Cheapest one-way flights from Las Vegas to Ontario in April from $44

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

One-Way flights

30 Apr Frontier Airlines direct
20 Apr Frontier Airlines direct
21 Apr Frontier Airlines direct
23 Apr Frontier Airlines direct
22 Apr Frontier Airlines direct
14 Apr Southwest Airlines direct
12 Apr Frontier Airlines direct
05 Apr Frontier Airlines direct
28 Apr Southwest Airlines
29 Apr Southwest Airlines

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

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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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