AirHint found the following cheapest one-way flights from Montreal (YUL) to Toronto (YYZ) in October 2025 (see full year).

One-Way flights

15 Oct	WestJet	direct
01 Oct	WestJet	direct
20 Oct	WestJet	direct
30 Oct	WestJet	direct
24 Oct	WestJet	direct
02 Oct	WestJet	direct
23 Oct	WestJet	direct
11 Oct	WestJet	direct
12 Oct	WestJet	direct
16 Oct	WestJet	direct

Also check the deals for return flights from Montreal to Toronto 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 Montreal to Toronto in October from $87

One-Way flights