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

Return flights

23 Dec - 18 Jan	Pegasus Airlines	direct
04 Dec - 09 Dec	Pegasus Airlines	direct
04 Dec - 07 Dec	Pegasus Airlines	direct
18 Dec - 23 Dec	Pegasus Airlines	direct
30 Dec - 04 Jan	Pegasus Airlines	direct
18 Dec - 22 Dec	Pegasus Airlines
25 Dec - 03 Jan	Pegasus Airlines
30 Dec - 03 Jan	Pegasus Airlines
22 Dec - 26 Dec	Croatia Airlines
29 Dec - 03 Jan	Croatia Airlines
29 Dec - 02 Jan	Eurowings
17 Dec - 22 Dec	Eurowings
24 Dec - 17 Jan	Eurowings
26 Dec - 10 Jan	Ryanair
19 Dec - 05 Jan	Ryanair
27 Dec - 03 Jan	Ryanair

Also check the deals for one-way flights from Zagreb to Istanbul 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 Istanbul in December from $140

Return flights