Cheapest return flights from Ontario to Las Vegas in August from $77

Best time to book flights for Ontario (ONT) to Las Vegas (LAS) flights at AirHint

AirHint found the following cheapest return flights from Ontario (ONT) to Las Vegas (LAS) in August 2025 (see full year).

Return flights

02 Aug - 05 Aug Frontier Airlines direct
12 Aug - 14 Aug Frontier Airlines direct
10 Aug - 14 Aug Frontier Airlines direct
16 Aug - 18 Aug Frontier Airlines direct
07 Aug - 12 Aug Frontier Airlines direct
03 Aug - 04 Aug Frontier Airlines direct
07 Aug - 16 Aug Frontier Airlines direct
15 Aug - 18 Aug Frontier Airlines direct
07 Aug - 11 Aug Frontier Airlines direct
08 Aug - 15 Aug Frontier Airlines direct
30 Aug - 06 Sep Southwest Airlines direct
31 Aug - 03 Sep Southwest Airlines
31 Aug - 18 Sep Southwest Airlines

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

Skyscanner

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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