Cheapest one-way flights from Ontario to Las Vegas in January from $19

AirHint found the following cheapest one-way flights from Ontario (ONT) to Las Vegas (LAS) in January 2026 (see full year).

One-Way flights

21 Jan Frontier Airlines direct
20 Jan Frontier Airlines direct
26 Jan Frontier Airlines direct
12 Jan Frontier Airlines direct
13 Jan Frontier Airlines direct
09 Jan Frontier Airlines direct
19 Jan Frontier Airlines direct
22 Jan Frontier Airlines direct
24 Jan Frontier Airlines direct
23 Jan Frontier Airlines direct

Also check the deals for return flights from Ontario to Las Vegas in January.

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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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