FFL Helper
San Francisco SFO
$92
ONT → SFO · Frontier Airlines
FFL Helper / Ontario / San Jose
ONT → SJC
Ontario to San Jose
Compare one-way fares for flights from Ontario to San Jose.
Lowest fare
$92
Distance
371 mi
Flight time
1h 27m
Airports
ONT–SFO
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By month: August 2026 from $172 · September 2026 from $92
Price calendar
August 2026
From $172
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$172
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September 2026
From $92
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Upcoming dates
San Jose SJC
$172
ONT → SJC · Frontier Airlines
About this route
This calendar shows dated one-way fares from Ontario to San Jose. Use it to see which days are cheaper before you search tickets.
Flight time and airport codes on this page are for the sample itinerary we have on file. Always confirm the live routing when you book Ontario to San Jose.