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

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1 Adults (11+)
0 Children (2~11)
0 Infants (0~2)
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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)
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How to find the cheapest flight from Ontario (ONT) to Las Vegas (LAS)
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How to find the cheapest flight from Ontario (ONT) to Las Vegas (LAS)
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Cheap flights from Ontario to Las Vegas in July , August 2026

29 Jul - 27 Aug $ 278.00
ONT
Ontario
Frontier Airlines
DIRECT
LAS
Las Vegas
LAS
Las Vegas
Frontier Airlines
DIRECT
ONT
Ontario
Pick dates
29 Jul - 09 Aug $ 342.00
ONT
Ontario
Frontier Airlines
1 STOPS
LAS
Las Vegas
LAS
Las Vegas
Frontier Airlines
1 STOPS
ONT
Ontario
Pick dates
31 Jul - 06 Aug $ 357.00
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 Jul - 31 Jul $ 399.00
ONT
Ontario
Frontier Airlines
1 STOPS
LAS
Las Vegas
LAS
Las Vegas
Frontier Airlines
1 STOPS
ONT
Ontario
Pick dates
29 Jul - 31 Jul $ 432.00
ONT
Ontario
Frontier Airlines
DIRECT
LAS
Las Vegas
LAS
Las Vegas
Frontier Airlines
DIRECT
ONT
Ontario
Pick dates
25 Jul - 31 Jul $ 465.00
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

8:58 AM - 11:20 AM
Frontier Airlines
1 Stops
4h 12m
ONT - LAS
$ 210
Kiwi
Pick dates
3:40 PM - 3:40 PM
Frontier Airlines
0 Stops
1h 11m
ONT - LAS
$ 211
Kiwi
Pick dates
11:52 AM - 11:52 AM
Frontier Airlines
0 Stops
1h 10m
ONT - LAS
$ 221
Kiwi
Pick dates

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

Related info for your journey
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How to find the cheapest flight from Ontario (ONT) to Las Vegas (LAS)
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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.