Cheap flights from Sioux City (SUX) to Illinois (IL)

Know your dates, get live prices in seconds:

From
To
Depart
Return
Any month
Compare vs. Cheapflights |
From
To
Depart
Depart
Time
Anytime
From
To
Depart
Depart
Time
Anytime
From
To
Depart
Depart
Time
Anytime
From
To
Depart
Depart
Time
Anytime
From
To
Depart
Depart
Time
Anytime
From
To
Depart
Depart
Time
Anytime

We work with more than 300 partners to bring you better travel deals

How to find the cheapest flight from
Sioux City (SUX) to Illinois

All the information you need to plan the best SUX to ORD flight in 2021: compare Sioux City to Illinois flight prices with the expected peak season, weather and rainfall in Illinois.
When is the cheapest time to fly from Sioux City to Illinois (SUX - IL)?

When flying from Sioux City to Illinois, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

What is the cheapest month to fly from Sioux City to Illinois?

The best pricing can be found in the month of December. Prices to Illinois from Sioux City average $329. You can even find prices in December for less than $329, as users have found deals to Illinois from as low as $250. The month of July appears to be one of the more expensive times to travel to Illinois from Sioux City. Flying in the targeted month can save you up to 41%.

How far in advance should I book a flight from Sioux City to Illinois?

When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 40 days in advance, which can save you up to 120% on flights from Sioux City to Illinois compared to booking the week you need them. Waiting 40 days out may not be for everyone, so we have options available for flights within the next two weeks, with the lowest price starting at $465. For sooner than that we have options available in the next 3 days from $713.

Cheap flights from Sioux City to Illinois in November, December 2021

The best prices found for SUX to Illinois flights for November, December
17 Dec - 8 Jan
$253pp
SUX
Sioux City Sioux Gateway
United Airlines
Non-Stop
ORD
Chicago O'Hare Intl
ORD
Chicago O'Hare Intl
United Airlines
Non-Stop
SUX
Sioux City Sioux Gateway
3 Dec - 5 Dec
$312pp
SUX
Sioux City Sioux Gateway
United Airlines
Non-Stop
ORD
Chicago O'Hare Intl
ORD
Chicago O'Hare Intl
United Airlines
Non-Stop
SUX
Sioux City Sioux Gateway
28 Dec - 31 Dec
$374pp
SUX
Sioux City Sioux Gateway
United Airlines
Non-Stop
ORD
Chicago O'Hare Intl
ORD
Chicago O'Hare Intl
United Airlines
Non-Stop
SUX
Sioux City Sioux Gateway

Sioux City Sioux Gateway to Illinois 2022 flight deals

Cheap flights to Illinois from Sioux City found for next year
17 Dec - 8 Jan
$253pp
SUX
Sioux City Sioux Gateway
United Airlines
Non-Stop
ORD
Chicago O'Hare Intl
ORD
Chicago O'Hare Intl
United Airlines
Non-Stop
SUX
Sioux City Sioux Gateway
3 Dec - 5 Dec
$312pp
SUX
Sioux City Sioux Gateway
United Airlines
Non-Stop
ORD
Chicago O'Hare Intl
ORD
Chicago O'Hare Intl
United Airlines
Non-Stop
SUX
Sioux City Sioux Gateway
28 Dec - 31 Dec
$374pp
SUX
Sioux City Sioux Gateway
United Airlines
Non-Stop
ORD
Chicago O'Hare Intl
ORD
Chicago O'Hare Intl
United Airlines
Non-Stop
SUX
Sioux City Sioux Gateway

Non-stop flights to Illinois from Sioux City

Save time with Sioux City to Illinois direct flight deals
7 Feb - 10 Feb
$194pp
SUX
Sioux City Sioux Gateway
United Airlines
Non-Stop
ORD
Chicago O'Hare Intl
ORD
Chicago O'Hare Intl
United Airlines
Non-Stop
SUX
Sioux City Sioux Gateway
4 Feb - 7 Feb
$205pp
SUX
Sioux City Sioux Gateway
United Airlines
Non-Stop
ORD
Chicago O'Hare Intl
ORD
Chicago O'Hare Intl
United Airlines
Non-Stop
SUX
Sioux City Sioux Gateway
17 Dec - 8 Jan
$253pp
SUX
Sioux City Sioux Gateway
United Airlines
Non-Stop
ORD
Chicago O'Hare Intl
ORD
Chicago O'Hare Intl
United Airlines
Non-Stop
SUX
Sioux City Sioux Gateway

One-way flights to Illinois from Sioux City

The cheapest one-way flights from Sioux City to Illinois
3:00 am - 4:47 am
United Airlines
Nonstop
1h 47m
SUX - ORD
United Airlines
$100
United
3:00 am - 4:47 am
United Airlines
Nonstop
1h 47m
SUX - ORD
United Airlines
$159
United
3:00 am - 4:47 am
United Airlines
Nonstop
1h 47m
SUX - ORD
United Airlines
$190
United

Related info for your journey

Useful info, stats and facts about <span class="emphasized">Sioux City</span> to <span class="emphasized">Illinois</span> flights.

Flight FAQs

From Sioux City to Illinois

What airport do you fly from for flights from Sioux City to Illinois?

Most people fly from Sioux City Sioux Gateway (SUX) if they book a flight from Sioux City to Illinois. Sioux City Sioux Gateway is conveniently located just 7.0 mi from Sioux City’s city center.

Which airlines flying from Sioux City Sioux Gateway to Illinois have flexible changes due to COVID-19?

Some of our airline partners flying from Sioux City Sioux Gateway to Illinois have new flexible policies in place due to COVID-19. American Airlines is one of the carriers where you may find flexible change policies. You can use our site to filter for airlines like American Airlines with this kind of flexibility.

Can I find flights from Sioux City to Illinois for under $200 on Cheapflights?

Yes, there are multiple flights from Sioux City to Illinois for under $200. The cheapest flight booked recently is on United Airlines for just $194, but on average you can expect to pay $337.

Are there nonstop flights from Sioux City to Illinois for under $200 on Cheapflights?

Cheapflights has at least 4 direct flights from Sioux City to Illinois under $200. A good price for a nonstop flight from Sioux City to Illinois is less than $256.

What are the cheapest flights from Sioux City to Illinois?

On average you can expect to pay $499 for a flight from Sioux City to Illinois. The cheapest flight overall is $464 while the most popular route, (Sioux City Sioux Gateway - Chicago O'Hare Intl) is currently priced at $194.

COVID Restrictions

View COVID Travel Restrictions for Illinois (IL)

Do I need a COVID test to fly to Illinois from Sioux City?

Information is based on travel restrictions for travel to Illinois within the United States

Most visitors from Sioux City Sioux Gateway need to provide a negative COVID-19 test result and/or quarantine to enter Illinois.

COVID-19 testing requirements
Visitors from Sioux City Sioux Gateway must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 72 hours before departing to Illinois.

Quarantine requirements
Visitors from Sioux City Sioux Gateway are not required to quarantine after entering Illinois.

Do I need a test to fly back to Sioux City from Illinois?

Returning to Sioux City Sioux Gateway from Illinois

COVID-19 testing requirements
Visitors from Illinois must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 72 hours before departing to Sioux City Sioux Gateway.

Quarantine requirements
Visitors from Illinois are not required to quarantine after entering Sioux City Sioux Gateway.

Hide COVID Travel Restrictions for Illinois (IL)

Destination points for flights from Sioux City to Illinois

Select to see more specific information for flights from Sioux City to all places in Illinois.

Destination information for Illinois

Things to know before you go - useful duration and weather info for your trip from Sioux City to Illinois.
Flight duration from SUX to Illinois
1h 49m

Airports servicing Sioux City

Airports servicing

Bloomington (BMI)
Champaign (CMI)
Decatur (DEC)
Moline (MLI)
Marion (MWA)
Home North America USA Illinois Cheap flights from Sioux City to Illinois