DEN - SUX

$183 Find Cheap Flights from Denver to Sioux City - Compare and Save

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1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$274
Typical prices: $234-$410
United Airlines
Mon 1/8Wed 1/10
DEN - SUX • Non-stop
Cheapest non-stop
$274
Typical prices: $234-$410
United Airlines
Tue 12/11Fri 12/14
DEN - SUX • Non-stop
Nonstop flights
You can fly direct with United Airlines. Average duration is 1h 40m
Direct flights
+1
Direct flights
+1
When to travel
Cheapest • 15% price drop
Most popular
Good to know
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Good to know
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Flight Deals

Cheap Flights from Denver to Sioux City (DEN-SUX)

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Denver to Sioux City

Fri, Dec 4 - Sun, Dec 6
United Airlines Logo
9:05 pm - 11:43 pmDEN  Denver Intl-SUX Sioux City Sioux Gateway
1h 38mnonstop
United Airlines Logo
6:44 pm - 7:40 pmSUX  Sioux City Sioux Gateway-DEN Denver Intl
1h 56mnonstop
$274United Airlines
Fri, Jan 8 - Sun, Jan 10
United Airlines Logo
9:02 pm - 11:44 pmDEN  Denver Intl-SUX Sioux City Sioux Gateway
1h 42mnonstop
United Airlines Logo
6:46 pm - 7:45 pmSUX  Sioux City Sioux Gateway-DEN Denver Intl
1h 59mnonstop
$274United Airlines
Sun, Nov 15 - Sun, Nov 22
United Airlines Logo
9:05 pm - 11:43 pmDEN  Denver Intl-SUX Sioux City Sioux Gateway
1h 38mnonstop
United Airlines Logo
6:45 pm - 7:41 pmSUX  Sioux City Sioux Gateway-DEN Denver Intl
1h 56mnonstop
$274United Airlines
Fri, Dec 11 - Mon, Dec 14
United Airlines Logo
9:05 pm - 11:43 pmDEN  Denver Intl-SUX Sioux City Sioux Gateway
1h 38mnonstop
United Airlines Logo
6:44 pm - 7:40 pmSUX  Sioux City Sioux Gateway-DEN Denver Intl
1h 56mnonstop
$274United Airlines
Sat, Nov 21 - Mon, Nov 23
United Airlines Logo
9:05 pm - 11:43 pmDEN  Denver Intl-SUX Sioux City Sioux Gateway
1h 38mnonstop
United Airlines Logo
6:45 pm - 7:41 pmSUX  Sioux City Sioux Gateway-DEN Denver Intl
1h 56mnonstop
$274United Airlines
Wed, Jan 6 - Tue, Jan 12
United Airlines Logo
9:02 pm - 11:44 pmDEN  Denver Intl-SUX Sioux City Sioux Gateway
1h 42mnonstop
United Airlines Logo
6:46 pm - 7:45 pmSUX  Sioux City Sioux Gateway-DEN Denver Intl
1h 59mnonstop
$274United Airlines
Fri, Feb 12 - Sun, Feb 14
United Airlines Logo
9:09 pm - 11:44 pmDEN  Denver Intl-SUX Sioux City Sioux Gateway
1h 35mnonstop
United Airlines Logo
6:48 pm - 7:45 pmSUX  Sioux City Sioux Gateway-DEN Denver Intl
1h 57mnonstop
$278United Airlines
Thu, Dec 10 - Mon, Dec 14
United Airlines Logo
9:05 pm - 11:43 pmDEN  Denver Intl-SUX Sioux City Sioux Gateway
1h 38mnonstop
United Airlines Logo
6:44 pm - 7:40 pmSUX  Sioux City Sioux Gateway-DEN Denver Intl
1h 56mnonstop
$314United Airlines
Booking Insights

Price, demand and travel trends for Denver to Sioux City flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights with more confidence.

How much is a round-trip flight from Denver to Sioux City?

Round-trip flights from Denver to Sioux City typically range from $234 to $410. The lowest price found in the past 5 days was $274, on United Airlines.

What's the cheapest day of the week to fly from Denver to Sioux City?

Based on deals KAYAK users found in the last 12 months, Saturday is the cheapest day of the week to fly from Denver to Sioux City. It’s 15% cheaper than the average day, while Monday is the most expensive, with prices 58% higher.

Key details for Denver to Sioux City flights

Low season

October

Cheapest flight

$183
Beat the crowds with an average 68% drop in travelers.
The most popular month to fly with an average 86% increase in travelers.
One-way flight from Denver to Sioux City

When to book flights from Denver to Sioux City

Are your dates flexible? Find out the best times to travel from Denver to Sioux City based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

Your Denver to Sioux City flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines and booking tips.

  • What are the earliest and latest flights from Denver to Sioux City?

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

    • Earliest: departs at 9:02 pm and lands at 10:42 pm
    • Latest: departs at 9:05 pm and lands at 10:45 pm.

    The flight takes about 1h 40m.

  • What cabin classes can I book on flights from Denver to Sioux City?

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

  • How long is a flight from Denver to Sioux City?

    A nonstop flight from Denver to Sioux City takes 1h 40m, covering 465 miles.

  • Do I need a passport to fly from Denver to Sioux City?

    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.

  • How much should I expect to pay for a Denver to Sioux City flight?

    Round-trip flights from Denver to Sioux City range from $234 to $410, with an average of $274 over the past 12 months. Anything below $234 counts as a good deal.

  • What is the standard checked-bag allowance on flights from Denver to Sioux City?

    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.

  • Which aircraft model is used most often on flights from Denver to Sioux City?

    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 Canadair (Bombardier) Regional Jet 200 variants.

  • How are flight departures from Denver to Sioux City spread across the day?

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

  • Have flight prices from Denver to Sioux City changed much recently?

    Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $274 to $1,882. That means the highest observed fare was about 7x higher than the lowest one.

  • How are flight prices from Denver to Sioux City looking right now?

    One-way fares from Denver to Sioux City are currently higher than usual. Average one-way flight prices are about $381, which is 108% above the typical average for this route.

  • What car rental options are available at Sioux City Sioux Gateway Airport (SUX)?

    Sioux City Sioux Gateway Airport (SUX) hosts 5 major car rental companies, with daily rates averaging $80 for economy cars. Top options include:

    • Alamo
    • Enterprise Rent-A-Car
    • Hertz
    • Avis
    • National

  • Which airports can I use when flying from Denver to Sioux City?

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

  • Can I save money by using flexible dates for flights from Denver to Sioux City?

    Yes. Flexible dates can save you up to 46% on flights from Denver to Sioux City. Saturday is the cheapest departure day at $234 round-trip on average, while Monday is the most expensive at $433, a difference of $199.

    Cheaper weekend fares like these are typical of routes dominated by weekday business travel.

  • What airlines fly from Denver to Sioux City?

    Only United Airlines operates flights between Denver and Sioux City.

  • What is the time difference between Denver and Sioux City?

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

  • Which airlines offer extra legroom and free seat selection on Denver to Sioux City flights?

    Among airlines operating Denver to Sioux City flights:

    • United Airlines: offers free seat selection

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

  • Which airlines include bags at no extra cost on Denver to Sioux City flights?

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

    • United Airlines: a cabin bag in Economy Class class
    • JetBlue: a cabin bag in Economy Class class

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

Your guide to booking Denver to Sioux City flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your dates are flexible, aim for a Saturday departure and avoid flying on Monday. On this route, Saturday flights average $234, about $199 less than Monday fares (46% savings) based on the last 12 months.
  • If you can choose when to travel, plan your Denver to Sioux City trip for July. Fares historically average $234 round-trip in that month - typically $246 less than the most expensive month, which is September (based on the last 12 months).
  • If you're arriving late at night and need somewhere to stay, check out these hotels close to Sioux City Sioux Gateway Airport.

    • Sioux City Inn

Prefer to fly direct from Denver to Sioux City?

 
Find which airlines fly direct from Denver Intl Airport to Sioux City Sioux Gateway Airport, which days they fly and book direct flights.

Direct departures

Denver Intl to Sioux City Sioux Gateway

Monday

United Airlines

United Airlines

Tuesday

United Airlines

United Airlines

Wednesday

United Airlines

United Airlines

Thursday

United Airlines

United Airlines

Friday

United Airlines

United Airlines

Saturday

United Airlines

United Airlines

Sunday

United Airlines

United Airlines

See more direct flights

Direct returns

Sioux City Sioux Gateway to Denver Intl

Monday

United Airlines

United Airlines

Tuesday

United Airlines

United Airlines

Wednesday

United Airlines

United Airlines

Thursday

United Airlines

United Airlines

Friday

United Airlines

United Airlines

Saturday

United Airlines

United Airlines

Sunday

United Airlines

United Airlines

See more direct flights

More options for your flight from Denver to Sioux City

Complete your trip to Sioux City with a hotel stay or car rental