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

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

Return flights

23 Jun - 24 Jun Southwest Airlines
01 Jun - 10 Jun Southwest Airlines
27 Jun - 30 Jun Southwest Airlines
22 Jun - 24 Jun Southwest Airlines
11 Jun - 16 Jun Southwest Airlines
01 Jun - 06 Jun Southwest Airlines
13 Jun - 16 Jun Southwest Airlines
12 Jun - 13 Jun Southwest Airlines
12 Jun - 15 Jun Southwest Airlines
21 Jun - 23 Jun 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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