Cheapest one-way flights from Ontario to Las Vegas in March from $27

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

One-Way flights

12 Mar Frontier Airlines direct
10 Mar Frontier Airlines direct
06 Mar Frontier Airlines direct
25 Mar Frontier Airlines direct
20 Mar Frontier Airlines direct
27 Mar Frontier Airlines direct

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

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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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