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>

$244 CHEAP FLIGHTS from Illinois to Sioux City

SUX

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

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Cheapest round-trip

$244

United Airlines

Tue 12/9Sun 12/21

ORD - SUX • Non-stop

Cheapest one-way

$251

United Airlines

Tue 12/23

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

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Illinois to Sioux City that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.

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

Round-trip

One-way

Last minute

Direct

Recent round-trip flight deals from Illinois to Sioux City

Tue, Dec 9 - Sun, Dec 21

9:10 pm - 10:59 pmORD-SUX

1h 49mnonstop

7:50 am - 9:45 amSUX-ORD

1h 55mnonstop

$244United Airlines

Find Deal

Tue, Dec 9 - Sun, Dec 21

9:10 pm - 10:59 pmORD-SUX

1h 49mnonstop

7:50 am - 9:45 amSUX-ORD

1h 55mnonstop

$245United Airlines

Find Deal

Fri, Feb 6 - Sun, Feb 8

3:35 pm - 5:28 pmORD-SUX

1h 53mnonstop

12:45 pm - 2:40 pmSUX-ORD

1h 55mnonstop

$265United Airlines

Find Deal

Wed, Oct 29 - Sun, Nov 2

9:10 pm - 10:59 pmORD-SUX

1h 49mnonstop

7:45 am - 9:32 amSUX-ORD

1h 47mnonstop

$326United Airlines

Find Deal

Tue, Dec 9 - Sun, Dec 21

3:42 pm - 6:10 pmORD-SUX

26h 28m2 stops

7:50 am - 9:45 amSUX-ORD

1h 55mnonstop

$327United Airlines

Find Deal

Tue, Dec 9 - Sun, Dec 21

8:03 pm - 6:10 pmORD-SUX

22h 07m2 stops

7:50 am - 9:45 amSUX-ORD

1h 55mnonstop

$350United Airlines

Find Deal

Tue, Dec 9 - Sun, Dec 21

8:03 pm - 6:10 pmORD-SUX

22h 07m2 stops

7:50 am - 9:45 amSUX-ORD

1h 55mnonstop

$352United Airlines

Find Deal

Tue, Dec 9 - Sun, Dec 21

6:15 pm - 6:10 pmORD-SUX

23h 55m1 stop

7:50 am - 9:45 amSUX-ORD

1h 55mnonstop

$357United Airlines

Find Deal

Tue, Dec 9 - Sun, Dec 21

6:15 pm - 6:10 pmORD-SUX

23h 55m1 stop

7:50 am - 9:45 amSUX-ORD

1h 55mnonstop

$367United Airlines

Find Deal

Tue, Dec 9 - Sun, Dec 21

8:07 pm - 6:10 pmORD-SUX

22h 03m1 stop

7:50 am - 9:45 amSUX-ORD

1h 55mnonstop

$370United Airlines

Find Deal

Useful Info

Low season	April
High season	October
Cheapest flight	$244

Best time to beat the crowds but there is an average 13% increase in price.

Most popular time to fly and prices are also 6% 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)

Not what you’re looking for? Find thousands of other hotels, flights, car rentals and package deals with KAYAK.

SUX

$244 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 last minute 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