Nonstop route
Indianapolis to Washington nonstop
Yes — Republic and PSA fly IND to DCA nonstop year-round — about 5× daily.
INDIndianapolis
✈
DCAWashington
5× daily38 flights a week
Year-round38/wk Jun vs 34.5/wk Jan
$125–$275typical one-way · median $175
500miles nonstop
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Fares are what people actually paid: half of the 2,327 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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