Nonstop route
Washington to Seattle nonstop
Yes — Alaska and Delta fly DCA to SEA nonstop year-round — about 3× daily.
DCAWashington
✈
SEASeattle
3× daily20.8 flights a week
Year-round20.8/wk Jun vs 19.9/wk Jan
$225–$425typical one-way · median $325
2,329miles nonstop
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Fares are what people actually paid: half of the 2,536 tickets in the US DOT fare survey for this route sold between $225 and $425 one way, median $325. 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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