Nonstop route
St Louis to San Diego nonstop
Yes — Southwest flies STL to SAN nonstop year-round — about daily.
STLSt Louis
✈
SANSan Diego
daily8.9 flights a week
Year-round8.9/wk Jun vs 7.9/wk Jan
$200–$400typical one-way · median $275
1,557miles nonstop
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Fares are what people actually paid: half of the 832 tickets in the US DOT fare survey for this route sold between $200 and $400 one way, median $275. 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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