Cheapest one-way flights from Ontario to Las Vegas in December from 33€

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

One-Way flights

16 Dec Southwest Airlines direct
13 Dec Southwest Airlines direct
03 Dec Southwest Airlines direct
15 Dec Southwest Airlines direct
18 Dec Southwest Airlines direct
14 Dec Frontier Airlines direct
30 Dec Frontier Airlines direct
23 Dec Frontier Airlines direct
31 Dec Southwest Airlines direct
25 Dec Southwest Airlines direct

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

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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