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

Return flights

06 Dec - 11 Dec	Ryanair
22 Dec - 26 Dec	Austrian Airlines
04 Dec - 11 Dec	Ryanair
10 Dec - 12 Dec	Ryanair
20 Dec - 29 Dec	Austrian Airlines
11 Dec - 13 Dec	Ryanair
04 Dec - 08 Dec	Ryanair
23 Dec - 04 Jan	Ryanair
20 Dec - 23 Dec	Ryanair
05 Dec - 08 Dec	Air Serbia
21 Dec - 30 Dec	Ryanair
26 Dec - 01 Jan	Air Serbia
31 Dec - 04 Jan	Brussels Airlines
26 Dec - 04 Jan	Air Serbia
25 Dec - 01 Jan	LOT
30 Dec - 01 Jan	Ryanair
26 Dec - 02 Jan	Austrian Airlines
30 Dec - 06 Jan	Brussels Airlines
26 Dec - 03 Jan	Austrian Airlines
27 Dec - 01 Jan	Croatia Airlines

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 $158

Return flights