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$60+ Cheap flights from Milwaukee (MKE) 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 10/22. Fares are subject to change and may not be available on all flights or dates of travel.
MKE — ORD
Oct 15 — Oct 221
Wed 10/15
Wed 10/22
1 adult, Economy
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Cheap flight deals from Milwaukee to Illinois

Keep the following information in mind while searching for Milwaukee to Illinois flight deals. Data was last updated September 15, 2025.

Round-trip from

$119
(United Airlines)

One-way from

$60
(United Airlines)

Popular in

November

Cheapest in

June

Average price

$239

Good round-trip deal

$319 or less

Good one-way deal

$164 or less
From Milwaukee-Mitchell to Illinois
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One-way flight from Milwaukee-Mitchell to Illinois
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Highest demand for flights based on searches. 13% potential increase in price ($45 potential increase over avg. RT price).
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Cheapest flight prices on average. 6% potential price decrease ($20 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Price to beat on a round-trip flight from Milwaukee-Mitchell to Illinois.
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Price to beat on a one-way flight from Milwaukee-Mitchell to Illinois.
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Find flight deals from Milwaukee to Illinois

Cheapest flights from Milwaukee to Illinois
Explore the most affordable flight options available from Milwaukee to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 15, 2025.

This United Airlines deal was found by Cheapflights users on 9/13. 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 10/176:00 amMKE - STL
1 stop4h 49mUnited Airlines
Mon 10/205:28 pmSTL - MKE
1 stop4h 28mUnited Airlines
Deal found 9/13$119
This United Airlines deal was found by Cheapflights users on 9/14. 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 11/215:52 pmMKE - STL
1 stop4h 53mUnited Airlines
Fri 11/285:24 pmSTL - MKE
1 stop3h 26mUnited Airlines
Deal found 9/14$160
This United Airlines deal was found by Cheapflights users on 9/13. 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 10/105:00 amMKE - STL
1 stop5h 49mUnited Airlines
Sun 10/126:30 amSTL - MKE
1 stop3h 41mUnited Airlines
Deal found 9/13$164
This United Airlines deal was found by Cheapflights users on 9/13. 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.
Sat 11/2210:53 amMKE - STL
1 stop3h 32mUnited Airlines
Fri 11/285:24 pmSTL - MKE
1 stop5h 19mUnited Airlines
Deal found 9/13$179
This American Airlines deal was found by Cheapflights users on 9/13. 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.
Fri 10/105:25 amMKE - ORD
Nonstop1h 04mAmerican Airlines
Tue 10/1411:00 pmORD - MKE
Nonstop0h 56mAmerican Airlines
Deal found 9/13$179
This American Airlines deal was found by Cheapflights users on 9/14. 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 10/292:05 pmMKE - ORD
Nonstop1h 09mAmerican Airlines
Wed 11/56:07 pmORD - MKE
Nonstop1h 07mAmerican Airlines
Deal found 9/14$180
This American Airlines deal was found by Cheapflights users on 9/15. 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.
Tue 9/308:43 amMKE - ORD
Nonstop1h 05mAmerican Airlines
Sat 10/45:55 pmORD - MKE
Nonstop0h 53mAmerican Airlines
Deal found 9/15$189
This United Airlines deal was found by Cheapflights users on 9/15. 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.
Thu 9/255:00 amMKE - ORD
Nonstop1h 10mUnited Airlines
Tue 9/309:05 amORD - MKE
Nonstop1h 06mUnited Airlines
Deal found 9/15$199
This Southwest deal was found by Cheapflights users on 9/13. 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 10/284:05 pmMKE - MDW
1 stop6h 00mSouthwest
Fri 11/147:00 pmMDW - MKE
1 stop4h 30mSouthwest
Deal found 9/13$219
This United Airlines deal was found by Cheapflights users on 9/13. 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.
Sat 10/115:45 pmMKE - ORD
Nonstop1h 10mUnited Airlines
Mon 10/138:50 pmORD - MKE
Nonstop1h 06mUnited Airlines
Deal found 9/13$239
This American Airlines deal was found by Cheapflights users on 9/15. 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.
Sun 12/73:42 pmMKE - ORD
Nonstop1h 12mAmerican Airlines
Fri 12/199:05 amORD - MKE
Nonstop1h 08mAmerican Airlines
Deal found 9/15$247
This American Airlines deal was found by Cheapflights users on 9/14. 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.
Fri 10/178:16 pmMKE - STL
1 stop3h 38mAmerican Airlines
Sun 10/195:11 amSTL - MKE
1 stop5h 32mAmerican Airlines
Deal found 9/14$255

Cheapflights Fare Finder

 
Customize your flight search to find flights from Milwaukee 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 September 15, 2025.
Use the filters below to find and compare flights from Milwaukee to Illinois that are best for you.

Fly from

Milwaukee

Fly to

Illinois

Route

Depart

Return

Price

MilwaukeeSt. Louis

MKE - STL

MKESTL

Milwaukee-Mitchell

Sun 10/19

7:00 am-10:49 am

1 stop3h 49m

Lambert-St Louis

Wed 10/22

5:00 am-10:11 am

1 stop5h 11m

$119

MilwaukeeSt. Louis

MKE - STL

MKESTL

Milwaukee-Mitchell

Fri 10/17

6:00 am-10:49 am

1 stop4h 49m

Lambert-St Louis

Mon 10/20

5:28 pm-9:56 pm

1 stop4h 28m

$119

MilwaukeeSt. Louis

MKE - STL

MKESTL

Milwaukee-Mitchell

Sat 10/18

6:40 pm-10:35 pm

1 stop3h 55m

Lambert-St Louis

Mon 10/20

5:28 pm-9:56 pm

1 stop4h 28m

$119

MilwaukeeSt. Louis

MKE - STL

MKESTL

Milwaukee-Mitchell

Fri 11/21

5:52 pm-10:45 pm

1 stop4h 53m

Lambert-St Louis

Fri 11/28

5:24 pm-8:50 pm

1 stop3h 26m

$160

MilwaukeeSt. Louis

MKE - STL

MKESTL

Milwaukee-Mitchell

Fri 10/10

5:00 am-10:49 am

1 stop5h 49m

Lambert-St Louis

Sun 10/12

6:30 am-10:11 am

1 stop3h 41m

$164

MilwaukeeSt. Louis

MKE - STL

MKESTL

Milwaukee-Mitchell

Mon 3/2

6:00 pm-11:10 pm

1 stop5h 10m

Lambert-St Louis

Wed 3/4

6:45 am-12:31 pm

1 stop5h 46m

$177

MilwaukeeChicago

MKE - ORD

MKEORD

Milwaukee-Mitchell

Fri 10/10

5:25 am-6:29 am

Nonstop1h 04m

Chicago O'Hare Intl

Tue 10/14

11:00 pm-11:56 pm

Nonstop0h 56m

$179

MilwaukeeChicago

MKE - ORD

MKEORD

Milwaukee-Mitchell

Fri 10/10

4:59 pm-6:10 pm

Nonstop1h 11m

Chicago O'Hare Intl

Sun 10/12

9:27 am-10:33 am

Nonstop1h 06m

$179

MilwaukeeChicago

MKE - ORD

MKEORD

Milwaukee-Mitchell

Fri 10/10

5:25 am-6:29 am

Nonstop1h 04m

Chicago O'Hare Intl

Mon 10/13

6:36 pm-7:46 pm

Nonstop1h 10m

$179

MilwaukeeChicago

MKE - ORD

MKEORD

Milwaukee-Mitchell

Tue 11/11

5:00 am-6:10 am

Nonstop1h 10m

Chicago O'Hare Intl

Sat 11/22

4:49 pm-5:43 pm

Nonstop0h 54m

$179

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/14

Showing 1-10 of 55 results
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Best time to book a flight from Milwaukee to Illinois

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

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

Currently, August is the cheapest month in which you can book a flight from Milwaukee to Illinois (average of $245). Flying from Milwaukee 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 MKE to IL?

Find hourly flight availability from Milwaukee 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 September 15, 2025.

When flying from Milwaukee 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 Milwaukee to Illinois

Explore weekly flight availability from Milwaukee 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 September 15, 2025.

The most flights from MKE to USIL are scheduled on a Monday (54 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (31 on average).

How much does it cost to fly round-trip from Milwaukee 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 September 15, 2025.
Read reviews from past customers who have flown United Airlines and American Airlines from Milwaukee to Illinois. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,929 reviews

Crew

8.1

Food

6.6

Comfort

7.3

Entertainment

7.1

Overall

7.4

Boarding

7.7

Reviews

1 / 20
2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!
United Airlines
7.4
Good
8,929 reviews
United Airlines
7.4
Good
8,929 reviews

Crew

8.1

Food

6.6

Comfort

7.3

Entertainment

7.1

Overall

7.4

Boarding

7.7

Reviews

1 / 20
2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!
American Airlines
7.2
Good
10,000 reviews
United Airlines
7.4
Good
8,929 reviews

Crew

8.1

Food

6.6

Comfort

7.3

Entertainment

7.1

Overall

7.4

Boarding

7.7

Reviews

1 / 20
2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!

Related info for your journey

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

  • What airport do you fly from for flights from Milwaukee to Illinois?

    Milwaukee-Mitchell (MKE), located 6.4 mi from the city center, is the airport you fly out of when you book flights from Milwaukee to Illinois.

  • How long is the flight from Milwaukee to Illinois?

    Departing from Milwaukee to Illinois will take you 1h 04m. Airlines will cover a distance of 67 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

    For one-way options, check prices for United Airlines. According to our data, you can fly for as low as $60. Users have also found prices from $100 and $110 on Frontier and Southwest, respectively.

  • What are the most popular routes from Milwaukee to Illinois?

    Most travelers choose Milwaukee-Mitchell - Lambert-St Louis, Milwaukee-Mitchell - Chicago O'Hare Intl or Milwaukee-Mitchell - Evansville Dress Regional when deciding on the best route from Milwaukee to Illinois.

  • What are the most reliable airlines from Milwaukee to Illinois?

    Consider Copa Airlines (66%), Avianca (66%) or United Airlines (64%) when booking your flight. These represent the most reliable airlines when flying from Milwaukee to Illinois.

  • What are the cheapest flights from Milwaukee to Illinois?

    Looking for the cheapest flight from Milwaukee to Illinois? While on average our users pay $877, our data indicates the cheapest price to be $108. The most popular route (Milwaukee-Mitchell - Lambert-St Louis), is priced around $119.

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

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

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

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

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

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

    Currently, August is the cheapest month in which you can book a flight from Milwaukee to Illinois (average of $245). Flying from Milwaukee 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 Milwaukee 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 Milwaukee to Illinois

Discover the top 2 airlines that operate flights from Milwaukee 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 September 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$179Average$264FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$229Average$309FlexibilityNo cancel feeOn-time69%

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