Cheapest return flights from Ontario to Las Vegas in January from $97

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

Return flights

10 Jan - 17 Jan Southwest Airlines direct
13 Jan - 13 Jan Southwest Airlines direct
08 Jan - 10 Jan Southwest Airlines direct
21 Jan - 27 Jan Southwest Airlines direct
14 Jan - 21 Jan Southwest Airlines direct
22 Jan - 24 Jan Southwest Airlines direct
31 Jan - 04 Feb Southwest Airlines direct
23 Jan - 24 Jan Southwest Airlines direct
15 Jan - 18 Jan Frontier Airlines direct
09 Jan - 11 Jan Frontier Airlines direct
16 Jan - 19 Jan Southwest Airlines direct

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

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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