Nonstop route
Santa Rosa to San Diego nonstop
Yes — Southwest flies STS to SAN nonstop year-round — about 4× daily.
STSSanta Rosa
✈
SANSan Diego
4× daily26.8 flights a week
Year-round26.8/wk Jun vs 11.5/wk Jan
$125–$250typical one-way · median $175
508miles nonstop
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Fares are what people actually paid: half of the 884 tickets in the US DOT fare survey for this route sold between $125 and $250 one way, median $175. 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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