AirHint found the following cheapest return flights from Geneva (GVA) to Istanbul (SAW) in September 2025 (see full year).

Return flights

12 Sep - 21 Sep	AJet	direct
22 Sep - 29 Sep	AJet	direct
04 Sep - 11 Sep	AJet	direct
08 Sep - 29 Sep	AJet	direct
01 Sep - 11 Sep	AJet	direct
28 Sep - 02 Oct	AJet	direct
11 Sep - 14 Sep	AJet	direct
04 Sep - 08 Sep	AJet	direct
07 Sep - 30 Sep	AJet	direct
20 Sep - 26 Sep	Pegasus Airlines	direct
17 Sep - 24 Sep	Pegasus Airlines	direct
16 Sep - 03 Oct	Pegasus Airlines	direct
10 Sep - 12 Oct	Pegasus Airlines	direct
29 Sep - 01 Oct	easyJet

Also check the deals for one-way flights from Geneva 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 return flights from Geneva to Istanbul in September from $131

Return flights