$166 Cheap Flights from Sioux City (SUX) to Chicago (ORD)

View $166 flight on Sun, Sep 21, 2025Opens in a new window

Popular airlines from Sioux City, IA (SUX-Sioux Gateway) to Chicago O'Hare Intl. Airport (ORD)

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Cheap Flights from Sioux City to Chicago (SUX-ORD)

Prices were available within the past 7 days and start at $166 for one-way flights and $204 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Fri, Aug 29 - Mon, Sep 1
SUX
Sioux City
ORD
Chicago
$204 Roundtrip, just found
$204
Roundtrip
just found
Select United flight, departing Fri, Aug 29 from Sioux City to Chicago, returning Mon, Sep 1, priced at $204 just found
United
Wed, Oct 8 - Sun, Oct 12
SUX
Sioux City
ORD
Chicago
$213 Roundtrip, found 3 days ago
$213
Roundtrip
found 3 days ago
Select United flight, departing Wed, Oct 8 from Sioux City to Chicago, returning Sun, Oct 12, priced at $213 found 3 days ago
United
Fri, Aug 29 - Mon, Sep 1
SUX
Sioux City
ORD
Chicago
$244 Roundtrip, just found
$244
Roundtrip
just found
Select United flight, departing Fri, Aug 29 from Sioux City to Chicago, returning Mon, Sep 1, priced at $244 just found
United
Wed, Oct 8 - Sun, Oct 12
SUX
Sioux City
ORD
Chicago
$253 Roundtrip, found 3 days ago
$253
Roundtrip
found 3 days ago
Select United flight, departing Wed, Oct 8 from Sioux City to Chicago, returning Sun, Oct 12, priced at $253 found 3 days ago
United
Thu, Sep 25 - Sun, Sep 28
SUX
Sioux City
ORD
Chicago
$265 Roundtrip, just found
$265
Roundtrip
just found
Select United flight, departing Thu, Sep 25 from Sioux City to Chicago, returning Sun, Sep 28, priced at $265 just found
United
Mon, Aug 18 - Sun, Aug 24
SUX
Sioux City
ORD
Chicago
$278 Roundtrip, found 1 day ago
$278
Roundtrip
found 1 day ago
Select United flight, departing Mon, Aug 18 from Sioux City to Chicago, returning Sun, Aug 24, priced at $278 found 1 day ago
United
Fri, Aug 8 - Sat, Aug 23
SUX
Sioux City
ORD
Chicago
$279 Roundtrip, found 1 day ago
$279
Roundtrip
found 1 day ago
Select United flight, departing Fri, Aug 8 from Sioux City to Chicago, returning Sat, Aug 23, priced at $279 found 1 day ago
United
Mon, Sep 29 - Tue, Oct 14
SUX
Sioux City
ORD
Chicago
$322 Roundtrip, found 5 days ago
$322
Roundtrip
found 5 days ago
Select United flight, departing Mon, Sep 29 from Sioux City to Chicago, returning Tue, Oct 14, priced at $322 found 5 days ago
United
Thu, Sep 25 - Fri, Sep 26
SUX
Sioux City
ORD
Chicago
$326 Roundtrip, just found
$326
Roundtrip
just found
Select United flight, departing Thu, Sep 25 from Sioux City to Chicago, returning Fri, Sep 26, priced at $326 just found
United
Mon, Aug 18 - Sun, Aug 24
SUX
Sioux City
ORD
Chicago
$332 Roundtrip, found 1 day ago
$332
Roundtrip
found 1 day ago
Select United flight, departing Mon, Aug 18 from Sioux City to Chicago, returning Sun, Aug 24, priced at $332 found 1 day ago

Find the cheapest month to fly from Sioux City (SUX) to Chicago (ORD)

February is typically the cheapest month to fly

From $194 - $524 per traveler.

Graph displaying average flight prices per month

Alternative airports near Chicago

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to O'Hare Intl. ORD. Cheapest option available. Average driving time to city center is 23 minutes. Flights from $355
ORD
O'Hare Intl.
Cheapest
Average driving time to city center23 min
Flights from $355
Flights from Sioux City (SUX) to Chicago (ORD)
Origin airport
Sioux Gateway
Destination airport
O'Hare Intl.
Airlines serving
United
Roundtrip price
$204
Distance
434 mi
Average flight time
1 hour 44 mins

Sioux City to Chicago Flights

The cheapest times to fly from Sioux City to Chicago

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Sioux City to Chicago are during the month of August. You can find some of the cheapest flights from Sioux City to Chicago with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Sioux City to Chicago

Sunday is one of the best days to book for cheap flights from Sioux City to Chicago: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Sioux City to Chicago

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Sioux City to Chicago in 2025. You can also book with separate airlines for your outbound and return journeys, from $166 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Sioux City to Chicago flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Sioux City to Chicago airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Sioux Gateway Airport (SUX) to O'Hare Intl. Airport (ORD) cost?
You can pick up cheap return tickets starting at $204 from Sioux Gateway Airport (SUX) to O'Hare Intl. Airport (ORD). This information is based on the cheapest price found on Expedia for this return journey departing within the next three months. This airfare is for a United flight leaving SUX on August 16 2025 and touching down at ORD. The price was last updated on July 23 2025 and has not changed since.
What is the cheapest month to fly from SUX to ORD?
The cheapest flights from SUX to ORD are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
Which airlines fly direct from Sioux Gateway Airport (SUX) to O'Hare Intl. Airport (ORD)?
Jump on a direct flight with United Airlines and fly straight from Sioux Gateway Airport (SUX) to O'Hare Intl. Airport (ORD).
What is the cheapest airline that flies from SUX to ORD?
With prices starting from $166 for a one-way flight from SUX to ORD, United is currently the cheapest airline on this route. This fare is based on the lowest price found on Expedia departing within the next three months. The flight takes off from SUX on September 21 2025. Prices were last updated on July 23 2025 and have not changed since.
How many flights per day from Sioux Gateway Airport (SUX) to O'Hare Intl. Airport (ORD)?
On average, Sioux Gateway Airport (SUX) only offers 1 direct flight to O'Hare Intl. Airport (ORD) each day. For more options, try our easy-to-use filter tool. Simply enter your dates, then click on "1 Stop" or "2+ Stops" to discover flights with layovers.
What are the most popular departure times for flights from Sioux Gateway Airport (SUX) to O'Hare Intl. Airport (ORD)?
Flights between SUX and ORD are busiest at 10 AM. If you'd like a more relaxed trip and potentially cheaper tickets, choose a departure that's outside typical rush times.
What day of the week has the most flights from SUX to ORD?
Jet off on a Saturday if you're searching for the best selection of flights from Sioux Gateway Airport (SUX) to O'Hare Intl. Airport (ORD).
What is the earliest flight from Sioux Gateway Airport (SUX) to O'Hare Intl. Airport (ORD)?
The first flight of the day leaving Sioux Gateway Airport (SUX) is at around 10:00AM UTC-6. Board this plane and you'll land at O'Hare Intl. Airport (ORD) at approximately 11:49AM UTC-6. The total time in the air is 1h 49m.
How long does it take to fly from Sioux Gateway Airport (SUX) to O'Hare Intl. Airport (ORD)?
The average flight duration from SUX to ORD is 1 hour and 49 minutes, covering a distance of 440 mi.
What airline has the least delays from SUX to ORD?
American Airlines has the best track record for on-time direct flights from Sioux Gateway Airport (SUX) to O'Hare Intl. Airport (ORD), with an on-time score of 84%. Use the Expedia App to check your flight status before you take off and receive notifications about any trip changes.
What is the best time to fly from Sioux Gateway Airport (SUX) to O'Hare Intl. Airport (ORD)?
Opt for a flight from Sioux Gateway Airport (SUX) to O'Hare Intl. Airport (ORD) that leaves before 3 PM to reduce the risk of cancellations and delays. Departures later than this are on average 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports do you fly into for Chicago from Sioux Gateway Airport (SUX)?
O'Hare Intl. Airport (ORD) is the only airport in Chicago with direct flights from Sioux Gateway Airport (SUX). Explore the available options and find affordable fares on Expedia.
Is it cheaper to buy a plane ticket from Sioux Gateway Airport (SUX) to O'Hare Intl. Airport (ORD) last-minute?
Last-minute fares from SUX to ORD are usually more expensive. To lock in the lowest prices, start searching for flights ahead of time. That said, if you can play around with your travel dates, it's possible to land a cheap fare right before you leave.
Is it cheaper to book a SUX to ORD flight and hotel package?
Booking a SUX to ORD flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your trip all in one place. Select from our wide range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Sioux Gateway Airport (SUX) to O'Hare Intl. Airport (ORD)?
Typically, you're able to reschedule or cancel your SUX to ORD flight. However, there may be additional charges, especially if you booked over 24 hours ago. Check your itinerary for the airline's policies and fees on flight changes, or if you'd like more details, visit our Customer Service portal.

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