SUX - DEN

$208 Find Cheap Flights from Sioux City to Denver

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 5/14. 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

KAYAK searches 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
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Flights Deals

Cheap Flights from Sioux City to Denver

 
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.

Recent round-trip flight deals from Sioux City to Denver

KAYAK's recommended round-trip deals from the most popular airlines that fly from Sioux City to Denver.
Discover the best prices for you by selecting your travel dates on KAYAK.
United Airlines Logo
6:35 pm - 7:20 pmSUX-DEN
1h 45mnonstop
United Airlines Logo
2:35 pm - 5:15 pmDEN-SUX
1h 40mnonstop
$254United Airlines
Find Deal
Sat, Jun 14 - Mon, Jun 16
United Airlines Logo
6:35 pm - 7:20 pmSUX-DEN
1h 45mnonstop
United Airlines Logo
2:35 pm - 5:15 pmDEN-SUX
1h 40mnonstop
$310United Airlines
Find Deal
Sun, Jun 8 - Thu, Jun 12
United Airlines Logo
6:48 pm - 7:35 pmSUX-DEN
1h 47mnonstop
United Airlines Logo
3:40 pm - 6:13 pmDEN-SUX
1h 33mnonstop
$329United Airlines
Find Deal
Thu, Aug 21 - Sun, Aug 24
United Airlines Logo
6:35 pm - 7:20 pmSUX-DEN
1h 45mnonstop
United Airlines Logo
8:50 pm - 10:40 pmDEN-SUX
24h 50m1 stop
$366United Airlines
Find Deal
Sat, Jun 14 - Mon, Jun 16
United Airlines Logo
6:48 pm - 7:35 pmSUX-DEN
1h 47mnonstop
United Airlines Logo
7:45 am - 10:57 pmDEN-SUX
14h 12m2 stops
$367United Airlines
Find Deal
Thu, Aug 21 - Sun, Aug 24
United Airlines Logo
6:48 pm - 7:35 pmSUX-DEN
1h 47mnonstop
United Airlines Logo
7:48 am - 10:57 pmDEN-SUX
14h 09m1 stop
$371United Airlines
Find Deal
Thu, Aug 21 - Sun, Aug 24
United Airlines Logo
6:35 pm - 7:20 pmSUX-DEN
1h 45mnonstop
United Airlines Logo
5:35 pm - 10:40 pmDEN-SUX
28h 05m2 stops
$388United Airlines
Find Deal
Sat, Jun 14 - Mon, Jun 16
United Airlines Logo
6:35 pm - 7:20 pmSUX-DEN
1h 45mnonstop
United Airlines Logo
7:07 pm - 10:40 pmDEN-SUX
26h 33m1 stop
$399United Airlines
Find Deal
Wed, Jun 18 - Sat, Jun 21
United Airlines Logo
3:26 pm - 4:12 pmSUX-DEN
1h 46mnonstop
United Airlines Logo
11:53 am - 2:28 pmDEN-SUX
1h 35mnonstop
$410United Airlines
Find Deal
Thu, May 15 - Mon, May 19
United Airlines Logo
6:50 pm - 7:34 pmSUX-DEN
1h 44mnonstop
United Airlines Logo
7:48 am - 10:57 pmDEN-SUX
14h 09m1 stop
$419United Airlines
Find Deal
Sat, Oct 18 - Sun, Oct 19
Useful Info

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

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 round-trip flights from Sioux City to Denver clicked on KAYAK for each day over the last 12 months.

If you are looking for a flight deal from Sioux City to Denver, look for departures on Saturdays and avoid leaving on a Sunday, as it's usually the priciest day. When flying back from Denver, Saturday is the cheapest day to fly and Monday is 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 round-trip 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 March, where tickets cost $214 (return) on average. On the other hand, the most expensive months are July and June, where the average cost of round-trip tickets is $325 and $309 respectively.

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

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 $347, prices are generally cheapest when you fly direct.

Find deals

Good to know

Low seasonJanuary
High seasonJuly
Cheapest flight$208
Best time to beat the crowds but there is an average 4% increase in price.
Most popular time to fly with an average 22% increase in price.
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 $208 for a one-way ticket and $254 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 airlines offer Wi-Fi service onboard planes from Sioux City to Denver?

    Alaska Airlines, and Delta offer inflight Wi-Fi service on the Sioux City to Denver flight route.

  • 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.

KAYAK’s top tips for finding a cheap flight from Sioux City to Denver

  • Looking for a cheap flight? 25% of our users found flights on this route for $99 or less one-way and $382 or less round-trip.

Prefer to fly direct from Sioux City to Denver?

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

Direct 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

Direct 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 8696 reviews
7.1Entertainment
8.1Crew
7.7Boarding
6.6Food
7.3Comfort
Airline reviews

Food choices were very limited. Taste of the dishes was average.

10.0 ExcellentAmi, Jan 2025AUS - DEN
Read more United Airlines reviews

Food choices were very limited. Taste of the dishes was average.

I liked all the informational texts. I always knew where to go and when .

Received an email the night before showing that there would be seatback entertainment on our flight. We get on and there was no seatback entertainment. And then it was a scramble to try to set up the iPads for the kids before takeoff so they could watch something for the four hour flight.

The reason I don’t fly United. No in seat entertainment for a long flight and inconsistent WiFi and entertainment available from my device.

It was a good flight. Nothing comes to mind about how it could have been better. It was a newer plane, seemed like a great upgrade from your older ones. Staff was very good as well.

The food for long haul was poor compared to Singapore airlines economy. Pasta plain with tomato sauce . Singapore airlines give me Hagen dash small ice cream cup it was great. The choices of dinner course Singapore air also much better The crew mostly friendly. The economy seat are as expected.

The plane was clean. The staff was excellent. The flight attendants were very good. Enjoyable flight. Overall. The seats in the back are too small but, will always be.

Flight was 3 1/2 hour delayed with no credit or meal vouchers

late departure due to some unspecified issue with ventilating the cabin. They got it running but it was FREEZING for the whole flight. I asked for a blanket but they didn't provide one. They could not turn up the heat. it was quite miserable.

Liked that we left on time for each flight. Snacks not the best, but we're okay.

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

Information on your arrival and departure airports

Denver (DEN)
Sioux City (SUX)

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