SUX - ORD

$166 Find Cheap Flights from Sioux City to Chicago

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Sioux City to Chicago departing on 10/4. 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 Chicago O'Hare Intl Airport

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Sioux City to Chicago, 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 Sioux City to Chicago, as well as popular online travel agencies
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Flight Deals

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

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

Fri, Dec 26 - Tue, Dec 30
United Airlines Logo
7:50 am - 9:45 amSUX-ORD
1h 55mnonstop
United Airlines Logo
9:18 pm - 11:15 pmORD-SUX
1h 57mnonstop
$265United Airlines
Find Deal
Tue, Oct 14 - Wed, Oct 15
United Airlines Logo
7:50 am - 9:41 amSUX-ORD
1h 51mnonstop
United Airlines Logo
9:08 pm - 11:00 pmORD-SUX
1h 52mnonstop
$326United Airlines
Find Deal
Fri, Sep 19 - Mon, Sep 22
United Airlines Logo
6:48 pm - 4:45 pmSUX-ORD
21h 57m2 stops
United Airlines Logo
9:05 pm - 10:57 pmORD-SUX
1h 52mnonstop
$383United Airlines
Find Deal
Fri, Sep 19 - Mon, Sep 22
United Airlines Logo
6:48 pm - 2:55 pmSUX-ORD
20h 07m1 stop
United Airlines Logo
9:05 pm - 10:57 pmORD-SUX
1h 52mnonstop
$401United Airlines
Find Deal
Sun, Aug 31 - Thu, Sep 4
United Airlines Logo
7:49 am - 9:40 amSUX-ORD
1h 51mnonstop
United Airlines Logo
9:05 pm - 10:57 pmORD-SUX
1h 52mnonstop
$416United Airlines
Find Deal
Tue, Oct 14 - Wed, Oct 15
United Airlines Logo
7:50 am - 9:41 amSUX-ORD
1h 51mnonstop
United Airlines Logo
7:25 am - 6:14 pmORD-SUX
10h 49m2 stops
$417United Airlines
Find Deal
Fri, Sep 19 - Mon, Sep 22
United Airlines Logo
6:48 pm - 6:55 pmSUX-ORD
24h 07m2 stops
United Airlines Logo
9:50 pm - 6:13 pmORD-SUX
20h 23m2 stops
$430United Airlines
Find Deal
Sat, Aug 30 - Mon, Sep 1
United Airlines Logo
6:48 pm - 8:10 pmSUX-ORD
25h 22m2 stops
United Airlines Logo
9:05 pm - 10:57 pmORD-SUX
1h 52mnonstop
$444United Airlines
Find Deal
Tue, Oct 14 - Wed, Oct 15
United Airlines Logo
7:50 am - 9:41 amSUX-ORD
1h 51mnonstop
United Airlines Logo
9:44 pm - 6:14 pmORD-SUX
20h 30m1 stop
$446United Airlines
Find Deal
Fri, Sep 19 - Mon, Sep 22
United Airlines Logo
6:48 pm - 7:57 pmSUX-ORD
25h 09m1 stop
United Airlines Logo
7:19 am - 6:13 pmORD-SUX
10h 54m2 stops
$453United Airlines
Find Deal
Booking Insights

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

Get data-powered insights and trends into flights from Sioux City to Chicago 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 Sioux City to Chicago?

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

When flying from Sioux City to Chicago, you should consider leaving on a Thursday and avoid Sundays if you are looking for the best rates. For your return to Sioux City, you’ll find the best rates on Fridays and the most expensive ones on Mondays.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Sioux City to Chicago O'Hare Intl Airport, 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 Sioux City to Chicago O'Hare Intl Airport is February, where tickets cost $237 (return) on average. On the other hand, the most expensive months are January and April, where the average cost of round-trip tickets is $548 and $437 respectively.

Good to know

Low seasonJanuary
Cheapest flight$166
Best time to beat the crowds but there is an average 59% increase in price.
Most popular time to fly and prices are also 14% lower on average.
Flight from Sioux City to Chicago

When to book flights from Sioux City to Chicago

Are your dates flexible? Find out the best times to travel from Sioux City to Chicago 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 Sioux City to Chicago flights

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

    In the last 3 days, the lowest price for a flight from Sioux City to Chicago O'Hare Intl Airport was $166 for a one-way ticket and $265 for a round-trip.

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

    No

  • Which airports will I be using when flying from Sioux City to Chicago?

    Sioux City and Chicago are both served by 1 main airport. You will leave Sioux City from Sioux City Sioux Gateway and will be arriving at Chicago O'Hare Intl.

  • Which airlines offer Wi-Fi service onboard planes from Sioux City to Chicago?

    Delta, and American Airlines offer inflight Wi-Fi service on the Sioux City to Chicago flight route.

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

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

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

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

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

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

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

    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 Sioux City to Chicago.

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

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

    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 Chicago with an airline and back to Sioux City with another airline. Booking your flights between Sioux City and ORD 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 Sioux City to Chicago?

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

KAYAK’s top tips for finding a cheap flight from Sioux City to Chicago O'Hare Intl Airport

  • Looking for a cheap flight? 25% of our users found flights on this route for $223 or less one-way and $384 or less round-trip.

Prefer to fly direct from Sioux City to Chicago?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from Sioux City Sioux Gateway to Chicago O'Hare Intl.
Find which airlines fly direct from Sioux City Sioux Gateway Airport to Chicago O'Hare Intl Airport, which days they fly and book direct flights.

Direct departures

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

Direct returns

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

Reviews of the top airline flying from Sioux City to Chicago

 
See real verified KAYAK customer reviews for airlines flying from Sioux City to Chicago. 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 Sioux City to Chicago? 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 8925 reviews
7.1Entertainment
6.6Food
7.3Comfort
7.7Boarding
8.1Crew
Airline reviews

Flight attendant in first class gave poor service (like he didn't want to be there) and food was awful. We sat waiting for gate upon arrival over 45 mins.

2.0 MediocreAnonymous, Aug 2025RSW - ORD
Read more United Airlines reviews

Flight attendant in first class gave poor service (like he didn't want to be there) and food was awful. We sat waiting for gate upon arrival over 45 mins.

Weather delay in Chicago?. No sense of urgency to make connection in Chicago for our connecting flight that wasn't delayed. Connection was missed.

Overall it was good. I missed my connection but I was put on another flight.

Overall a very poor experience - booked premium economy tickets but due to last minute flight delays , all my itinery went for a toss and had to fly economy class with no access to lounge or any compensation by united airlines to make up for the flight delays . i had expected better experience than that from united.

It was fine, definitely older planes with no charging or anything. There’s no entertainment set up on board, but it is nice that they allow you to access the in flight entertainment from your phone without having to pay for the Wi-Fi and they do offer free texting.

I liked that the flight was nonstop from ORD to CIU for $200 round trip.

While the staff was pleasant and helpful, the following observations are for your awareness. There was some delay on the tarmac on take off and landing. The paid lunch/food offerings were limited. Entertainment was only available on WiFi at a cost.

The first flight was better in terms of the aircraft.

Smooth flight. Boarding was chaotic. Could not hear the gate agent over the intercom. People were lined up in the wrong lines. Groups one and two were told to board through line one and group 3 through line 2. All very confusing. Once in the air, the flight was smooth. There was no entertainment option on this aircraft, even though it was a larger aircraft.

Overall poor for me I paid extra for seats with leg room and my regional flights exit row seats have less leg room then the others that's money that could have been saved and on my final flight home the flights air was not operating it was unbearably hot in the cabin I will be contacting United and filing a DOT complaint

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

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