$168 Find Cheap Flights from Sioux City to Denver - Compare and Save

Among airlines operating Sioux City to Denver flights:

• United Airlines: offers free seat selection

Extra legroom and free seat selection availability depends on fare class and route.

Only United Airlines operates flights between Sioux City and Denver.

Flights from Sioux City to Denver usually depart from Sioux City Sioux Gateway (SUX) and arrive at Denver Intl (DEN).

Here are some options for this route, based on selected ticket types and cabin classes:

• United Airlines: a cabin bag in Economy Class class

Bag allowance can vary by ticket type, cabin class, route and airline, so travelers should check the fare details before booking.

Only Economy Class is available on flights from Sioux City to Denver.

There is no standard. Checked-bag policies vary by airline on this route. Most carriers charge $40–$80 for the first checked bag in economy. Premium fares and elite-status bookings typically include a free checked bag.

The Canadair (Bombardier) Regional Jet family is used most often on this route, operated mainly by United Airlines. Other aircraft seen on the route include Boeing 737 MAX 8 variants.

On the Sioux City to Denver route, being flexible with your departure day can save you up to 37%. Saturday is the cheapest day at $234 round-trip on average, while Monday is the most expensive at $370: a $136 difference. Cheaper weekend fares like these are typical of routes dominated by weekday business travel.

Evening is the busiest departure period on Sioux City to Denver flights, with 100% of flights leaving in that window. Morning departures account for 0%, afternoon flights for 0%, and night flights for 0%.

Some of the most popular sights in Denver are Colorado Convention Center, Coors Field and Ball Arena. These are among the most viewed places in Denver on KAYAK.

These are the earliest and latest flight times available from Sioux City to Denver:

• Earliest: departs at 6:30 pm and lands at 8:25 pm
• Latest: departs at 6:58 pm and lands at 8:53 pm.

The flight takes about 1h 55m.

A nonstop flight from Sioux City to Denver takes 1h 55m, covering 465 miles.

No, a passport is not required for this domestic route, but you will need a real ID-compliant driver's license, a state ID, or another TSA-accepted form of identification.

Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $234 to $1,453. That means the highest observed fare was about 6x higher than the lowest one.

One-way fares from Sioux City to Denver are currently lower than usual. Average one-way flight prices are about $210, which is 19% below the typical average for this route.

Denver is 1 hour behind Sioux City (Mountain Time vs Central Time). Plan for the time shift when scheduling connections or first-day activities.

Denver Intl Airport (DEN) hosts 5 major car rental companies, with daily rates starting from around $16 for economy cars. Top options include:
• Routes Car & Truck Rentals
• Ace
• NU Car
• Europcar
• Hertz

Round-trip flights from Sioux City to Denver range from $222 to $360, with an average of $262 over the past 12 months. Anything below $222 counts as a good deal.