Direct flights from Sioux City to Denver SUX → DEN
United Airlines operates nonstop flights from Sioux City (SUX) to Denver (DEN). The nonstop flight takes around ~0h 56m, covering 465 miles (749 km). Updated 30 June 2026.
SUX
→
DEN
Round trip
1 adult
Economy
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Frequently asked questions
Is there a direct flight from Sioux City to Denver?
Yes, United Airlines operates nonstop flights from Sioux City (SUX) to Denver (DEN).
Which airlines fly direct from Sioux City to Denver?
United Airlines operates nonstop flights from Sioux City to Denver.
How long is the flight from Sioux City to Denver?
The nonstop flight from Sioux City to Denver takes ~0h 56m (approximately 749 km).