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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 December 2025 , January 2026

25 Dec - 08 Jan $ 259.00
ONT
Ontario
Frontier Airlines
1 STOPS
SJC
San Jose
SJC
San Jose
Frontier Airlines
1 STOPS
ONT
Ontario
Pick dates
25 Dec - 06 Jan $ 604.00
ONT
Ontario
Alaska Airlines
1 STOPS
SJC
San Jose
SJC
San Jose
Alaska Airlines
2 STOPS
ONT
Ontario
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26 Dec - 06 Jan $ 685.00
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

18 Dec - 31 Dec $ 606.00
ONT
Ontario
United Airlines
1 STOPS
SJC
San Jose
SJC
San Jose
United Airlines
1 STOPS
ONT
Ontario
Pick dates
18 Dec - 31 Dec $ 606.00
ONT
Ontario
United Airlines
1 STOPS
SJC
San Jose
SJC
San Jose
United Airlines
1 STOPS
ONT
Ontario
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26 Dec - 31 Dec $ 980.00
ONT
Ontario
Hawaiian Airlines
1 STOPS
SJC
San Jose
SJC
San Jose
Hawaiian Airlines
1 STOPS
ONT
Ontario
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One-way flights to San Jose from Ontario

6:00 AM - 5:06 PM
Frontier Airlines
1 Stops
12h 48m
ONT - SJC
$ 182
Kiwi
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1:40 PM - 7:30 PM
United Airlines
1 Stops
7h 36m
ONT - SJC
$ 255
Kiwi
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6:05 PM - 9:05 PM
Hawaiian Airlines
1 Stops
4h 54m
ONT - SJC
$ 542
Kiwi
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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.