Cheapest return flights from Ontario to Las Vegas in June from $40

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 June 2025 (see full year).

Return flights

10 Jun - 12 Jun Frontier Airlines direct
18 Jun - 20 Jun Frontier Airlines direct
18 Jun - 21 Jun Frontier Airlines direct
02 Jun - 12 Jun Frontier Airlines direct
07 Jun - 21 Jun Frontier Airlines direct
21 Jun - 23 Jun Frontier Airlines direct
14 Jun - 15 Jun Frontier Airlines direct
28 Jun - 30 Jun Frontier Airlines direct
19 Jun - 26 Jun Frontier Airlines direct
23 Jun - 24 Jun Frontier Airlines direct
30 Jun - 03 Jul Southwest Airlines
24 Jun - 12 Jul Southwest Airlines
28 Jun - 02 Jul Southwest Airlines
27 Jun - 06 Jul Southwest Airlines
25 Jun - 13 Jul Southwest Airlines

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

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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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