Cheapest one-way flights from Ontario to Las Vegas in May from $125

AirHint found the following cheapest one-way flights from Ontario (ONT) to Las Vegas (LAS) in May 2026 (see full year).

One-Way flights

10 May Southwest Airlines direct
07 May Southwest Airlines direct
29 May Southwest Airlines direct
30 May Southwest Airlines direct
30 May Southwest Airlines
05 May Southwest Airlines direct
05 May Southwest Airlines
09 May Southwest Airlines direct
09 May Southwest Airlines
23 May Southwest Airlines direct

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