AirHint found the following cheapest return flights from Gaziantep (GZT) to Istanbul (SAW) in October 2025 (see full year).

Return flights

02 Oct - 05 Oct	AJet	direct
03 Oct - 05 Oct	Pegasus Airlines	direct
03 Oct - 04 Oct	Pegasus Airlines	direct
04 Oct - 05 Oct	AJet	direct
12 Oct - 13 Oct	AJet	direct
03 Oct - 13 Oct	AJet	direct
04 Oct - 04 Oct	Pegasus Airlines	direct
11 Oct - 20 Oct	AJet	direct
04 Oct - 07 Oct	AJet	direct
11 Oct - 13 Oct	AJet	direct
28 Oct - 01 Nov	AJet	direct
28 Oct - 03 Nov	AJet	direct

Also check the deals for one-way flights from Gaziantep to Istanbul 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 Gaziantep to Istanbul in October from $56

Return flights