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Illinois

$46+ 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 8/12. Fares are subject to change and may not be available on all flights or dates of travel.
MKE — ORD
Jul 6 — Jul 131
Sun 7/6
Sun 7/13
1 adult, Economy
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Cheap flight deals from Wisconsin to Illinois

Keep the following information in mind while searching for Wisconsin to Illinois flight deals. Data was last updated July 1, 2025.

Round-trip from

$91
(American Airlines)

One-way from

$46
(United Airlines)

Popular in

November

Cheapest in

March

Good round-trip deal

$298 or less

Good one-way deal

$142 or less
From Wisconsin to Illinois
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One-way flight from Wisconsin to Illinois
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Highest demand for flights based on searches. 5% potential increase in price ($18 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($18 potential savings vs. average RT price).
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Price to beat on a round-trip flight from Wisconsin to Illinois.
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Price to beat on a one-way flight from Wisconsin to Illinois.
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Find 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 July 1, 2025.

This American Airlines deal was found by Cheapflights users on 6/30. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/3010:36 pmORD - STL
Nonstop1h 15mAmerican Airlines
Sat 8/27:23 amSTL - ORD
Nonstop1h 23mAmerican Airlines
Deal found 6/30$91
This eDestinos deal was found by Cheapflights users on 6/29. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/136:00 pmMSP - STL
Nonstop1h 31mSun Country Air
Sun 7/206:05 amSTL - MSP
Nonstop1h 35mSun Country Air
Deal found 6/29$105
This Priceline deal was found by Cheapflights users on 6/28. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/295:10 amORD - STL
1 stop7h 46mFrontier
Mon 9/12:01 pmSTL - ORD
1 stop9h 53mFrontier
Deal found 6/28$112
This Southwest deal was found by Cheapflights users on 6/30. 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.
Sat 8/162:55 pmORD - STL
1 stop5h 35mSouthwest
Mon 8/185:10 amSTL - ORD
1 stop5h 35mSouthwest
Deal found 6/30$114
This Priceline deal was found by Cheapflights users on 6/28. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/264:14 pmMSP - ORD
1 stop7h 15mFrontier
Sat 8/25:01 amORD - MSP
1 stop9h 50mFrontier
Deal found 6/28$115
This Priceline deal was found by Cheapflights users on 6/30. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/313:42 pmMSP - ORD
Nonstop1h 39mMultiple Airlines
Sun 8/35:01 amORD - MSP
1 stop6h 22mMultiple Airlines
Deal found 6/30$116
This Southwest deal was found by Cheapflights users on 6/30. 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.
Thu 8/282:20 pmMSP - MDW
1 stop3h 10mSouthwest
Mon 9/15:25 amMDW - MSP
1 stop5h 35mSouthwest
Deal found 6/30$117
This Southwest deal was found by Cheapflights users on 6/29. 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 8/268:50 amMSP - ORD
1 stop5h 20mSouthwest
Wed 8/2712:40 pmORD - MSP
1 stop7h 15mSouthwest
Deal found 6/29$117
This Mytrip deal was found by Cheapflights users on 6/30. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/55:30 pmMSP - ORD
Nonstop1h 42mSun Country Air
Sun 9/77:02 pmORD - MSP
Nonstop1h 47mSun Country Air
Deal found 6/30$118
This Delta deal was found by Cheapflights users on 6/30. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/247:14 amMSP - MDW
Nonstop1h 37mDelta
Tue 8/267:17 pmMDW - MSP
Nonstop1h 43mDelta
Deal found 6/30$119
This Delta deal was found by Cheapflights users on 6/29. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/246:55 amMSP - ORD
Nonstop1h 29mDelta
Mon 8/258:25 amORD - MSP
Nonstop1h 34mDelta
Deal found 6/29$119
This United Airlines deal was found by Cheapflights users on 7/1. 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 8/12:23 pmORD - STL
Nonstop1h 24mUnited Airlines
Mon 8/45:00 amSTL - ORD
Nonstop1h 30mUnited Airlines
Deal found 7/1$124

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 July 1, 2025.
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

ChicagoSt. Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

Wed 7/30

10:36 pm-11:51 pm

Nonstop1h 15m

Lambert-St Louis

Sat 8/2

7:23 am-8:46 am

Nonstop1h 23m

$91

MinneapolisSt. Louis

MSP - STL

MSPSTL

Minneapolis St Paul

Sun 7/13

6:00 pm-7:31 pm

Nonstop1h 31m

Lambert-St Louis

Sun 7/20

6:05 am-7:40 am

Nonstop1h 35m

$105

ChicagoSt. Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

Fri 8/29

5:10 am-12:56 pm

1 stop7h 46m

Lambert-St Louis

Mon 9/1

2:01 pm-11:54 pm

1 stop9h 53m

$112

ChicagoSt. Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

Sat 8/16

2:55 pm-8:30 pm

1 stop5h 35m

Lambert-St Louis

Mon 8/18

5:10 am-10:45 am

1 stop5h 35m

$114

MinneapolisChicago

MSP - ORD

MSPORD

Minneapolis St Paul

Sat 7/26

4:14 pm-11:29 pm

1 stop7h 15m

Chicago O'Hare Intl

Sat 8/2

5:01 am-2:51 pm

1 stop9h 50m

$115

MinneapolisChicago

MSP - ORD

MSPORD

Minneapolis St Paul

Thu 7/31

3:42 pm-5:21 pm

Nonstop1h 39m

Chicago O'Hare Intl

Sun 8/3

5:01 am-11:23 am

1 stop6h 22m

$116

MinneapolisChicago

MSP - MDW

MSPMDW

Minneapolis St Paul

Thu 8/28

2:20 pm-5:30 pm

1 stop3h 10m

Chicago Midway

Mon 9/1

7:30 am-11:30 am

1 stop4h 00m

$117

MinneapolisChicago

MSP - ORD

MSPORD

Minneapolis St Paul

Tue 8/26

8:50 am-2:10 pm

1 stop5h 20m

Chicago O'Hare Intl

Wed 8/27

12:40 pm-7:55 pm

1 stop7h 15m

$117

MinneapolisChicago

MSP - ORD

MSPORD

Minneapolis St Paul

Fri 9/5

5:30 pm-7:12 pm

Nonstop1h 42m

Chicago O'Hare Intl

Sun 9/7

7:02 pm-8:49 pm

Nonstop1h 47m

$118

MinneapolisChicago

MSP - MDW

MSPMDW

Minneapolis St Paul

Sun 8/24

7:14 am-8:51 am

Nonstop1h 37m

Chicago Midway

Tue 8/26

7:17 pm-9:00 pm

Nonstop1h 43m

$119

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/1

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, August is the cheapest month in which you can book a flight from Wisconsin to Illinois (average of $245). Flying from Wisconsin to Illinois in March is currently the most expensive (average of $321). 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 July 1, 2025.

When flying from Wisconsin 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.

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 July 1, 2025.

The most flights from USWI to USIL are scheduled on a Tuesday (44 on average). You will have fewer flight options on Friday, which is when the least amount of flights are scheduled (23 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 July 1, 2025.
See what other customers who have flown with Southwest, Delta, and United 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.
Southwest
8.0
Very good
4,275 reviews

Crew

8.6

Food

7.0

Entertainment

7.6

Boarding

8.2

Comfort

8.0

Overall

8.0

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
Southwest
8.0
Very good
4,275 reviews
Southwest
8.0
Very good
4,275 reviews

Crew

8.6

Food

7.0

Entertainment

7.6

Boarding

8.2

Comfort

8.0

Overall

8.0

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
Delta
8.0
Very good
7,974 reviews
Southwest
8.0
Very good
4,275 reviews

Crew

8.6

Food

7.0

Entertainment

7.6

Boarding

8.2

Comfort

8.0

Overall

8.0

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
United Airlines
7.4
Good
8,858 reviews
Southwest
8.0
Very good
4,275 reviews

Crew

8.6

Food

7.0

Entertainment

7.6

Boarding

8.2

Comfort

8.0

Overall

8.0

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,275 reviews

Crew

8.6

Food

7.0

Entertainment

7.6

Boarding

8.2

Comfort

8.0

Overall

8.0

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
Allegiant Air
7.2
Good
710 reviews
Southwest
8.0
Very good
4,275 reviews

Crew

8.6

Food

7.0

Entertainment

7.6

Boarding

8.2

Comfort

8.0

Overall

8.0

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.

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.

  • What are the cheapest airlines to fly from Wisconsin to Illinois one-way?

    The cheapest airlines for a one-way flight from Wisconsin to Illinois are United Airlines ($46), Frontier ($53), and Southwest ($56).

  • 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, August is the cheapest month in which you can book a flight from Wisconsin to Illinois (average of $245). Flying from Wisconsin to Illinois in March is currently the most expensive (average of $321). 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 July 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$179Average$327FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$179Average$309FlexibilityNo cancel feeOn-time71%

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