On this page, you can book flight tickets from Sioux City to Denver. This route, covering approximately 783 km, is serviced regularly, with a frequency of about 8 flights per week. Find information on how to get to the airport at your departure point and how to arrange an airport transfer upon arrival.
Flights on this route are operated by United Airlines. Ticket prices are dynamic, so to find the best deals, we recommend using the price chart and low fare calendar provided on this page.
The table shows direct flights Sioux City → Denver on the selected date. The flight takes approximately 1 h 54 min. Regular flights are operated by United Airlines. Departures from Sioux Gateway Airport airports, arrivals at Denver International Airport and Centennial Airport.
For each flight, the following details are shown: departure time (local), arrival city and airport, flight number and airline, terminal or gate, and status. Click on a flight to open its details and go to ticket search. To view flights on a different day, change the date above the table.
Below is a calendar of the lowest flight ticket prices for Sioux City — Denver by day. Pick a convenient date and instantly see the fare. The cheapest flights on this route start from $182 in F, and the most expensive are around $193 in y. If your travel dates are flexible, the calendar will help you find the best price for your preferred period. To view round-trip fares, switch to the "Round trip" tab above the calendar, select your departure date — and the right-hand calendar will highlight the lowest prices for return flights on each day.
Sioux City → Denver, average one-way price
| Month | Average price | Level | Month | Average price | Level | Month | Average price | Level |
|---|---|---|---|---|---|---|---|---|
| Jan | $206 | low | May | $238 | medium | Sep | $232 | medium |
| Feb | $206 | low | Jun | $264 | high | Oct | $219 | low |
| Mar | $219 | medium | Jul | $277 | high | Nov | $212 | low |
| Apr | $225 | medium | Aug | $257 | high | Dec | $251 | high |
Some values are estimated based on seasonality.
The climate in Denver is characterized by distinct seasonality: the warmest month is July, with average temperatures reaching 30.5°C. The coldest period occurs in February, when temperatures can drop to -9°C, and peak precipitation is observed in May.
From a budget perspective, it is most cost-effective to plan your flight for September, when ticket prices start $181. The most expensive month to travel is December — during this period, the minimum fare starts $185.
The optimal time to fly is September, which offers a balance between comfortable weather and the lowest prices. It is recommended to avoid May if you want to minimize the risk of heavy rain during your visit.
Flights on the Sioux City — Denver route are served by United Airlines, which is the key carrier for this destination. There are about 8 flights per week, providing regular air service between the cities. You can find the detailed schedule, departure times, and availability of direct flights in the interactive airline list below.
Flights Sioux City — Denver depart from Sioux Gateway Airport and arrive at Denver International Airport and Centennial Airport. Below are pages for the cities, countries, and airports on the route: airlines, schedules, and travel guides.
The average direct flight time for the 783 km distance is about 1 hour 15 minutes; however, the exact duration depends on the aircraft type and weather conditions.
The main carrier connecting these two cities is United Airlines (UA).
Yes, there are direct flights on this route, allowing you to reach your destination as quickly as possible without layovers.
Airfares change constantly depending on demand and the departure date. You can find the current lowest price in the low price calendar on this page.
All flights from Sioux City land at Denver International Airport (DEN).
Where travelers fly most — pick a route and check prices
