Nonstop route
Columbus to Washington nonstop
Yes — Southwest flies CMH to DCA nonstop year-round — about 6× daily.
CMHColumbus
✈
DCAWashington
6× daily39.7 flights a week
Year-round39.7/wk Jun vs 34.5/wk Jan
$100–$250typical one-way · median $150
323miles nonstop
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Fares are what people actually paid: half of the 1,780 tickets in the US DOT fare survey for this route sold between $100 and $250 one way, median $150. 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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