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Sioux City

$204+ Cheap flights from Chicago (CHI) to Sioux City (SUX)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/10. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — SUX
Oct 15 — Oct 221
Wed 10/15
Wed 10/22
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 September 15, 2025.

Round-trip from

$204
(United Airlines)

Popular in

June

Cheapest in

December

Average price

$405

Good round-trip deal

$472 or less
From Chicago (CHI) to Sioux City Sioux Gateway
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Highest demand for flights based on searches. 33% potential increase in price ($198 potential increase over avg. RT price).
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Cheapest flight prices on average. 15% potential price decrease ($54 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Price to beat on a round-trip flight from Chicago (CHI) to Sioux City Sioux Gateway.
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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 September 15, 2025.

This United Airlines deal was found by Cheapflights users on 9/15. 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 10/109:08 pmORD - SUX
Nonstop1h 52mUnited Airlines
Mon 10/137:50 amSUX - ORD
Nonstop1h 51mUnited Airlines
Deal found 9/15$204
This United Airlines deal was found by Cheapflights users on 9/14. 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 11/79:10 pmORD - SUX
Nonstop1h 49mUnited Airlines
Sun 11/97:45 amSUX - ORD
Nonstop1h 47mUnited Airlines
Deal found 9/14$244
This United Airlines deal was found by Cheapflights users on 9/14. 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 9/14$245
This United Airlines deal was found by Cheapflights users on 9/14. 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.
Sat 11/159:10 pmORD - SUX
Nonstop1h 49mUnited Airlines
Mon 11/177:45 amSUX - ORD
Nonstop1h 47mUnited Airlines
Deal found 9/14$265
This United Airlines deal was found by Cheapflights users on 9/15. 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 10/39:08 pmORD - SUX
Nonstop1h 52mUnited Airlines
Sun 10/57:50 amSUX - ORD
Nonstop1h 51mUnited Airlines
Deal found 9/15$326
This United Airlines deal was found by Cheapflights users on 9/14. 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.
Sat 11/87:30 amORD - SUX
2 stops10h 38mUnited Airlines
Sun 11/97:45 amSUX - ORD
Nonstop1h 47mUnited Airlines
Deal found 9/14$327
This United Airlines deal was found by Cheapflights users on 9/14. 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 11/147:25 amORD - SUX
2 stops10h 43mUnited Airlines
Tue 11/187:45 amSUX - ORD
Nonstop1h 47mUnited Airlines
Deal found 9/14$350
This United Airlines deal was found by Cheapflights users on 9/15. 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.
Thu 10/239:08 pmORD - SUX
Nonstop1h 52mUnited Airlines
Mon 10/277:45 amSUX - ORD
Nonstop1h 47mUnited Airlines
Deal found 9/15$355

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 September 15, 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 10/10

9:08 pm-11:00 pm

Nonstop1h 52m

Sioux City Sioux Gateway

Mon 10/13

7:50 am-9:41 am

Nonstop1h 51m

$204

ChicagoSioux City

ORD - SUX

ORDSUX

Chicago O'Hare Intl

Sat 11/8

9:10 pm-10:59 pm

Nonstop1h 49m

Sioux City Sioux Gateway

Sun 11/9

7:45 am-9:32 am

Nonstop1h 47m

$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

$244

ChicagoSioux City

ORD - SUX

ORDSUX

Chicago O'Hare Intl

Sat 11/15

9:10 pm-10:59 pm

Nonstop1h 49m

Sioux City Sioux Gateway

Tue 11/18

7:45 am-9:32 am

Nonstop1h 47m

$265

ChicagoSioux City

ORD - SUX

ORDSUX

Chicago O'Hare Intl

Sat 11/15

9:10 pm-10:59 pm

Nonstop1h 49m

Sioux City Sioux Gateway

Mon 11/17

7:45 am-9:32 am

Nonstop1h 47m

$265

ChicagoSioux City

ORD - SUX

ORDSUX

Chicago O'Hare Intl

Fri 10/3

9:08 pm-11:00 pm

Nonstop1h 52m

Sioux City Sioux Gateway

Sun 10/5

7:50 am-9:41 am

Nonstop1h 51m

$326

ChicagoSioux City

ORD - SUX

ORDSUX

Chicago O'Hare Intl

Sat 11/8

9:10 pm-10:59 pm

Nonstop1h 49m

Sioux City Sioux Gateway

Tue 11/11

6:46 pm-11:36 am

2 stops16h 50m

$347

ChicagoSioux City

ORD - SUX

ORDSUX

Chicago O'Hare Intl

Sun 10/5

9:08 pm-11:00 pm

Nonstop1h 52m

$251

ChicagoSioux City

ORD - SUX

ORDSUX

Chicago O'Hare Intl

Sun 9/21

8:08 pm-6:13 pm

1 stop22h 05m

$547

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/14

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 September 15, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Chicago to Sioux City as you normally would.

Weekly flight availability from Chicago to Sioux City

Explore weekly flight availability from Chicago to Sioux City. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated September 15, 2025.

The most flights from CHI to SUX are scheduled on a Monday (1 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (1 on average).

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 September 15, 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
8,929 reviews

Entertainment

7.1

Boarding

7.7

Crew

8.1

Food

6.6

Overall

7.4

Comfort

7.3

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
8,929 reviews
United Airlines
7.4
Good
8,929 reviews

Entertainment

7.1

Boarding

7.7

Crew

8.1

Food

6.6

Overall

7.4

Comfort

7.3

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 1 inbound flight 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.

  • What are the cheapest flights from Chicago to Sioux City?

    On average you can expect to pay $490 for a flight from Chicago to Sioux City. The cheapest flight overall is $416 while the most popular route, (Chicago O'Hare Intl - Sioux City Sioux Gateway) is currently priced at $204.

  • 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

Browse thousands of different options on Cheapflights for your next trip

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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 September 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$214Average$416FlexibilityNo cancel feeOn-time69%

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