Cheapest return flights from Ontario to Istanbul in September from $1062

Best time to book flights for Ontario (ONT) to Istanbul (IST) flights at AirHint

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

Return flights

15 Sep - 22 Sep Qatar Airways
14 Sep - 30 Sep Qatar Airways
17 Sep - 24 Sep Qatar Airways
10 Sep - 17 Sep Qatar Airways
22 Sep - 06 Oct Qatar Airways
11 Sep - 03 Oct Qatar Airways
24 Sep - 05 Oct Qatar Airways
07 Sep - 15 Sep Qatar Airways
13 Sep - 27 Sep Qatar Airways
05 Sep - 22 Sep Etihad Airways
25 Sep - 09 Oct Turkish Airlines

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

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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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