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

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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 September , October 2026

19 Sep - 06 Oct $ 294.00
ONT
Ontario
Frontier Airlines
1 STOPS
SJC
San Jose
SJC
San Jose
Frontier Airlines
1 STOPS
ONT
Ontario
Pick dates
28 Sep - 05 Oct $ 299.00
ONT
Ontario
Frontier Airlines
1 STOPS
SJC
San Jose
SJC
San Jose
Frontier Airlines
1 STOPS
ONT
Ontario
Pick dates
20 Sep - 08 Oct $ 678.00
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

19 Sep - 01 Oct $ 400.00
ONT
Ontario
Alaska Airlines
1 STOPS
SJC
San Jose
SJC
San Jose
Alaska Airlines
1 STOPS
ONT
Ontario
Pick dates
26 Sep - 30 Sep $ 420.00
ONT
Ontario
United Airlines
1 STOPS
SJC
San Jose
SJC
San Jose
United Airlines
1 STOPS
ONT
Ontario
Pick dates
20 Sep - 30 Sep $ 698.00
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

8:00 AM - 11:05 AM
Frontier Airlines
1 Stops
4h 43m
ONT - SJC
$ 156
Kiwi
Pick dates
2:30 PM - 11:05 AM
Frontier Airlines
1 Stops
22h 13m
ONT - SJC
$ 165
Kiwi
Pick dates
8:00 AM - 11:05 AM
Frontier Airlines
1 Stops
4h 43m
ONT - SJC
$ 180
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.