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Cheap flights from Ontario (ONT) to Phoenix (PHX)

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0 Children (2~11)
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How to find the cheapest flight from Ontario (ONT) to Phoenix (PHX)

How to find the cheapest flight from Ontario (ONT) to Phoenix (PHX)
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How to find the cheapest flight from Ontario (ONT) to Phoenix (PHX)
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How to find the cheapest flight from Ontario (ONT) to Phoenix (PHX)
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Cheap flights from Ontario to Phoenix in September , October 2026

30 Sep - 29 Oct $ 143.00
ONT
Ontario
Frontier Airlines
1 STOPS
PHX
Phoenix
PHX
Phoenix
Frontier Airlines
1 STOPS
ONT
Ontario
Pick dates
18 Sep - 05 Oct $ 221.00
ONT
Ontario
Frontier Airlines
1 STOPS
PHX
Phoenix
PHX
Phoenix
Frontier Airlines
1 STOPS
ONT
Ontario
Pick dates
17 Sep - 09 Oct $ 338.00
ONT
Ontario
Frontier Airlines
1 STOPS
PHX
Phoenix
PHX
Phoenix
Frontier Airlines
1 STOPS
ONT
Ontario
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Last minute flights from Ontario to Phoenix

29 Sep - 30 Sep $ 125.00
ONT
Ontario
Frontier Airlines
1 STOPS
PHX
Phoenix
PHX
Phoenix
Frontier Airlines
1 STOPS
ONT
Ontario
Pick dates
17 Sep - 30 Sep $ 221.00
ONT
Ontario
Frontier Airlines
1 STOPS
PHX
Phoenix
PHX
Phoenix
Frontier Airlines
1 STOPS
ONT
Ontario
Pick dates
18 Sep - 30 Sep $ 524.00
ONT
Ontario
United Airlines
1 STOPS
PHX
Phoenix
PHX
Phoenix
United Airlines
1 STOPS
ONT
Ontario
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One-way flights to Phoenix from Ontario

2:30 PM - 5:36 PM
Frontier Airlines
1 Stops
4h 33m
ONT - PHX
$ 63
Kiwi
Pick dates
8:00 AM - 10:58 AM
Frontier Airlines
1 Stops
4h 22m
ONT - PHX
$ 159
Kiwi
Pick dates
2:30 PM - 5:36 PM
Frontier Airlines
1 Stops
4h 33m
ONT - PHX
$ 159
Kiwi
Pick dates

How to find the cheapest flight from Ontario (ONT) to Phoenix (PHX)

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