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

Return flights

21 Sep - 28 Sep	Air Transat
26 Sep - 10 Oct	Porter Airlines (Canada) Ltd
15 Sep - 24 Sep	Porter Airlines (Canada) Ltd
15 Sep - 22 Sep	Emirates
10 Sep - 17 Sep	Emirates
17 Sep - 24 Sep	Emirates
17 Sep - 30 Sep	Emirates
22 Sep - 29 Sep	Emirates
08 Sep - 22 Sep	Emirates
22 Sep - 12 Oct	Emirates
22 Sep - 16 Oct	Emirates
23 Sep - 20 Oct	Emirates
15 Sep - 23 Sep	Emirates
16 Sep - 12 Oct	Emirates
16 Sep - 01 Oct	Emirates
23 Sep - 05 Oct	Emirates
23 Sep - 09 Oct	Emirates
16 Sep - 21 Sep	Emirates
17 Sep - 13 Oct	Emirates
28 Sep - 07 Oct	Emirates

Also check the deals for one-way flights from Toronto 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 Toronto to Istanbul in September from $737

Return flights