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

Return flights

03 Sep - 17 Sep	Air China
10 Sep - 17 Sep	Air China
17 Sep - 15 Oct	Air China
01 Sep - 23 Sep	Scoot Tigerair
03 Sep - 24 Oct	Air China
21 Sep - 31 Oct	China Southern
07 Sep - 31 Oct	Singapore Airlines
19 Sep - 24 Oct	Air China
30 Sep - 21 Oct	Malaysia Airlines
07 Sep - 29 Sep	Malaysia Airlines
08 Sep - 31 Oct	Singapore Airlines
04 Sep - 11 Sep	IndiGo
01 Sep - 07 Sep	Singapore Airlines
08 Sep - 15 Sep	IndiGo
07 Sep - 20 Sep	IndiGo
02 Sep - 17 Sep	Singapore Airlines
14 Sep - 21 Sep	IndiGo
29 Sep - 15 Oct	Malaysia Airlines
29 Sep - 13 Oct	Malaysia Airlines
04 Sep - 21 Oct	Etihad Airways

Also check the deals for one-way flights from Melbourne 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 Melbourne to Istanbul in September from $849

Return flights