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Sioux City

$253+ Cheap flights from Colorado to Sioux City (SUX)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/26. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — SUX
Oct 14 — Oct 211
Tue 10/14
Tue 10/21
1 adult, Economy
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Cheap flight deals from Colorado to Sioux City

Keep the following information in mind while searching for Colorado to Sioux City flight deals. Data was last updated September 14, 2025.

Round-trip from

$262
(United Airlines)

One-way from

$253
(United Airlines)

Popular in

April

Cheapest in

December

Average price

$325

Good round-trip deal

$345 or less
From Colorado to Sioux City Sioux Gateway
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One-way flight from Colorado to Sioux City Sioux Gateway
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Highest demand for flights based on searches. 17% potential increase in price ($72 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($14 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Price to beat on a round-trip flight from Colorado to Sioux City Sioux Gateway.
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Find flight deals from Colorado to Sioux City

Cheapest flights from Colorado to Sioux City
Explore the most affordable flight options available from Colorado to Sioux City. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 14, 2025.

This United Airlines deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/223:35 pmDEN - SUX
Nonstop1h 33mUnited Airlines
Sun 11/306:46 pmSUX - DEN
Nonstop1h 48mUnited Airlines
Deal found 9/13$262
This United Airlines deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/43:40 pmDEN - SUX
Nonstop1h 34mUnited Airlines
Sun 10/56:51 pmSUX - DEN
Nonstop1h 49mUnited Airlines
Deal found 9/14$304
This United Airlines deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/23:40 pmDEN - SUX
Nonstop1h 34mUnited Airlines
Fri 10/36:51 pmSUX - DEN
Nonstop1h 49mUnited Airlines
Deal found 9/14$350
This United Airlines deal was found by Cheapflights users on 9/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/103:35 pmDEN - SUX
Nonstop1h 35mUnited Airlines
Sun 12/146:52 pmSUX - DEN
Nonstop1h 48mUnited Airlines
Deal found 9/12$362
This United Airlines deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/283:40 pmDEN - SUX
Nonstop1h 34mUnited Airlines
Thu 10/26:51 pmSUX - DEN
Nonstop1h 49mUnited Airlines
Deal found 9/13$410
This United Airlines deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/76:00 amDEN - SUX
1 stop16h 00mUnited Airlines
Wed 10/86:51 pmSUX - DEN
Nonstop1h 49mUnited Airlines
Deal found 9/13$446
This United Airlines deal was found by Cheapflights users on 9/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/113:35 pmDEN - SUX
Nonstop1h 35mUnited Airlines
Sun 12/146:52 pmSUX - DEN
Nonstop1h 48mUnited Airlines
Deal found 9/12$460
This United Airlines deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/76:00 amDEN - SUX
1 stop15h 59mUnited Airlines
Sat 11/86:46 pmSUX - DEN
Nonstop1h 48mUnited Airlines
Deal found 9/14$466
This United Airlines deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/2812:54 pmCOS - SUX
1 stop4h 20mUnited Airlines
Thu 10/26:51 pmSUX - COS
1 stop4h 03mUnited Airlines
Deal found 9/13$628

Cheapflights Fare Finder

 
Customize your flight search to find flights from Colorado to Sioux City that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 14, 2025.
Use the filters below to find and compare flights from Colorado to Sioux City that are best for you.

Fly from

Colorado

Fly to

Sioux City

Route

Depart

Return

Price

DenverSioux City

DEN - SUX

DENSUX

Denver Intl

Sat 11/22

3:35 pm-6:08 pm

Nonstop1h 33m

Sioux City Sioux Gateway

Sun 11/30

6:46 pm-7:34 pm

Nonstop1h 48m

$262

DenverSioux City

DEN - SUX

DENSUX

Denver Intl

Sat 10/4

3:40 pm-6:14 pm

Nonstop1h 34m

Sioux City Sioux Gateway

Sun 10/5

6:51 pm-7:40 pm

Nonstop1h 49m

$304

DenverSioux City

DEN - SUX

DENSUX

Denver Intl

Fri 11/7

3:35 pm-6:08 pm

Nonstop1h 33m

Sioux City Sioux Gateway

Sat 11/8

6:46 pm-7:34 pm

Nonstop1h 48m

$350

DenverSioux City

DEN - SUX

DENSUX

Denver Intl

Thu 10/2

3:40 pm-6:14 pm

Nonstop1h 34m

Sioux City Sioux Gateway

Fri 10/3

6:51 pm-7:40 pm

Nonstop1h 49m

$350

DenverSioux City

DEN - SUX

DENSUX

Denver Intl

Tue 10/7

3:40 pm-6:14 pm

Nonstop1h 34m

Sioux City Sioux Gateway

Wed 10/8

6:51 pm-7:40 pm

Nonstop1h 49m

$350

DenverSioux City

DEN - SUX

DENSUX

Denver Intl

Wed 12/10

3:35 pm-6:10 pm

Nonstop1h 35m

Sioux City Sioux Gateway

Sun 12/14

6:52 pm-7:40 pm

Nonstop1h 48m

$362

DenverSioux City

DEN - SUX

DENSUX

Denver Intl

Thu 12/11

3:35 pm-6:10 pm

Nonstop1h 35m

Sioux City Sioux Gateway

Sun 12/14

6:52 pm-7:40 pm

Nonstop1h 48m

$460

Colorado SpringsSioux City

COS - SUX

COSSUX

Colorado Springs

Sun 9/28

12:54 pm-6:14 pm

1 stop4h 20m

Sioux City Sioux Gateway

Thu 10/2

6:51 pm-9:54 pm

1 stop4h 03m

$628

DenverSioux City

DEN - SUX

DENSUX

Denver Intl

Sun 10/26

3:35 pm-6:08 pm

Nonstop1h 33m

$253

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/14

Best time to book a flight from Colorado to Sioux City

Have a flexible travel schedule? Discover the best time to fly to Sioux City from Colorado with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Colorado to Sioux City

What is the cheapest month to book a flight from Colorado to Sioux City?

Currently, October is the cheapest month in which you can book a flight from Colorado to Sioux City (average of $318). Flying from Colorado to Sioux City in March is currently the most expensive (average of $446). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from CO to SUX?

Find hourly flight availability from Colorado to Sioux City. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 14, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Colorado to Sioux City as you normally would.

Weekly flight availability from Colorado to Sioux City

Explore weekly flight availability from Colorado to Sioux City. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated September 14, 2025.

The most flights from USCO to SUX are scheduled on a Monday (1 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (1 on average).

Related info for your journey

Find useful and relevant information for your journey from Colorado to Sioux City. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Sioux City from Colorado?

    Sioux City Sioux Gateway (SUX), located 7.0 mi from the city center, is the airport you fly into when you book flights from Colorado to Sioux City.

  • How long is the flight from Colorado to Sioux City?

    There are many flights that can get you from Colorado to Sioux City in 1h 33m. Fly via United Airlines to get the fastest option. The distance between Colorado and Sioux City is about 465 mi. Generally, flights for this route are nonstop.

  • What are the cheapest flights from Colorado to Sioux City?

    On average you can expect to pay $362 for a flight from Colorado to Sioux City. The cheapest flight overall is $214 while the most popular route, (Denver Intl - Sioux City Sioux Gateway) is currently priced at $262.

  • Can I find deals for flights from Colorado to Sioux City that include hotel bookings?

    Yes. In addition to deals on Colorado to Sioux City flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Colorado to Sioux City?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Colorado to Sioux City.

  • Can I find deals for business class flights from Colorado to Sioux City?

    Yes. Cheapflights offers flight deals from Colorado to Sioux City by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Colorado to Sioux City?

    Currently, October is the cheapest month in which you can book a flight from Colorado to Sioux City (average of $318). Flying from Colorado to Sioux City in March is currently the most expensive (average of $446). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Top airline flying from Colorado to Sioux City

Discover the top airline that operate flights from Colorado to Sioux City. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$214Average$314FlexibilityNo cancel feeOn-time69%

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