How many flights depart from Sioux City to United States on average per week?

The number of flights available between Sioux City and United States is 6 per week as of September 2026. The most frequent departure day is Mon, with 33% of weekly flights leaving on this day.

What airlines fly to United States?

American Airlines, Southwest and United Airlines are the top three most popular airlines that fly to United States from Sioux City according to our data. American Airlines is the first choice among our users, with 34% of people opting to fly with this airline when traveling to United States. Keep in mind that there are 7 different airlines that fly to United States on a routine basis, so you have a few additional options to choose from.

What is the cheapest airline that flies from Sioux City Sioux Gateway to United States?

United Airlines is the most popular carrier operating from Sioux City Sioux Gateway to United States

When did momondo last update prices for flights from Sioux City Sioux Gateway Airport to United States?

Prices for flights from Sioux City Sioux Gateway Airport to United States were last updated today.

How many operators does momondo search for flights from Sioux City Sioux Gateway Airport to United States?

The number of operators available for flights from Sioux City Sioux Gateway Airport to United States is 1 as of September 2026.

How old do you have to be to fly from Sioux City Sioux Gateway Airport to United States?

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 Sioux City Sioux Gateway Airport to United States.

What documentation or ID do you need to fly to United States?

The travel and health documents required for your trip to United States can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at United States. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$168 Cheap Flights from Sioux City to the United States in 2026/27

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Sioux City to the United States

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

6:58 pm - 7:52 pmSUX Sioux City Sioux Gateway-DEN Denver Intl

1h 54mnonstop

9:05 pm - 11:43 pmDEN Denver Intl-SUX Sioux City Sioux Gateway

1h 38mnonstop

$234United Airlines

Wed, Oct 21 - Wed, Oct 28

6:45 pm - 7:41 pmSUX Sioux City Sioux Gateway-DEN Denver Intl

1h 56mnonstop

9:05 pm - 11:43 pmDEN Denver Intl-SUX Sioux City Sioux Gateway

1h 38mnonstop

$234United Airlines

Sat, Nov 14 - Tue, Nov 17

6:00 am - 7:00 amSUX Sioux City Sioux Gateway-DEN Denver Intl

2h 00mnonstop

8:05 am - 10:44 amDEN Denver Intl-SUX Sioux City Sioux Gateway

1h 39mnonstop

$234United Airlines

Thu, Mar 18 - Sun, Mar 21

6:45 pm - 7:41 pmSUX Sioux City Sioux Gateway-DEN Denver Intl

1h 56mnonstop

9:05 pm - 11:43 pmDEN Denver Intl-SUX Sioux City Sioux Gateway

1h 38mnonstop

$234United Airlines

Sat, Oct 31 - Tue, Nov 3

6:44 pm - 10:30 pmSUX Sioux City Sioux Gateway-SAN San Diego

5h 46m1 stop Denver Intl

12:10 pm - 11:43 pmSAN San Diego-SUX Sioux City Sioux Gateway

9h 33m2 stops San Francisco Denver Intl

$272United Airlines

Wed, Dec 2 - Wed, Dec 9

6:58 pm - 7:52 pmSUX Sioux City Sioux Gateway-DEN Denver Intl

1h 54mnonstop

9:05 pm - 11:43 pmDEN Denver Intl-SUX Sioux City Sioux Gateway

1h 38mnonstop

$282United Airlines

Mon, Oct 5 - Mon, Oct 19

6:58 pm - 7:52 pmSUX Sioux City Sioux Gateway-DEN Denver Intl

1h 54mnonstop

9:05 pm - 11:43 pmDEN Denver Intl-SUX Sioux City Sioux Gateway

1h 38mnonstop

$319United Airlines

Wed, Oct 21 - Sun, Oct 25

6:58 pm - 7:52 pmSUX Sioux City Sioux Gateway-DEN Denver Intl

1h 54mnonstop

9:05 pm - 11:43 pmDEN Denver Intl-SUX Sioux City Sioux Gateway

1h 38mnonstop

$319United Airlines

Tue, Oct 20 - Sun, Oct 25

6:58 pm - 7:52 pmSUX Sioux City Sioux Gateway-DEN Denver Intl

1h 54mnonstop

9:05 pm - 11:43 pmDEN Denver Intl-SUX Sioux City Sioux Gateway

1h 38mnonstop

$330United Airlines

Thu, Oct 8 - Mon, Oct 12

6:58 pm - 7:52 pmSUX Sioux City Sioux Gateway-DEN Denver Intl

1h 54mnonstop

9:05 pm - 11:43 pmDEN Denver Intl-SUX Sioux City Sioux Gateway

1h 38mnonstop

$330United Airlines

Mon, Oct 19 - Wed, Oct 21

Cheap last minute flights

Enter your travel dates to find the best prices.

8:35 am - 10:29 amSUX Sioux City Sioux Gateway-ORD Chicago O'Hare Intl

1h 54mnonstop

4:00 pm - 5:53 pmORD Chicago O'Hare Intl-SUX Sioux City Sioux Gateway

1h 53mnonstop

$319United Airlines

Sat, Sep 26 - Tue, Oct 20

8:35 am - 10:29 amSUX Sioux City Sioux Gateway-ORD Chicago O'Hare Intl

1h 54mnonstop

4:00 pm - 5:53 pmORD Chicago O'Hare Intl-SUX Sioux City Sioux Gateway

1h 53mnonstop

$319United Airlines

Mon, Sep 28 - Mon, Oct 19

8:35 am - 10:29 amSUX Sioux City Sioux Gateway-ORD Chicago O'Hare Intl

1h 54mnonstop

4:00 pm - 5:53 pmORD Chicago O'Hare Intl-SUX Sioux City Sioux Gateway

1h 53mnonstop

$319United Airlines

Sat, Sep 26 - Mon, Oct 19

8:35 am - 10:29 amSUX Sioux City Sioux Gateway-ORD Chicago O'Hare Intl

1h 54mnonstop

4:00 pm - 5:53 pmORD Chicago O'Hare Intl-SUX Sioux City Sioux Gateway

1h 53mnonstop

$319United Airlines

Mon, Sep 28 - Wed, Oct 21

8:35 am - 10:29 amSUX Sioux City Sioux Gateway-ORD Chicago O'Hare Intl

1h 54mnonstop

4:00 pm - 5:53 pmORD Chicago O'Hare Intl-SUX Sioux City Sioux Gateway

1h 53mnonstop

$319United Airlines

Mon, Sep 28 - Tue, Oct 20

8:35 am - 10:29 amSUX Sioux City Sioux Gateway-ORD Chicago O'Hare Intl

1h 54mnonstop

4:00 pm - 5:53 pmORD Chicago O'Hare Intl-SUX Sioux City Sioux Gateway

1h 53mnonstop

$319United Airlines

Sat, Sep 26 - Wed, Oct 21

8:35 am - 3:49 pmSUX Sioux City Sioux Gateway-SAN San Diego

9h 14m1 stop Chicago O'Hare Intl

4:11 pm - 11:43 pmSAN San Diego-SUX Sioux City Sioux Gateway

5h 32m1 stop Denver Intl

$484United Airlines

Tue, Sep 29 - Sat, Oct 3

6:58 pm - 9:59 pmSUX Sioux City Sioux Gateway-PHX Phoenix Sky Harbor Intl

5h 01m1 stop Denver Intl

4:29 pm - 11:43 pmPHX Phoenix Sky Harbor Intl-SUX Sioux City Sioux Gateway

5h 14m1 stop Denver Intl

$484United Airlines

Fri, Sep 25 - Mon, Sep 28

8:35 am - 3:49 pmSUX Sioux City Sioux Gateway-SAN San Diego

9h 14m1 stop Chicago O'Hare Intl

12:40 pm - 11:43 pmSAN San Diego-SUX Sioux City Sioux Gateway

9h 03m2 stops San Francisco Denver Intl

$489United Airlines

Tue, Sep 29 - Sat, Oct 3

8:35 am - 10:29 amSUX Sioux City Sioux Gateway-ORD Chicago O'Hare Intl

1h 54mnonstop

2:30 pm - 11:43 pmORD Chicago O'Hare Intl-SUX Sioux City Sioux Gateway

9h 13m1 stop Denver Intl

$516United Airlines

Sat, Sep 26 - Tue, Oct 20

Cheap direct flights

Enter your travel dates to find the best prices.

6:45 pm - 7:41 pmSUX Sioux City Sioux Gateway-DEN Denver Intl

1h 56mnonstop

9:05 pm - 11:43 pmDEN Denver Intl-SUX Sioux City Sioux Gateway

1h 38mnonstop

$234United Airlines

Sat, Nov 14 - Tue, Nov 17

6:58 pm - 7:52 pmSUX Sioux City Sioux Gateway-DEN Denver Intl

1h 54mnonstop

9:05 pm - 11:43 pmDEN Denver Intl-SUX Sioux City Sioux Gateway

1h 38mnonstop

$234United Airlines

Wed, Oct 21 - Wed, Oct 28

6:00 am - 7:00 amSUX Sioux City Sioux Gateway-DEN Denver Intl

2h 00mnonstop

8:05 am - 10:44 amDEN Denver Intl-SUX Sioux City Sioux Gateway

1h 39mnonstop

$234United Airlines

Thu, Mar 18 - Sun, Mar 21

6:45 pm - 7:41 pmSUX Sioux City Sioux Gateway-DEN Denver Intl

1h 56mnonstop

9:05 pm - 11:43 pmDEN Denver Intl-SUX Sioux City Sioux Gateway

1h 38mnonstop

$234United Airlines

Sat, Oct 31 - Tue, Nov 3

6:58 pm - 7:52 pmSUX Sioux City Sioux Gateway-DEN Denver Intl

1h 54mnonstop

9:05 pm - 11:43 pmDEN Denver Intl-SUX Sioux City Sioux Gateway

1h 38mnonstop

$282United Airlines

Mon, Oct 5 - Mon, Oct 19

6:58 pm - 7:52 pmSUX Sioux City Sioux Gateway-DEN Denver Intl

1h 54mnonstop

9:05 pm - 11:43 pmDEN Denver Intl-SUX Sioux City Sioux Gateway

1h 38mnonstop

$319United Airlines

Wed, Oct 21 - Sun, Oct 25

6:58 pm - 7:52 pmSUX Sioux City Sioux Gateway-DEN Denver Intl

1h 54mnonstop

9:05 pm - 11:43 pmDEN Denver Intl-SUX Sioux City Sioux Gateway

1h 38mnonstop

$319United Airlines

Tue, Oct 20 - Sun, Oct 25

6:58 pm - 7:52 pmSUX Sioux City Sioux Gateway-DEN Denver Intl

1h 54mnonstop

9:05 pm - 11:43 pmDEN Denver Intl-SUX Sioux City Sioux Gateway

1h 38mnonstop

$330United Airlines

Thu, Oct 8 - Mon, Oct 12

6:58 pm - 7:52 pmSUX Sioux City Sioux Gateway-DEN Denver Intl

1h 54mnonstop

9:05 pm - 11:43 pmDEN Denver Intl-SUX Sioux City Sioux Gateway

1h 38mnonstop

$330United Airlines

Mon, Oct 5 - Fri, Oct 9

6:44 pm - 7:40 pmSUX Sioux City Sioux Gateway-DEN Denver Intl

1h 56mnonstop

9:05 pm - 11:43 pmDEN Denver Intl-SUX Sioux City Sioux Gateway

1h 38mnonstop

$330United Airlines

Mon, Dec 7 - Tue, Dec 8

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United Airlines flights from Sioux City to United States

Our best United Airlines deals on Sioux City to United States flight tickets

United Airlines

Oct 21

SUX6:58 pmSioux City Sioux Gateway

1h 54m

DEN7:52 pmDenver Intl

Oct 28

DEN9:05 pmDenver Intl

1h 38m

SUX11:43 pmSioux City Sioux Gateway

$234

United Airlines

Dec 2

SUX6:44 pmSioux City Sioux Gateway

5h 46m

1 stop

SAN10:30 pmSan Diego

Dec 9

SAN12:10 pmSan Diego

9h 33m

2 stops

SUX11:43 pmSioux City Sioux Gateway

$272

United Airlines

Oct 5

SUX6:58 pmSioux City Sioux Gateway

1h 54m

DEN7:52 pmDenver Intl

Oct 19

DEN9:05 pmDenver Intl

1h 38m

SUX11:43 pmSioux City Sioux Gateway

$282

momondo Fare Finder

Use the filters below to find and compare flights from Sioux City to the United States that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Quickest round-trip

Sioux CityDenver

SUX Sioux City Sioux Gateway - DEN Denver Intl

SUXDEN

Sioux City Sioux Gateway

Wed 10/21

6:58 pm-7:52 pm

Nonstop1h 54m

Denver Intl

Wed 10/28

9:05 pm-11:43 pm

Nonstop1h 38m

$234

Sioux CityDenver

SUX Sioux City Sioux Gateway - DEN Denver Intl

SUXDEN

Sioux City Sioux Gateway

Sat 11/14

6:45 pm-7:41 pm

Nonstop1h 56m

Denver Intl

Tue 11/17

9:05 pm-11:43 pm

Nonstop1h 38m

$234

Sioux CityDenver

SUX Sioux City Sioux Gateway - DEN Denver Intl

SUXDEN

Sioux City Sioux Gateway

Thu 3/18

6:00 am-7:00 am

Nonstop2h 00m

Denver Intl

Sun 3/21

8:05 am-10:44 am

Nonstop1h 39m

$234

Sioux CityDenver

SUX Sioux City Sioux Gateway - DEN Denver Intl

SUXDEN

Sioux City Sioux Gateway

Sat 10/31

6:45 pm-7:41 pm

Nonstop1h 56m

Denver Intl

Tue 11/3

9:05 pm-11:43 pm

Nonstop1h 38m

$234

Sioux CitySan Diego

SUX Sioux City Sioux Gateway - SAN San Diego

SUXSAN

Sioux City Sioux Gateway

Wed 12/2

6:44 pm-10:30 pm

1 stop5h 46m

San Diego

Wed 12/9

12:10 pm-11:43 pm

2 stops9h 33m

$272

Sioux CityDenver

SUX Sioux City Sioux Gateway - DEN Denver Intl

SUXDEN

Sioux City Sioux Gateway

Mon 10/5

6:58 pm-7:52 pm

Nonstop1h 54m

Denver Intl

Mon 10/19

9:05 pm-11:43 pm

Nonstop1h 38m

$282

Sioux CityDenver

SUX Sioux City Sioux Gateway - DEN Denver Intl

SUXDEN

Sioux City Sioux Gateway

Wed 10/21

6:58 pm-7:52 pm

Nonstop1h 54m

Denver Intl

Sun 10/25

9:05 pm-11:43 pm

Nonstop1h 38m

$319

Sioux CityDenver

SUX Sioux City Sioux Gateway - DEN Denver Intl

SUXDEN

Sioux City Sioux Gateway

Tue 10/20

6:58 pm-7:52 pm

Nonstop1h 54m

Denver Intl

Sun 10/25

9:05 pm-11:43 pm

Nonstop1h 38m

$319

Sioux CityDenver

SUX Sioux City Sioux Gateway - DEN Denver Intl

SUXDEN

Sioux City Sioux Gateway

Thu 10/8

6:58 pm-7:52 pm

Nonstop1h 54m

Denver Intl

Mon 10/12

9:05 pm-11:43 pm

Nonstop1h 38m

$330

Sioux CityDenver

SUX Sioux City Sioux Gateway - DEN Denver Intl

SUXDEN

Sioux City Sioux Gateway

Mon 10/19

6:58 pm-7:52 pm

Nonstop1h 54m

Denver Intl

Wed 10/21

9:05 pm-11:43 pm

Nonstop1h 38m

$330

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Sioux City to United States

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

Prices

Airlines

Other information

What is the cheapest month to fly to United States?

In general, June is the cheapest month to fly from Sioux City to United States. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $214. If you aren’t able to travel during the month of June, then book flights to United States from Sioux City during January instead. Flights to United States in January, while not as cheap as those in June, still average around $258.

Can stopping save me money on Sioux City to United States flights?

You could potentially save up to 8% on your flight if you consider stops on a Sioux City to United States flight.

Cheap Sioux City to United States flight deals and tips

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

Best Price Found	$168
Fastest flight time	1h 52m
Direct flights	Every day
Airports in United States	4,301 airports

The best one-way flight to United States from Sioux City in the past 72 hours is $168. The best round-trip flight deal from Sioux City to United States found on momondo in the last 72 hours is $234.

The fastest flight from Sioux City to United States takes 1h 52m

Direct flights go from Sioux City to United States every day.

There are 4,301 airports in United States. From Sioux City there are direct flights to Chicago O'Hare Intl (ORD), Denver Intl (DEN).

Search flight deals

Frequently asked questions about flying from Sioux City to the United States

When did momondo last update prices for flights from Sioux City Sioux Gateway Airport to United States?
Prices for flights from Sioux City Sioux Gateway Airport to United States were last updated today.
How many operators does momondo search for flights from Sioux City Sioux Gateway Airport to United States?
The number of operators available for flights from Sioux City Sioux Gateway Airport to United States is 1 as of September 2026.
How old do you have to be to fly from Sioux City Sioux Gateway Airport to United States?
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 Sioux City Sioux Gateway Airport to United States.
What documentation or ID do you need to fly to United States?
The travel and health documents required for your trip to United States can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at United States. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular plane model from Sioux City to United States?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from Sioux City to United States is Canadair (Bombardier) Regional Jet (41.30% of total bookings). The next most popular plane models are Canadair (Bombardier) Regional Jet 200 (13.04%), Boeing 737 MAX 8 (4.35%), and Airbus A321-100/200 (4.35%).

Best airlines flying from Sioux City to United States

Compare and see reviews for airlines that fly from Sioux City to United States with momondo

Airline	Rating	Free Cancellation	Price
United Airlines	PriceFrom $269	Free Cancellation	Rating 7.4 10,226 reviews		Search United Airlines flights

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Sioux City to United States for you.

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

momondo does allow users to show only those flights to United States from Sioux City which offer a flexible booking policy as well as other useful filters and features.

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

momondo helps you find the best flight between Sioux City and United States by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

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