Cheapest return flights from Ontario to Las Vegas in January from $84

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

Return flights

31 Jan - 01 Feb Frontier Airlines direct
31 Jan - 03 Feb Frontier Airlines direct
30 Jan - 31 Jan Frontier Airlines direct
31 Jan - 02 Feb Frontier Airlines direct
31 Jan - 31 Jan Frontier Airlines direct
28 Jan - 31 Jan Frontier Airlines direct
25 Jan - 31 Jan Frontier Airlines direct
27 Jan - 03 Feb Frontier Airlines direct
26 Jan - 01 Feb Frontier Airlines direct
28 Jan - 04 Feb Frontier Airlines direct
25 Jan - 01 Feb Frontier Airlines direct
29 Jan - 31 Jan Frontier Airlines direct
29 Jan - 30 Jan Frontier Airlines direct
29 Jan - 05 Feb Frontier Airlines direct
25 Jan - 30 Jan Frontier Airlines direct
25 Jan - 26 Jan Frontier Airlines direct
27 Jan - 04 Feb Southwest Airlines
27 Jan - 04 Feb Southwest Airlines direct

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

Powered by

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.

Book a cheap hotel in Las Vegas

Cheap car rent in Las Vegas

Feel free to contact us with any feedback or request another flight research.