Cheapest return flights from Ontario to Las Vegas in October from $73

AirHint found the following cheapest return flights from Ontario (ONT) to Las Vegas (LAS) in October 2025 (see full year).

Return flights

23 Oct - 27 Oct Frontier Airlines direct
13 Oct - 16 Oct Frontier Airlines direct
16 Oct - 18 Oct Frontier Airlines direct
11 Oct - 11 Oct Frontier Airlines direct
13 Oct - 20 Oct Frontier Airlines direct
21 Oct - 28 Oct Frontier Airlines direct
04 Oct - 11 Oct Frontier Airlines direct
18 Oct - 20 Oct Frontier Airlines direct
28 Oct - 30 Oct Frontier Airlines direct
14 Oct - 16 Oct Frontier Airlines direct
31 Oct - 03 Nov Frontier Airlines direct
30 Oct - 05 Nov Southwest Airlines direct
30 Oct - 06 Nov Southwest Airlines direct
29 Oct - 03 Nov Southwest Airlines direct
31 Oct - 02 Nov Frontier Airlines direct
31 Oct - 08 Nov Southwest Airlines direct
24 Oct - 01 Nov Southwest Airlines direct
24 Oct - 09 Nov Southwest Airlines direct

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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