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Illinois

$59+ Cheap flights from Wisconsin to Illinois

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 2/21. Fares are subject to change and may not be available on all flights or dates of travel.
MKE — ORD
Feb 25 — Mar 41
Wed 2/25
Wed 3/4
1 adult, Economy
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Cheap flight deals from Wisconsin to Illinois

Cheapest flights from Wisconsin to Illinois
Explore the most affordable flight options available from Wisconsin to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 26, 2026.

This Sun Country Air deal was found by Cheapflights users on 1/25. 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 Sun Country Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/147:18 pm
MSP
-
ORD
Nonstop1h 32m
Sun Country Air
Sun 3/227:30 am
ORD
-
MSP
Nonstop1h 43m
Sun Country Air
Deal found 1/25$118
This Sun Country Air deal was found by Cheapflights users on 1/24. 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 Sun Country Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/2010:54 am
MSP
-
ORD
Nonstop1h 33m
Sun Country Air
Sun 2/227:05 am
ORD
-
MSP
Nonstop1h 43m
Sun Country Air
Deal found 1/24$119
This Cheapflightsfares deal was found by Cheapflights users on 1/23. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/104:24 pm
MSP
-
ORD
Nonstop1h 39m
Sun Country Air
Sun 4/129:13 pm
ORD
-
MSP
Nonstop1h 44m
Sun Country Air
Deal found 1/23$128
This Expedia deal was found by Cheapflights users on 1/25. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/211:30 pm
MSP
-
STL
Nonstop1h 31m
Multiple Airlines
Sat 2/282:51 pm
STL
-
MSP
1 stop18h 14m
Multiple Airlines
Deal found 1/25$134
This Cheapflightsfares deal was found by Cheapflights users on 1/24. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/285:35 pm
MSP
-
ORD
Nonstop1h 49m
Sun Country Air
Wed 7/16:24 pm
ORD
-
MSP
Nonstop1h 46m
Sun Country Air
Deal found 1/24$138
This Orbitz deal was found by Cheapflights users on 1/25. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/273:40 pm
MSP
-
ORD
1 stop9h 12m
Multiple Airlines
Thu 5/148:06 pm
ORD
-
MSP
Nonstop1h 42m
Multiple Airlines
Deal found 1/25$144
This Frontier deal was found by Cheapflights users on 1/26. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/233:50 pm
ORD
-
STL
1 stop8h 09m
Frontier
Mon 3/23:49 pm
STL
-
ORD
1 stop7h 26m
Frontier
Deal found 1/26$148
This Cheapflightsfares deal was found by Cheapflights users on 1/24. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/174:48 pm
MSP
-
ORD
Nonstop1h 39m
Sun Country Air
Sun 4/197:00 pm
ORD
-
MSP
Nonstop1h 44m
Sun Country Air
Deal found 1/24$148
This Expedia deal was found by Cheapflights users on 1/25. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/217:15 am
MSP
-
STL
1 stop6h 41m
Frontier
Sat 2/282:51 pm
STL
-
MSP
1 stop18h 14m
Frontier
Deal found 1/25$150
This Frontier deal was found by Cheapflights users on 1/24. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/288:15 am
ORD
-
STL
1 stop15h 44m
Frontier
Mon 3/23:49 pm
STL
-
ORD
1 stop7h 26m
Frontier
Deal found 1/24$150
This Kiwi.com deal was found by Cheapflights users on 1/26. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/195:05 am
ORD
-
STL
1 stop25h 46m
Frontier
Mon 2/238:22 pm
STL
-
ORD
1 stop14h 29m
Frontier
Deal found 1/26$151
This Kiwi.com deal was found by Cheapflights users on 1/24. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/2410:40 am
MSP
-
STL
1 stop29h 13m
Frontier
Sat 2/282:51 pm
STL
-
MSP
1 stop18h 14m
Frontier
Deal found 1/24$154

Find flight deals from Wisconsin to Illinois

Keep the following information in mind while searching for Wisconsin to Illinois flight deals. Data was last updated January 26, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$118
(Sun Country Air)

One-way from

$59
(Sun Country Air)

Popular in

January

Cheapest in

June

Average price

$361

Good round-trip deal

$251 or less

Good one-way deal

$184 or less
Provider with most accurate pricing for Milwaukee-Mitchell-Chicago (CHI) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Milwaukee-Mitchell-Chicago (CHI) flights.
Search Deals
From Wisconsin to Illinois
Search Deals
One-way flight from Wisconsin to Illinois
Search Deals
Highest demand for flights based on searches. 9% potential increase in price ($27 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($11 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals
Price to beat on a round-trip flight from Wisconsin to Illinois.
Search Deals
Price to beat on a one-way flight from Wisconsin to Illinois.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Wisconsin to Illinois 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 January 26, 2026.
Use the filters below to find and compare flights from Wisconsin to Illinois that are best for you.

Fly from

Wisconsin

Fly to

Illinois

Route

Depart

Return

Price

MinneapolisChicago

MSP - ORD

MSPORD

Minneapolis St Paul

Fri 2/20

10:54 am-12:27 pm

Nonstop1h 33m

Chicago O'Hare Intl

Sun 2/22

7:05 am-8:48 am

Nonstop1h 43m

$119

MinneapolisChicago

MSP - ORD

MSPORD

Minneapolis St Paul

Fri 4/24

5:00 pm-6:39 pm

Nonstop1h 39m

Chicago O'Hare Intl

Mon 4/27

10:16 am-12:00 pm

Nonstop1h 44m

$158

MinneapolisChicago

MSP - MDW

MSPMDW

Minneapolis St Paul

Wed 3/11

6:00 pm-7:30 pm

Nonstop1h 30m

Chicago Midway

Wed 3/18

7:55 am-9:30 am

Nonstop1h 35m

$171

MinneapolisChicago

MSP - MDW

MSPMDW

Minneapolis St Paul

Thu 2/26

4:59 pm-6:40 pm

Nonstop1h 41m

Chicago Midway

Mon 3/2

7:20 pm-9:00 pm

Nonstop1h 40m

$171

ChicagoSt. Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

Tue 2/17

10:34 pm-11:48 pm

Nonstop1h 14m

Lambert-St Louis

Thu 2/19

6:00 am-7:28 am

Nonstop1h 28m

$171

ChicagoSt. Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

Mon 2/23

7:40 pm-9:05 pm

Nonstop1h 25m

Lambert-St Louis

Mon 3/2

6:55 pm-8:28 pm

Nonstop1h 33m

$171

MinneapolisChicago

MSP - MDW

MSPMDW

Minneapolis St Paul

Tue 3/24

7:00 am-8:50 am

Nonstop1h 50m

Chicago Midway

Wed 3/25

9:30 am-11:07 am

Nonstop1h 37m

$171

ChicagoSt. Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

Sat 2/21

4:20 pm-5:44 pm

Nonstop1h 24m

Lambert-St Louis

Sat 2/28

7:41 am-9:10 am

Nonstop1h 29m

$171

MinneapolisChicago

MSP - MDW

MSPMDW

Minneapolis St Paul

Thu 4/16

7:00 am-8:46 am

Nonstop1h 46m

Chicago Midway

Sat 4/18

7:18 pm-9:00 pm

Nonstop1h 42m

$171

MinneapolisChicago

MSP - ORD

MSPORD

Minneapolis St Paul

Wed 2/18

6:00 am-7:41 am

Nonstop1h 41m

Chicago O'Hare Intl

Wed 2/18

6:01 pm-7:33 pm

Nonstop1h 32m

$171

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/24

Showing 1-10 of 60 results
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Best time to book a flight from Wisconsin to Illinois

Have a flexible travel schedule? Discover the best time to fly to Illinois from Wisconsin 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 Wisconsin to Illinois

What is the cheapest month to book a flight from Wisconsin to Illinois?

Currently, January is the cheapest month in which you can book a flight from Wisconsin to Illinois (average of $179). Flying from Wisconsin to Illinois in March is currently the most expensive (average of $184). 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 WI to IL?

Find hourly flight availability from Wisconsin to Illinois. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated January 26, 2026.

One of the essential ways to save on airfare from Wisconsin to Illinois is to remain as flexible as possible. Flights that are in the evening tend to be the most expensive. A flight in the morning could potentially save you up to 21% on airfare.

What is the cheapest day to fly from Wisconsin to Illinois?

Use this chart to determine the cheapest time to fly round-trip from Wisconsin to Illinois. Price data was last updated on January 24, 2026.

Travelers seeking maximum savings on their Wisconsin to Illinois flight should consider departing on Saturday afternoons when fares are most often at their lowest. Saturday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Wisconsin to Illinois

Explore weekly flight availability from Wisconsin to Illinois. 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 January 26, 2026.

The most flights from USWI to USIL are scheduled on a Sunday (45 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (41 on average).

How much does it cost to fly round-trip from Wisconsin to Illinois?

Reviews of airlines servicing Illinois

Get insights into the airlines that provide service to Illinois. 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 Illinois. Reviews last updated January 26, 2026.
See what other customers who have flown with United Airlines and American Airlines from Wisconsin to Illinois have to say. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,199 reviews

Crew

8.1

Boarding

7.7

Overall

7.4

Comfort

7.3

Food

6.6

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
United Airlines
7.4
Good
9,199 reviews
United Airlines
7.4
Good
9,199 reviews

Crew

8.1

Boarding

7.7

Overall

7.4

Comfort

7.3

Food

6.6

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
American Airlines
7.2
Good
11,189 reviews
United Airlines
7.4
Good
9,199 reviews

Crew

8.1

Boarding

7.7

Overall

7.4

Comfort

7.3

Food

6.6

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family

Related info for your journey

Find useful and relevant information for your journey from Wisconsin to Illinois. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Wisconsin to Illinois?

    Airlines like Sun Country Air, Southwest, and Delta fly from Wisconsin to Illinois in about 1h 30m. The time it takes to get you to your destination is usually consistent. There are 348 mi between Wisconsin and Illinois. Most flights are nonstop.

  • Can I find deals for flights from Wisconsin to Illinois that include hotel bookings?

    Yes. In addition to deals on Wisconsin to Illinois flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Wisconsin to Illinois?

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

  • Can I find deals for business class flights from Wisconsin to Illinois?

    Yes. Cheapflights offers flight deals from Wisconsin to Illinois 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 Wisconsin to Illinois?

    Currently, January is the cheapest month in which you can book a flight from Wisconsin to Illinois (average of $179). Flying from Wisconsin to Illinois in March is currently the most expensive (average of $184). 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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Alternative routes for Wisconsin to Illinois

See prices for flight routes from nearby airports that may be better suited for you.
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Top 2 airlines flying from Wisconsin to Illinois

Discover the top 2 airlines that operate flights from Wisconsin to Illinois. 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 January 26, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$179Average$295FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$179Average$250FlexibilityNo cancel feeOn-time69%

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