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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 August , September 2026

27 Aug - 01 Sep $ 567.00
ONT
Ontario
United Airlines
1 STOPS
SJC
San Jose
SJC
San Jose
United Airlines
1 STOPS
ONT
Ontario
Pick dates
29 Aug - 09 Sep $ 678.00
ONT
Ontario
Alaska Airlines
2 STOPS
SJC
San Jose
SJC
San Jose
Alaska Airlines
2 STOPS
ONT
Ontario
Pick dates
28 Aug - 05 Sep $ 1,168.00
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

30 Aug - 31 Aug $ 645.00
ONT
Ontario
United Airlines
1 STOPS
SJC
San Jose
SJC
San Jose
United Airlines
1 STOPS
ONT
Ontario
Pick dates
28 Aug - 31 Aug $ 646.00
ONT
Ontario
United Airlines
1 STOPS
SJC
San Jose
SJC
San Jose
United Airlines
1 STOPS
ONT
Ontario
Pick dates
28 Aug - 31 Aug $ 1,333.00
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

1:18 PM - 7:16 PM
United Airlines
1 Stops
7h 39m
ONT - SJC
$ 323
Kiwi
Pick dates
5:00 AM - 11:29 AM
United Airlines
1 Stops
8h 8m
ONT - SJC
$ 323
Kiwi
Pick dates
1:18 PM - 7:16 PM
United Airlines
1 Stops
7h 39m
ONT - SJC
$ 325
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.