Cheapest return flights from Ontario to Las Vegas in March from $53

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

Return flights

05 Mar - 07 Mar Frontier Airlines direct
01 Mar - 06 Mar Frontier Airlines direct
04 Mar - 11 Mar Frontier Airlines direct
12 Mar - 16 Mar Frontier Airlines direct
02 Mar - 04 Mar Frontier Airlines direct
25 Mar - 01 Apr Frontier Airlines direct
31 Mar - 07 Apr Frontier Airlines direct
25 Mar - 28 Mar Frontier Airlines direct
24 Mar - 25 Mar Frontier Airlines direct
03 Mar - 18 Mar Frontier Airlines direct
12 Mar - 17 Mar Frontier Airlines direct
11 Mar - 18 Mar Frontier Airlines direct
31 Mar - 04 Apr Frontier Airlines direct
30 Mar - 17 Apr Frontier Airlines direct
27 Mar - 03 Apr Frontier Airlines direct
28 Mar - 02 Apr Southwest Airlines
30 Mar - 02 Apr Southwest Airlines
26 Mar - 01 Apr Alaska Airlines

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

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