Cheapest return flights from Athens to Istanbul in September from $122

Best time to book flights for Athens (ATH) to Istanbul (IST) flights at AirHint

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

Return flights

05 Sep - 10 Sep Pegasus Airlines direct
06 Sep - 11 Sep Pegasus Airlines direct
05 Sep - 09 Sep Pegasus Airlines direct
24 Sep - 28 Sep Pegasus Airlines direct
06 Sep - 21 Sep SKY express direct
06 Sep - 16 Sep SKY express direct
06 Sep - 08 Sep SKY express direct
06 Sep - 15 Sep SKY express direct
06 Sep - 19 Sep SKY express direct
06 Sep - 14 Sep SKY express direct
24 Sep - 13 Oct SKY express direct
24 Sep - 07 Oct SKY express direct
24 Sep - 05 Oct SKY express direct
24 Sep - 12 Oct SKY express direct
24 Sep - 14 Oct SKY express direct
24 Sep - 04 Oct SKY express direct
16 Sep - 05 Oct SKY express direct
16 Sep - 04 Oct SKY express direct
23 Sep - 13 Oct SKY express direct
23 Sep - 07 Oct SKY express direct

Also check the deals for one-way flights from Athens 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.

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