Cheapest return flights from Athens to Istanbul in September from $89

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

Return flights

30 Sep - 07 Oct SKY express direct
23 Sep - 14 Oct SKY express direct
12 Sep - 30 Sep SKY express direct
29 Sep - 30 Sep SKY express direct
22 Sep - 29 Sep SKY express direct
16 Sep - 18 Sep SKY express direct
16 Sep - 30 Sep SKY express direct
15 Sep - 30 Sep SKY express direct
19 Sep - 30 Sep SKY express direct
30 Sep - 06 Oct SKY express direct
27 Sep - 04 Oct SKY express direct
16 Sep - 23 Sep SKY express direct
16 Sep - 06 Oct SKY express direct
19 Sep - 06 Oct SKY express direct
25 Sep - 09 Oct SKY express direct
17 Sep - 22 Sep Sichuan Airlines direct
16 Sep - 29 Sep SKY express direct
29 Sep - 05 Oct SKY express direct
29 Sep - 10 Oct SKY express direct
19 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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