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

7 flights are operational weekly from Sioux City to Illinois as of June 2026. The most popular departure day for this route is Mon, with 14% of flights per week taking off on this day.

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

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

How many flights depart from Sioux City to Illinois on average per day?

As of June 2026, there are 1 flights per day flying from Sioux City to Illinois. The most common time of day flights depart is 7:00AM, with 100% of flights taking off at noon.

What airlines fly to Illinois?

United Airlines, American Airlines and Southwest are the top three most popular airlines that fly to Illinois from Sioux City according to our data. United Airlines is the first choice among our users, with 61% of people opting to fly with this airline when traveling to Illinois. Keep in mind that there are 3 different airlines that fly to Illinois on a routine basis, so you have a few additional options to choose from.

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

Prices for flights from Sioux City Sioux Gateway Airport to Illinois are updated daily.

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

As of June 2026, there is 1 operator available to choose from for flights from Sioux City Sioux Gateway Airport to Illinois.

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

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Sioux City Sioux Gateway Airport to Illinois.

What documentation or ID do you need to fly to Illinois?

The required travel and health documents for your Illinois trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Illinois. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$176 Cheap Flights from Sioux City to Illinois in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Sioux City to Illinois

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

8:10 am - 10:02 am

SUX

ORD

1h 52mnonstop

3:59 pm - 5:53 pm

ORD

SUX

1h 54mnonstop

$224United Airlines

Thu, Jul 9 - Sun, Jul 12

9:03 am - 10:55 am

SUX

ORD

1h 52mnonstop

4:00 pm - 5:54 pm

ORD

SUX

1h 54mnonstop

$264United Airlines

Sat, Oct 31 - Wed, Nov 4

8:10 am - 10:02 am

SUX

ORD

1h 52mnonstop

3:59 pm - 5:53 pm

ORD

SUX

1h 54mnonstop

$265United Airlines

Fri, Jul 3 - Mon, Jul 6

6:35 pm - 1:03 pm

SUX

ORD

18h 28m

2 stops

3:59 pm - 5:53 pm

ORD

SUX

1h 54mnonstop

$354United Airlines

Fri, Jul 3 - Sat, Jul 4

7:45 am - 9:39 am

SUX

ORD

1h 54mnonstop

4:00 pm - 5:53 pm

ORD

SUX

1h 53mnonstop

$362United Airlines

Thu, Aug 13 - Sat, Aug 15

9:03 am - 10:55 am

SUX

ORD

1h 52mnonstop

5:00 am - 6:11 pm

ORD

SUX

13h 11m

1 stop

$383United Airlines

Sat, Oct 31 - Wed, Nov 4

8:10 am - 10:02 am

SUX

ORD

1h 52mnonstop

3:59 pm - 5:53 pm

ORD

SUX

1h 54mnonstop

$395United Airlines

Fri, Jul 3 - Wed, Jul 8

9:03 am - 10:55 am

SUX

ORD

1h 52mnonstop

7:50 pm - 6:11 pm

ORD

SUX

22h 21m

2 stops

$402United Airlines

Sat, Oct 31 - Wed, Nov 4

8:10 am - 10:02 am

SUX

ORD

1h 52mnonstop

9:50 pm - 10:57 am

ORD

SUX

13h 07m

1 stop

$412United Airlines

Fri, Jul 3 - Wed, Jul 8

9:03 am - 10:55 am

SUX

ORD

1h 52mnonstop

7:30 am - 6:11 pm

ORD

SUX

10h 41m

2 stops

$417United Airlines

Sat, Oct 31 - Wed, Nov 4

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

United Airlines flights from Sioux City to Illinois

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

United Airlines

Jul 9

SUX8:10 amSioux City Sioux Gateway

1h 52m

ORD10:02 amChicago O'Hare Intl

Jul 12

ORD3:59 pmChicago O'Hare Intl

1h 54m

SUX5:53 pmSioux City Sioux Gateway

$224

United Airlines

Oct 31

SUX9:03 amSioux City Sioux Gateway

1h 52m

ORD10:55 amChicago O'Hare Intl

Nov 4

ORD4:00 pmChicago O'Hare Intl

1h 54m

SUX5:54 pmSioux City Sioux Gateway

$264

United Airlines

Jul 3

SUX8:10 amSioux City Sioux Gateway

1h 52m

ORD10:02 amChicago O'Hare Intl

Jul 6

ORD3:59 pmChicago O'Hare Intl

1h 54m

SUX5:53 pmSioux City Sioux Gateway

$265

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Quickest round-trip

Sioux CityChicago

SUX - ORD

SUXORD

Sioux City Sioux Gateway

Thu 7/9

8:10 am-10:02 am

Nonstop1h 52m

Chicago O'Hare Intl

Sun 7/12

3:59 pm-5:53 pm

Nonstop1h 54m

$224

Sioux CityChicago

SUX - ORD

SUXORD

Sioux City Sioux Gateway

Sat 10/31

9:03 am-10:55 am

Nonstop1h 52m

Chicago O'Hare Intl

Wed 11/4

4:00 pm-5:54 pm

Nonstop1h 54m

$264

Sioux CityChicago

SUX - ORD

SUXORD

Sioux City Sioux Gateway

Fri 7/3

8:10 am-10:02 am

Nonstop1h 52m

Chicago O'Hare Intl

Mon 7/6

3:59 pm-5:53 pm

Nonstop1h 54m

$265

Sioux CityChicago

SUX - ORD

SUXORD

Sioux City Sioux Gateway

Fri 7/3

6:35 pm-1:03 pm

2 stops18h 28m

Chicago O'Hare Intl

Sat 7/4

3:59 pm-5:53 pm

Nonstop1h 54m

$354

Sioux CityChicago

SUX - ORD

SUXORD

Sioux City Sioux Gateway

Thu 8/13

7:45 am-9:39 am

Nonstop1h 54m

Chicago O'Hare Intl

Sat 8/15

4:00 pm-5:53 pm

Nonstop1h 53m

$362

Sioux CityChicago

SUX - ORD

SUXORD

Sioux City Sioux Gateway

Sat 10/31

9:03 am-10:55 am

Nonstop1h 52m

Chicago O'Hare Intl

Wed 11/4

5:00 am-6:11 pm

1 stop13h 11m

$383

Sioux CityChicago

SUX - ORD

SUXORD

Sioux City Sioux Gateway

Fri 7/3

8:10 am-10:02 am

Nonstop1h 52m

Chicago O'Hare Intl

Wed 7/8

3:59 pm-5:53 pm

Nonstop1h 54m

$395

Sioux CityChicago

SUX - ORD

SUXORD

Sioux City Sioux Gateway

Sat 10/31

9:03 am-10:55 am

Nonstop1h 52m

Chicago O'Hare Intl

Wed 11/4

7:50 pm-6:11 pm

2 stops22h 21m

$402

Sioux CityChicago

SUX - ORD

SUXORD

Sioux City Sioux Gateway

Fri 7/3

8:10 am-10:02 am

Nonstop1h 52m

Chicago O'Hare Intl

Wed 7/8

9:50 pm-10:57 am

1 stop13h 07m

$412

Sioux CityChicago

SUX - ORD

SUXORD

Sioux City Sioux Gateway

Sat 10/31

9:03 am-10:55 am

Nonstop1h 52m

Chicago O'Hare Intl

Wed 11/4

7:30 am-6:11 pm

2 stops10h 41m

$417

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 Illinois

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 day to depart on your flight to Illinois?

The cheapest day to depart from Sioux City to Illinois is on a Friday when prices can be found for as low as $384. Flights from Sioux City to Illinois on a Sunday will generally be more expensive and average around $593. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

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

Our most recent data shows that the best time of day to fly to Illinois is at noon. Flights from Sioux City to Illinois during this time can be as low as $424. Flights in the morning are often more expensive with an average ticket price of $463.

What is the cheapest Sioux City Sioux Gateway to Illinois flight route?

Fly from Sioux City Sioux Gateway to Chicago O'Hare Intl for the best Sioux City Sioux Gateway - Illinois flight prices

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

There are 2 cabin classes available to choose from on Sioux City to Illinois 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 Sioux City to Illinois flights?

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

Cheap Sioux City to Illinois flight deals and tips

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

Best Price Found	$297
Fastest flight time	1h 52m
Direct flights	Tue, Fri, Sat and Sun
Airports in Illinois	98 airports

The best one-way flight to Illinois from Sioux City in the past 72 hours is $297. The best round-trip flight deal from Sioux City to Illinois found on momondo in the last 72 hours is $463.

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

Direct flights go from Sioux City to Illinois on Tuesday, Friday, Saturday and Sunday. The only airline offering direct flights is United Airlines.

There are 98 airports in Illinois. From Sioux City there are direct flights to Chicago O'Hare Intl (ORD).

Search flight deals

Frequently asked questions about flying from Sioux City to Illinois

When did momondo last update prices for flights from Sioux City Sioux Gateway Airport to Illinois?
Prices for flights from Sioux City Sioux Gateway Airport to Illinois are updated daily.
How many operators does momondo search for flights from Sioux City Sioux Gateway Airport to Illinois?
As of June 2026, there is 1 operator available to choose from for flights from Sioux City Sioux Gateway Airport to Illinois.
How old do you have to be to fly from Sioux City Sioux Gateway Airport to Illinois?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Sioux City Sioux Gateway Airport to Illinois.
What documentation or ID do you need to fly to Illinois?
The required travel and health documents for your Illinois trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Illinois. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular plane model from Sioux City to Illinois?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from Sioux City to Illinois is Canadair (Bombardier) Regional Jet (68.75% of total bookings). The next most popular plane models are Boeing 737 MAX 8 (6.25%), Airbus A319 (6.25%), and Boeing 737-700 Passenger/BBJ1 (winglets) (6.25%).

Best airlines flying from Sioux City to Illinois

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

Airline	Rating	Free Cancellation	Price
United Airlines	PriceFrom $244	Free Cancellation	Rating 7.4 9,804 reviews		Search United Airlines flights

Why use momondo?

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

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 Illinois for you.

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

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

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

Once you have performed a search for Sioux City to Illinois flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

Yes momondo offers price alerts on flights to Illinois from Sioux City. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.