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

Return flights

12 Dec - 14 Dec	AJet
21 Dec - 25 Dec	Pegasus Airlines	direct
26 Dec - 04 Jan	Aegean Airlines
10 Dec - 17 Dec	LOT
26 Dec - 04 Jan	Turkish Airlines	direct
10 Dec - 17 Dec	Turkish Airlines	direct
12 Dec - 14 Dec	Turkish Airlines	direct
31 Dec - 04 Jan	Aegean Airlines
31 Dec - 04 Jan	Turkish Airlines	direct
21 Dec - 24 Dec	Pegasus Airlines
20 Dec - 24 Dec	LOT
28 Dec - 30 Dec	LOT
19 Dec - 22 Dec	Air Serbia
19 Dec - 22 Dec	Turkish Airlines	direct

Also check the deals for one-way flights from Istanbul to Zagreb 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 Istanbul to Zagreb in December from 154€

Return flights