Cheapest one-way flights from Ontario to Las Vegas in April from $43

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

One-Way flights

08 Apr Frontier Airlines direct
30 Apr Southwest Airlines direct
30 Apr Southwest Airlines
21 Apr Southwest Airlines direct
21 Apr Southwest Airlines
02 Apr Southwest Airlines direct
27 Apr Southwest Airlines direct
27 Apr Southwest Airlines
16 Apr Southwest Airlines direct
16 Apr Southwest Airlines

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