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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

30 Apr - 15 May $ 713.00
ONT
Ontario
Frontier Airlines
1 STOPS
SJC
San Jose
SJC
San Jose
Frontier Airlines
1 STOPS
ONT
Ontario
Pick dates
29 Apr - 10 May $ 1,168.00
ONT
Ontario
Alaska Airlines
1 STOPS
SJC
San Jose
SJC
San Jose
Alaska Airlines
1 STOPS
ONT
Ontario
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27 Apr - 15 May $ 1,354.00
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

29 Apr - 30 Apr $ 783.00
ONT
Ontario
United Airlines
1 STOPS
SJC
San Jose
SJC
San Jose
United Airlines
1 STOPS
ONT
Ontario
Pick dates
29 Apr - 30 Apr $ 783.00
ONT
Ontario
United Airlines
1 STOPS
SJC
San Jose
SJC
San Jose
United Airlines
1 STOPS
ONT
Ontario
Pick dates
27 Apr - 30 Apr $ 1,453.00
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

1:34 PM - 7:25 PM
United Airlines
1 Stops
7h 33m
ONT - SJC
$ 392
Kiwi
Pick dates
1:38 PM - 7:25 PM
United Airlines
1 Stops
7h 29m
ONT - SJC
$ 393
Kiwi
Pick dates
5:56 PM - 9:07 PM
Alaska Airlines
1 Stops
5h 3m
ONT - SJC
$ 727
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.