Cheapest return flights from Las Vegas to Ontario in April from $71

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

Return flights

11 Apr - 13 Apr Frontier Airlines direct
10 Apr - 11 Apr Frontier Airlines direct
16 Apr - 18 Apr Frontier Airlines direct
11 Apr - 12 Apr Frontier Airlines direct
04 Apr - 08 Apr Frontier Airlines direct
07 Apr - 19 Apr Frontier Airlines direct
05 Apr - 09 Apr Frontier Airlines direct
06 Apr - 09 Apr Frontier Airlines direct
02 Apr - 13 Apr Frontier Airlines direct
25 Apr - 03 May Frontier Airlines direct
17 Apr - 25 Apr Frontier Airlines direct
26 Apr - 03 May Frontier Airlines direct

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

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