Cheapest one-way flights from Las Vegas to Ontario in May from $26

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 May 2025 (see full year).

One-Way flights

14 May Frontier Airlines direct
28 May Frontier Airlines direct
13 May Frontier Airlines direct
21 May Frontier Airlines direct
27 May Frontier Airlines direct
11 May Frontier Airlines direct
09 May Frontier Airlines direct
25 May Frontier Airlines direct
29 May Frontier Airlines direct
08 May Frontier Airlines direct

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

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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