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

Return flights

21 Oct - 25 Nov	WestJet
20 Oct - 17 Nov	WestJet
20 Oct - 20 Nov	WestJet
27 Oct - 25 Nov	Lufthansa
21 Oct - 23 Nov	Condor
20 Oct - 15 Nov	WestJet
21 Oct - 15 Nov	WestJet
29 Oct - 27 Nov	Air Canada
27 Oct - 17 Nov	Air Canada
25 Oct - 16 Nov	Air Transat
21 Oct - 28 Oct	WestJet
21 Oct - 30 Oct	WestJet
20 Oct - 27 Oct	WestJet
22 Oct - 29 Oct	WestJet
20 Oct - 26 Oct	WestJet
23 Oct - 30 Oct	Air Transat
22 Oct - 26 Oct	Air Transat
24 Oct - 28 Oct	Air Transat
23 Oct - 27 Oct	TAP
23 Oct - 26 Oct	TAP

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 623€

Return flights