Cheapest one-way flights from Ontario to Las Vegas in August from $35

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

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

One-Way flights

05 Aug Frontier Airlines direct
06 Aug Frontier Airlines direct
15 Aug Frontier Airlines direct
01 Aug Frontier Airlines direct
08 Aug Frontier Airlines direct
04 Aug Frontier Airlines direct
03 Aug Southwest Airlines direct
03 Aug Southwest Airlines
23 Aug Southwest Airlines direct
23 Aug Southwest Airlines

Also check the deals for return 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.

Book a cheap hotel in Las Vegas

Cheap car rent in Las Vegas