$214 Find Cheap Flights from Sioux City to Colorado

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from Sioux City to Colorado departing on 10/8. 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

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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

Cheap Flights from Sioux City to Colorado

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Denver
Denvernonstop$214
Denver
Denvernonstop$214

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

Wed, Oct 8 - Wed, Oct 15
United Airlines Logo
6:51 pm - 7:40 pmSUX-DEN
1h 49mnonstop
United Airlines Logo
3:40 pm - 6:14 pmDEN-SUX
1h 34mnonstop
$214United Airlines
Find Deal
Wed, Dec 24 - Tue, Dec 30
United Airlines Logo
6:54 pm - 7:51 pmSUX-DEN
1h 57mnonstop
United Airlines Logo
3:35 pm - 6:13 pmDEN-SUX
1h 38mnonstop
$254United Airlines
Find Deal
Thu, Oct 16 - Mon, Oct 20
United Airlines Logo
6:51 pm - 7:40 pmSUX-DEN
1h 49mnonstop
United Airlines Logo
3:40 pm - 6:14 pmDEN-SUX
1h 34mnonstop
$256United Airlines
Find Deal
Fri, Oct 10 - Thu, Oct 16
United Airlines Logo
6:51 pm - 7:40 pmSUX-DEN
1h 49mnonstop
United Airlines Logo
3:40 pm - 6:14 pmDEN-SUX
1h 34mnonstop
$262United Airlines
Find Deal
Mon, Dec 22 - Mon, Dec 29
United Airlines Logo
6:54 pm - 7:51 pmSUX-DEN
1h 57mnonstop
United Airlines Logo
3:35 pm - 6:13 pmDEN-SUX
1h 38mnonstop
$302United Airlines
Find Deal
Tue, Sep 30 - Sat, Oct 4
United Airlines Logo
6:51 pm - 7:40 pmSUX-DEN
1h 49mnonstop
United Airlines Logo
3:40 pm - 6:14 pmDEN-SUX
1h 34mnonstop
$310United Airlines
Find Deal
Thu, Dec 25 - Mon, Dec 29
United Airlines Logo
6:54 pm - 7:51 pmSUX-DEN
1h 57mnonstop
United Airlines Logo
3:35 pm - 6:13 pmDEN-SUX
1h 38mnonstop
$312United Airlines
Find Deal
Tue, Mar 3 - Sat, Mar 7
United Airlines Logo
6:00 am - 6:57 amSUX-DEN
1h 57mnonstop
United Airlines Logo
8:05 am - 10:39 amDEN-SUX
1h 34mnonstop
$350United Airlines
Find Deal
Tue, Dec 9 - Tue, Dec 16
United Airlines Logo
6:52 pm - 7:40 pmSUX-DEN
1h 48mnonstop
United Airlines Logo
8:33 pm - 10:59 pmDEN-SUX
25h 26m2 stops
$357United Airlines
Find Deal
Thu, Oct 16 - Mon, Oct 20
United Airlines Logo
6:51 pm - 7:40 pmSUX-DEN
1h 49mnonstop
United Airlines Logo
7:07 pm - 11:00 pmDEN-SUX
26h 53m1 stop
$359United Airlines
Find Deal
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.

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 July, when the average cost of round-trip tickets is $435 and $405 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 Thursday and more expensive on a Sunday. On your return trip to Sioux City, you should consider flying back on a Friday, and avoid Mondays for better deals.

Good to know

Low seasonJanuary
Cheapest flight$214
Best time to beat the crowds with an average 4% drop in price.
Most popular time to fly and prices are also 18% 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 100% cheaper than evening flights, on average. The most expensive time of day to fly to Colorado is generally in the afternoon, which is peak travel time and where the average cost of a ticket is $564.

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 $257 one-way - $268 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 8929 reviews
6.6Food
7.3Comfort
7.1Entertainment
7.7Boarding
8.1Crew
Airline reviews

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.

6.0 GoodMarydoug, Aug 2025SJC - DEN
Read more United Airlines reviews

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.

Had to cancel first flight because Airporter Bus took over 3 hrs to get to airport which resulted in an extra $378 dollar fare . Is there anyway I can be reimbursed for initial fare since it was not my fault? Sent from my iPhone EJ Ledet

Excellent flight. Boarding was efficient and departure was on time. Smooth flight with on time arrival. Deplaning was also efficient.

Our flight was understandably diverted to a small regional airport in Laramie, Wyoming due to weather conditions, which I fully recognize and appreciate. However, the low rating stems from the experience that followed: passengers remained on board for over an hour without the option to deplane and stretch, despite the aircraft being stationary. Although the pilot opened the cabin door, only he was permitted to exit. Meanwhile, passengers grew increasingly uncomfortable as warm summer air entered the cabin through the open door, and being in the second row meant we were impacted immediately. While the flight attendants made efforts to keep everyone at ease, I believe allowing passengers to deplane briefly, given the extended delay, would have significantly improved the overall experience.

I never flew. Flight was canceled. DIA worst airport in the country. Avoid at all costs.

Very rough getting into denver. my kid threw up it was so rough.

Why wasn't this flight departure scheduled eith another crew so that it could leave on time? When we arrived in Denver we had so little time between flights we had run to the connecting flight. We should received some credit for the inconvenience.

I was supposed to be on business class at first class from Denver back to Miami due to weather changes. I missed my connection and it’s put on a flight to Fort Lauderdale. Instead of honoring my business class/1st class ticket, they put me in coach, but there were two first class seats open. I think it’s absolutely disgusting that I paid for first class $1300 ticket and they put me in economy and they had to open seats available and I have still not been refunded the difference. I ended up having to eat a snack box instead of the meal I was supposed to get and did not get home till 2 AM so I think that’s a little pathetic that I had to live off crackers for dinner And my poor dog ate some cheese and salami. Oh yes, apparently when they switched me to the new flight they forgot to mention I had a service dog

Excellent service despite turbulence during the flight. Flight attendants were remarkable!

Flight attendant moved my bag without notifying me and was rude to me when I asked him about it. There was no reason to move it.

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

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