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

Return flights

06 Oct - 12 Oct	Pegasus Airlines	direct
13 Oct - 20 Oct	Pegasus Airlines	direct
12 Oct - 20 Oct	Pegasus Airlines	direct
12 Oct - 21 Oct	Pegasus Airlines	direct
02 Oct - 06 Oct	Pegasus Airlines
14 Oct - 21 Oct	Pegasus Airlines
02 Oct - 06 Oct	Pegasus Airlines	direct
13 Oct - 27 Oct	Pegasus Airlines
04 Oct - 12 Oct	AJet
03 Oct - 07 Oct	AJet
25 Oct - 02 Nov	Pegasus Airlines
22 Oct - 04 Nov	Croatia Airlines
25 Oct - 02 Nov	Turkish Airlines	direct

Also check the deals for one-way flights from Istanbul to Zagreb in October.

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 October from 126€

Return flights