair
31 Dec - 12 Jan	Volotea	direct
31 Dec - 16 Jan	Volotea	direct

Also check the deals for one-way flights from Athens to Zagreb 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 Zagreb in December from $130

Return flights