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$166+ Cheap flights from Sioux City (SUX) to Chicago (CHI)

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 3/31. Fares are subject to change and may not be available on all flights or dates of travel.
SUX — CHI
Dec 29 — Jan 51
Mon 12/29
Mon 1/5
1 adult, Economy
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1. Tell us where you want to go

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Cheap flight deals from Sioux City to Chicago

Discover tips and strategies to find the most affordable flight options for your journey from Sioux City (SUX) to Chicago (CHI). 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 November 29, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$265
(United Airlines)

One-way from

$166
(United Airlines)

Popular in

May

Cheapest in

June

Average price

$279

Good round-trip deal

$373 or less

Good one-way deal

$104 or less
Provider with most accurate pricing for Sioux City Sioux Gateway-Chicago (CHI) flight deals.
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Provider most trusted by Cheapflights users for Sioux City Sioux Gateway-Chicago (CHI) flights.
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From Sioux City Sioux Gateway to Chicago (CHI)
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One-way flight from Sioux City Sioux Gateway to Chicago (CHI)
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Highest demand for flights based on searches. 3% potential increase in price ($12 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($12 potential savings vs. average RT price).
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Average for round-trip flights in November 2025
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Price to beat on a round-trip flight from Sioux City Sioux Gateway to Chicago (CHI).
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Price to beat on a one-way flight from Sioux City Sioux Gateway to Chicago (CHI).
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Find flight deals from Sioux City to Chicago

Cheapest flights from Sioux City to Chicago
Explore the most affordable flight options available from Sioux City to Chicago. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 29, 2025.

This United Airlines deal was found by Cheapflights users on 11/27. 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 12/127:50 amSUX - ORD
Nonstop1h 47mUnited Airlines
Tue 12/169:10 pmORD - SUX
Nonstop1h 49mUnited Airlines
Deal found 11/27$416
This United Airlines deal was found by Cheapflights users on 11/28. 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 12/137:50 amSUX - ORD
Nonstop1h 47mUnited Airlines
Wed 12/179:10 pmORD - SUX
Nonstop1h 49mUnited Airlines
Deal found 11/28$458

Cheapflights Fare Finder

 
Customize your flight search to find flights from Sioux City to Chicago 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 November 29, 2025.
Use the filters below to find and compare flights from Sioux City to Chicago that are best for you.

Fly from

Sioux City

Fly to

Chicago

Route

Depart

Return

Price

Sioux CityChicago

SUX - ORD

SUXORD

Sioux City Sioux Gateway

Fri 3/6

12:53 pm-2:40 pm

Nonstop1h 47m

Chicago O'Hare Intl

Thu 3/12

3:50 pm-5:41 pm

Nonstop1h 51m

$265

Sioux CityChicago

SUX - ORD

SUXORD

Sioux City Sioux Gateway

Sat 4/18

12:45 pm-2:40 pm

Nonstop1h 55m

Chicago O'Hare Intl

Wed 4/22

3:35 pm-5:32 pm

Nonstop1h 57m

$265

Sioux CityChicago

SUX - ORD

SUXORD

Sioux City Sioux Gateway

Thu 3/12

12:53 pm-2:40 pm

Nonstop1h 47m

Chicago O'Hare Intl

Sun 3/15

3:50 pm-5:41 pm

Nonstop1h 51m

$416

Sioux CityChicago

SUX - ORD

SUXORD

Sioux City Sioux Gateway

Tue 3/31

12:45 pm-2:40 pm

Nonstop1h 55m

$166

Sioux CityChicago

SUX - ORD

SUXORD

Sioux City Sioux Gateway

Sat 12/20

7:50 am-9:45 am

Nonstop1h 55m

$256

Sioux CityChicago

SUX - ORD

SUXORD

Sioux City Sioux Gateway

Wed 4/1

12:45 pm-2:40 pm

Nonstop1h 55m

$256

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/29

Compare providers for flights from Sioux City to Chicago

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 Sioux City to Chicago in November.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
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 Sioux City-Chicago flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Sioux City-Chicago flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Sioux City-Chicago flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Sioux City-Chicago flights, Cheapflights users trust eDreams the most. eDreams 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 Sioux City-Chicago 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 Sioux City to Chicago

Have a flexible travel schedule? Discover the best time to fly to Chicago from Sioux City 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 Sioux City to Chicago

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

Currently, September is the cheapest month in which you can book a flight from Sioux City to Chicago (average of $102). Flying from Sioux City to Chicago in June is currently the most expensive (average of $224). 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 SUX to CHI?

Find hourly flight availability from Sioux City to Chicago. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated November 29, 2025.

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

Reviews of airlines servicing Chicago

Get insights into the airlines that provide service to Chicago. 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 Chicago. Reviews last updated November 29, 2025.
Get a feel of what it's like to fly with United Airlines from Sioux City to Chicago by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,056 reviews

Entertainment

7.1

Crew

8.1

Food

6.6

Boarding

7.7

Overall

7.4

Comfort

7.3

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000
United Airlines
7.4
Good
9,056 reviews
United Airlines
7.4
Good
9,056 reviews

Entertainment

7.1

Crew

8.1

Food

6.6

Boarding

7.7

Overall

7.4

Comfort

7.3

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000

Related info for your journey

Find useful and relevant information for your journey from Sioux City to Chicago. 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 from for flights from Sioux City to Chicago?

    Located just 7.0 mi from the city center, Sioux City Sioux Gateway is the airport most travelers will use when flying to Chicago from Sioux City. Booking flights from Sioux Gateway (SUX) to Chicago should be relatively easy as there are 0 daily outbound flights to Chicago from 1 airline.

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

    For as low as $265, United Airlines can have you in Chicago from Sioux City in 1h 47m. The distance between Sioux City and Chicago is about 435 mi. All flights are typically nonstop.

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

    Our cheapest airline available from Sioux City to Chicago is United Airlines. Our recent data shows that you can find tickets from as low as $260 on this airline. United Airlines is priced at 22% lower than the current average price of a flight leaving 3 months from now.

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

    Looking at all options, your cheapest flight can be booked for $233. While the most popular route (Sioux City Sioux Gateway - Chicago O'Hare Intl) can be booked for $265 on average, our data indicates $372 when flying from Sioux City to Chicago.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Sioux City to Chicago 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 Sioux City to Chicago?

    Currently, September is the cheapest month in which you can book a flight from Sioux City to Chicago (average of $102). Flying from Sioux City to Chicago in June is currently the most expensive (average of $224). 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 Chicago?

Book flights to Chicago if you plan to visit one of these locations
Lansing
Hammond
Porter
Benton Harbor
Merrillville

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Top airline flying from Sioux City to Chicago

Discover the top airline that operate flights from Sioux City to Chicago. 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 November 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$260Average$299FlexibilityNo cancel feeOn-time69%

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