Nonstop route
San Jose to Ontario nonstop
Yes — Southwest flies SJC to ONT nonstop year-round — about 4× daily.
SJCSan Jose
✈
ONTOntario
4× daily26.4 flights a week
Year-round26.4/wk Jun vs 22.8/wk Jan
$75–$250typical one-way · median $125
333miles nonstop
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Fares are what people actually paid: half of the 2,639 tickets in the US DOT fare survey for this route sold between $75 and $250 one way, median $125. That survey runs a couple of quarters behind, so treat it as the shape of the route's pricing rather than today's quote.
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