Cheapest return flights from Ontario to Las Vegas in December from $77

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

Return flights

17 Dec - 17 Dec Frontier Airlines direct
14 Dec - 15 Dec Frontier Airlines direct
15 Dec - 16 Dec Frontier Airlines direct
15 Dec - 18 Dec Frontier Airlines direct
16 Dec - 17 Dec Frontier Airlines direct
16 Dec - 16 Dec Frontier Airlines direct
16 Dec - 18 Dec Frontier Airlines direct
15 Dec - 17 Dec Frontier Airlines direct
14 Dec - 17 Dec Frontier Airlines direct
25 Dec - 06 Jan Frontier Airlines direct
25 Dec - 31 Dec Frontier Airlines direct
25 Dec - 01 Jan Frontier Airlines direct
29 Dec - 01 Jan Frontier Airlines direct
30 Dec - 05 Jan Frontier Airlines direct
30 Dec - 06 Jan Frontier Airlines direct
30 Dec - 01 Jan Frontier Airlines direct
23 Dec - 12 Jan Frontier Airlines direct
25 Dec - 04 Jan Frontier Airlines direct
29 Dec - 02 Jan Frontier Airlines direct
31 Dec - 03 Jan Frontier Airlines direct

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

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.