AirHint found the following cheapest one-way flights from Gaziantep (GZT) to Istanbul (SAW) in September 2025 (see full year).

One-Way flights

17 Sep	Pegasus Airlines	direct
10 Sep	AJet	direct
16 Sep	AJet	direct
30 Sep	Pegasus Airlines	direct
15 Sep	Pegasus Airlines	direct
09 Sep	AJet	direct
11 Sep	AJet	direct
29 Sep	Pegasus Airlines	direct
13 Sep	Pegasus Airlines	direct
18 Sep	Pegasus Airlines	direct

Also check the deals for return flights from Gaziantep to Istanbul 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 one-way flights from Gaziantep to Istanbul in September from $39

One-Way flights