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

Return flights

07 Oct - 20 Oct	Flair Airlines
03 Oct - 10 Oct	Icelandair
01 Oct - 11 Oct	Air Transat
05 Oct - 12 Oct	Flair Airlines
03 Oct - 08 Oct	Porter Airlines (Canada) Ltd
02 Oct - 12 Oct	Air Transat
01 Oct - 10 Oct	WestJet
01 Oct - 05 Oct	WestJet
07 Oct - 11 Nov	Flair Airlines
06 Oct - 15 Oct	British Airways
01 Oct - 15 Oct	British Airways
14 Oct - 04 Nov	British Airways
01 Oct - 14 Nov	Air Canada
03 Oct - 07 Nov	WestJet
26 Oct - 03 Nov	Air Canada
04 Oct - 07 Nov	Air Canada
09 Oct - 03 Nov	Air Canada
03 Oct - 06 Nov	Air Canada
21 Oct - 06 Nov	Air Canada
17 Oct - 10 Nov	British Airways

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 506€

Return flights