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

Return flights

05 Sep - 08 Sep	Aegean Airlines	direct
05 Sep - 07 Sep	Aegean Airlines
05 Sep - 09 Sep	Aegean Airlines
04 Sep - 08 Sep	Aegean Airlines
01 Sep - 05 Sep	Aegean Airlines	direct
01 Sep - 08 Sep	Aegean Airlines	direct
12 Sep - 19 Sep	Aegean Airlines
21 Sep - 25 Sep	SKY express
21 Sep - 26 Sep	SKY express
21 Sep - 22 Sep	SKY express

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

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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Cheapest return flights from Mykonos to Istanbul in September from 138€

Return flights