Nonstop route
St Louis to Dallas nonstop
Yes — Southwest flies STL to DAL nonstop year-round — about 6× daily.
STLSt Louis
✈
DALDallas
6× daily39.7 flights a week
Year-round39.7/wk Jun vs 30.9/wk Jan
$125–$300typical one-way · median $175
546miles nonstop
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Fares are what people actually paid: half of the 2,956 tickets in the US DOT fare survey for this route sold between $125 and $300 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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