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

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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

Direct

Recent round-trip flight deals from Illinois to Sioux City

Sat, Sep 27 - Sat, Oct 4

9:08 pm - 11:00 pmORD-SUX

1h 52mnonstop

7:50 am - 9:41 amSUX-ORD

1h 51mnonstop

$204United 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

$286United 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

$287United Airlines

Find Deal

Sat, Sep 27 - Sat, Oct 4

8:09 pm - 6:14 pmORD-SUX

22h 05m1 stop

7:50 am - 9:41 amSUX-ORD

1h 51mnonstop

$354United Airlines

Find Deal

Sat, Sep 27 - Sat, Oct 4

9:08 pm - 11:00 pmORD-SUX

1h 52mnonstop

6:51 pm - 9:43 amSUX-ORD

14h 52m2 stops

$359United Airlines

Find Deal

Tue, Dec 9 - Sun, Dec 21

7:15 am - 6:10 pmORD-SUX

10h 55m2 stops

7:50 am - 9:45 amSUX-ORD

1h 55mnonstop

$370United Airlines

Find Deal

Tue, Dec 9 - Sun, Dec 21

7:15 am - 6:10 pmORD-SUX

10h 55m2 stops

7:50 am - 9:45 amSUX-ORD

1h 55mnonstop

$371United Airlines

Find Deal

Fri, Oct 31 - Sun, Nov 2

8:00 pm - 6:08 pmORD-SUX

22h 08m1 stop

7:45 am - 9:32 amSUX-ORD

1h 47mnonstop

$372United Airlines

Find Deal

Mon, Sep 29 - Mon, Oct 6

9:08 pm - 11:00 pmORD-SUX

1h 52mnonstop

6:51 pm - 11:42 amSUX-ORD

16h 51m2 stops

$388United Airlines

Find Deal

Fri, Sep 19 - Sat, Sep 20

9:05 pm - 10:57 pmORD-SUX

1h 52mnonstop

6:48 pm - 9:52 amSUX-ORD

15h 04m2 stops

$389United Airlines

Find Deal

Useful Info

Low season	April
High season	September
Cheapest flight	$161

Best time to beat the crowds but there is an average 19% increase in price.

Most popular time to fly and prices are also 10% 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

$161 Find Cheap Flights from Illinois to Sioux City

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

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