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Sioux City

$161+ Cheap flights from Chicago (CHI) to Sioux City (SUX)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/12. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — SUX
Aug 23 — Aug 301
Sat 8/23
Sat 8/30
1 adult, Economy
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Cheap flight deals from Chicago to Sioux City

Discover tips and strategies to find the most affordable flight options for your journey from Chicago (CHI) to Sioux City (SUX). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated August 18, 2025.

Round-trip from

$244
(United Airlines)

One-way from

$161
(United Airlines)

Popular in

June

Cheapest in

December

Average price

$265
From Chicago (CHI) to Sioux City Sioux Gateway
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One-way flight from Chicago (CHI) to Sioux City Sioux Gateway
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Highest demand for flights based on searches. 32% potential increase in price ($196 potential increase over avg. RT price).
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Cheapest flight prices on average. 15% potential price decrease ($53 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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Find flight deals from Chicago to Sioux City

Cheapest flights from Chicago to Sioux City
Explore the most affordable flight options available from Chicago to Sioux City. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 18, 2025.

This United Airlines deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/99:10 pmORD - SUX
Nonstop1h 49mUnited Airlines
Sun 12/217:50 amSUX - ORD
Nonstop1h 55mUnited Airlines
Deal found 8/17$245
This United Airlines deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/19:08 pmORD - SUX
Nonstop1h 52mUnited Airlines
Wed 10/87:50 amSUX - ORD
Nonstop1h 51mUnited Airlines
Deal found 8/17$265
This United Airlines deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/229:05 pmORD - SUX
Nonstop1h 52mUnited Airlines
Mon 8/257:49 amSUX - ORD
Nonstop1h 51mUnited Airlines
Deal found 8/18$354
This United Airlines deal was found by Cheapflights users on 8/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/99:05 pmORD - SUX
Nonstop1h 52mUnited Airlines
Tue 9/166:48 pmSUX - ORD
1 stop25h 53mUnited Airlines
Deal found 8/16$373
This United Airlines deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/19:05 pmORD - SUX
Nonstop1h 52mUnited Airlines
Fri 9/57:49 amSUX - ORD
Nonstop1h 51mUnited Airlines
Deal found 8/17$416

Cheapflights Fare Finder

 
Customize your flight search to find flights from Chicago to Sioux City that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated August 18, 2025.
Use the filters below to find and compare flights from Chicago to Sioux City that are best for you.

Fly from

Chicago

Fly to

Sioux City

Route

Depart

Return

Price

ChicagoSioux City

ORD - SUX

ORDSUX

Chicago O'Hare Intl

Fri 9/12

9:05 pm-10:57 pm

Nonstop1h 52m

Sioux City Sioux Gateway

Sun 9/14

7:49 am-9:40 am

Nonstop1h 51m

$244

ChicagoSioux City

ORD - SUX

ORDSUX

Chicago O'Hare Intl

Tue 12/9

9:10 pm-10:59 pm

Nonstop1h 49m

Sioux City Sioux Gateway

Sun 12/21

7:50 am-9:45 am

Nonstop1h 55m

$245

ChicagoSioux City

ORD - SUX

ORDSUX

Chicago O'Hare Intl

Wed 10/1

9:08 pm-11:00 pm

Nonstop1h 52m

Sioux City Sioux Gateway

Wed 10/8

7:50 am-9:41 am

Nonstop1h 51m

$265

ChicagoSioux City

ORD - SUX

ORDSUX

Chicago O'Hare Intl

Fri 9/12

9:05 pm-10:57 pm

Nonstop1h 52m

$161

ChicagoSioux City

ORD - SUX

ORDSUX

Chicago O'Hare Intl

Sat 8/30

9:05 pm-10:57 pm

Nonstop1h 52m

$251

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/15

Best time to book a flight from Chicago to Sioux City

Have a flexible travel schedule? Discover the best time to fly to Sioux City from Chicago with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

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

What is the cheapest month to book a flight from Chicago to Sioux City?

Currently, October is the cheapest month in which you can book a flight from Chicago to Sioux City (average of $318). Flying from Chicago to Sioux City in March is currently the most expensive (average of $446). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from CHI to SUX?

Find hourly flight availability from Chicago to Sioux City. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 18, 2025.

When flying from Chicago to Sioux City, the time of day you fly usually plays a role in the price. Save by searching for a flight at noon, which can drop the price by up to 5% versus a flight in the morning.

Reviews of airlines servicing Sioux City

Get insights into the airlines that provide service to Sioux City. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Sioux City. Reviews last updated August 18, 2025.
Read through reviews of airlines operating flights from Chicago to Sioux City, such as United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,925 reviews

Crew

8.1

Food

6.6

Overall

7.4

Boarding

7.7

Comfort

7.3

Entertainment

7.1

Reviews

1 / 20
2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!
United Airlines
7.4
Good
8,925 reviews
United Airlines
7.4
Good
8,925 reviews

Crew

8.1

Food

6.6

Overall

7.4

Boarding

7.7

Comfort

7.3

Entertainment

7.1

Reviews

1 / 20
2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!

Related info for your journey

Find useful and relevant information for your journey from Chicago to Sioux City. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Sioux City from Chicago?

    Sioux City Sioux Gateway (SUX), located 7.0 mi from the city center, is the airport you fly into when you book flights from Chicago to Sioux City. 1 airline have flights to Sioux Gateway from Chicago on a regular basis. Booking flights from Chicago to Sioux City Sioux Gateway should not be difficult; the airport handles an average of 0 inbound flights from Chicago per day.

  • How long is the flight from Chicago to Sioux City?

    There are many flights that can get you from Chicago to Sioux City in 1h 52m. Fly via United Airlines to get the fastest option. The distance from Chicago to Sioux City is about 435 mi. Generally, flights for this route are nonstop.

  • What is the cheapest airline to fly from Chicago to Sioux City round-trip?

    Cheapflights users have booked flights from Chicago to Sioux City round-trip from $214. United Airlines is 46% cheaper than the average price of flights available within the next 90 days to this destination.

  • Can I find deals for flights from Chicago to Sioux City that include hotel bookings?

    Yes. In addition to deals on Chicago to Sioux City flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Chicago to Sioux City?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Chicago to Sioux City.

  • Can I find deals for business class flights from Chicago to Sioux City?

    Yes. Cheapflights offers flight deals from Chicago to Sioux City by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Chicago to Sioux City?

    Currently, October is the cheapest month in which you can book a flight from Chicago to Sioux City (average of $318). Flying from Chicago to Sioux City in March is currently the most expensive (average of $446). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Sioux City?

Book flights to Sioux City if you plan to visit one of these locations
Norfolk

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Top airline flying from Chicago to Sioux City

Discover the top airline that operate flights from Chicago to Sioux City. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated August 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$214Average$326FlexibilityNo cancel feeOn-time69%

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