$70 Find Cheap Flights from Sioux Falls to Colorado - Compare and Save

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 Falls to Colorado departing on 9/4. 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.
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Cheap Flights from Sioux Falls to Colorado

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Denver
Denvernonstop$140
Denver
Denvernonstop$140

Book Cheap Sioux Falls 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 Falls 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 Falls to Colorado

Wed, Aug 5 - Mon, Aug 10
Frontier Logo
8:08 pm - 9:01 pm
FSD
-
DEN
1h 53mnonstop
Frontier Logo
4:42 pm - 7:23 pm
DEN
-
FSD
1h 41mnonstop
$140Frontier
Mon, Jul 27 - Wed, Jul 29
Frontier Logo
8:08 pm - 9:01 pm
FSD
-
DEN
1h 53mnonstop
Frontier Logo
4:42 pm - 7:23 pm
DEN
-
FSD
1h 41mnonstop
$154Frontier
Mon, Jul 20 - Fri, Jul 24
Frontier Logo
8:08 pm - 9:01 pm
FSD
-
DEN
1h 53mnonstop
Frontier Logo
4:42 pm - 7:23 pm
DEN
-
FSD
1h 41mnonstop
$168Frontier
Fri, Aug 21 - Mon, Aug 24
Frontier Logo
8:56 pm - 9:49 pm
FSD
-
DEN
1h 53mnonstop
Frontier Logo
5:18 pm - 8:01 pm
DEN
-
FSD
1h 43mnonstop
$185Frontier
Fri, Aug 7 - Tue, Aug 11
Multiple Airlines Logo
8:08 pm - 9:01 pm
FSD
-
DEN
1h 53mnonstop
Multiple Airlines Logo
10:29 pm - 2:49 pm
DEN
-
FSD
15h 20m
1 stop
$202Multiple Airlines
Wed, Aug 5 - Tue, Aug 11
Multiple Airlines Logo
8:08 pm - 9:01 pm
FSD
-
DEN
1h 53mnonstop
Multiple Airlines Logo
10:29 pm - 2:49 pm
DEN
-
FSD
15h 20m
1 stop
$203Multiple Airlines
Fri, Aug 28 - Mon, Aug 31
United Airlines Logo
6:00 am - 8:40 am
FSD
-
COS
3h 40m
1 stop
United Airlines Logo
5:30 am - 10:43 am
COS
-
FSD
4h 13m
1 stop
$309United Airlines
Wed, Jul 22 - Thu, Jul 30
United Airlines Logo
9:30 am - 12:23 pm
FSD
-
COS
3h 53m
1 stop
United Airlines Logo
6:32 pm - 11:53 pm
COS
-
FSD
4h 21m
1 stop
$324United Airlines
Thu, Sep 10 - Sun, Sep 13
American Airlines Logo
5:55 pm - 10:55 pm
FSD
-
COS
6h 00m
1 stop
American Airlines Logo
5:41 am - 12:16 pm
COS
-
FSD
5h 35m
1 stop
$414American Airlines
Wed, Sep 16 - Sat, Sep 19
American Airlines Logo
7:00 am - 12:48 pm
FSD
-
COS
6h 48m
1 stop
American Airlines Logo
5:41 am - 12:16 pm
COS
-
FSD
5h 35m
1 stop
$427American Airlines
Booking Insights

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

Get data-powered insights and trends into flights from Sioux Falls 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 Falls 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 Falls to Colorado departing in August.

What is the cheapest Sioux Falls 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 Falls found in the last 5 days was to Denver, at $249 round-trip. The most popular route is from Sioux Falls (FSD) to Denver (DEN), and the cheapest round-trip airline ticket found on this route in the last 5 days was $249.

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

The average price for all round-trip flights from Sioux Falls 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 $210 on average. Morning departures are around 1% cheaper than evening flights, on average. The most expensive time of day to fly to Colorado is generally in the evening, which is peak travel time and where the average cost of a ticket is $421.

Can I save money by flying with a layover from Sioux Falls 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 $319, prices are generally cheapest when you fly direct.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Sioux Falls 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 Falls to Colorado is December, when tickets cost $34 (return) on average. On the other hand, the most expensive months are May and April, when the average cost of round-trip tickets is $178 and $100 respectively.

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

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

If you are looking for a flight deal from Sioux Falls to Colorado, look for departures on Fridays and avoid leaving on a Sunday, as it's usually the priciest day. When flying back from Colorado, Friday is the cheapest day to fly and Sunday is the most expensive.

How far in advance should I book a flight from Sioux Falls to Colorado?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Sioux Falls to Colorado, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Sioux Falls to Colorado, you should book around 2 weeks before departure, which saves you about 33% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 11 weeks before departure.

Good to know

Low seasonApril
Cheapest flight$70
Best time to beat the crowds but there is an average 11% increase in price.
Most popular time to fly and prices are also 15% lower on average.
Flight from Sioux Falls to Denver

FAQs - booking Colorado flights

  • How does KAYAK find such low prices on flights from Sioux Falls 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 Falls to Colorado.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Sioux Falls 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 Falls 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 Falls 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 Falls 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 Falls 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 Falls to the following destinations at these prices or less: Denver $167 one-way - $333 round-trip

Reviews of the top airlines flying from Sioux Falls to Colorado

 
See real verified KAYAK customer reviews for airlines flying from Sioux Falls 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 Falls 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 9953 reviews
8.1Crew
6.7Food
7.7Boarding
7.1Entertainment
7.3Comfort
Airline reviews

Checking bag at terminal was horrible. No agents to check us in and only 1 kiosk working. Boarding went ok. Crew onboard was very scattered rained. Missed our row while serving and then didn’t see them hardly again.

4.0 OkayDavid, Jun 2026
FAR - DEN
Read more United Airlines reviews

Checking bag at terminal was horrible. No agents to check us in and only 1 kiosk working. Boarding went ok. Crew onboard was very scattered rained. Missed our row while serving and then didn’t see them hardly again.

The entertainment is a bit limited, it would be better if they added some games to play besides the movies and tv shows. But the seats are comfortable and the crew is polite

Food was great. Staff was phenomenal. Seats were a bit hard and could use a lot more entertainment options as far as movies to choose from. WiFi was good. Overall great trip.

Read the fine print. This was my flight home. I booked my flight for the quickest way home. Had a carry-on and a personal item. Same as my outbound flight. Apparently I needed to pre-pay extra for my carry-on. When I checked in, I was told that I had to check it. I said I’ll pay for it, and was told that this wasn’t an option anymore. They said I still had to pay $50 to check my carry-on. I told them I’ll pay whatever to just carry it in as intended. I was not allowed, so eventually I paid $50 to check my carry-on under a plane that was half full, with overhead compartments that were even less full. My white carry-on suitcase was practically destroyed getting from Idaho falls to Denver to Orange County. The low price air fair was a bait and switch. Got me to the gate, made me pay extra, then didn’t even allow me to pay for a carry on. Not to mention that I paid the $8 for WiFi that didn’t work. All to get my suitcase destroyed. I don’t think I’m going to even keep my Untied mileage plus membership and card. Apparently, membership does not have its privileges for this one.

I flew from Santa Fe to Denver to catch a flight to London and the transfer of my luggage on arrival at Denver to the London flight worked perfectly. The crew on the ground and on board for the London flight were so friendly and efficient.

It was a short flight so I was expecting too much

Late- that’s what United does best. Missed my connection, rebooked to a flight 17 hours later and had to spend $500 on a hotel. What did I get? A $15 meal voucher. What can you get in an airport for $15. I hate United so much.

It was good overall except from Omaha to Denver when flight a was a repeatedly delayed apparently due to some issue at Denver. Communications could have been handled better. I had to board then deboard with luggage and board again

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.

My flight was 3 hours late, which caused me to miss my connection in Denver. Further, this connecting flight was then Later canceled. This required me to stay another night an hour and a half away, and rent the rental car for an additional Night. I am still waiting for United Airlines to reimburse me for the inconvenience and Expense of having to extend my rental Car for An additional Day. See attached receipt. https://share.icloud.com/photos/0f5ns2AaeIr7w6t_uH1qfPBUg

It was awful ....my first time flying on it and I will NEVER fly it again ....everything about it was terrible .....most especially the flight attendants

There weren't enough employees at check in took awhile to get bags checked. There wasn't a wheel chair for me, I was sent to someone who turns out to work for a different airline, if My flight hadn't been delayed I probably would have missed my flight as it was, by the time I arrived at my gate, they started boarding in about 15 minutes. I don't know who took me to my gate, definitely was not the normal people who take passengers to the gate. I'm guessing she may have been in a management position. I wish I knew her name, she went beyond to help me. With that said everyone was kind, and were doing the best they could. So, I choose to say it was an Adventure, stressful start, but good. In the end went well. The situation was not only difficult for passengers but the employee's.

Frontier scheduled a 40 minute connection in DEN. What they failed to mention was that they “close the doors” 20 mins prior to departure, which means you only have 20 mins. Not enough time. Possibly against DOT regulations. Filing complaint.

It was an early flight and most people napped/slept and the crew let us which was nice.

More inflight connection. And leg space is horrible. And the paying for baggage I'd ridiculous!!!

It was costly and difficult to check in. $85 to take a small suitcase with me, carry on or checked and $75 on the return trip, Plus $25 if I didn't check my self in check in $25, because I couldn't do it on the kiosk. Small very uncomfortable seats, waited on the runway for near an hour each way. It was my worst flight to date.

Due to weather, my flight was delayed, further delayed, then canceled. I eventually got through to a support person who helped me find a different route out of MSP, but to get to DIA, they didn't want to, but eventually did help with the connection ticket purchase. But even this replacement flight was delayed time and time again, and I would have missed my connecting flights and I didn't want to get stuck in a layover city, so after 12 hours at the airport with two young boys who were very tired, we just cancelled our plans and spent the week at home, instead of Nana's.

I knew going into this that Frontier, being a low cost carrier, would be pretty bare bones and charge for most extras but this was made up for by the fact that the airplane was a reasonably new Airbus, every employee was great and best of all, Everett Washington is an amazing airport - thanks Frontier for flying there!!!

Seats were new and comfortable. Staff was fine. Missed my connection due to weather -which wasn’t their fault- but got no help at all. Gate staff sent me to customer service, which was and stayed unstaffed. Sign with QR code directed me to call or chat. Chat was useless. Call was returned after an hour. No itinerary offered by Frontier could get me home in less than 30 hours. Rebooked with another airline and got a partial refund that came to about 10 percent of what I paid to get home.

One gate agent in Sioux Falls ruined it for a few people on the flight. It was the usual, that personal item is too large, you are going to have to pay $100 to get it on the flight. One family with a baby were told that they had to have a passport for the baby to get on the flight. Also a Sheriff's Deputy needed to go on the airplane to return a lost cell phone to a minor on the flight. The gate agent would NOT let him go on without a boarding pass. I don't know who this moron was, but the sooner Frontier moves him where he can't interact with people, the better off they will be. Let's just say the deputy did the job that he needed to do and returned the phone to the minor on the plane, even with argument from a gate agent that thought he had way more power than he actually does. Very IRRITATING individual.

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

Information on your arrival and departure airports