Nonstop route
Boise to Denver nonstop
Yes — Southwest, United and Frontier fly BOI to DEN nonstop year-round — about 8× daily.
BOIBoise
✈
DENDenver
8× daily59 flights a week
Year-round59/wk Jun vs 57.6/wk Jan
$125–$275typical one-way · median $175
649miles nonstop
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Fares are what people actually paid: half of the 2,216 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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