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

Return flights

21 Oct - 24 Oct	WestJet
07 Oct - 21 Oct	WestJet
22 Oct - 25 Oct	WestJet
24 Oct - 31 Oct	WestJet
08 Oct - 15 Oct	WestJet
23 Oct - 30 Oct	WestJet
22 Oct - 30 Oct	WestJet
18 Oct - 21 Oct	WestJet
07 Oct - 10 Oct	WestJet
08 Oct - 10 Oct	WestJet
22 Oct - 05 Nov	WestJet
27 Oct - 03 Nov	WestJet
29 Oct - 13 Nov	WestJet
28 Oct - 11 Nov	WestJet
29 Oct - 12 Nov	WestJet
31 Oct - 07 Nov	WestJet
28 Oct - 18 Nov	WestJet
24 Oct - 06 Nov	WestJet
22 Oct - 18 Nov	WestJet
21 Oct - 04 Nov	WestJet

Also check the deals for one-way flights from Montreal to Las Vegas 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 Las Vegas in October from $169

Return flights