Cheapest return flights from Ontario to Las Vegas in March from $49

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

Return flights

03 Mar - 04 Mar Frontier Airlines direct
02 Mar - 04 Mar Frontier Airlines direct
08 Mar - 10 Mar Frontier Airlines direct
07 Mar - 09 Mar Frontier Airlines direct
06 Mar - 08 Mar Frontier Airlines direct
06 Mar - 09 Mar Frontier Airlines direct
11 Mar - 24 Mar Frontier Airlines direct
09 Mar - 14 Mar Frontier Airlines direct
22 Mar - 25 Mar Frontier Airlines direct
13 Mar - 17 Mar Frontier Airlines direct
28 Mar - 03 Apr Frontier Airlines direct
30 Mar - 01 Apr Southwest Airlines
30 Mar - 03 Apr Southwest Airlines
28 Mar - 07 Apr Southwest Airlines

Also check the deals for one-way flights from Ontario to Las Vegas in March.

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