Cheapest return flights from Ontario to Las Vegas in August from $250

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

Return flights

05 Aug - 05 Aug Southwest Airlines
25 Aug - 27 Aug Southwest Airlines
12 Aug - 18 Aug Southwest Airlines
23 Aug - 26 Aug Southwest Airlines
03 Aug - 08 Aug Southwest Airlines
07 Aug - 09 Aug Southwest Airlines
09 Aug - 10 Aug Southwest Airlines
02 Aug - 09 Aug Southwest Airlines
06 Aug - 13 Aug Alaska Airlines
11 Aug - 12 Aug Alaska Airlines

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

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