Cheapest one-way flights from Ontario to Las Vegas in March from $54

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

One-Way flights

03 Mar Southwest Airlines direct
16 Mar Frontier Airlines direct
21 Mar Frontier Airlines direct
01 Mar Southwest Airlines direct
30 Mar Southwest Airlines direct
30 Mar Southwest Airlines
11 Mar Southwest Airlines direct
11 Mar Southwest Airlines
31 Mar Southwest Airlines direct
31 Mar Southwest Airlines

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

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