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

Return flights

01 Oct - 22 Oct	FrenchBee
06 Oct - 12 Oct	FrenchBee
15 Oct - 22 Oct	FrenchBee
05 Oct - 12 Oct	FrenchBee
01 Oct - 08 Oct	FrenchBee
01 Oct - 12 Oct	FrenchBee
15 Oct - 05 Nov	FrenchBee
05 Oct - 22 Oct	FrenchBee
03 Oct - 08 Oct	FrenchBee
03 Oct - 12 Oct	FrenchBee
12 Oct - 07 Nov	FrenchBee
06 Oct - 13 Oct	FrenchBee
26 Oct - 23 Nov	British Airways
26 Oct - 02 Nov	British Airways
28 Oct - 04 Nov	British Airways
29 Oct - 05 Nov	FrenchBee
22 Oct - 05 Nov	FrenchBee
13 Oct - 04 Nov	FrenchBee
29 Oct - 19 Nov	FrenchBee
08 Oct - 05 Nov	FrenchBee

Also check the deals for one-way flights from Montreal 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 Montreal to Istanbul in October from 497€

Return flights