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

Return flights

15 Dec - 12 Jan	Croatia Airlines	direct
16 Dec - 12 Jan	Croatia Airlines	direct
04 Dec - 06 Dec	Ryanair
06 Dec - 13 Dec	Ryanair
11 Dec - 13 Dec	Ryanair
20 Dec - 10 Jan	Ryanair
12 Dec - 15 Dec	LOT
22 Dec - 29 Dec	LOT
22 Dec - 30 Dec	LOT
05 Dec - 10 Dec	Air Serbia
14 Dec - 17 Dec	LOT
03 Dec - 06 Dec	LOT
11 Dec - 16 Dec	LOT
23 Dec - 08 Jan	Ryanair
26 Dec - 15 Jan	Air Serbia
25 Dec - 02 Jan	Austrian Airlines
26 Dec - 05 Jan	Air Serbia
31 Dec - 10 Jan	Ryanair
31 Dec - 06 Jan	Croatia Airlines	direct
26 Dec - 03 Jan	Lufthansa

Also check the deals for one-way flights from Zagreb to Copenhagen 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 Copenhagen in December from $160

Return flights