Cheap flights from Denver to Sioux City

Denver
DEN
Sioux Gateway
SUX

Flight deals from Denver to Sioux City

Below you can see the best deals on flights Denver — Sioux City for upcoming dates. Direct and connecting flights from various airlines — compare prices and choose the right ticket.

The lowest price for the next 2 months is on 31 October, from $160.

Top 10 cheap flights from Denver to Sioux City

About the Denver — Sioux City flight

Looking for cheap flights from Denver to Sioux City? Compare fares from different airlines, check the flight schedule and travel time — and book your Denver — Sioux City ticket online at the best price.

The route has direct flights — around 6 flights per week, flights are operated by United Airlines, a nonstop flight takes about 1 h 42 min, the distance between the cities is around 783 km.

Planning your trip? You may find our Sioux City travel guide, how to get from the airport into town and Sioux City weather forecast useful. To catch a low fare, use the low-price calendar and the monthly price chart on this page.

Facts about this route

from $160Min. price
OctoberCheapest
MayPeak season
YesDirect flights
783 kmDistance
1 h 42 minTravel time
1Airlines
6 / wkFlights

Flight schedule from Denver to Sioux City

The table shows direct flights from Denver to Sioux City on the selected date. The flight takes approximately 1 h 42 min. Regular flights are operated by United Airlines. Departures from Denver International Airport and Centennial Airport airports, arrivals at Sioux Gateway 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.

Today
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Last update: 01 Sep 2026

Flight ticket prices by day: Denver — Sioux City

Below is a calendar of the lowest flight ticket prices for Denver — Sioux City by day. Pick a convenient date and instantly see the fare. The cheapest flights on this route start from $160 in October, and the most expensive are around $188 in May. 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.

 
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Prices by month

Average one-way fares from Denver to Sioux City by month. Tickets are usually cheapest in March (around $130) and priciest in April (about $204) — use the table and chart below to pick the best time to fly.

MonthAverage priceLevelMonthAverage priceLevelMonthAverage priceLevel
Jan$135lowMay$195highSep$153low
Feb$163mediumJun$186highOct$158medium
Mar$130lowJul$172mediumNov$130low
Apr$204highAug$167mediumDec$158medium

Some values are estimated based on seasonality.

When to fly

Weather in Sioux City: it is warmest in July (up to 30 °C on average) and coolest in January (around -1 °C). The driest month is January.

Tickets are usually cheapest in October and most expensive in May. Compare prices and weather by month in the charts below to pick the best time to fly.

Temperature · Sioux City

Dry and wet days · Sioux City

Wind speed and direction · Sioux City

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How to get the best deal on a Denver — Sioux City ticket

  • Book ahead: fares for Denver — Sioux City are usually lower 3–8 weeks before departure than at the last minute.
  • Play with your dates — Tuesday, Wednesday and Saturday departures are often cheaper than Friday and Sunday.
  • Denver is served by more than one airport — compare fares and travel time to each before you book.
  • Flights Denver — Sioux City operate on Sundays, Mondays, Tuesdays, Wednesdays, Fridays and Saturdays — keep that in mind when picking your travel dates.
  • The cheapest month to fly to Sioux City is usually October — plan your trip around it if your dates are flexible.
  • Compare direct and connecting flights: nonstop is faster, while a connection is sometimes noticeably cheaper.
  • Watch the low-price calendar and the monthly price trend on this page — they make it easier to catch a good date.
  • Travelling light? Pick a cabin-baggage-only fare — tickets without checked luggage are noticeably cheaper.
  • Get to the airport in good time — about 2–3 hours before an international departure and roughly an hour before a domestic one.

Airlines

Flights on the Denver — Sioux City route are operated by 1 airline; United Airlines runs the most flights (around 100% of all flights). Compare carriers, flight shares and schedules below.

  • United AirlinesUA
    2x/week
    WebsiteFleet: 956165M pax/year
    • Direct flight DEN → SUX2x/week
      Duration
      1h 38m
      Days
      MTWTFSS
    100.0%Open →

Cities and airports on the Denver — Sioux City route

Flights Denver — Sioux City depart from Denver International Airport and Centennial Airport and arrive at Sioux Gateway Airport. Below are pages for the cities, countries, and airports on the route: airlines, schedules, and travel guides.

Departure

Denver

DEN
United States
About the cityHow to get thereWeatherAll about the country United States
Arrival

Sioux City

SUX
United States
About the cityHow to get thereWeatherAll about the country United States
Departure airports
Arrival airports

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Frequently asked questions about the Denver — Sioux City flight

How long is the flight from Denver to Sioux City?

A nonstop Denver — Sioux City flight takes about 1 h 42 min — the distance between the cities is around 783 km.

How far is it from Denver to Sioux City?

The distance from Denver to Sioux City is about 783 km, which a nonstop flight covers in around 1 h 42 min.

Are there direct flights from Denver to Sioux City?

Yes, there are nonstop flights Denver — Sioux City — around 6 flights per week.

Which airlines fly from Denver to Sioux City?

Airlines operating Denver — Sioux City include United Airlines. See the full list with schedules in the "Airlines" section on this page.

Which airports do Denver — Sioux City flights use?

Flights from Denver depart from Denver International Airport, Centennial Airport, and arrive at Sioux Gateway Airport. If a city has more than one airport, check which one your ticket uses before you travel.

How much is a ticket from Denver to Sioux City?

The price of a Denver — Sioux City ticket depends on your travel date, season and demand: it is usually cheapest to fly in October, and most expensive in May. Tickets typically cost between $160 and $188. Check the current lowest fare and low-price calendar on this page.

When is the best time to book flights Denver — Sioux City?

Flights Denver — Sioux City are usually cheaper when booked in advance — a few weeks before departure and away from peak dates; the most budget-friendly month to fly is October. Compare prices by month in the price trend chart on this page.

How can I find the cheapest flights from Denver to Sioux City?

To catch a low fare Denver — Sioux City, book a few weeks in advance, keep your dates flexible, and compare airlines and connecting options. The low-price calendar and monthly price chart on this page show the cheapest days and months at a glance: the most budget-friendly month to fly is usually October.

How early should I arrive at the airport?

For international flights, plan to be at the airport about 2–3 hours before departure, and around an hour before a domestic flight. Allow extra time during busy travel seasons and at large hubs, where check-in and security lines can be longer.

Where else you can fly from Denver

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