Cheapest return flights from Ontario to Las Vegas in October from 57€

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

Return flights

21 Oct - 22 Oct Frontier Airlines direct
21 Oct - 21 Oct Frontier Airlines direct
03 Oct - 08 Oct Frontier Airlines direct
22 Oct - 29 Oct Frontier Airlines direct
06 Oct - 16 Oct Frontier Airlines direct
08 Oct - 15 Oct Frontier Airlines direct
07 Oct - 08 Oct Southwest Airlines direct
02 Oct - 08 Oct Southwest Airlines direct
07 Oct - 09 Oct Southwest Airlines direct
09 Oct - 11 Oct Southwest Airlines direct
29 Oct - 12 Nov Southwest Airlines direct
30 Oct - 03 Nov Southwest Airlines direct
29 Oct - 03 Nov Frontier Airlines direct
23 Oct - 06 Nov Southwest Airlines direct

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

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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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