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Cheap flights from Ontario (ONT) to San Jose (SJC)

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0 Children (2~11)
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How to find the cheapest flight from Ontario (ONT) to San Jose (SJC)

How to find the cheapest flight from Ontario (ONT) to San Jose (SJC)
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How to find the cheapest flight from Ontario (ONT) to San Jose (SJC)
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How to find the cheapest flight from Ontario (ONT) to San Jose (SJC)
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Cheap flights from Ontario to San Jose in October , November 2026

23 Oct - 26 Nov $ 143.00
ONT
Ontario
Frontier Airlines
1 STOPS
SJC
San Jose
SJC
San Jose
Frontier Airlines
1 STOPS
ONT
Ontario
Pick dates
05 Oct - 06 Nov $ 292.00
ONT
Ontario
Frontier Airlines
1 STOPS
SJC
San Jose
SJC
San Jose
Frontier Airlines
1 STOPS
ONT
Ontario
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05 Oct - 06 Nov $ 718.00
ONT
Ontario
Alaska Airlines
1 STOPS
SJC
San Jose
SJC
San Jose
Alaska Airlines
1 STOPS
ONT
Ontario
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Last minute flights from Ontario to San Jose

23 Oct - 31 Oct $ 323.00
ONT
Ontario
Alaska Airlines
1 STOPS
SJC
San Jose
SJC
San Jose
Alaska Airlines
1 STOPS
ONT
Ontario
Pick dates
05 Oct - 31 Oct $ 450.00
ONT
Ontario
Alaska Airlines
1 STOPS
SJC
San Jose
SJC
San Jose
Alaska Airlines
2 STOPS
ONT
Ontario
Pick dates
05 Oct - 31 Oct $ 467.00
ONT
Ontario
Alaska Airlines
1 STOPS
SJC
San Jose
SJC
San Jose
Alaska Airlines
1 STOPS
ONT
Ontario
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One-way flights to San Jose from Ontario

8:00 AM - 11:42 AM
Frontier Airlines
1 Stops
5h 20m
ONT - SJC
$ 80
Kiwi
Pick dates
8:00 AM - 11:05 AM
Frontier Airlines
1 Stops
4h 43m
ONT - SJC
$ 223
Kiwi
Pick dates
8:00 AM - 11:05 AM
Frontier Airlines
1 Stops
4h 43m
ONT - SJC
$ 226
Kiwi
Pick dates

How to find the cheapest flight from Ontario (ONT) to San Jose (SJC)

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