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

Return flights

03 Sep - 07 Sep	Ryanair
19 Sep - 22 Sep	Ryanair
19 Sep - 23 Sep	Croatia Airlines	direct
06 Sep - 13 Sep	Croatia Airlines	direct
19 Sep - 24 Sep	Ryanair
06 Sep - 19 Sep	Croatia Airlines	direct
18 Sep - 24 Sep	Ryanair
09 Sep - 15 Sep	Ryanair
04 Sep - 09 Sep	Ryanair
17 Sep - 21 Sep	Ryanair
24 Sep - 01 Oct	Ryanair
24 Sep - 01 Oct	Croatia Airlines	direct
21 Sep - 03 Oct	Croatia Airlines

Also check the deals for one-way flights from Zagreb to Copenhagen in September.

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 September from 129€

Return flights