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

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0 Children (2~11)
0 Infants (0~2)
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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 April , May 2026

27 Apr - 11 May $ 238.00
ONT
Ontario
Frontier Airlines
1 STOPS
SJC
San Jose
SJC
San Jose
Frontier Airlines
1 STOPS
ONT
Ontario
Pick dates
14 Apr - 06 May $ 692.00
ONT
Ontario
Alaska Airlines
1 STOPS
SJC
San Jose
SJC
San Jose
Alaska Airlines
1 STOPS
ONT
Ontario
Pick dates
15 Apr - 05 May $ 817.00
ONT
Ontario
Alaska Airlines
1 STOPS
SJC
San Jose
SJC
San Jose
Alaska Airlines
1 STOPS
ONT
Ontario
Pick dates

Last minute flights from Ontario to San Jose

27 Apr - 01 May $ 305.00
ONT
Ontario
Frontier Airlines
1 STOPS
SJC
San Jose
SJC
San Jose
Frontier Airlines
1 STOPS
ONT
Ontario
Pick dates
14 Apr - 30 Apr $ 750.00
ONT
Ontario
Alaska Airlines
1 STOPS
SJC
San Jose
SJC
San Jose
Alaska Airlines
1 STOPS
ONT
Ontario
Pick dates
15 Apr - 30 Apr $ 977.00
ONT
Ontario
Alaska Airlines
1 STOPS
SJC
San Jose
SJC
San Jose
Alaska Airlines
1 STOPS
ONT
Ontario
Pick dates

One-way flights to San Jose from Ontario

11:44 AM - 4:07 PM
Frontier Airlines
1 Stops
6h
ONT - SJC
$ 119
Kiwi
Pick dates
1:34 PM - 7:25 PM
United Airlines
1 Stops
7h 33m
ONT - SJC
$ 289
Kiwi
Pick dates
5:49 PM - 9:08 PM
Alaska Airlines
1 Stops
5h 10m
ONT - SJC
$ 566
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.