$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 4/13. 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

Sat, Apr 11 - Tue, Apr 28
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
$214United Airlines
Fri, Aug 21 - Tue, Aug 25
United Airlines Logo
6:30 pm - 7:24 pm
SUX
-
DEN
1h 54mnonstop
United Airlines Logo
8:15 am - 10:55 am
DEN
-
SUX
1h 40mnonstop
$254United Airlines
Wed, Apr 1 - Tue, Apr 7
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
$262United Airlines
Thu, Jun 18 - Tue, Jun 23
United Airlines Logo
6:30 pm - 7:24 pm
SUX
-
DEN
1h 54mnonstop
United Airlines Logo
8:15 am - 10:57 am
DEN
-
SUX
1h 42mnonstop
$282United Airlines
Sat, Aug 1 - Mon, Aug 31
United Airlines Logo
11:32 am - 12:26 pm
SUX
-
DEN
1h 54mnonstop
United Airlines Logo
9:08 pm - 11:46 pm
DEN
-
SUX
1h 38mnonstop
$285United Airlines
Wed, Apr 1 - Tue, Apr 7
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
$310United Airlines
Tue, Sep 1 - Sat, Sep 5
United Airlines Logo
6:30 pm - 7:24 pm
SUX
-
DEN
1h 54mnonstop
United Airlines Logo
8:15 am - 10:55 am
DEN
-
SUX
1h 40mnonstop
$350United Airlines
Thu, Jul 2 - Mon, Jul 6
United Airlines Logo
11:32 am - 12:26 pm
SUX
-
DEN
1h 54mnonstop
United Airlines Logo
8:15 am - 10:57 am
DEN
-
SUX
1h 42mnonstop
$360United Airlines
Sat, Apr 11 - Tue, Apr 28
United Airlines Logo
12:55 pm - 10:10 pm
SUX
-
DEN
10h 15m
1 stop
United Airlines Logo
8:05 am - 10:46 am
DEN
-
SUX
1h 41mnonstop
$389United Airlines
Tue, Sep 1 - Sat, Sep 5
United Airlines Logo
6:30 pm - 7:24 pm
SUX
-
DEN
1h 54mnonstop
United Airlines Logo
4:45 pm - 5:53 pm
DEN
-
SUX
24h 08m
1 stop
$396United 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.

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 $266 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 $266.

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

The average price for all round-trip flights from Sioux City to Colorado depending on the time of departure, clicked by users on KAYAK in the last 2 weeks.

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 32% 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 $473.

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 $302, 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 February, 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 Wednesday and more expensive on a Sunday. On your return trip to Sioux City, you should consider flying back on a Saturday, 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 27% drop in price.
Most popular time to fly and prices are also 14% 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.

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 $242 one-way - $338 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 9450 reviews
7.1Entertainment
7.3Comfort
6.6Food
7.7Boarding
8.1Crew
Airline reviews

Seats are uncomfortable. This has been a trend in the industry for decades. Trying to fit more seats on each plane to increase profits at the expense of the passenger.

6.0 GoodAnonymous, Mar 2026
SFO - DEN
Read more United Airlines reviews

Seats are uncomfortable. This has been a trend in the industry for decades. Trying to fit more seats on each plane to increase profits at the expense of the passenger.

It’s always a great time flying with united airlines.

We got delayed three hours and nobody thought to have the bathroom fixed while we were sitting waiting to board? took a full hour to have maintenance come and check it off. Had to shut the bathroom down twice so that the pilots could go to the bathroom. Everyone missed their connections.

Women boarding passengers at the gate was absolutely rude and disrespectful of passengers. The flight attendant was absolutely delightful! Smiling and connected with the passengers. So happy. The seats are cramped and uncomfortable but I guess that’s just the way it is Communication regarding flight was excellent

As great a red-eye flight as red-eye flights can be.

Both of my flights arrived early and check in process was smooth

Everything was on time Will use united again for sure

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.

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

Information on your arrival and departure airports

Sioux City (SUX)