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

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

One-Way flights

25 Apr Southwest Airlines direct
25 Apr Southwest Airlines
02 Apr Southwest Airlines direct
02 Apr Southwest Airlines
13 Apr Southwest Airlines direct
28 Apr Southwest Airlines direct
28 Apr Southwest Airlines
15 Apr Southwest Airlines direct
15 Apr Southwest Airlines
06 Apr Southwest Airlines direct

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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