Cheapest return flights from Las Vegas to Ontario in May from $29

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

AirHint found the following cheapest return flights from Las Vegas (LAS) to Ontario (ONT) in May 2025 (see full year).

Return flights

06 May - 08 May Frontier Airlines direct
09 May - 09 May Frontier Airlines direct
08 May - 08 May Frontier Airlines direct
01 May - 05 May Frontier Airlines direct
02 May - 07 May Frontier Airlines direct
15 May - 17 May Frontier Airlines direct
07 May - 11 May Frontier Airlines direct
21 May - 24 May Frontier Airlines direct
16 May - 20 May Frontier Airlines direct
18 May - 25 May Frontier Airlines direct
15 May - 02 Jun Frontier Airlines direct
27 May - 01 Jun Southwest Airlines

Also check the deals for one-way 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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