Cheapest return flights from Ontario to Las Vegas in October from $230

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 October 2025 (see full year).

Return flights

16 Oct - 17 Oct Southwest Airlines
07 Oct - 14 Oct Southwest Airlines
16 Oct - 18 Oct Southwest Airlines
17 Oct - 20 Oct Southwest Airlines
03 Oct - 04 Oct Southwest Airlines
07 Oct - 08 Oct Southwest Airlines
27 Oct - 30 Oct Southwest Airlines
06 Oct - 09 Oct Southwest Airlines
29 Oct - 31 Oct Southwest Airlines
23 Oct - 01 Nov Southwest Airlines
11 Oct - 15 Oct Southwest Airlines

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

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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