AirHint found the following cheapest return flights from Ottawa (YOW) to Istanbul (SAW) in September 2025 (see full year).

Return flights

18 Sep - 11 Oct	WestJet
21 Sep - 11 Oct	WestJet
07 Sep - 14 Sep	Porter Airlines (Canada) Ltd
15 Sep - 11 Oct	WestJet
01 Sep - 27 Sep	Porter Airlines (Canada) Ltd
16 Sep - 15 Oct	Emirates
11 Sep - 04 Oct	Emirates

Also check the deals for one-way flights from Ottawa 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 Ottawa to Istanbul in September from $781

Return flights