Cheapest one-way flights from Ontario to Las Vegas in September from $88

Best time to book flights for Ontario (ONT) to Las Vegas (LAS) flights at AirHint

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

One-Way flights

17 Sep Southwest Airlines
10 Sep Southwest Airlines
07 Sep Southwest Airlines
12 Sep Southwest Airlines
04 Sep Southwest Airlines
04 Sep Southwest Airlines direct
12 Sep Southwest Airlines direct
28 Sep Southwest Airlines direct
28 Sep Southwest Airlines
24 Sep Southwest Airlines direct

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

Skyscanner

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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