How many flights depart from Sioux City to Colorado on average per week?

The number of flights available between Sioux City and Colorado is 1 per week as of September 2026. The most frequent departure day is Wed, with 100% of weekly flights leaving on this day.

What airlines fly to Colorado?

United Airlines, Frontier and Southwest are the top three most popular airlines that fly to Colorado from Sioux City according to our data. United Airlines is the first choice among our users, with 53% of people opting to fly with this airline when traveling to Colorado. Keep in mind that there are 3 different airlines that fly to Colorado on a routine basis, so you have a few additional options to choose from.

What is the cheapest airline that flies from Sioux City Sioux Gateway to Colorado?

United Airlines is the most popular carrier operating from Sioux City Sioux Gateway to Colorado

When did momondo last update prices for flights from Sioux City Sioux Gateway Airport to Colorado?

Prices for flights from Sioux City Sioux Gateway Airport to Colorado are updated daily.

How many operators does momondo search for flights from Sioux City Sioux Gateway Airport to Colorado?

The number of operators available for flights from Sioux City Sioux Gateway Airport to Colorado is 1 as of September 2026.

How old do you have to be to fly from Sioux City Sioux Gateway Airport to Colorado?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Sioux City Sioux Gateway Airport to Colorado.

What documentation or ID do you need to fly to Colorado?

The required travel and health documents for your Colorado trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Colorado. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$168 Cheap Flights from Sioux City to Colorado in 2026/27

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Sioux City to Colorado

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

6:58 pm - 7:52 pmSUX Sioux City Sioux Gateway-DEN Denver Intl

1h 54mnonstop

9:05 pm - 11:43 pmDEN Denver Intl-SUX Sioux City Sioux Gateway

1h 38mnonstop

$234United Airlines

Wed, Oct 21 - Wed, Oct 28

6:45 pm - 7:41 pmSUX Sioux City Sioux Gateway-DEN Denver Intl

1h 56mnonstop

9:05 pm - 11:43 pmDEN Denver Intl-SUX Sioux City Sioux Gateway

1h 38mnonstop

$234United Airlines

Sat, Nov 14 - Tue, Nov 17

6:00 am - 7:00 amSUX Sioux City Sioux Gateway-DEN Denver Intl

2h 00mnonstop

8:05 am - 10:44 amDEN Denver Intl-SUX Sioux City Sioux Gateway

1h 39mnonstop

$234United Airlines

Thu, Mar 18 - Sun, Mar 21

6:45 pm - 7:41 pmSUX Sioux City Sioux Gateway-DEN Denver Intl

1h 56mnonstop

9:05 pm - 11:43 pmDEN Denver Intl-SUX Sioux City Sioux Gateway

1h 38mnonstop

$234United Airlines

Sat, Oct 31 - Tue, Nov 3

6:58 pm - 7:52 pmSUX Sioux City Sioux Gateway-DEN Denver Intl

1h 54mnonstop

9:05 pm - 11:43 pmDEN Denver Intl-SUX Sioux City Sioux Gateway

1h 38mnonstop

$282United Airlines

Mon, Oct 5 - Mon, Oct 19

6:58 pm - 7:52 pmSUX Sioux City Sioux Gateway-DEN Denver Intl

1h 54mnonstop

9:05 pm - 11:43 pmDEN Denver Intl-SUX Sioux City Sioux Gateway

1h 38mnonstop

$319United Airlines

Wed, Oct 21 - Sun, Oct 25

6:58 pm - 7:52 pmSUX Sioux City Sioux Gateway-DEN Denver Intl

1h 54mnonstop

9:05 pm - 11:43 pmDEN Denver Intl-SUX Sioux City Sioux Gateway

1h 38mnonstop

$319United Airlines

Tue, Oct 20 - Sun, Oct 25

6:45 pm - 11:59 pmSUX Sioux City Sioux Gateway-COS Colorado Springs

6h 14m1 stop Denver Intl

5:10 pm - 11:43 pmCOS Colorado Springs-SUX Sioux City Sioux Gateway

5h 33m1 stop Denver Intl

$324United Airlines

Wed, Oct 28 - Sat, Oct 31

6:58 pm - 7:52 pmSUX Sioux City Sioux Gateway-DEN Denver Intl

1h 54mnonstop

9:05 pm - 11:43 pmDEN Denver Intl-SUX Sioux City Sioux Gateway

1h 38mnonstop

$330United Airlines

Thu, Oct 8 - Mon, Oct 12

6:58 pm - 7:52 pmSUX Sioux City Sioux Gateway-DEN Denver Intl

1h 54mnonstop

9:05 pm - 11:43 pmDEN Denver Intl-SUX Sioux City Sioux Gateway

1h 38mnonstop

$330United Airlines

Mon, Oct 19 - Wed, Oct 21

Cheap last minute flights

Enter your travel dates to find the best prices.

6:58 pm - 11:59 pmSUX Sioux City Sioux Gateway-COS Colorado Springs

6h 01m1 stop Denver Intl

5:08 pm - 11:43 pmCOS Colorado Springs-SUX Sioux City Sioux Gateway

5h 35m1 stop Denver Intl

$514United Airlines

Fri, Sep 25 - Sun, Oct 4

6:58 pm - 7:52 pmSUX Sioux City Sioux Gateway-DEN Denver Intl

1h 54mnonstop

9:05 pm - 11:43 pmDEN Denver Intl-SUX Sioux City Sioux Gateway

1h 38mnonstop

$530United Airlines

Thu, Sep 24 - Sat, Sep 26

6:58 pm - 7:52 pmSUX Sioux City Sioux Gateway-DEN Denver Intl

1h 54mnonstop

9:05 pm - 11:43 pmDEN Denver Intl-SUX Sioux City Sioux Gateway

1h 38mnonstop

$530United Airlines

Fri, Sep 25 - Sun, Sep 27

6:58 pm - 7:52 pmSUX Sioux City Sioux Gateway-DEN Denver Intl

1h 54mnonstop

9:05 pm - 11:43 pmDEN Denver Intl-SUX Sioux City Sioux Gateway

1h 38mnonstop

$530United Airlines

Fri, Sep 25 - Mon, Sep 28

6:58 pm - 7:52 pmSUX Sioux City Sioux Gateway-DEN Denver Intl

1h 54mnonstop

7:45 am - 5:53 pmDEN Denver Intl-SUX Sioux City Sioux Gateway

9h 08m1 stop Chicago O'Hare Intl

$661United Airlines

Sun, Sep 27 - Mon, Oct 5

6:58 pm - 7:52 pmSUX Sioux City Sioux Gateway-DEN Denver Intl

1h 54mnonstop

9:01 pm - 5:53 pmDEN Denver Intl-SUX Sioux City Sioux Gateway

19h 52m2 stops Minneapolis St Paul Chicago O'Hare Intl

$675United Airlines

Sun, Sep 27 - Mon, Oct 5

8:35 am - 9:44 pmSUX Sioux City Sioux Gateway-DEN Denver Intl

14h 09m1 stop Chicago O'Hare Intl

9:05 pm - 11:43 pmDEN Denver Intl-SUX Sioux City Sioux Gateway

1h 38mnonstop

$753United Airlines

Fri, Sep 25 - Sun, Sep 27

6:58 pm - 7:52 pmSUX Sioux City Sioux Gateway-DEN Denver Intl

1h 54mnonstop

4:40 pm - 5:53 pmDEN Denver Intl-SUX Sioux City Sioux Gateway

24h 13m1 stop Chicago O'Hare Intl

$763United Airlines

Fri, Sep 25 - Mon, Sep 28

6:58 pm - 10:06 pmSUX Sioux City Sioux Gateway-COS Colorado Springs

4h 08m1 stop Denver Intl

5:30 am - 5:53 pmCOS Colorado Springs-SUX Sioux City Sioux Gateway

11h 23m2 stops Denver Intl Chicago O'Hare Intl

$764United Airlines

Fri, Sep 25 - Sun, Oct 4

6:58 pm - 7:52 pmSUX Sioux City Sioux Gateway-DEN Denver Intl

1h 54mnonstop

9:05 pm - 11:43 pmDEN Denver Intl-SUX Sioux City Sioux Gateway

1h 38mnonstop

$780United Airlines

Sun, Sep 27 - Mon, Oct 5

Cheap direct flights

Enter your travel dates to find the best prices.

6:45 pm - 7:41 pmSUX Sioux City Sioux Gateway-DEN Denver Intl

1h 56mnonstop

9:05 pm - 11:43 pmDEN Denver Intl-SUX Sioux City Sioux Gateway

1h 38mnonstop

$234United Airlines

Sat, Nov 14 - Tue, Nov 17

6:58 pm - 7:52 pmSUX Sioux City Sioux Gateway-DEN Denver Intl

1h 54mnonstop

9:05 pm - 11:43 pmDEN Denver Intl-SUX Sioux City Sioux Gateway

1h 38mnonstop

$234United Airlines

Wed, Oct 21 - Wed, Oct 28

6:00 am - 7:00 amSUX Sioux City Sioux Gateway-DEN Denver Intl

2h 00mnonstop

8:05 am - 10:44 amDEN Denver Intl-SUX Sioux City Sioux Gateway

1h 39mnonstop

$234United Airlines

Thu, Mar 18 - Sun, Mar 21

6:45 pm - 7:41 pmSUX Sioux City Sioux Gateway-DEN Denver Intl

1h 56mnonstop

9:05 pm - 11:43 pmDEN Denver Intl-SUX Sioux City Sioux Gateway

1h 38mnonstop

$234United Airlines

Sat, Oct 31 - Tue, Nov 3

6:58 pm - 7:52 pmSUX Sioux City Sioux Gateway-DEN Denver Intl

1h 54mnonstop

9:05 pm - 11:43 pmDEN Denver Intl-SUX Sioux City Sioux Gateway

1h 38mnonstop

$282United Airlines

Mon, Oct 5 - Mon, Oct 19

6:58 pm - 7:52 pmSUX Sioux City Sioux Gateway-DEN Denver Intl

1h 54mnonstop

9:05 pm - 11:43 pmDEN Denver Intl-SUX Sioux City Sioux Gateway

1h 38mnonstop

$319United Airlines

Wed, Oct 21 - Sun, Oct 25

6:58 pm - 7:52 pmSUX Sioux City Sioux Gateway-DEN Denver Intl

1h 54mnonstop

9:05 pm - 11:43 pmDEN Denver Intl-SUX Sioux City Sioux Gateway

1h 38mnonstop

$319United Airlines

Tue, Oct 20 - Sun, Oct 25

6:58 pm - 7:52 pmSUX Sioux City Sioux Gateway-DEN Denver Intl

1h 54mnonstop

9:05 pm - 11:43 pmDEN Denver Intl-SUX Sioux City Sioux Gateway

1h 38mnonstop

$330United Airlines

Thu, Oct 8 - Mon, Oct 12

6:58 pm - 7:52 pmSUX Sioux City Sioux Gateway-DEN Denver Intl

1h 54mnonstop

9:05 pm - 11:43 pmDEN Denver Intl-SUX Sioux City Sioux Gateway

1h 38mnonstop

$330United Airlines

Mon, Oct 5 - Fri, Oct 9

6:44 pm - 7:40 pmSUX Sioux City Sioux Gateway-DEN Denver Intl

1h 56mnonstop

9:05 pm - 11:43 pmDEN Denver Intl-SUX Sioux City Sioux Gateway

1h 38mnonstop

$330United Airlines

Mon, Dec 7 - Tue, Dec 8

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United Airlines flights from Sioux City to Colorado

Our best United Airlines deals on Sioux City to Colorado flight tickets

United Airlines

Oct 21

SUX6:58 pmSioux City Sioux Gateway

1h 54m

DEN7:52 pmDenver Intl

Oct 28

DEN9:05 pmDenver Intl

1h 38m

SUX11:43 pmSioux City Sioux Gateway

$234

United Airlines

Oct 5

SUX6:58 pmSioux City Sioux Gateway

1h 54m

DEN7:52 pmDenver Intl

Oct 19

DEN9:05 pmDenver Intl

1h 38m

SUX11:43 pmSioux City Sioux Gateway

$282

United Airlines

Oct 20

SUX6:58 pmSioux City Sioux Gateway

1h 54m

DEN7:52 pmDenver Intl

Oct 25

DEN9:05 pmDenver Intl

1h 38m

SUX11:43 pmSioux City Sioux Gateway

$319

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Quickest round-trip

Sioux CityDenver

SUX Sioux City Sioux Gateway - DEN Denver Intl

SUXDEN

Sioux City Sioux Gateway

Wed 10/21

6:58 pm-7:52 pm

Nonstop1h 54m

Denver Intl

Wed 10/28

9:05 pm-11:43 pm

Nonstop1h 38m

$234

Sioux CityDenver

SUX Sioux City Sioux Gateway - DEN Denver Intl

SUXDEN

Sioux City Sioux Gateway

Sat 11/14

6:45 pm-7:41 pm

Nonstop1h 56m

Denver Intl

Tue 11/17

9:05 pm-11:43 pm

Nonstop1h 38m

$234

Sioux CityDenver

SUX Sioux City Sioux Gateway - DEN Denver Intl

SUXDEN

Sioux City Sioux Gateway

Thu 3/18

6:00 am-7:00 am

Nonstop2h 00m

Denver Intl

Sun 3/21

8:05 am-10:44 am

Nonstop1h 39m

$234

Sioux CityDenver

SUX Sioux City Sioux Gateway - DEN Denver Intl

SUXDEN

Sioux City Sioux Gateway

Sat 10/31

6:45 pm-7:41 pm

Nonstop1h 56m

Denver Intl

Tue 11/3

9:05 pm-11:43 pm

Nonstop1h 38m

$234

Sioux CityDenver

SUX Sioux City Sioux Gateway - DEN Denver Intl

SUXDEN

Sioux City Sioux Gateway

Mon 10/5

6:58 pm-7:52 pm

Nonstop1h 54m

Denver Intl

Mon 10/19

9:05 pm-11:43 pm

Nonstop1h 38m

$282

Sioux CityDenver

SUX Sioux City Sioux Gateway - DEN Denver Intl

SUXDEN

Sioux City Sioux Gateway

Wed 10/21

6:58 pm-7:52 pm

Nonstop1h 54m

Denver Intl

Sun 10/25

9:05 pm-11:43 pm

Nonstop1h 38m

$319

Sioux CityDenver

SUX Sioux City Sioux Gateway - DEN Denver Intl

SUXDEN

Sioux City Sioux Gateway

Tue 10/20

6:58 pm-7:52 pm

Nonstop1h 54m

Denver Intl

Sun 10/25

9:05 pm-11:43 pm

Nonstop1h 38m

$319

Sioux CityColorado Springs

SUX Sioux City Sioux Gateway - COS Colorado Springs

SUXCOS

Sioux City Sioux Gateway

Wed 10/28

6:45 pm-11:59 pm

1 stop6h 14m

Colorado Springs

Sat 10/31

5:10 pm-11:43 pm

1 stop5h 33m

$324

Sioux CityDenver

SUX Sioux City Sioux Gateway - DEN Denver Intl

SUXDEN

Sioux City Sioux Gateway

Thu 10/8

6:58 pm-7:52 pm

Nonstop1h 54m

Denver Intl

Mon 10/12

9:05 pm-11:43 pm

Nonstop1h 38m

$330

Sioux CityDenver

SUX Sioux City Sioux Gateway - DEN Denver Intl

SUXDEN

Sioux City Sioux Gateway

Mon 10/19

6:58 pm-7:52 pm

Nonstop1h 54m

Denver Intl

Wed 10/21

9:05 pm-11:43 pm

Nonstop1h 38m

$330

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 19 resultsSorted by cheapest first

How to get the cheapest flight ticket from Sioux City to Colorado

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Other information

What is the cheapest month to fly to Colorado?

The month of June is, on average, the cheapest month to fly to Colorado from Sioux City, with most prices found around $214. The month of March is another great option to travel to Colorado, with average flight prices from Sioux City averaging around $214.

What is the cheapest day to depart on your flight to Colorado?

The cheapest day to depart from Sioux City to Colorado is on a Wednesday when prices can be found for as low as $343. On the other hand, Monday is the most expensive day to depart from Sioux City because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $708.

What is the cheapest time of day to depart on your flight to Colorado?

The cheapest time of day to fly to Colorado is in the afternoon when flights can be purchased for as low as $345. In the morning is when there is more demand to fly to Colorado, so prices are often more expensive at around $477 per ticket.

What is the cheapest Sioux City Sioux Gateway to Colorado flight route?

Fly from Sioux City Sioux Gateway to Denver Intl for the best Sioux City Sioux Gateway - Colorado flight prices

What cabin class options are available on Sioux City to Colorado flights?

There are 3 cabin classes available to choose from on Sioux City to Colorado flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Sioux City to Colorado flights?

No. A direct flight is the cheapest option for a flight between Sioux City to Colorado.

Cheap Sioux City to Colorado flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Sioux City to Colorado

Best Price Found	$168
Fastest flight time	1h 54m
Direct flights	Every day
Airports in Colorado	87 airports

The best one-way flight to Colorado from Sioux City in the past 72 hours is $168. The best round-trip flight deal from Sioux City to Colorado found on momondo in the last 72 hours is $234.

The fastest flight from Sioux City to Colorado takes 1h 54m

Direct flights go from Sioux City to Colorado every day.

There are 87 airports in Colorado. From Sioux City there are direct flights to Denver Intl (DEN).

Search flight deals

Frequently asked questions about flying from Sioux City to Colorado

When did momondo last update prices for flights from Sioux City Sioux Gateway Airport to Colorado?
Prices for flights from Sioux City Sioux Gateway Airport to Colorado are updated daily.
How many operators does momondo search for flights from Sioux City Sioux Gateway Airport to Colorado?
The number of operators available for flights from Sioux City Sioux Gateway Airport to Colorado is 1 as of September 2026.
How old do you have to be to fly from Sioux City Sioux Gateway Airport to Colorado?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Sioux City Sioux Gateway Airport to Colorado.
What documentation or ID do you need to fly to Colorado?
The required travel and health documents for your Colorado trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Colorado. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular plane model from Sioux City to Colorado?
Based on momondo bookings for flights between Sioux City and Colorado, the leading plane model is Canadair (Bombardier) Regional Jet, making up 30.56% of the total bookings. Other popular models include Canadair (Bombardier) Regional Jet 200 with 11.11%, Boeing 737 MAX 8 with 5.56%, and Airbus A321-100/200 with 5.56%.

Best airlines flying from Sioux City to Colorado

Compare and see reviews for airlines that fly from Sioux City to Colorado with momondo

Airline	Rating	Free Cancellation	Price
United Airlines	PriceFrom $214	Free Cancellation	Rating 7.4 10,226 reviews		Search United Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Sioux City to Colorado?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Colorado from Sioux City.

Can I find flights from Sioux City to Colorado with flexible booking policies on momondo?

Flights from Sioux City to Colorado with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Sioux City to Colorado?

momondo helps you find the best flight between Sioux City and Colorado by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Sioux City to Colorado right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Colorado, momondo offers a useful price alert feature which will track prices for flights to Colorado from Sioux City and alert you when they change.