Cheapest return flights from Ontario to Las Vegas in July from $56

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 July 2025 (see full year).

Return flights

12 Jul - 15 Jul Frontier Airlines direct
01 Jul - 08 Jul Frontier Airlines direct
16 Jul - 19 Jul Frontier Airlines direct
29 Jul - 13 Aug Frontier Airlines direct
16 Jul - 17 Jul Frontier Airlines direct
22 Jul - 28 Jul Frontier Airlines direct
05 Jul - 12 Jul Frontier Airlines direct
14 Jul - 17 Jul Southwest Airlines direct
09 Jul - 15 Jul Southwest Airlines direct
10 Jul - 15 Jul Southwest Airlines direct
02 Jul - 03 Jul Southwest Airlines direct
30 Jul - 01 Aug Frontier Airlines direct
25 Jul - 03 Aug Frontier Airlines direct
29 Jul - 01 Aug Southwest Airlines

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

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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