How does KAYAK find such low prices on flights from Illinois to Sioux City?

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 Illinois to Sioux City. Visit our flight page for the latest deals!>/a>

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Illinois to Sioux City?

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Sioux City from Illinois is likely to change within 7 days, so travelers know whether to wait or book now. Visit our flight page for the latest deals!>/a>

What is the Hacker Fare option on flights from Illinois to Sioux City?

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 Sioux City with an airline and back to Illinois with another airline. Visit our flight page for the latest deals!>/a>

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Illinois to Sioux City?

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 Sioux City from Illinois up to 3 days before/after your preferred dates. You can then pick the flights that suit you best. Visit our flight page for the latest deals!>/a>

$161 CHEAP FLIGHTS from Illinois to Sioux City

SUX

KAYAK searches hundreds of travel sites at once for deals on flights to Sioux City

...and more

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Filter your dealsChoose cabin class, free Wi-Fi and more.

Cheapest round-trip

$216

United Airlines

Thu 3/26Sun 3/29

ORD - SUX • Non-stop

Cheapest one-way

$161

United Airlines

Thu 3/12

ORD - SUX • Non-stop

Start a new search

KAYAK searches 100s of sites at once to find you the best travel deals.

We hope you love your trip to Sioux City!

Flight Deals

Cheap Flights from Illinois to Sioux City

Discover the best prices for you by selecting your travel dates on KAYAK.

Round-trip

One-way

Direct

Recent round-trip flight deals from Illinois to Sioux City

Thu, Mar 26 - Sun, Mar 29

3:50 pm - 5:41 pm

ORD

SUX

1h 51mnonstop

12:55 pm - 2:40 pm

SUX

ORD

1h 45mnonstop

$216United Airlines

Fri, Mar 27 - Mon, Mar 30

3:50 pm - 5:41 pm

ORD

SUX

1h 51mnonstop

12:55 pm - 2:40 pm

SUX

ORD

1h 45mnonstop

$244United Airlines

Thu, Mar 12 - Tue, Apr 7

3:50 pm - 5:41 pm

ORD

SUX

1h 51mnonstop

12:55 pm - 2:40 pm

SUX

ORD

1h 45mnonstop

$265United Airlines

Mon, Mar 2 - Fri, Mar 6

3:50 pm - 5:41 pm

ORD

SUX

1h 51mnonstop

12:53 pm - 2:40 pm

SUX

ORD

1h 47mnonstop

$326United Airlines

Fri, Mar 27 - Mon, Mar 30

3:50 pm - 5:41 pm

ORD

SUX

1h 51mnonstop

6:32 pm - 9:37 am

SUX

ORD

15h 05m

1 stop

$368United Airlines

Wed, Mar 18 - Wed, Mar 25

7:42 pm - 10:45 am

ORD

SUX

15h 03m

2 stops

12:53 pm - 2:40 pm

SUX

ORD

1h 47mnonstop

$372United Airlines

Thu, Mar 12 - Tue, Apr 7

9:39 pm - 10:45 am

ORD

SUX

13h 06m

1 stop

12:55 pm - 2:40 pm

SUX

ORD

1h 45mnonstop

$374United Airlines

Thu, Mar 26 - Sun, Mar 29

7:50 pm - 10:45 am

ORD

SUX

14h 55m

2 stops

12:55 pm - 2:40 pm

SUX

ORD

1h 45mnonstop

$379United Airlines

Mon, Jun 22 - Mon, Jun 29

10:55 pm - 10:57 am

ORD

SUX

12h 02m

1 stop

9:03 am - 10:55 am

SUX

ORD

1h 52mnonstop

$391United Airlines

Wed, Mar 18 - Wed, Mar 25

3:50 pm - 5:41 pm

ORD

SUX

1h 51mnonstop

12:53 pm - 2:40 pm

SUX

ORD

1h 47mnonstop

$397United Airlines

Useful Info

Low season	August
High season	February
Cheapest flight	$161

Best time to beat the crowds but there is an average 7% increase in price.

Most popular time to fly and prices are also 7% lower on average.

Flight from Chicago to Sioux City

How does KAYAK find such low prices on flights from Illinois to Sioux City?
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 Illinois to Sioux City.
How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Illinois to Sioux City?
KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Sioux City from Illinois 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 Illinois to Sioux City?
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 Sioux City with an airline and back to Illinois with another airline.
What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Illinois to Sioux City?
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 Sioux City from Illinois up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Everything you need to know for your flight to Sioux City

Airports

Cabin class

Complete your trip

Direct Flights

Flights to other cities

Origins

Other airports

Return flight deals

Information on the airport you'll fly into in Sioux City

Sioux City (SUX)

SUX

$161 Find Cheap Flights from Illinois to Sioux City

KAYAK searches hundreds of travel sites at once for deals on flights to Sioux City

Everything you should know

Cheap Flights from Illinois to Sioux City

Recent round-trip flight deals from Illinois to Sioux City

Recent one-way flight deals from Illinois to Sioux City

Recent direct flight deals from Illinois to Sioux City

Good to know

FAQs for booking flights from Illinois to Sioux City

How does KAYAK find such low prices on flights from Illinois to Sioux City?

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 Illinois to Sioux City.

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Illinois to Sioux City?

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Sioux City from Illinois 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 Illinois to Sioux City?

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 Sioux City with an airline and back to Illinois with another airline.

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Illinois to Sioux City?

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 Sioux City from Illinois up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Everything you need to know for your flight to Sioux City

Information on the airport you'll fly into in Sioux City

Cabin class types available on flights to Illinois

Complete your trip to Sioux City with a hotel stay or car rental

Find direct flights for Sioux City

Flights to other popular destinations

Flights from domestic origins to Sioux City

Choose which airport to fly into in Sioux City

Find deals for your return flight