Nonstop route
Detroit to Seattle nonstop
Yes — Delta and Alaska fly DTW to SEA nonstop year-round — about 7× daily.
DTWDetroit
✈
SEASeattle
7× daily48.8 flights a week
Year-round48.8/wk Jun vs 30/wk Jan
$200–$375typical one-way · median $275
1,927miles nonstop
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Fares are what people actually paid: half of the 3,494 tickets in the US DOT fare survey for this route sold between $200 and $375 one way, median $275. 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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