Nonstop route
Chicago to Sioux Falls nonstop
Yes — United flies ORD to FSD nonstop year-round — about 4× daily.
ORDChicago
✈
FSDSioux Falls
4× daily26.8 flights a week
Year-round26.8/wk Jun vs 26.6/wk Jan
$150–$325typical one-way · median $225
462miles nonstop
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Fares are what people actually paid: half of the 694 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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