Cheapest return flights from Geneva to Istanbul in September from $172

Best time to book flights for Geneva (GVA) to Istanbul (IST) flights at AirHint

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

Return flights

22 Sep - 27 Sep Pegasus Airlines direct
02 Sep - 15 Oct Pegasus Airlines direct
14 Sep - 28 Sep Pegasus Airlines direct
16 Sep - 20 Sep Pegasus Airlines direct
18 Sep - 22 Sep Pegasus Airlines direct
22 Sep - 28 Sep Pegasus Airlines direct
15 Sep - 19 Sep Pegasus Airlines direct
01 Sep - 15 Sep Pegasus Airlines
04 Sep - 10 Sep Pegasus Airlines
04 Sep - 08 Sep Pegasus Airlines
01 Sep - 15 Sep Pegasus Airlines direct

Also check the deals for one-way flights from Geneva to Istanbul in September.

Skyscanner

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.

Book a cheap hotel in Istanbul

Cheap car rent in Istanbul