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

Return flights

02 Sep - 15 Sep	China Southern
15 Sep - 28 Sep	Sichuan Airlines
10 Sep - 17 Sep	Air China
03 Sep - 22 Oct	Air China
09 Sep - 16 Sep	China Southern
02 Sep - 22 Sep	China Southern
04 Sep - 08 Sep	China Southern
01 Sep - 23 Sep	Jetstar
10 Sep - 29 Oct	Air China
07 Sep - 17 Sep	China Southern
07 Sep - 20 Sep	IndiGo
15 Sep - 13 Oct	IndiGo
16 Sep - 15 Oct	IndiGo
11 Sep - 23 Sep	IndiGo
09 Sep - 24 Oct	China Southern
15 Sep - 15 Oct	IndiGo
19 Sep - 31 Oct	Air China
12 Sep - 31 Oct	Air China
28 Sep - 15 Oct	IndiGo
30 Sep - 15 Oct	IndiGo

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 717€

Return flights