AirHint found the following cheapest one-way flights from Toronto (YTZ) to Istanbul (IST) in October 2025 (see full year).

One-Way flights

18 Oct	Porter Airlines (Canada) Ltd
15 Oct	Porter Airlines (Canada) Ltd
10 Oct	Porter Airlines (Canada) Ltd
08 Oct	Porter Airlines (Canada) Ltd
26 Oct	Porter Airlines (Canada) Ltd
07 Oct	Porter Airlines (Canada) Ltd
28 Oct	Porter Airlines (Canada) Ltd
14 Oct	Porter Airlines (Canada) Ltd
12 Oct	Porter Airlines (Canada) Ltd
19 Oct	Porter Airlines (Canada) Ltd

Also check the deals for return flights from Toronto to Istanbul in October.

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 one-way flights from Toronto to Istanbul in October from $315

One-Way flights