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

Return flights

02 Sep - 21 Sep	Emirates
11 Sep - 20 Sep	Emirates
12 Sep - 19 Sep	Emirates
12 Sep - 20 Sep	Emirates
25 Sep - 17 Oct	Emirates
14 Sep - 18 Oct	Emirates
03 Sep - 18 Sep	Qatar Airways
13 Sep - 18 Oct	Emirates
01 Sep - 08 Sep	Qatar Airways
02 Sep - 26 Sep	Emirates
01 Sep - 14 Sep	Qatar Airways
01 Sep - 21 Sep	Qatar Airways
01 Sep - 20 Sep	Qatar Airways
18 Sep - 03 Oct	Qatar Airways
25 Sep - 06 Oct	Emirates
29 Sep - 10 Oct	Qatar Airways

Also check the deals for one-way flights from Adelaide 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 Adelaide to Istanbul in September from $1357

Return flights