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

Return flights

15 Oct - 08 Nov	TAP
06 Oct - 16 Oct	Icelandair
01 Oct - 13 Oct	WestJet
06 Oct - 14 Oct	Porter Airlines (Canada) Ltd
04 Oct - 11 Oct	Icelandair
17 Oct - 08 Nov	Air Transat
19 Oct - 08 Nov	Air Transat
17 Oct - 13 Nov	Air Transat
26 Oct - 15 Nov	Air Transat
18 Oct - 08 Nov	Air Transat
21 Oct - 15 Nov	Air Transat
01 Oct - 09 Oct	WestJet
07 Oct - 14 Oct	WestJet
07 Oct - 22 Oct	WestJet
07 Oct - 20 Oct	WestJet
06 Oct - 20 Oct	WestJet
05 Oct - 14 Oct	WestJet
16 Oct - 08 Nov	Air Transat
14 Oct - 08 Nov	Air Transat
22 Oct - 15 Nov	Flair Airlines

Also check the deals for one-way 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 return flights from Toronto to Istanbul in October from $597

Return flights