HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Illinois

$49+ 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 2/24. Fares are subject to change and may not be available on all flights or dates of travel.
MKE — ORD
Feb 28 — Mar 71
Sat 2/28
Sat 3/7
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Wisconsin to Illinois with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 29, 2026.

This Southwest deal was found by Cheapflights users on 1/28. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/247:45 am
MSP
-
STL
Nonstop1h 50m
Southwest
Tue 3/38:20 pm
STL
-
MSP
Nonstop1h 30m
Southwest
Deal found 1/28$97
This United Airlines deal was found by Cheapflights users on 1/27. 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.
Wed 2/257:40 pm
ORD
-
STL
Nonstop1h 25m
United Airlines
Wed 3/47:41 am
STL
-
ORD
Nonstop1h 29m
United Airlines
Deal found 1/27$97
This Southwest deal was found by Cheapflights users on 1/28. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/75:20 am
MSP
-
STL
2 stops7h 30m
Southwest
Wed 4/158:25 am
STL
-
MSP
Nonstop1h 35m
Southwest
Deal found 1/28$112
This Southwest deal was found by Cheapflights users on 1/27. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/114:20 pm
MSP
-
MDW
1 stop6h 30m
Southwest
Wed 3/185:30 pm
MDW
-
MSP
1 stop6h 00m
Southwest
Deal found 1/27$117
This Southwest deal was found by Cheapflights users on 1/27. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/251:45 pm
ORD
-
STL
1 stop5h 00m
Southwest
Wed 3/48:15 am
STL
-
ORD
1 stop4h 00m
Southwest
Deal found 1/27$117
This Southwest deal was found by Cheapflights users on 1/27. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/256:50 am
MSP
-
ORD
1 stop5h 25m
Southwest
Wed 3/41:45 pm
ORD
-
MSP
1 stop6h 50m
Southwest
Deal found 1/27$117
This Cheapflightsfares deal was found by Cheapflights users on 1/27. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/234:42 pm
MSP
-
ORD
Nonstop1h 39m
Sun Country Air
Mon 4/2710:16 am
ORD
-
MSP
Nonstop1h 44m
Sun Country Air
Deal found 1/27$118
This Southwest deal was found by Cheapflights users on 1/29. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/108:45 am
MSP
-
MDW
2 stops7h 25m
Southwest
Tue 3/105:30 pm
MDW
-
MSP
1 stop6h 00m
Southwest
Deal found 1/29$122
This Southwest deal was found by Cheapflights users on 1/29. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/87:10 am
MSP
-
ORD
1 stop5h 40m
Southwest
Tue 4/142:40 pm
ORD
-
MSP
1 stop8h 25m
Southwest
Deal found 1/29$122
This Southwest deal was found by Cheapflights users on 1/28. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/256:05 am
MSP
-
MDW
2 stops7h 50m
Southwest
Wed 3/41:25 pm
MDW
-
MSP
2 stops7h 10m
Southwest
Deal found 1/28$127
This Cheapflightsfares deal was found by Cheapflights users on 1/28. 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 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 36m
Sun Country Air
Mon 4/207:05 pm
ORD
-
MSP
Nonstop1h 42m
Sun Country Air
Deal found 1/28$128
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.
Tue 2/176:02 pm
ORD
-
STL
1 stop12h 49m
Frontier
Fri 2/208:20 pm
STL
-
ORD
1 stop26h 19m
Frontier
Deal found 1/26$133

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 29, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$97
(Southwest)

One-way from

$49
(Southwest)

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 29, 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

MinneapolisSt. Louis

MSP - STL

MSPSTL

Minneapolis St Paul

Tue 4/7

4:30 pm-6:00 pm

Nonstop1h 30m

Lambert-St Louis

Wed 4/15

8:55 pm-10:30 pm

Nonstop1h 35m

$97

ChicagoSt. Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

Wed 2/25

8:10 pm-9:40 pm

Nonstop1h 30m

Lambert-St Louis

Wed 3/4

7:41 am-9:10 am

Nonstop1h 29m

$97

MinneapolisSt. Louis

MSP - STL

MSPSTL

Minneapolis St Paul

Wed 4/8

7:50 am-9:20 am

Nonstop1h 30m

Lambert-St Louis

Tue 4/14

8:25 am-10:00 am

Nonstop1h 35m

$97

MinneapolisSt. Louis

MSP - STL

MSPSTL

Minneapolis St Paul

Wed 4/8

4:30 pm-6:00 pm

Nonstop1h 30m

Lambert-St Louis

Wed 4/15

8:25 am-10:00 am

Nonstop1h 35m

$97

MinneapolisSt. Louis

MSP - STL

MSPSTL

Minneapolis St Paul

Tue 2/24

6:20 am-1:55 pm

1 stop7h 35m

Lambert-St Louis

Tue 3/3

8:20 pm-9:50 pm

Nonstop1h 30m

$107

ChicagoSt. Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

Tue 2/24

2:15 pm-8:35 pm

1 stop6h 20m

Lambert-St Louis

Tue 3/3

6:20 am-1:00 pm

1 stop6h 40m

$117

ChicagoSt. Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

Wed 2/25

2:15 pm-8:35 pm

1 stop6h 20m

Lambert-St Louis

Wed 3/4

8:15 am-12:15 pm

1 stop4h 00m

$117

MinneapolisSt. Louis

MSP - STL

MSPSTL

Minneapolis St Paul

Tue 4/7

5:20 am-12:50 pm

2 stops7h 30m

Lambert-St Louis

Tue 4/14

3:15 pm-10:35 pm

2 stops7h 20m

$127

MinneapolisChicago

MSP - MDW

MSPMDW

Minneapolis St Paul

Tue 3/24

5:07 pm-6:40 pm

Nonstop1h 33m

Chicago Midway

Mon 3/30

9:30 am-11:07 am

Nonstop1h 37m

$134

MinneapolisChicago

MSP - MDW

MSPMDW

Minneapolis St Paul

Mon 3/23

5:07 pm-6:40 pm

Nonstop1h 33m

Chicago Midway

Wed 4/1

7:20 pm-9:00 pm

Nonstop1h 40m

$134

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/27

Showing 1-10 of 60 results
1
2
3
...
6

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 29, 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 29, 2026.

The most flights from USWI to USIL are scheduled on a Tuesday (44 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (29 on average).

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 29, 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
9,215 reviews

Boarding

7.7

Overall

7.4

Food

6.6

Crew

8.1

Entertainment

7.1

Comfort

7.3

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
9,215 reviews
United Airlines
7.4
Good
9,215 reviews

Boarding

7.7

Overall

7.4

Food

6.6

Crew

8.1

Entertainment

7.1

Comfort

7.3

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
11,205 reviews
United Airlines
7.4
Good
9,215 reviews

Boarding

7.7

Overall

7.4

Food

6.6

Crew

8.1

Entertainment

7.1

Comfort

7.3

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 Southwest, United Airlines, 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 448 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Wisconsin to Illinois

See prices for flight routes from nearby airports that may be better suited for you.
John F Kennedy Intl to Fort Lauderdale flights
John F Kennedy Intl to Miami flights
Newark to Miami flights
Newark to Fort Lauderdale flights
LaGuardia to Miami flights
LaGuardia to Fort Lauderdale flights
San Francisco to John F Kennedy Intl flights
John F Kennedy Intl to West Palm Beach flights
Newark to West Palm Beach flights
John F Kennedy Intl to Los Angeles flights
John F Kennedy Intl to Orlando flights
John F Kennedy Intl to Las Vegas flights
Los Angeles to John F Kennedy Intl flights
San Francisco to Newark flights
O'Hare Intl to Sky Harbor Intl flights
Seattle to Los Angeles flights
Newark to Las Vegas flights
Seattle to Las Vegas flights
O'Hare Intl to Las Vegas flights
Newark to Orlando flights
John F Kennedy Intl to Tampa flights
Minneapolis to Sky Harbor Intl flights
Los Angeles to Seattle flights
O'Hare Intl to Dallas/Fort Worth flights
LaGuardia to Orlando flights
San Francisco to LaGuardia flights
Newark to Tampa flights
John F Kennedy Intl to San Francisco flights
LaGuardia to Tampa flights
Dallas/Fort Worth to John F Kennedy Intl flights
Boston to Fort Lauderdale flights
Newark to Los Angeles flights
San Francisco to Las Vegas flights
John F Kennedy Intl to Sky Harbor Intl flights
Dulles Intl to Miami flights
Boston to Miami flights
Reagan-National to Miami flights
Los Angeles to Honolulu flights
Dallas/Fort Worth to LaGuardia flights
Boston to Tampa flights
LaGuardia to West Palm Beach flights
Detroit to Orlando flights
Seattle to Sky Harbor Intl flights
Newark to Sky Harbor Intl flights
John F Kennedy Intl to Dallas/Fort Worth flights
John F Kennedy Intl to New Orleans flights
Dallas/Fort Worth to Las Vegas flights
Minneapolis to Orlando flights
Newark to New Orleans flights
O'Hare Intl to Fort Lauderdale flights

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 29, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$179Average$295FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$179Average$250FlexibilityNo cancel feeOn-time69%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.
Site
©2026 Cheapflights