Cheapest one-way flights from Ontario to Las Vegas in October from $19

AirHint found the following cheapest one-way flights from Ontario (ONT) to Las Vegas (LAS) in October 2025 (see full year).

One-Way flights

29 Oct Frontier Airlines direct
31 Oct Frontier Airlines
31 Oct Frontier Airlines direct
30 Oct Frontier Airlines direct
27 Oct Frontier Airlines direct
26 Oct Frontier Airlines direct
25 Oct Frontier Airlines direct
24 Oct Frontier Airlines direct

Also check the deals for return flights from Ontario to Las Vegas in October.

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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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