Nonstop route
Baltimore to Charleston nonstop
Yes — Southwest flies BWI to CHS nonstop year-round — about 4× daily.
BWIBaltimore
✈
CHSCharleston
4× daily24.7 flights a week
Year-round24.7/wk Jun vs 20.1/wk Jan
$125–$275typical one-way · median $175
472miles nonstop
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Fares are what people actually paid: half of the 2,008 tickets in the US DOT fare survey for this route sold between $125 and $275 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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