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

Return flights

12 Dec - 14 Dec	Ryanair	direct
05 Dec - 07 Dec	Ryanair	direct
07 Dec - 14 Dec	Ryanair	direct
26 Dec - 02 Jan	Ryanair	direct
12 Dec - 15 Dec	Ryanair
21 Dec - 24 Dec	Ryanair	direct
26 Dec - 28 Dec	Ryanair	direct
05 Dec - 08 Dec	Ryanair
26 Dec - 04 Jan	Ryanair	direct
31 Dec - 02 Jan	Ryanair	direct
19 Dec - 22 Dec	Ryanair
19 Dec - 19 Dec	Ryanair
27 Dec - 09 Jan	Air Serbia
28 Dec - 04 Jan	Air Serbia
28 Dec - 04 Jan	Ryanair	direct
27 Dec - 03 Jan	Air Serbia

Also check the deals for one-way flights from Zagreb to Thessaloniki 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 Thessaloniki in December from 40€

Return flights