Earn point on your loyalty program!arrow arc left

Cheap flights from Ontario (ONT) to Las Vegas (LAS)

Know your dates, get live prices in seconds
airplane logo

pin logo

calendar
Departure
calendar backward
Return
airplane logo
1 Adults (11+)
0 Children (2~11)
0 Infants (0~2)
Save up to 31%
Book Flight + Hotel at the same time

How to find the cheapest flight from Ontario (ONT) to Las Vegas (LAS)

How to find the cheapest flight from Ontario (ONT) to Las Vegas (LAS)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.
How to find the cheapest flight from Ontario (ONT) to Las Vegas (LAS)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.
How to find the cheapest flight from Ontario (ONT) to Las Vegas (LAS)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.

Cheap flights from Ontario to Las Vegas in June , July 2026

28 Jun - 29 Jul $ 236.00
ONT
Ontario
Frontier Airlines
DIRECT
LAS
Las Vegas
LAS
Las Vegas
Frontier Airlines
DIRECT
ONT
Ontario
Pick dates
28 Jun - 08 Jul $ 314.00
ONT
Ontario
Frontier Airlines
DIRECT
LAS
Las Vegas
LAS
Las Vegas
Frontier Airlines
DIRECT
ONT
Ontario
Pick dates
29 Jun - 07 Jul $ 323.00
ONT
Ontario
Frontier Airlines
DIRECT
LAS
Las Vegas
LAS
Las Vegas
Frontier Airlines
DIRECT
ONT
Ontario
Pick dates

Last minute flights from Ontario to Las Vegas

28 Jun - 30 Jun $ 346.00
ONT
Ontario
Frontier Airlines
DIRECT
LAS
Las Vegas
LAS
Las Vegas
Frontier Airlines
DIRECT
ONT
Ontario
Pick dates
29 Jun - 30 Jun $ 357.00
ONT
Ontario
Frontier Airlines
DIRECT
LAS
Las Vegas
LAS
Las Vegas
Frontier Airlines
DIRECT
ONT
Ontario
Pick dates
30 Jun - 30 Jun $ 357.00
ONT
Ontario
Frontier Airlines
DIRECT
LAS
Las Vegas
LAS
Las Vegas
Frontier Airlines
DIRECT
ONT
Ontario
Pick dates

One-way flights to Las Vegas from Ontario

11:58 AM - 11:58 AM
Frontier Airlines
0 Stops
1h 8m
ONT - LAS
$ 173
Kiwi
Pick dates
11:58 AM - 11:58 AM
Frontier Airlines
0 Stops
1h 8m
ONT - LAS
$ 179
Kiwi
Pick dates
1:33 PM - 1:33 PM
Frontier Airlines
0 Stops
1h 11m
ONT - LAS
$ 179
Kiwi
Pick dates

How to find the cheapest flight from Ontario (ONT) to Las Vegas (LAS)

Related info for your journey
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.
How to find the cheapest flight from Ontario (ONT) to Las Vegas (LAS)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.
How to find the cheapest flight from Ontario (ONT) to Las Vegas (LAS)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.