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Sioux City

$244+ 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 12/9. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — SUX
Nov 15 — Nov 221
Sat 11/15
Sat 11/22
1 adult, Economy
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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 October 16, 2025.

This United Airlines deal was found by Cheapflights users on 10/13. 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 10/13$244
This United Airlines deal was found by Cheapflights users on 10/15. 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 11/272:00 pmORD - SUX
Nonstop1h 55mUnited Airlines
Fri 11/287:45 amSUX - ORD
Nonstop1h 47mUnited Airlines
Deal found 10/15$265
This United Airlines deal was found by Cheapflights users on 10/14. 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.
Wed 10/299:10 pmORD - SUX
Nonstop1h 49mUnited Airlines
Sun 11/27:45 amSUX - ORD
Nonstop1h 47mUnited Airlines
Deal found 10/14$326
This United Airlines deal was found by Cheapflights users on 10/15. 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.
Wed 11/269:10 pmORD - SUX
Nonstop1h 49mUnited Airlines
Thu 11/277:45 amSUX - ORD
Nonstop1h 47mUnited Airlines
Deal found 10/15$355
This United Airlines deal was found by Cheapflights users on 10/15. 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.
Wed 11/269:10 pmORD - SUX
Nonstop1h 49mUnited Airlines
Fri 11/287:45 amSUX - ORD
Nonstop1h 47mUnited Airlines
Deal found 10/15$416

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 October 16, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$244
(United Airlines)

Popular in

June

Cheapest in

December

Average price

$414

Good round-trip deal

$204 or less
Provider with most accurate pricing for Chicago (CHI)-Sioux City Sioux Gateway flight deals.
Search Deals
Provider most trusted by Cheapflights users for Chicago (CHI)-Sioux City Sioux Gateway flights.
Search Deals
From Chicago (CHI) to Sioux City Sioux Gateway
Search Deals
Highest demand for flights based on searches. 32% potential increase in price ($192 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 15% potential price decrease ($53 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
Search Deals
Price to beat on a round-trip flight from Chicago (CHI) to Sioux City Sioux Gateway.
Search Deals

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 October 16, 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

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

Thu 11/27

2:00 pm-3:55 pm

Nonstop1h 55m

Sioux City Sioux Gateway

Fri 11/28

7:45 am-9:32 am

Nonstop1h 47m

$265

ChicagoSioux City

ORD - SUX

ORDSUX

Chicago O'Hare Intl

Fri 10/31

9:10 pm-10:59 pm

Nonstop1h 49m

Sioux City Sioux Gateway

Tue 11/4

7:45 am-9:32 am

Nonstop1h 47m

$326

ChicagoSioux City

ORD - SUX

ORDSUX

Chicago O'Hare Intl

Wed 11/19

9:10 pm-10:59 pm

Nonstop1h 49m

Sioux City Sioux Gateway

Thu 11/20

7:45 am-9:32 am

Nonstop1h 47m

$326

ChicagoSioux City

ORD - SUX

ORDSUX

Chicago O'Hare Intl

Wed 11/26

9:10 pm-10:59 pm

Nonstop1h 49m

Sioux City Sioux Gateway

Fri 11/28

7:45 am-9:32 am

Nonstop1h 47m

$326

ChicagoSioux City

ORD - SUX

ORDSUX

Chicago O'Hare Intl

Wed 10/29

9:10 pm-10:59 pm

Nonstop1h 49m

Sioux City Sioux Gateway

Sun 11/2

7:45 am-9:32 am

Nonstop1h 47m

$326

ChicagoSioux City

ORD - SUX

ORDSUX

Chicago O'Hare Intl

Wed 11/26

9:10 pm-10:59 pm

Nonstop1h 49m

Sioux City Sioux Gateway

Thu 11/27

7:45 am-9:32 am

Nonstop1h 47m

$355

ChicagoSioux City

ORD - SUX

ORDSUX

Chicago O'Hare Intl

Wed 10/22

9:08 pm-11:00 pm

Nonstop1h 52m

$293

ChicagoSioux City

ORD - SUX

ORDSUX

Chicago O'Hare Intl

Tue 10/21

10:53 am-6:14 pm

1 stop7h 21m

$518

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/16

Compare providers for flights from Chicago to Sioux City

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Chicago to Sioux City in October.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
ExpediaPrice Accuracy2 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Chicago-Sioux City flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Chicago-Sioux City flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Chicago-Sioux City flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Chicago-Sioux City flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Chicago-Sioux City flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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, September is the cheapest month in which you can book a flight from Chicago to Sioux City (average of $122). Flying from Chicago to Sioux City in April is currently the most expensive (average of $223). 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 October 16, 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 October 16, 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 October 16, 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
8,982 reviews

Boarding

7.7

Entertainment

7.1

Crew

8.1

Food

6.6

Comfort

7.3

Overall

7.4

Reviews

1 / 20
4.0
Okay

Tim,Sep 2025

IAD - GSP

This was pretty bad. It’s chaos at the Dulles boarding gates for the small regional jets because they use one gate to board 3-4 flights at a time. So, it’s difficult knowing where and when to go. There is little space for any size of carrry-on, so most had to gate check their bags. However, the worst of it was that our single flight attendant fell asleep before we took off and the pilot couldn’t do so until she responded to his messages. My wife had to wake her up! So we were a little late leaving. Not to be thwarted, the flight attendant fell asleep right after take off and there was no sight of her during the flight. When the aircraft touched down, a tray of unsecured canned drinks came crashing onto the aisle up front. I can only assume someone didn’t do what they were supposed to. The pilot was great, but I’m sure he must not be happy with this crew member.
United Airlines
7.4
Good
8,982 reviews
United Airlines
7.4
Good
8,982 reviews

Boarding

7.7

Entertainment

7.1

Crew

8.1

Food

6.6

Comfort

7.3

Overall

7.4

Reviews

1 / 20
4.0
Okay

Tim,Sep 2025

IAD - GSP

This was pretty bad. It’s chaos at the Dulles boarding gates for the small regional jets because they use one gate to board 3-4 flights at a time. So, it’s difficult knowing where and when to go. There is little space for any size of carrry-on, so most had to gate check their bags. However, the worst of it was that our single flight attendant fell asleep before we took off and the pilot couldn’t do so until she responded to his messages. My wife had to wake her up! So we were a little late leaving. Not to be thwarted, the flight attendant fell asleep right after take off and there was no sight of her during the flight. When the aircraft touched down, a tray of unsecured canned drinks came crashing onto the aisle up front. I can only assume someone didn’t do what they were supposed to. The pilot was great, but I’m sure he must not be happy with this crew member.

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 49m. 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 $204. United Airlines is 49% 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 $265 for a flight from Chicago to Sioux City. The cheapest flight overall is $204 while the most popular route, (Chicago O'Hare Intl - Sioux City Sioux Gateway) is currently priced at $245.

  • 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, September is the cheapest month in which you can book a flight from Chicago to Sioux City (average of $122). Flying from Chicago to Sioux City in April is currently the most expensive (average of $223). 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

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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 October 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$204Average$416FlexibilityNo cancel feeOn-time69%

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