Nonstop route
St Louis to Denver nonstop
Yes — Southwest, United and Frontier fly STL to DEN nonstop year-round — about 12× daily.
STLSt Louis
✈
DENDenver
12× daily82.8 flights a week
Year-round82.8/wk Jun vs 56.2/wk Jan
$125–$250typical one-way · median $175
770miles nonstop
Affiliate disclosure
Ready to compare fares?
Fares are what people actually paid: half of the 4,801 tickets in the US DOT fare survey for this route sold between $125 and $250 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.
Nonstop Scout may earn revenue from outbound flight-search links.