Cheapest return ATH–IST flights, September

AirHint found the following cheapest return flights from Athens (ATH) to Istanbul (IST) in September 2026 (see full year).

Return flights

02 Sep - 17 Sep SKY express direct
03 Sep - 10 Sep Pegasus Airlines direct
05 Sep - 10 Sep SKY express direct
25 Sep - 30 Sep Pegasus Airlines direct
12 Sep - 23 Sep Pegasus Airlines direct
22 Sep - 30 Sep Pegasus Airlines direct
02 Sep - 11 Sep SKY express direct
02 Sep - 15 Sep SKY express direct
12 Sep - 30 Sep SKY express direct
12 Sep - 15 Sep Pegasus Airlines direct
28 Sep - 01 Oct Pegasus Airlines direct
12 Sep - 01 Oct SKY express direct
29 Sep - 02 Oct Pegasus Airlines direct
29 Sep - 03 Oct Pegasus Airlines direct
15 Sep - 05 Oct SKY express direct
15 Sep - 01 Oct SKY express direct
13 Sep - 01 Oct SKY express direct
14 Sep - 01 Oct SKY express direct
26 Sep - 01 Oct Pegasus Airlines direct
12 Sep - 02 Oct SKY express direct

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

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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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