Nonstop route
Dallas-Fort Worth to St. Louis nonstop
Yes — American and Frontier fly DFW to STL nonstop year-round — about 8× daily.
DFWDallas-Fort Worth
✈
STLSt. Louis
8× daily52.7 flights a week
Year-round52.7/wk Jun vs 34.3/wk Jan
$150–$325typical one-way · median $225
550miles nonstop
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Fares are what people actually paid: half of the 2,201 tickets in the US DOT fare survey for this route sold between $150 and $325 one way, median $225. 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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