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 1/23. 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, 0 bags

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
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Everything you should know

Cheapest round-trip
$204
United Airlines
Thu 2/5Sun 2/8
ORD - SUX • Non-stop
Cheapest one-way
$161
United Airlines
Fri 1/23
ORD - SUX • Non-stop
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We hope you love your trip to Sioux City!
Flight Deals
Booking Insights
Flight 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

Thu, Feb 5 - Sun, Feb 8
United Airlines Logo
3:35 pm - 5:28 pm
ORD
-
SUX
1h 53mnonstop
United Airlines Logo
12:45 pm - 2:40 pm
SUX
-
ORD
1h 55mnonstop
$204United Airlines
Fri, Feb 6 - Sun, Feb 8
United Airlines Logo
3:35 pm - 5:28 pm
ORD
-
SUX
1h 53mnonstop
United Airlines Logo
12:45 pm - 2:40 pm
SUX
-
ORD
1h 55mnonstop
$244United Airlines
Sat, Jan 10 - Sat, Jan 17
United Airlines Logo
8:50 am - 11:47 pm
ORD
-
SUX
14h 57m2 stops
United Airlines Logo
12:45 pm - 2:40 pm
SUX
-
ORD
1h 55mnonstop
$374United Airlines
Fri, Jan 9 - Sun, Jan 11
United Airlines Logo
3:35 pm - 5:28 pm
ORD
-
SUX
1h 53mnonstop
United Airlines Logo
6:43 pm - 9:44 am
SUX
-
ORD
15h 01m1 stop
$375United Airlines
Fri, Feb 6 - Sun, Feb 8
United Airlines Logo
2:36 pm - 10:55 am
ORD
-
SUX
20h 19m1 stop
United Airlines Logo
12:45 pm - 2:40 pm
SUX
-
ORD
1h 55mnonstop
$377United Airlines
Thu, Feb 5 - Sun, Feb 8
United Airlines Logo
9:17 am - 11:47 pm
ORD
-
SUX
14h 30m2 stops
United Airlines Logo
12:45 pm - 2:40 pm
SUX
-
ORD
1h 55mnonstop
$378United Airlines
Fri, Feb 6 - Sun, Feb 8
United Airlines Logo
3:35 pm - 5:28 pm
ORD
-
SUX
1h 53mnonstop
United Airlines Logo
6:00 am - 6:22 am
SUX
-
ORD
24h 22m2 stops
$383United Airlines
Fri, Feb 6 - Sun, Feb 8
United Airlines Logo
3:35 pm - 5:28 pm
ORD
-
SUX
1h 53mnonstop
United Airlines Logo
6:00 am - 8:04 am
SUX
-
ORD
26h 04m2 stops
$394United Airlines
Thu, Feb 5 - Sun, Feb 8
United Airlines Logo
7:00 am - 11:47 pm
ORD
-
SUX
16h 47m1 stop
United Airlines Logo
12:45 pm - 2:40 pm
SUX
-
ORD
1h 55mnonstop
$410United Airlines
Sat, Jan 10 - Sat, Jan 17
United Airlines Logo
8:50 am - 11:47 pm
ORD
-
SUX
14h 57m2 stops
United Airlines Logo
6:43 pm - 9:45 am
SUX
-
ORD
15h 02m2 stops
$875United Airlines
Booking Insights

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, Friday 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 Friday, with Sunday being the most expensive.

Good to know

Cheapest flight$161
Most popular time to fly and prices are also 8% 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 $204 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?

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

Reviews of the 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 9091 reviews
7.3Comfort
7.1Entertainment
7.7Boarding
8.1Crew
6.6Food
Airline reviews

After a delay at the gate, C3, at Ohare on Sunday, I left my Blk ski coat on the bench at the gate, lost! Please review my lob claim, thx.

8.0 Excellentt, Dec 2025
ORD - RSW
Read more United Airlines reviews

After a delay at the gate, C3, at Ohare on Sunday, I left my Blk ski coat on the bench at the gate, lost! Please review my lob claim, thx.

Very thoughtful flight attendant offered me water immediately since I had run to make my connection.

Always wish for more healthy, gluten free options. We have to bring our own.

Having a long layover, I was very appreciative of the ability to stand by for an earlier flight. Other airlines like Delta have refused this to me in the past, just to be mean (because my ticket class wasn't high enough). United went out of their way to help me get to my destination early, which I really appreciated given that it was the third leg of a 24+ hour journey for me.

Other than a way way too cold cabinets for the entire flight, all was great

One bag is incorrect and not acceptable for an international flight. The food was not just good. I won't fly with them again.

Excellent flight. Smooth, efficient boarding. Quick flight. Arrived early at STL.

I will never book a flight through Cheap fare. They booked me from Portland Main . And would not give me a refund, so I bought 2 tickets one for 299. From Portland Main to ORD. Then I had to buy a ticket from Oregon PDX to ORD that was another 440. So Just so you know they even told me it was there fault but no refund. Bad bussniess. I did inform United but they said they couldn't help me due to the fact I booked through Cheap Tickets. Never again. And I'm spreding the word. I let everyone know at my 50th class reunion

Crew and customer service were excellent. This flight also had plenty of leg room and seat mounted screens for entertainment. A very pleasant flight all around!

It would have been better if the crew has supported my husband's reasons for needing to keep the space clear around his feet, rather than insisting that he put his knapsack in that space.

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

Information on your arrival and departure airports