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Sioux City

$183+ Cheap flights from Colorado to Sioux City (SUX)

DEN — SUX
Dec 4 — Dec 111
Fri 12/4
Fri 12/11
1 adult, Economy
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Cheap flight deals from Colorado to Sioux City

Cheapest flights from Colorado to Sioux City

Thu 12/109:05 pm -
Nonstop1h 38m
Sun 12/136:44 pm -
Nonstop1h 56m
Deal found 11/2$274
Sun 11/159:05 pm -
Nonstop1h 38m
Thu 11/196:45 pm -
Nonstop1h 56m
Deal found 10/31$370
Wed 11/259:05 pm -
Nonstop1h 38m
Sat 11/286:45 pm -
Nonstop1h 56m
Deal found 11/4$408
Fri 11/209:05 pm -
Nonstop1h 38m
Mon 11/236:45 pm -
Nonstop1h 56m
Deal found 11/4$410
Wed 11/119:05 pm -
Nonstop1h 38m
Sun 11/156:45 pm -
Nonstop1h 56m
Deal found 10/31$420
Thu 12/243:25 pm -
1 stop25h 46m
Mon 1/46:46 pm -
Nonstop1h 59m
Deal found 11/4$513
Mon 11/99:05 pm -
Nonstop1h 38m
Tue 11/106:45 pm -
Nonstop1h 56m
Deal found 11/3$520
Wed 11/189:05 pm -
Nonstop1h 38m
Sun 11/226:00 am -
1 stop27h 46m
Deal found 11/2$554

Find flight deals from Colorado to Sioux City

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$274
(United Airlines)

One-way from

$183
(United Airlines)

Popular in

September

Cheapest in

July

Average price

$410
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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One-way flight from Colorado to Sioux City Sioux Gateway
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Highest demand for flights based on searches. 11% potential increase in price ($43 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 November 2026
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Cheapflights Fare Finder

 
Use the filters below to find and compare flights from Colorado to Sioux City that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

DenverSioux City

DEN Denver Intl - SUX Sioux City Sioux Gateway

DENSUX

Denver Intl

Sat 11/14

9:05 pm-11:43 pm

Nonstop1h 38m

Sioux City Sioux Gateway

Wed 12/31

12:00 am-11:00 pm

Nonstop0h 00m

$183

DenverSioux City

DEN Denver Intl - SUX Sioux City Sioux Gateway

DENSUX

Denver Intl

Thu 12/10

9:05 pm-11:43 pm

Nonstop1h 38m

Sioux City Sioux Gateway

Sun 12/13

6:44 pm-7:40 pm

Nonstop1h 56m

$274

DenverSioux City

DEN Denver Intl - SUX Sioux City Sioux Gateway

DENSUX

Denver Intl

Sun 11/15

9:05 pm-11:43 pm

Nonstop1h 38m

Sioux City Sioux Gateway

Thu 11/19

6:45 pm-7:41 pm

Nonstop1h 56m

$370

DenverSioux City

DEN Denver Intl - SUX Sioux City Sioux Gateway

DENSUX

Denver Intl

Fri 11/20

9:05 pm-11:43 pm

Nonstop1h 38m

Sioux City Sioux Gateway

Mon 11/23

6:45 pm-7:41 pm

Nonstop1h 56m

$410

DenverSioux City

DEN Denver Intl - SUX Sioux City Sioux Gateway

DENSUX

Denver Intl

Thu 12/24

3:25 pm-6:11 pm

1 stop25h 46m

Sioux City Sioux Gateway

Mon 1/4

6:46 pm-7:45 pm

Nonstop1h 59m

$513

DenverSioux City

DEN Denver Intl - SUX Sioux City Sioux Gateway

DENSUX

Denver Intl

Wed 11/25

4:24 pm-3:50 pm

1 stop22h 26m

Sioux City Sioux Gateway

Sat 11/28

6:45 pm-7:41 pm

Nonstop1h 56m

$543

DenverSioux City

DEN Denver Intl - SUX Sioux City Sioux Gateway

DENSUX

Denver Intl

Sun 11/22

9:05 pm-11:43 pm

Nonstop1h 38m

Sioux City Sioux Gateway

Tue 11/24

6:45 pm-7:41 pm

Nonstop1h 56m

$634

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/31

Sorted by cheapest first

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

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, July is the cheapest month in which you can book a flight from Colorado to Sioux City (average of $234). Flying from Colorado to Sioux City in September is currently the most expensive (average of $480). 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?

One of the essential ways to save on airfare from Colorado to Sioux City is to remain as flexible as possible. Flights that are in the afternoon tend to be the most expensive. A flight in the morning could potentially save you up to 23% on airfare.

Related info for your journey

  • 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 38m. 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.

  • 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, July is the cheapest month in which you can book a flight from Colorado to Sioux City (average of $234). Flying from Colorado to Sioux City in September is currently the most expensive (average of $480). 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

Browse thousands of different options on Cheapflights for your next trip

Top airline flying from Colorado to Sioux City

AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$214Average$274FlexibilityNo cancel feeOn-time69%

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