Cheapest return flights from Athens to Istanbul in September from $115

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

25 Sep - 28 Sep Pegasus Airlines direct
14 Sep - 21 Sep Pegasus Airlines direct
26 Sep - 28 Sep Pegasus Airlines direct
05 Sep - 07 Sep Pegasus Airlines direct
27 Sep - 01 Oct Aegean Airlines direct
12 Sep - 16 Sep Pegasus Airlines direct
09 Sep - 11 Sep Pegasus Airlines direct
08 Sep - 13 Sep Pegasus Airlines direct
11 Sep - 15 Sep Aegean Airlines direct
17 Sep - 24 Sep SKY express direct
17 Sep - 29 Sep SKY express direct
17 Sep - 07 Oct SKY express direct
17 Sep - 03 Oct SKY express direct
17 Sep - 01 Oct SKY express direct
25 Sep - 09 Oct SKY express direct
25 Sep - 07 Oct SKY express direct
25 Sep - 03 Oct SKY express direct
25 Sep - 10 Oct SKY express direct
25 Sep - 15 Oct SKY express direct
25 Sep - 08 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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