$158 Find Cheap Flights from Sioux City to Colorado

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Sioux City to Colorado departing on 2/19. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Colorado

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Sioux City to Colorado, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Sioux City to Colorado, as well as popular online travel agencies
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Flight Deals

Book Cheap Sioux City to Colorado Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Sioux City to Colorado that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Sioux City to Colorado

Fri, Mar 13 - Mon, Mar 16
United Airlines Logo
6:10 am - 7:04 am
SUX
-
DEN
1h 54mnonstop
United Airlines Logo
8:05 am - 10:45 am
DEN
-
SUX
1h 40mnonstop
$214United Airlines
Sat, Apr 25 - Wed, Apr 29
United Airlines Logo
6:00 am - 6:53 am
SUX
-
DEN
1h 53mnonstop
United Airlines Logo
8:05 am - 10:46 am
DEN
-
SUX
1h 41mnonstop
$254United Airlines
Fri, Feb 20 - Sun, Feb 22
United Airlines Logo
6:46 pm - 7:40 pm
SUX
-
DEN
1h 54mnonstop
United Airlines Logo
8:05 am - 10:45 am
DEN
-
SUX
1h 40mnonstop
$262United Airlines
Thu, Feb 19 - Mon, Feb 23
United Airlines Logo
6:00 am - 6:54 am
SUX
-
DEN
1h 54mnonstop
United Airlines Logo
8:05 am - 10:45 am
DEN
-
SUX
1h 40mnonstop
$302United Airlines
Sun, Jul 26 - Sat, Aug 1
United Airlines Logo
6:00 am - 6:57 am
SUX
-
DEN
1h 57mnonstop
United Airlines Logo
9:00 pm - 11:42 pm
DEN
-
SUX
1h 42mnonstop
$310United Airlines
Thu, Mar 12 - Sat, Mar 14
United Airlines Logo
6:10 am - 7:04 am
SUX
-
DEN
1h 54mnonstop
United Airlines Logo
8:05 am - 10:45 am
DEN
-
SUX
1h 40mnonstop
$350United Airlines
Fri, Feb 27 - Fri, Mar 6
United Airlines Logo
6:00 am - 6:54 am
SUX
-
DEN
1h 54mnonstop
United Airlines Logo
9:04 pm - 11:41 pm
DEN
-
SUX
1h 37mnonstop
$362United Airlines
Fri, Feb 27 - Fri, Mar 6
United Airlines Logo
1:00 pm - 3:57 pm
SUX
-
DEN
27h 57m
1 stop
United Airlines Logo
9:04 pm - 11:41 pm
DEN
-
SUX
1h 37mnonstop
$376United Airlines
Sat, Apr 25 - Wed, Apr 29
United Airlines Logo
12:55 pm - 10:05 pm
SUX
-
DEN
10h 10m
1 stop
United Airlines Logo
8:05 am - 10:46 am
DEN
-
SUX
1h 41mnonstop
$394United Airlines
Fri, Feb 27 - Fri, Mar 6
United Airlines Logo
1:00 pm - 2:55 pm
SUX
-
DEN
26h 55m
2 stops
United Airlines Logo
8:05 am - 10:45 am
DEN
-
SUX
1h 40mnonstop
$400United Airlines
Booking Insights

KAYAK's insights & trends for Sioux City to Colorado flights

Get data-powered insights and trends into flights from Sioux City to Colorado to help you find the cheapest flights, the best time to fly and much more.

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

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Sioux City to Colorado departing in March.

What is the cheapest Sioux City to Colorado flight route?

Data is based on round-trip flight searches on KAYAK over the past month.

The cheapest ticket to Colorado from Sioux City found in the last 72 hours was to Denver, at $214 round-trip. The most popular route is from Sioux City (SUX) to Denver (DEN), and the cheapest round-trip airline ticket found on this route in the last 72 hours was $214.

Can I save money by flying with a layover from Sioux City to Colorado?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

No, with an average price for the route of $214, prices are generally cheapest when you fly direct.

What is the cheapest month to fly from Sioux City to Colorado?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Sioux City to Colorado, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Sioux City to Colorado is March, when tickets cost $214 (return) on average. On the other hand, the most expensive months are May and December, when the average cost of round-trip tickets is $395 and $360 respectively.

What’s the cheapest day of the week to fly from Sioux City to Colorado?

The average price of all round-trip flights from Sioux City to Colorado clicked on KAYAK for each day over the last 12 months.

Your flight ticket price will generally be cheaper if you fly to Colorado on a Friday and more expensive on a Sunday. On your return trip to Sioux City, you should consider flying back on a Sunday, and avoid Tuesdays for better deals.

Find deals

Good to know

Low seasonNovember
Cheapest flight$158
Best time to beat the crowds with an average 24% drop in price.
Most popular time to fly and prices are also 1% lower on average.
Flight from Sioux City to Denver

FAQs - booking Colorado flights

  • How does KAYAK find such low prices on flights from Sioux City to Colorado?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Sioux City to Colorado.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Sioux City to Colorado?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Sioux City to Colorado is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Sioux City to Colorado?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from Sioux City to Colorado with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Sioux City to Colorado?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from Sioux City to Colorado up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest time of day to fly to Colorado?

    The cheapest time of day to fly to Colorado is generally at night, when round-trip flights cost $160 on average. Morning departures are around 23% more expensive than evening flights, on average. The most expensive time of day to fly to Colorado is generally in the morning, which is peak travel time and where the average cost of a ticket is $458.

Top tips for finding cheap flights to Colorado

  • Looking for a cheap flight? 25% of our users found tickets from Sioux City to the following destinations at these prices or less: Denver $229 one-way - $296 round-trip

Reviews of the top airline flying from Sioux City to Colorado

 
See real verified KAYAK customer reviews for airlines flying from Sioux City to Colorado. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Sioux City to Colorado? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
United AirlinesOverall score based on 9222 reviews
7.3Comfort
8.1Crew
7.7Boarding
6.6Food
7.1Entertainment
Airline reviews

The flight was delayed by two de-icings. The seatbelt did not work correctly. It did not stay tight.

6.0 GoodAnonymous, Jan 2026
MKE - DEN
Read more United Airlines reviews

The flight was delayed by two de-icings. The seatbelt did not work correctly. It did not stay tight.

Hotter than Hades in August. Why, why do crews think that in the winter when we are already dressed for cold weather we need a cabin that is 82 degrees. Even the vents were blowing hot air.

Flight was delayed. De-icing took a while. When we landed had to wait for another plane to vacate our gate. Just an overall bad experience.

Not good - outbound flight was delayed and missed my connection even though I got to the gate after running through the airport - the agent would not let me on because the door was closed (flight had not left). There was no notification from United - overall experience was very disappointing. Additionally, I was downgraded from first class to coach on the alternative flight

United have really come back. Airport and boarding process is clear and good, app and information also very good

The entertainment available didn’t work for anyone on the flight. Long 6 hr flight with no entertainment option and the staff didn’t know until an hour into the flight when we made sure they knew about it. They had no way to fix it.

Late FA meant slow boarding. WiFi did not work. I’m a medium plus sized passenger. The seatbelt was for the first time ever barely fitting. And we delayed on the tarmac 40 min

My husband and I had boarded the flight from Denver to Chicago, and one of the last passengers to get on the plane opened the overhead bin above my husband's seat and threw his bag out of the bin to make space for his own. He said, "Mine is bigger!" The flight attendant supported the new passenger. They didn't care that my husband has two artificial knees and must have the foot room in front of his seat to be able to fit his legs in -- and to be able to stand, much less walk, at the end of the flight. I have never seen this happen before, and it was a disaster.

Terrible. They wouldn't allow me on my flight on the 14th..

I understand stuff happens, but plane failures are likely due to lack of maintenance. Additionally, air conditioning wasn't working, no snack/drink service, no WiFi. Fortunately, the crew was communicative and light-hearted. United grabbed another plane and we were able to get to our destination.

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

Information on your arrival and departure airports

Sioux City (SUX)