Direct Flights from Denver to Sioux City
Nonstop service from DEN to SUX on United. Here's the schedule at a glance — plus what to do once you land.
Airlines
United
Nonstop flights
~1/day
Distance
466 mi
Days operated
Daily (all week)
About Sioux City
Sioux City is a city in Woodbury and Plymouth counties in the U.S. state of Iowa. The population was 85,797 at the 2020 census, and was estimated at 86,875 in 2024, making it the fourth-most populous city in Iowa. The county seat of Woodbury County, Sioux City is the primary city of the five-county Sioux City metropolitan area, which had 144,334 residents on the 2020 census.
Top things to do in Sioux City
- The Cathedral of the Epiphany is a cathedral and a parish church located in Sioux City, Iowa, United States. It is the seat of the Diocese of Sioux City.
- The National Music Museum: America's Shrine to Music & Center for Study of the History of Musical Instruments (NMM) is a musical instrument museum in Vermillion, South Dakota, United States.
- The John G. Neihardt State Historic Site, also known as the Neihardt Center, is located in Bancroft, Nebraska, United States and features museum exhibits about Nebraska Poet Laureate John Neihardt.
- Lewis and Clark State Park is a state park in the US state of Iowa consisting of 176 acres (71 ha) located in Monona County.
- Stone State Park is a state park in Iowa, United States, located in the bluffs and ravines adjacent to the Big Sioux River.
- Ponca State Park is a public recreation area located on the banks of the Missouri River four miles (6.4 km) north of Ponca, Nebraska, in the northeastern corner of the state.
- The Sergeant Floyd Monument is a monument on the Missouri River at Floyd's Bluff in Sioux City, Iowa, US.
- Prentis Park is a city park in Vermillion, South Dakota. It is a rectangular 20-acre (8.1 ha) park located on the block bounded by Plum Street, Main Street, Clark Street, and Prentis Avenue.
- Ravine Park is a community park located in Lake Bluff, Illinois. Measuring roughly 14 acres (5.7 ha) in area, it is dominated by a ravine formed by an ephemeral stream that flows after heavy rainfall and consists of a se…
- The Ionia Volcano is a heat-producing bluff located east of Newcastle, Nebraska, although it has commonly been mistaken for an active volcano.
- The W. H. Over Museum, in Vermillion, South Dakota is the oldest museum in the state of South Dakota.
- The Sioux City Public Museum is a museum about the history and culture of Sioux City, Iowa.
Attraction descriptions from Wikipedia (CC BY-SA); place data from Wikidata (CC0).
Planning a trip to Sioux City
- Best time to visit
- The best time to visit Sioux City is April–May and September–October, when daytime highs are a comfortable 61–81°F.
- How long to stay
- Sioux City rewards a longer visit — a full week lets you explore its many sights, from Cathedral of the Epiphany (Sioux City, Iowa), National Music Museum, and John G. Neihardt State Historic Site and beyond.
Frequently asked questions
- Is there a direct flight from Denver to Sioux City?
- Yes — you can fly nonstop from Denver (DEN) to Sioux City (SUX) on United.
- Which airlines fly nonstop from Denver to Sioux City?
- United flies nonstop between Denver (DEN) and Sioux City (SUX).
- How many nonstop flights are there from Denver to Sioux City?
- There is about 1 nonstop departure per day (roughly 7 per week) from Denver to Sioux City.
- How far is Sioux City from Denver?
- Sioux City is about 466 miles from Denver by air.
- What is there to do in Sioux City?
- Popular things to do include Cathedral of the Epiphany (Sioux City, Iowa), National Music Museum, John G. Neihardt State Historic Site, Lewis and Clark State Park (Iowa), and more.
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