Latest deals
Insights
FAQs
Reviews
Price Alerts

Cheap flights from Sioux City to Illinois from $204

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Sioux City to Illinois departing on 3/27. 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
0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

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

Trusted and free

Trusted and free

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

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from Sioux City to Illinois

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
12:53 pm - 2:40 pm
SUX
-
ORD
1h 47mnonstop
United Airlines Logo
4:05 pm - 5:56 pm
ORD
-
SUX
1h 51mnonstop
$204United Airlines
Fri, Mar 27 - Mon, Mar 30
United Airlines Logo
1:00 pm - 2:47 pm
SUX
-
ORD
1h 47mnonstop
United Airlines Logo
3:50 pm - 5:41 pm
ORD
-
SUX
1h 51mnonstop
$244United Airlines
Sat, Feb 14 - Tue, Feb 17
United Airlines Logo
12:45 pm - 2:40 pm
SUX
-
ORD
1h 55mnonstop
United Airlines Logo
3:35 pm - 5:32 pm
ORD
-
SUX
1h 57mnonstop
$265United Airlines
Sat, Jun 27 - Wed, Aug 19
United Airlines Logo
12:53 pm - 2:40 pm
SUX
-
ORD
1h 47mnonstop
United Airlines Logo
3:50 pm - 5:41 pm
ORD
-
SUX
1h 51mnonstop
$326United Airlines
Fri, Mar 6 - Thu, Mar 12
United Airlines Logo
12:45 pm - 2:40 pm
SUX
-
ORD
1h 55mnonstop
United Airlines Logo
3:35 pm - 5:28 pm
ORD
-
SUX
1h 53mnonstop
$340United Airlines
Sat, Jan 24 - Wed, Jan 28
United Airlines Logo
1:00 pm - 2:47 pm
SUX
-
ORD
1h 47mnonstop
United Airlines Logo
3:50 pm - 5:41 pm
ORD
-
SUX
1h 51mnonstop
$355United Airlines
Sat, Feb 14 - Tue, Feb 17
United Airlines Logo
1:00 pm - 2:47 pm
SUX
-
ORD
1h 47mnonstop
United Airlines Logo
9:15 pm - 10:45 am
ORD
-
SUX
13h 30m
1 stop
$368United Airlines
Sat, Feb 14 - Tue, Feb 17
United Airlines Logo
6:00 am - 8:10 pm
SUX
-
ORD
14h 10m
2 stops
United Airlines Logo
3:35 pm - 5:32 pm
ORD
-
SUX
1h 57mnonstop
$374United Airlines
Sat, May 16 - Sun, May 17
United Airlines Logo
1:00 pm - 2:47 pm
SUX
-
ORD
1h 47mnonstop
United Airlines Logo
9:30 pm - 10:45 am
ORD
-
SUX
13h 15m
1 stop
$376United Airlines
Thu, Feb 26 - Thu, Mar 5
United Airlines Logo
6:46 pm - 9:38 am
SUX
-
ORD
14h 52m
1 stop
United Airlines Logo
3:50 pm - 5:41 pm
ORD
-
SUX
1h 51mnonstop
$377United Airlines
Sat, Feb 14 - Tue, Feb 17

United Airlines flights from Sioux City to Illinois

Our best United Airlines deals on Sioux City to Illinois flight tickets
United Airlines
Mar 27
SUX12:53 pmSioux City Sioux Gateway
1h 47m
ORD2:40 pmChicago O'Hare Intl
Mar 30
ORD4:05 pmChicago O'Hare Intl
1h 51m
SUX5:56 pmSioux City Sioux Gateway
$204
United Airlines
Feb 14
SUX1:00 pmSioux City Sioux Gateway
1h 47m
ORD2:47 pmChicago O'Hare Intl
Feb 17
ORD3:50 pmChicago O'Hare Intl
1h 51m
SUX5:41 pmSioux City Sioux Gateway
$244
United Airlines
Jun 27
SUX12:45 pmSioux City Sioux Gateway
1h 55m
ORD2:40 pmChicago O'Hare Intl
Aug 19
ORD3:35 pmChicago O'Hare Intl
1h 57m
SUX5:32 pmSioux City Sioux Gateway
$265

momondo Fare Finder

 
Customize your flight search to find flights from Sioux City to Illinois 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 January 12, 2026.
Use the filters below to find and compare flights from Sioux City to Illinois that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Sioux CityChicago

SUX - ORD

SUXORD

Sioux City Sioux Gateway

Fri 3/27

12:53 pm-2:40 pm

Nonstop1h 47m

Chicago O'Hare Intl

Mon 3/30

4:05 pm-5:56 pm

Nonstop1h 51m

$204

Sioux CityChicago

SUX - ORD

SUXORD

Sioux City Sioux Gateway

Sat 2/14

1:00 pm-2:47 pm

Nonstop1h 47m

Chicago O'Hare Intl

Tue 2/17

3:50 pm-5:41 pm

Nonstop1h 51m

$244

Sioux CityChicago

SUX - ORD

SUXORD

Sioux City Sioux Gateway

Sat 6/27

12:45 pm-2:40 pm

Nonstop1h 55m

Chicago O'Hare Intl

Wed 8/19

3:35 pm-5:32 pm

Nonstop1h 57m

$265

Sioux CityChicago

SUX - ORD

SUXORD

Sioux City Sioux Gateway

Fri 3/6

12:53 pm-2:40 pm

Nonstop1h 47m

Chicago O'Hare Intl

Thu 3/12

3:50 pm-5:41 pm

Nonstop1h 51m

$326

Sioux CityChicago

SUX - ORD

SUXORD

Sioux City Sioux Gateway

Sat 1/24

12:45 pm-2:40 pm

Nonstop1h 55m

Chicago O'Hare Intl

Wed 1/28

3:35 pm-5:28 pm

Nonstop1h 53m

$340

Sioux CityChicago

SUX - ORD

SUXORD

Sioux City Sioux Gateway

Sat 2/14

1:00 pm-2:47 pm

Nonstop1h 47m

Chicago O'Hare Intl

Tue 2/17

3:50 pm-5:41 pm

Nonstop1h 51m

$355

Sioux CityChicago

SUX - ORD

SUXORD

Sioux City Sioux Gateway

Sat 2/14

1:00 pm-2:47 pm

Nonstop1h 47m

Chicago O'Hare Intl

Tue 2/17

9:15 pm-10:45 am

1 stop13h 30m

$368

Sioux CityChicago

SUX - ORD

SUXORD

Sioux City Sioux Gateway

Sat 5/16

6:00 am-8:10 pm

2 stops14h 10m

Chicago O'Hare Intl

Sun 5/17

3:35 pm-5:32 pm

Nonstop1h 57m

$374

Sioux CityChicago

SUX - ORD

SUXORD

Sioux City Sioux Gateway

Thu 2/26

1:00 pm-2:47 pm

Nonstop1h 47m

Chicago O'Hare Intl

Thu 3/5

9:30 pm-10:45 am

1 stop13h 15m

$376

Sioux CityChicago

SUX - ORD

SUXORD

Sioux City Sioux Gateway

Sat 2/14

6:46 pm-9:38 am

1 stop14h 52m

Chicago O'Hare Intl

Tue 2/17

3:50 pm-5:41 pm

Nonstop1h 51m

$377

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 16 resultsSorted by cheapest first
1
2

See travel insights to Illinois from

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

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 $667. 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 $378. Flights in the morning are often more expensive with an average ticket price of $436.

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 Sioux Gateway to Illinois flights?

There are 2 cabin classes available to choose from on Sioux City Sioux Gateway 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

$190

Fastest flight time

1h 45m

Direct flights

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 $190. The best round-trip flight deal from Sioux City to Illinois found on momondo in the last 72 hours is $300.
The fastest flight from Sioux City to Illinois takes 1h 45m
Direct flights go from Sioux City to Illinois on Friday, Saturday and Sunday. There are no airlines offering direct flights.
There are 98 airports in Illinois. From Sioux City there are direct flights to Chicago O'Hare Intl (ORD).
Search flight deals

  • 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?

  • 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?

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 AirlinesPriceFrom $214Free CancellationRating
7.4
9,149 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.

An easier way to manage your Illinois trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Wed 2/11
Wed 2/18
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Illinois

Popular cities in Illinois

Popular flights according to clicks in the last 7 days on momondo
Flights to New Yorkfrom $49
Flights to Los Angelesfrom $49
Flights to Miamifrom $33
Flights to Chicagofrom $58
Flights to Orlandofrom $37
Flights to San Franciscofrom $48
Flights to Las Vegasfrom $46
Flights to Washington, D.C.from $57
Flights to Bostonfrom $59
Flights to Atlantafrom $49
Flights to Dallasfrom $40
Flights to Seattlefrom $54