ORD - SUX

$161 Find Cheap Flights from Chicago to Sioux City

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Chicago to Sioux City departing on 7/25. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy

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

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Chicago to Sioux City, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Chicago to Sioux City, as well as popular online travel agencies
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 20% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

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

Flights Deals
Useful Info
Flights Deals

Cheap Flights from Chicago to Sioux City (ORD-SUX)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Chicago 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.

Recent round-trip flight deals from Chicago to Sioux City

Fri, Aug 22 - Mon, Aug 25
United Airlines Logo
9:05 pm - 10:57 pmORD-SUX
1h 52mnonstop
United Airlines Logo
7:49 am - 9:40 amSUX-ORD
1h 51mnonstop
$244United Airlines
Find Deal
Fri, Aug 22 - Mon, Aug 25
United Airlines Logo
9:05 pm - 10:57 pmORD-SUX
1h 52mnonstop
United Airlines Logo
6:48 pm - 1:15 pmSUX-ORD
18h 27m1 stop
$357United Airlines
Find Deal
Fri, Aug 22 - Mon, Aug 25
United Airlines Logo
9:05 pm - 10:57 pmORD-SUX
1h 52mnonstop
United Airlines Logo
6:48 pm - 11:08 amSUX-ORD
16h 20m2 stops
$376United Airlines
Find Deal
Fri, Jul 25 - Fri, Aug 1
United Airlines Logo
8:50 pm - 10:40 pmORD-SUX
1h 50mnonstop
United Airlines Logo
6:53 pm - 9:41 amSUX-ORD
14h 48m1 stop
$408United Airlines
Find Deal
Sat, Jul 26 - Tue, Jul 29
United Airlines Logo
8:50 pm - 10:40 pmORD-SUX
1h 50mnonstop
United Airlines Logo
6:53 pm - 11:43 amSUX-ORD
16h 50m2 stops
$410United Airlines
Find Deal
Sat, Jul 26 - Tue, Jul 29
United Airlines Logo
5:00 am - 6:18 pmORD-SUX
13h 18m1 stop
United Airlines Logo
10:10 am - 11:54 amSUX-ORD
1h 44mnonstop
$415United Airlines
Find Deal
Thu, Jul 10 - Sun, Jul 13
United Airlines Logo
8:50 pm - 10:40 pmORD-SUX
1h 50mnonstop
United Airlines Logo
10:10 am - 11:54 amSUX-ORD
1h 44mnonstop
$416United Airlines
Find Deal
Thu, Jul 10 - Sun, Jul 13
United Airlines Logo
8:50 pm - 10:40 pmORD-SUX
1h 50mnonstop
United Airlines Logo
6:53 pm - 7:43 amSUX-ORD
12h 50m2 stops
$431United Airlines
Find Deal
Thu, Jul 10 - Sun, Jul 13
United Airlines Logo
8:50 pm - 10:40 pmORD-SUX
1h 50mnonstop
United Airlines Logo
10:10 am - 11:54 amSUX-ORD
1h 44mnonstop
$442United Airlines
Find Deal
Thu, Jul 3 - Sun, Jul 6
United Airlines Logo
8:50 pm - 10:40 pmORD-SUX
1h 50mnonstop
United Airlines Logo
10:10 am - 11:54 amSUX-ORD
1h 44mnonstop
$458United Airlines
Find Deal
Useful Info

KAYAK's insights & trends for Chicago to Sioux City flights

Get data-powered insights and trends into flights from Chicago to Sioux City to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from Chicago to Sioux City?

The average price of all round-trip flights from Chicago O'Hare Intl Airport to Sioux City clicked on KAYAK for each day over the last 12 months.

For Chicago to Sioux City, Thursday is the cheapest day to fly on average and Sunday is the most expensive. Flying from Sioux City back to Chicago, the best deals are generally found on Tuesday, with Sunday being the most expensive.

What is the cheapest month to fly from Chicago O'Hare Intl Airport to Sioux City?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Chicago O'Hare Intl Airport to Sioux City, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Chicago O'Hare Intl Airport to Sioux City is January, where tickets cost $214 (return) on average. On the other hand, the most expensive months are May and February, where the average cost of round-trip tickets is $566 and $490 respectively.

Good to know

Low seasonJanuary
High seasonAugust
Cheapest flight$161
Best time to beat the crowds with an average 38% drop in price.
Most popular time to fly and prices are also 24% lower on average.
Flight from Chicago to Sioux City

When to book flights from Chicago to Sioux City

Are your dates flexible? Find out the best times to travel from Chicago to Sioux City based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Chicago to Sioux City flights

  • What is the cheapest flight from Chicago O'Hare Intl Airport to Sioux City?

    In the last 3 days, the lowest price for a flight from Chicago O'Hare Intl Airport to Sioux City was $161 for a one-way ticket and $244 for a round-trip.

  • Do I need a passport to fly between Chicago and Sioux City?

    Even though you are not required to have a passport, keep in mind that an official ID is needed to board the airplane.

  • Which aircraft models fly most regularly from Chicago to Sioux City?

    The Canadair (Bombardier) Regional Jet is the aircraft model that flies most regularly on the Chicago to Sioux City flight route.

  • Which airline alliances offer flights from Chicago to Sioux City?

    Star Alliance is the only airline alliance operating flights between Chicago and Sioux City.

  • On which days can I fly direct from Chicago to Sioux City?

    There are nonstop flights from Chicago to Sioux City on a daily basis.

  • How does KAYAK find such low prices on flights from Chicago 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 Chicago to Sioux City.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Sioux City from Chicago 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 Chicago 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 Chicago with another airline. Booking your flights between Chicago and SUX can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Chicago 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 Chicago up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Prefer to fly direct from Chicago to Sioux City?

Find which airlines fly direct from Chicago O'Hare Intl Airport to Sioux City Sioux Gateway Airport, which days they fly and book direct flights.

Direct departures

Chicago O'Hare Intl to Sioux City Sioux Gateway

Monday

United Airlines

United Airlines

Tuesday

United Airlines

United Airlines

Wednesday

United Airlines

United Airlines

Thursday

United Airlines

United Airlines

Friday

United Airlines

United Airlines

Saturday

United Airlines

United Airlines

Sunday

United Airlines

United Airlines

See more direct flights

Direct returns

Sioux City Sioux Gateway to Chicago O'Hare Intl

Monday

United Airlines

United Airlines

Tuesday

United Airlines

United Airlines

Wednesday

United Airlines

United Airlines

Thursday

United Airlines

United Airlines

Friday

United Airlines

United Airlines

Saturday

United Airlines

United Airlines

Sunday

United Airlines

United Airlines

See more direct flights
See more direct flights

Top airline flying from Chicago to Sioux City

 
See real verified KAYAK customer reviews for airlines flying from Chicago to Sioux City. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Chicago to Sioux City? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
United AirlinesOverall score based on 8790 reviews
7.7Boarding
7.3Comfort
7.0Entertainment
6.6Food
8.1Crew
Airline reviews

I was charged for my daughters bag when I am supposed to receive two free checked bags with my United Explorer card.

6.0 GoodAndrea, May 2025ORD - ATL
Read more United Airlines reviews

I was charged for my daughters bag when I am supposed to receive two free checked bags with my United Explorer card.

The schedule to Moline changed 5 times. The gate changed 6 times. That is a pathetic way to run an airline. No wonder that no one in our company flies on United Express to or from Moline. Changes happen most of the time. I learned my lesson on this trip…never again!

Flight was great. Efficient boarding. Short flight. Early arrival. Friendly flight crew. The entertainment system did not work well. Could not access it until the aircraft reached 10K feet or more. Lots of glitches.

A bit rush for transit. Food and entertainment are not available

Smooth boarding process. Early departure, smooth flight, early arrival. The entertainment package has very good recent movie options. The flight crew were friendly and professional.

My flight was scheduled for about 6:05 departure. There were 11 gate changes from 4-7pm and the flight was 3 hours delayed due to operational issues. The plane taxied around the airport for about half an hour before stopping to be de-iced. It would have been nice if we were alerted of the plan to de-ice prior to the 30 minute drive around the airport. The flight attendant was friendly, which was the only redeeming thing about this flight. As a former flight attendant for United, I was extremely disappointed.

Delays took 2hours and thirty minutes making me miss my connecting flight and make me sit in the Chicago airport for 9 hours

Had a short delay once we boarded the aircraft in Chicago, but it was fixed in no time flat then we were on our way. The pilot was able to make up the time lost and we landed 5 minute later then schedualed . Great service

Our seats were all the way in back of the plane,

The seats on this flight were almost roomy enough to be the basic amount needed for human existence. I think my favorite part of this flight was it landed at an A gate, which was the most palatial part of Sea-Tac I've ever seen - a massive improvement from the S gates.

Everything you need to know for your flight from Chicago to Sioux City

Information on your arrival and departure airports

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