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Cheap flights from Denver to Sioux City from $163

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Denver to Sioux City departing on 8/18. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Denver to Sioux City

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
8:15 am - 10:55 amDEN  Denver Intl-SUX Sioux City Sioux Gateway
1h 40mnonstop
United Airlines Logo
6:35 pm - 7:29 pmSUX  Sioux City Sioux Gateway-DEN Denver Intl
1h 54mnonstop
$234United Airlines
Wed, Sep 2 - Wed, Sep 9
United Airlines Logo
9:05 pm - 11:43 pmDEN  Denver Intl-SUX Sioux City Sioux Gateway
1h 38mnonstop
United Airlines Logo
11:30 am - 12:24 pmSUX  Sioux City Sioux Gateway-DEN Denver Intl
1h 54mnonstop
$234United Airlines
Mon, Aug 31 - Mon, Sep 7
United Airlines Logo
9:05 pm - 11:43 pmDEN  Denver Intl-SUX Sioux City Sioux Gateway
1h 38mnonstop
United Airlines Logo
6:45 pm - 7:41 pmSUX  Sioux City Sioux Gateway-DEN Denver Intl
1h 56mnonstop
$234United Airlines
Fri, Oct 23 - Mon, Oct 26
United Airlines Logo
9:05 pm - 11:43 pmDEN  Denver Intl-SUX Sioux City Sioux Gateway
1h 38mnonstop
United Airlines Logo
6:35 pm - 7:29 pmSUX  Sioux City Sioux Gateway-DEN Denver Intl
1h 54mnonstop
$234United Airlines
Fri, Sep 11 - Fri, Sep 18
United Airlines Logo
3:35 pm - 6:11 pmDEN  Denver Intl-SUX Sioux City Sioux Gateway
1h 36mnonstop
United Airlines Logo
6:46 pm - 7:37 pmSUX  Sioux City Sioux Gateway-DEN Denver Intl
1h 51mnonstop
$274United Airlines
Sat, Dec 5 - Wed, Dec 9
United Airlines Logo
8:15 am - 10:55 amDEN  Denver Intl-SUX Sioux City Sioux Gateway
1h 40mnonstop
United Airlines Logo
6:43 pm - 7:37 pmSUX  Sioux City Sioux Gateway-DEN Denver Intl
1h 54mnonstop
$274United Airlines
Wed, Sep 2 - Mon, Sep 7
United Airlines Logo
8:15 am - 10:55 amDEN  Denver Intl-SUX Sioux City Sioux Gateway
1h 40mnonstop
United Airlines Logo
6:43 pm - 7:37 pmSUX  Sioux City Sioux Gateway-DEN Denver Intl
1h 54mnonstop
$274United Airlines
Wed, Sep 2 - Sun, Sep 6

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United Airlines flights from Denver to Sioux City

Our best United Airlines deals on Denver to Sioux City flight tickets
United Airlines
Sep 11
DEN9:05 pmDenver Intl
1h 38m
SUX11:43 pmSioux City Sioux Gateway
Sep 18
SUX6:35 pmSioux City Sioux Gateway
1h 54m
DEN7:29 pmDenver Intl
$234
United Airlines
Dec 5
DEN3:35 pmDenver Intl
1h 36m
SUX6:11 pmSioux City Sioux Gateway
Dec 9
SUX6:46 pmSioux City Sioux Gateway
1h 51m
DEN7:37 pmDenver Intl
$274
United Airlines
Aug 20
DEN8:15 amDenver Intl
1h 40m
SUX10:55 amSioux City Sioux Gateway
Aug 24
SUX6:43 pmSioux City Sioux Gateway
1h 54m
DEN7:37 pmDenver Intl
$322

momondo Fare Finder

 
Customize your flight search to find flights from Denver to Sioux City that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated August 6, 2026.
Use the filters below to find and compare flights from Denver to Sioux City that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

DenverSioux City

DEN Denver Intl - SUX Sioux City Sioux Gateway

DENSUX

Denver Intl

Wed 9/2

8:15 am-10:55 am

Nonstop1h 40m

Sioux City Sioux Gateway

Wed 9/9

6:35 pm-7:29 pm

Nonstop1h 54m

$234

DenverSioux City

DEN Denver Intl - SUX Sioux City Sioux Gateway

DENSUX

Denver Intl

Mon 8/31

9:05 pm-11:43 pm

Nonstop1h 38m

Sioux City Sioux Gateway

Mon 9/7

11:30 am-12:24 pm

Nonstop1h 54m

$234

DenverSioux City

DEN Denver Intl - SUX Sioux City Sioux Gateway

DENSUX

Denver Intl

Fri 10/23

9:05 pm-11:43 pm

Nonstop1h 38m

Sioux City Sioux Gateway

Mon 10/26

6:45 pm-7:41 pm

Nonstop1h 56m

$234

DenverSioux City

DEN Denver Intl - SUX Sioux City Sioux Gateway

DENSUX

Denver Intl

Fri 9/11

9:05 pm-11:43 pm

Nonstop1h 38m

Sioux City Sioux Gateway

Fri 9/18

6:35 pm-7:29 pm

Nonstop1h 54m

$234
Quickest round-trip

DenverSioux City

DEN Denver Intl - SUX Sioux City Sioux Gateway

DENSUX

Denver Intl

Sat 12/5

3:35 pm-6:11 pm

Nonstop1h 36m

Sioux City Sioux Gateway

Wed 12/9

6:46 pm-7:37 pm

Nonstop1h 51m

$274

DenverSioux City

DEN Denver Intl - SUX Sioux City Sioux Gateway

DENSUX

Denver Intl

Wed 9/2

8:15 am-10:55 am

Nonstop1h 40m

Sioux City Sioux Gateway

Mon 9/7

6:43 pm-7:37 pm

Nonstop1h 54m

$274

DenverSioux City

DEN Denver Intl - SUX Sioux City Sioux Gateway

DENSUX

Denver Intl

Wed 9/2

8:15 am-10:55 am

Nonstop1h 40m

Sioux City Sioux Gateway

Sun 9/6

6:43 pm-7:37 pm

Nonstop1h 54m

$274
Cheapest one-way

DenverSioux City

DEN Denver Intl - SUX Sioux City Sioux Gateway

DENSUX

Denver Intl

Tue 8/18

8:15 am-10:55 am

Nonstop1h 40m

$163

DenverSioux City

DEN Denver Intl - SUX Sioux City Sioux Gateway

DENSUX

Denver Intl

Thu 8/20

8:15 am-10:55 am

Nonstop1h 40m

$163
Quickest one-way

DenverSioux City

DEN Denver Intl - SUX Sioux City Sioux Gateway

DENSUX

Denver Intl

Tue 9/22

9:05 pm-11:43 pm

Nonstop1h 38m

$183

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 14 resultsSorted by cheapest first
1
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See travel insights to Sioux City from

How to get the cheapest flight ticket from Denver to Sioux City

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the typical price of a round-trip flight between Denver and Sioux City?

Prices are currently typical for flights on this route.

Typical prices usually range from $234 to $274.
The lowest price recently found on this route was $234.

What is the cheapest month to fly to Sioux City?

The cheapest month to fly to Sioux City from Denver is in July. Flight prices, which tend to average around $234, are often lower during this time because this is during the off-season. The month of August is another great option to travel to Sioux City, with average flight prices from Denver averaging around $254.

What is the cheapest day to depart on your flight to Sioux City?

On average, the least expensive day to fly to Sioux City from Denver is on a Saturday. momondo users have found tickets for Saturday departures for as low as $234. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Monday is the most expensive day to depart from Denver because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $433.

What is the cheapest time of day to depart on your flight to Sioux City?

The cheapest time of day to fly to Sioux City is in the evening when flights can be purchased for as low as $254. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are $360 on average. Flights to Sioux City from Denver in the afternoon are generally more expensive because this time of day is more convenient for travelers’ schedules.

What is the cheapest Denver Intl to Sioux City Sioux Gateway flight route?

Fly from Denver Intl to Sioux City Sioux Gateway for the best Denver Intl - Sioux City Sioux Gateway flight prices

What cabin class options are available on Denver to Sioux City flights?

There is only 1 cabin class available to choose from on Denver to Sioux City flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Denver to Sioux City flights?

No. A direct flight is the cheapest option for a flight between Denver to Sioux City.

When to book flights from Denver to Sioux City

Are you open to changing your travel dates? Check out the ideal times to fly from Denver to Sioux City according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Denver to Sioux City (DEN to SUX) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Denver to Sioux City

Best Price Found

$183

Fastest flight time

1h 36m

Direct flights

Mon, Tue, Wed, Fri, Sat and Sun

Airports in Sioux City

1 airport
The best one-way flight to Sioux City from Denver in the past 72 hours is $183. The best round-trip flight deal from Denver to Sioux City found on momondo in the last 72 hours is $274.
The fastest flight from Denver to Sioux City takes 1h 36m
Direct flights go from Denver to Sioux City on Monday, Tuesday, Wednesday, Friday, Saturday and Sunday. The only airline offering direct flights is United Airlines.
There is 1 airport in Sioux City. From Denver there are direct flights to Sioux City Sioux Gateway (SUX).
Search flight deals

Frequently asked questions about flying from Denver to Sioux City

  • How far is Denver Intl to Sioux City Sioux Gateway by plane?

    Denver Intl and Sioux City Sioux Gateway are 485.2 mi apart from one another. In terms of flight time, this usually takes a little over 1h 36m.

  • When did momondo last update prices for flights from Denver Intl Airport to Sioux City Sioux Gateway Airport?

    Prices for flights from Denver Intl Airport to Sioux City Sioux Gateway Airport were last updated today.

  • How many operators does momondo search for flights from Denver Intl Airport to Sioux City Sioux Gateway Airport?

  • How old do you have to be to fly from Denver Intl Airport to Sioux City Sioux Gateway Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Denver Intl Airport to Sioux City Sioux Gateway Airport.

  • What documentation or ID do you need to fly to Sioux City Sioux Gateway Airport?

    The necessary travel and health documents for your Sioux City Sioux Gateway Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from Denver to Sioux City?

  • What is the most popular airline from Denver to Sioux City?

Best airlines flying from Denver to Sioux City

Compare and see reviews for airlines that fly from Denver to Sioux City with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom $214Free CancellationRating
7.4
10,072 reviews
Search United Airlines flights

  • United Airlines Flights From Denver to Sioux City

    United Airlines operates around 6 flights from Denver to Sioux City every week. The average price of these flights found in the last 72 hours has been $278, but momondo users have found United Airlines deals from Denver to Sioux City from as low as $214 round-trip. United Airlines has been scored 7.4/10 in 10,073 reviews.

Traveling to a place near Sioux City?

Book flights to Sioux City if you plan to visit one of these locations
Norfolk

Why use momondo?

Why should I use momondo to find a flight deal from Denver to Sioux City?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Sioux City from Denver.

Can I find flights from Denver to Sioux City with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Sioux City from Denver with this policy.

How can momondo help me find flights from Denver to Sioux City?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Denver to Sioux City.

I’m not ready to book a flight from Denver to Sioux City right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Sioux City, momondo offers a useful price alert feature which will track prices for flights to Sioux City from Denver and alert you when they change.

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