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SUX - DEN

Find cheap flights from Sioux City to Denver from $100

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 Denver departing on 9/17. 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
0 bags
dom. 5/26
dom. 6/2

Search hundreds of travel sites at once for deals on flights to Denver

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Sioux City to Denver, 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 Denver, as well as popular online travel agencies
In the last 7 days travelers have searched 44,335,567 times on KAYAK, and here is why:

Save 22% or moreCompare multiple travel sites with one search.

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Filter your dealsChoose cabin class, free Wi-Fi and more.

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Cheap flight deals from Sioux City to Denver (SUX-DEN)

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Sioux City to Denver 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 and deals for you by selecting your travel dates.
Choose your dates
3:31 pm - 4:15 pmSUX-DEN
1h 44mnonstop
12:20 pm - 2:54 pmDEN-SUX
1h 34mnonstop
$194United Airlines
Find Deal
jue., sep. 12 - mar., sep. 17
3:31 pm - 4:15 pmSUX-DEN
1h 44mnonstop
12:20 pm - 2:54 pmDEN-SUX
1h 34mnonstop
$214United Airlines
Find Deal
jue., ago. 22 - lun., ago. 26
6:50 pm - 7:34 pmSUX-DEN
1h 44mnonstop
3:40 pm - 6:14 pmDEN-SUX
1h 34mnonstop
$236United Airlines
Find Deal
mar., may. 14 - mié., may. 15
6:54 pm - 7:43 pmSUX-DEN
1h 49mnonstop
8:30 am - 11:05 amDEN-SUX
1h 35mnonstop
$237United Airlines
Find Deal
jue., may. 23 - dom., may. 26
7:45 am - 10:52 pmSUX-DEN
16h 07m1 stop
12:20 pm - 2:54 pmDEN-SUX
1h 34mnonstop
$302United Airlines
Find Deal
jue., ago. 22 - lun., ago. 26
3:31 pm - 4:15 pmSUX-DEN
1h 44mnonstop
6:03 am - 10:52 pmDEN-SUX
15h 49m1 stop
$303United Airlines
Find Deal
jue., sep. 12 - mar., sep. 17
6:26 am - 8:55 amSUX-DEN
27h 29m1 stop
3:47 pm - 6:26 pmDEN-SUX
1h 39mnonstop
$326United Airlines
Find Deal
lun., may. 27 - sáb., jun. 1
7:45 am - 10:00 pmSUX-DEN
15h 15m2 stops
12:20 pm - 2:54 pmDEN-SUX
1h 34mnonstop
$335United Airlines
Find Deal
jue., ago. 22 - lun., ago. 26
6:54 pm - 7:43 pmSUX-DEN
1h 49mnonstop
6:00 am - 10:53 pmDEN-SUX
15h 53m1 stop
$337United Airlines
Find Deal
mar., may. 28 - sáb., jun. 1
6:54 pm - 7:43 pmSUX-DEN
1h 49mnonstop
8:00 am - 10:53 pmDEN-SUX
13h 53m1 stop
$346United Airlines
Find Deal
jue., may. 23 - dom., may. 26

Flights from Sioux City to Denver - Travel Insights & Trends

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

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

The average price of all flights from Sioux City to Denver clicked on KAYAK for each day over the last 12 months.
For Sioux City to Denver, Monday is the cheapest day to fly on average and Tuesday is the most expensive. Flying from Denver back to Sioux City, the best deals are generally found on Sunday, with Saturday being the most expensive.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Sioux City to Denver, 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 Denver is April, where tickets cost $198 on average. On the other hand, the most expensive months are November and March, where the average cost of tickets is $371 and $344 respectively.

How far in advance should I book a flight from Sioux City to Denver?

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from Sioux City to Denver, removes the top 0.1% to account for outliers, and then takes the average of all the values for each month.
To get a below average price on the flight from Sioux City to Denver, you should book around 2 weeks before departure. For the absolute cheapest price, our data suggests you should book 23 days before departure.

Which airlines fly non-stop between Sioux City and Denver?

Airline and price data is aggregated from results in KAYAK’s search results from the last 2 weeks for flights from Sioux City to Denver.
There is just one airline that flies from Sioux City to Denver direct and that is United Airlines. The best one-way deal found from United Airlines for the route is $198.

How many flights are there between Sioux City and Denver per day?

Each day, there are 2 nonstop flights that take off from Sioux City and land in Denver, with an average flight time of 1h 46m. The most common departure time is 6:00 pm and most flights take off in the evening. Each week, there are 14 flights and there are the same amount of flights each day 2.

Which cabin class options are there for flights between Sioux City and Denver?

The average price of flights for each cabin class for the route found by users searching on KAYAK over the last 2 weeks.
There is only one cabin class option available for the route, which is Economy. Perform a search on KAYAK to find the latest prices and availability for all cabin fares, which differ across airlines.

How long does a flight from Sioux City to Denver take?

The duration of a nonstop flight to Denver from Sioux City is typically 1h 44m. The journey crosses a distance of 465 miles.

What’s the earliest departure time from Sioux City to Denver?

Early birds can take the earliest flight from Sioux City at 11:55 am and will be landing in Denver at 12:41 pm.

What’s the latest departure time from Sioux City to Denver?

If you prefer to fly at night, the latest flight from Sioux City to Denver jets off at 7:01 pm and lands at 7:50 pm.

Good to know

Low season

January

High season

September

Cheapest flight

$100
Best time to beat the crowds but there is an average 9% increase in price.
Most popular time to fly and prices are also 12% lower on average.
Flight from Sioux City to Denver

When to book flights from Sioux City to Denver

Are your dates flexible? Find out the best times to travel from Sioux City to Denver based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Sioux City to Denver

  • What is the cheapest flight from Sioux City to Denver?

    In the last 3 days, the lowest price for a flight from Sioux City to Denver was $100 for a one-way ticket and $194 for a round-trip.

  • Do I need a passport to fly between Sioux City and Denver?

    No, a passport isn't needed to fly from Sioux City to Denver. However, local authorities might ask for an official ID.

  • Which aircraft models fly most regularly from Sioux City to Denver?

    The Canadair (Bombardier) Regional Jet is the aircraft model that flies most regularly on the Sioux City to Denver flight route.

  • Which airline alliances offer flights from Sioux City to Denver?

    Star Alliance is the only airline alliance operating flights between Sioux City and Denver.

  • On which days can I fly direct from Sioux City to Denver?

    There are nonstop flights from Sioux City to Denver on a daily basis.

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

    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 Denver.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Denver from Sioux City 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 Denver?

    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 to Denver with an airline and back to Sioux City with another airline. Booking your flights between Sioux City and DEN can sometimes prove cheaper using this method.

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

    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 to Denver from Sioux City up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top tips for finding a cheap flight from SUX to Denver

  • Looking for a cheap flight? 25% of our users found flights on this route for $230 or less one-way and $277 or less round-trip.

Prefer to fly non-stop from Sioux City to Denver?

Find which airlines fly direct from Sioux Gateway to Denver Intl, which days they fly and book direct flights.

Nonstop departures

Sioux City Sioux Gateway to Denver Intl

Monday

United Airlines

United Airlines

Tuesday

United Airlines

United Airlines

Wednesday

United Airlines

United Airlines

Thursday

United Airlines

United Airlines

Friday

United Airlines

United Airlines

Saturday

United Airlines

United Airlines

Sunday

United Airlines

United Airlines

See more direct flights

Nonstop returns

Denver Intl to Sioux City Sioux Gateway

Monday

United Airlines

United Airlines

Tuesday

United Airlines

United Airlines

Wednesday

United Airlines

United Airlines

Thursday

United Airlines

United Airlines

Friday

United Airlines

United Airlines

Saturday

United Airlines

United Airlines

Sunday

United Airlines

United Airlines

See more direct flights
See more direct flights

Top airline flying from Sioux City to Denver

 
See real verified KAYAK customer reviews for airlines flying from Sioux City to Denver. 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 Denver? 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 11228 reviews
7.1entertainment
6.7food
8.1crew
7.7boarding
7.2comfort
Airline reviews

Positive: Entertainment via phone on the short was great and my first time. Good food and wine and head phones for free. Negative: Seat hardly reclined on the long flight. Breakfast was an egg with a bun. No egg choices and rather have something sweet like bun/jam and Youghurt.

10.0 ExcellentAnonymous, Apr 2024GEG - DEN
Read more about United Airlines reviews

Positive: Entertainment via phone on the short was great and my first time. Good food and wine and head phones for free. Negative: Seat hardly reclined on the long flight. Breakfast was an egg with a bun. No egg choices and rather have something sweet like bun/jam and Youghurt.

They did get us booked on a later flight, but it made us miss our connecting flight. So, we had to stay and another state overnight with no luggage or clothes. Because they kept our luggage at airport for next flight on the next day.

Flight was on time. Staff were friendly. I paid for Economy Plus but was required to check my standard carry-on luggage due to lack of space on the aircraft. This cost me 30 minutes, unexpectedly, in waiting at the baggage claim. This experience did not meet my expectations.

Crew is way too many times on the intercom re explaining the same thing

Amazing comfortable chairs great snacks super friendly staff pilots did excellent job. Smooth sailing all the way. Definitely be flying United more.

We waited too long to get water while the plane was on the Tarmac awaiting de-icing.

The plane was delayed coming in and on the tarmac. I was coming from another flight so it made for a very long day. The stewardess kept trying to slam the overhead bins closed and I was worried that she had damaged my new luggage. They ran out of snacks and lccdsddd me a hummus box which was nice. It took them a very long time to pick up the garbage so I could not go to the washroom and had little time. To prepare for disbarment. The TV system was hard to control from the armrest and picture wasn’t clear. The crew did apologize several times for the lateness. It took the Denver airport an unusually long time to de-ice the plane.

By in large it was a good experience. The flight crew was great and that's the most important to me. Boarding was fine.

It was fine. Everything ran on time, crew was great.

Staff friendly and app worked really well. Modest delays were frustrating

Book cheap flights from Sioux City to Denver

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Sioux City to Denver found on KAYAK in the last 72 hours.
9/17mar.
nonstopUnited Airlines
1h 44mSUX-DEN
$100
5/7mar.
nonstopUnited Airlines
1h 44mSUX-DEN
$153
9/17mar.
1 stopUnited Airlines
9h 27mSUX-DEN
$204
9/17mar.
2 stopsUnited Airlines
15h 15mSUX-DEN
$232
5/7mar.
2 stopsUnited Airlines
27h 17mSUX-DEN
$404
5/7mar.
1 stopUnited Airlines
12h 24mSUX-DEN
$1,399

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Last minute flights from Sioux City to Denver

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights from Sioux City to Denver that are departing in the next 10 days.
4/27sáb.
nonstopUnited Airlines
1h 44mSUX-DEN
4/30mar.
nonstopUnited Airlines
1h 34mDEN-SUX
$340
4/27sáb.
multi-stopUnited Airlines
16h 28mSUX-DEN
4/30mar.
nonstopUnited Airlines
1h 34mDEN-SUX
$507
4/27sáb.
multi-stopUnited Airlines
12h 32mSUX-DEN
4/30mar.
nonstopUnited Airlines
1h 34mDEN-SUX
$516
4/27sáb.
multi-stopUnited Airlines
14h 11mSUX-DEN
4/30mar.
nonstopUnited Airlines
1h 34mDEN-SUX
$567
4/27sáb.
multi-stopUnited Airlines
16h 31mSUX-DEN
4/30mar.
nonstopUnited Airlines
1h 34mDEN-SUX
$576

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Sioux City - Denver Flights

Departure:

Sioux City (SUX)United States

Destination:

Denver (DEN)United States

Return flight deals:

Denver - Sioux City

Cabin classes:

$214

Browse origins:

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