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Sioux City

$214+ Cheap flights from Colorado to Sioux City (SUX)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/13. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — SUX
nov. 13 — nov. 201
jue. 11/13
jue. 11/20
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 octubre 14, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$214
(United Airlines)

Popular in

April

Cheapest in

February

Average price

$350

Good round-trip deal

$350 or less

Good one-way deal

$153 or less
Provider with most accurate pricing for Denver Intl-Sioux City Sioux Gateway flight deals.
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Provider most trusted by Cheapflights users for Denver Intl-Sioux City Sioux Gateway flights.
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From Colorado to Sioux City Sioux Gateway
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Highest demand for flights based on searches. 12% potential increase in price ($48 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($13 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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Price to beat on a round-trip flight from Colorado to Sioux City Sioux Gateway.
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Price to beat on a one-way 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 octubre 14, 2025.

This United Airlines deal was found by Cheapflights users on 10/14. 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.
jue. 11/133:35 pmDEN - SUX
Nonstop1h 33mUnited Airlines
dom. 11/166:46 pmSUX - DEN
Nonstop1h 48mUnited Airlines
Deal found 10/14$214
This United Airlines deal was found by Cheapflights users on 10/14. 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.
vie. 12/123:35 pmDEN - SUX
Nonstop1h 35mUnited Airlines
mié. 12/246:54 pmSUX - DEN
Nonstop1h 57mUnited Airlines
Deal found 10/14$254
This United Airlines deal was found by Cheapflights users on 10/14. 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.
vie. 12/123:35 pmDEN - SUX
Nonstop1h 35mUnited Airlines
jue. 12/256:54 pmSUX - DEN
Nonstop1h 57mUnited Airlines
Deal found 10/14$302
This United Airlines deal was found by Cheapflights users on 10/13. 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.
mar. 10/283:35 pmDEN - SUX
Nonstop1h 33mUnited Airlines
sáb. 11/16:46 pmSUX - DEN
Nonstop1h 48mUnited Airlines
Deal found 10/13$310
This United Airlines deal was found by Cheapflights users on 10/14. 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.
vie. 12/123:35 pmDEN - SUX
Nonstop1h 35mUnited Airlines
lun. 12/226:54 pmSUX - DEN
Nonstop1h 57mUnited Airlines
Deal found 10/14$312
This United Airlines deal was found by Cheapflights users on 10/14. 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.
dom. 12/143:35 pmDEN - SUX
Nonstop1h 35mUnited Airlines
jue. 12/256:54 pmSUX - DEN
Nonstop1h 57mUnited Airlines
Deal found 10/14$350
This United Airlines deal was found by Cheapflights users on 10/14. 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.
mar. 12/166:00 amDEN - SUX
1 stop15h 59mUnited Airlines
mié. 12/246:54 pmSUX - DEN
Nonstop1h 57mUnited Airlines
Deal found 10/14$357
This United Airlines deal was found by Cheapflights users on 10/14. 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.
vie. 11/73:35 pmDEN - SUX
Nonstop1h 33mUnited Airlines
sáb. 11/86:46 pmSUX - DEN
Nonstop1h 48mUnited Airlines
Deal found 10/14$360
This United Airlines deal was found by Cheapflights users on 10/14. 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.
vie. 12/123:35 pmDEN - SUX
Nonstop1h 35mUnited Airlines
dom. 12/216:54 pmSUX - DEN
Nonstop1h 57mUnited Airlines
Deal found 10/14$362
This United Airlines deal was found by Cheapflights users on 10/14. 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.
dom. 12/148:30 pmDEN - SUX
1 stop25h 29mUnited Airlines
mié. 12/246:54 pmSUX - DEN
Nonstop1h 57mUnited Airlines
Deal found 10/14$377
This United Airlines deal was found by Cheapflights users on 10/13. 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.
mar. 10/2810:34 amCOS - SUX
1 stop6h 34mUnited Airlines
sáb. 11/16:46 pmSUX - COS
1 stop4h 18mUnited Airlines
Deal found 10/13$459

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 octubre 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

jue. 11/13

3:35 pm-6:08 pm

Nonstop1h 33m

Sioux City Sioux Gateway

dom. 11/16

6:46 pm-7:34 pm

Nonstop1h 48m

$214

DenverSioux City

DEN - SUX

DENSUX

Denver Intl

mar. 10/28

3:35 pm-6:08 pm

Nonstop1h 33m

Sioux City Sioux Gateway

sáb. 11/1

6:46 pm-7:34 pm

Nonstop1h 48m

$310

DenverSioux City

DEN - SUX

DENSUX

Denver Intl

mié. 10/29

3:35 pm-6:08 pm

Nonstop1h 33m

Sioux City Sioux Gateway

dom. 11/2

6:46 pm-7:34 pm

Nonstop1h 48m

$310

DenverSioux City

DEN - SUX

DENSUX

Denver Intl

lun. 12/22

3:35 pm-6:13 pm

Nonstop1h 38m

Sioux City Sioux Gateway

lun. 12/29

6:54 pm-7:51 pm

Nonstop1h 57m

$310

DenverSioux City

DEN - SUX

DENSUX

Denver Intl

sáb. 12/13

3:35 pm-6:10 pm

Nonstop1h 35m

Sioux City Sioux Gateway

lun. 12/22

6:54 pm-7:51 pm

Nonstop1h 57m

$312

DenverSioux City

DEN - SUX

DENSUX

Denver Intl

jue. 12/18

3:35 pm-6:13 pm

Nonstop1h 38m

Sioux City Sioux Gateway

jue. 12/25

6:54 pm-7:51 pm

Nonstop1h 57m

$350

DenverSioux City

DEN - SUX

DENSUX

Denver Intl

dom. 12/14

3:35 pm-6:10 pm

Nonstop1h 35m

Sioux City Sioux Gateway

jue. 12/25

6:54 pm-7:51 pm

Nonstop1h 57m

$350

DenverSioux City

DEN - SUX

DENSUX

Denver Intl

mar. 12/16

6:00 am-10:59 pm

1 stop15h 59m

Sioux City Sioux Gateway

mié. 12/24

6:54 pm-7:51 pm

Nonstop1h 57m

$357

DenverSioux City

DEN - SUX

DENSUX

Denver Intl

mié. 10/22

3:40 pm-6:14 pm

Nonstop1h 34m

Sioux City Sioux Gateway

mar. 10/28

6:46 pm-7:34 pm

Nonstop1h 48m

$360

DenverSioux City

DEN - SUX

DENSUX

Denver Intl

jue. 12/18

3:35 pm-6:13 pm

Nonstop1h 38m

Sioux City Sioux Gateway

mar. 12/23

6:54 pm-7:51 pm

Nonstop1h 57m

$360

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/13

Showing 1-10 of 16 results
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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, November is the cheapest month in which you can book a flight from Colorado to Sioux City (average of $32). Flying from Colorado to Sioux City in April is currently the most expensive (average of $88). 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 octubre 14, 2025.

One of the essential ways to save on airfare from Colorado to Sioux City is to remain as flexible as possible. Flights that are at noon tend to be the most expensive. A flight in the evening could potentially save you up to 44% on airfare.

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 octubre 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 $306 for a flight from Colorado to Sioux City. The cheapest flight overall is $153 while the most popular route, (Denver Intl - Sioux City Sioux Gateway) is currently priced at $254.

  • 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, November is the cheapest month in which you can book a flight from Colorado to Sioux City (average of $32). Flying from Colorado to Sioux City in April is currently the most expensive (average of $88). 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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Alternative routes for Colorado to Sioux City

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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 octubre 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$214Average$345FlexibilityNo cancel feeOn-time69%

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