Cheapest one-way flights from Las Vegas to Ontario in September from $115

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

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

One-Way flights

02 Sep Southwest Airlines direct
02 Sep Southwest Airlines
17 Sep Southwest Airlines direct
17 Sep Southwest Airlines
16 Sep Southwest Airlines direct
16 Sep Southwest Airlines
23 Sep Southwest Airlines direct
23 Sep Southwest Airlines
20 Sep Southwest Airlines direct
20 Sep Southwest Airlines

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