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$49+ Cheap flights from Michigan 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 10/20. Fares are subject to change and may not be available on all flights or dates of travel.
DTW — ORD
oct. 17 — oct. 241
vie. 10/17
vie. 10/24
1 adult, Economy
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Cheap flight deals from Michigan to Illinois

Keep the following information in mind while searching for Michigan to Illinois flight deals. Data was last updated septiembre 17, 2025.

Round-trip from

$97
(Southwest)

One-way from

$49
(Southwest)

Popular in

June

Cheapest in

October

Average price

$174

Good round-trip deal

$111 or less

Good one-way deal

$73 or less
From Michigan to Illinois
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One-way flight from Michigan to Illinois
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Highest demand for flights based on searches. 22% potential increase in price ($65 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($8 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 Michigan to Illinois.
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Price to beat on a one-way flight from Michigan to Illinois.
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Find flight deals from Michigan to Illinois

Cheapest flights from Michigan to Illinois
Explore the most affordable flight options available from Michigan to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on septiembre 17, 2025.

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.
lun. 10/137:30 amGRR - ORD
Nonstop1h 11mUnited Airlines
lun. 10/208:45 amORD - GRR
Nonstop1h 01mUnited Airlines
Deal found 9/15$97
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 10/1512:40 pmMDW - STL
Nonstop1h 10mSouthwest
mié. 10/221:15 pmSTL - MDW
Nonstop1h 10mSouthwest
Deal found 9/15$97
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 10/113:50 pmDTW - ORD
Nonstop1h 21mDelta
lun. 10/136:59 pmORD - DTW
Nonstop1h 32mDelta
Deal found 9/15$97
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 10/116:04 pmDTW - MDW
Nonstop1h 21mDelta
mar. 10/141:08 pmMDW - DTW
Nonstop1h 11mDelta
Deal found 9/15$97
This United Airlines deal was found by Cheapflights users on 9/16. 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.
mar. 10/142:20 pmORD - STL
Nonstop1h 24mUnited Airlines
mar. 10/213:23 pmSTL - ORD
Nonstop1h 25mUnited Airlines
Deal found 9/16$97
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.
jue. 10/95:33 pmGRR - ORD
Nonstop1h 11mAmerican Airlines
lun. 10/139:40 pmORD - GRR
Nonstop1h 05mAmerican Airlines
Deal found 9/15$98
This American Airlines deal was found by Cheapflights users on 9/16. 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.
jue. 10/96:53 pmORD - STL
Nonstop1h 33mAmerican Airlines
lun. 10/136:00 amSTL - ORD
Nonstop1h 23mAmerican Airlines
Deal found 9/16$98
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 10/206:00 pmMDW - STL
1 stop3h 30mSouthwest
mié. 10/221:15 pmSTL - MDW
Nonstop1h 10mSouthwest
Deal found 9/15$107
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 10/165:40 pmDTW - MDW
1 stop5h 40mSouthwest
lun. 10/209:25 pmMDW - DTW
Nonstop1h 10mSouthwest
Deal found 9/15$107
This Southwest deal was found by Cheapflights users on 9/16. 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.
sáb. 10/188:20 amMDW - STL
2 stops6h 10mSouthwest
jue. 10/235:40 amSTL - MDW
Nonstop1h 10mSouthwest
Deal found 9/16$112
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 10/71:30 pmDTW - MDW
2 stops6h 40mSouthwest
mié. 10/88:50 pmMDW - DTW
Nonstop1h 10mSouthwest
Deal found 9/15$112
This Southwest deal was found by Cheapflights users on 9/17. 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.
mié. 10/86:15 amDTW - MDW
1 stop10h 40mSouthwest
mié. 10/88:50 pmMDW - DTW
Nonstop1h 10mSouthwest
Deal found 9/17$113

Cheapflights Fare Finder

 
Customize your flight search to find flights from Michigan 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 septiembre 17, 2025.
Use the filters below to find and compare flights from Michigan to Illinois that are best for you.

Fly from

Michigan

Fly to

Illinois

Route

Depart

Return

Price

ChicagoSt. Louis

MDW - STL

MDWSTL

Chicago Midway

mar. 10/14

8:40 pm-9:50 pm

Nonstop1h 10m

Lambert-St Louis

mar. 10/21

1:15 pm-2:25 pm

Nonstop1h 10m

$97

Grand RapidsChicago

GRR - ORD

GRRORD

Grand Rapids Gerald R. Ford Intl

lun. 10/13

8:20 am-8:30 am

Nonstop1h 10m

Chicago O'Hare Intl

lun. 10/13

9:40 pm-11:45 pm

Nonstop1h 05m

$97

Grand RapidsChicago

GRR - ORD

GRRORD

Grand Rapids Gerald R. Ford Intl

lun. 10/20

11:46 am-11:57 am

Nonstop1h 11m

Chicago O'Hare Intl

jue. 10/23

9:37 pm-11:44 pm

Nonstop1h 07m

$97

DetroitChicago

DTW - ORD

DTWORD

Detroit Metropolitan Wayne County

sáb. 10/11

8:45 am-9:12 am

Nonstop1h 27m

Chicago O'Hare Intl

lun. 10/13

6:59 pm-9:31 pm

Nonstop1h 32m

$97

ChicagoSt. Louis

MDW - STL

MDWSTL

Chicago Midway

mar. 10/28

7:55 am-9:10 am

Nonstop1h 15m

Lambert-St Louis

jue. 10/30

6:30 pm-7:40 pm

Nonstop1h 10m

$97

Grand RapidsChicago

GRR - ORD

GRRORD

Grand Rapids Gerald R. Ford Intl

lun. 10/13

7:30 am-7:41 am

Nonstop1h 11m

Chicago O'Hare Intl

lun. 10/20

9:37 pm-11:44 pm

Nonstop1h 07m

$97

Grand RapidsChicago

GRR - ORD

GRRORD

Grand Rapids Gerald R. Ford Intl

lun. 10/20

3:35 pm-3:46 pm

Nonstop1h 11m

Chicago O'Hare Intl

jue. 10/23

9:45 am-11:51 am

Nonstop1h 06m

$97

DetroitChicago

DTW - ORD

DTWORD

Detroit Metropolitan Wayne County

sáb. 10/11

8:45 am-9:12 am

Nonstop1h 27m

Chicago O'Hare Intl

sáb. 10/11

1:25 pm-3:49 pm

Nonstop1h 24m

$97

DetroitChicago

DTW - ORD

DTWORD

Detroit Metropolitan Wayne County

lun. 10/20

4:20 pm-4:53 pm

Nonstop1h 33m

Chicago O'Hare Intl

jue. 10/23

2:25 pm-4:51 pm

Nonstop1h 26m

$97

DetroitChicago

DTW - ORD

DTWORD

Detroit Metropolitan Wayne County

jue. 10/30

9:20 am-9:43 am

Nonstop1h 23m

Chicago O'Hare Intl

jue. 11/6

8:55 am-11:16 am

Nonstop1h 21m

$97

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/14

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

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

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

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

Find hourly flight availability from Michigan 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 septiembre 17, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Michigan to Illinois as you normally would.

Weekly flight availability from Michigan to Illinois

Explore weekly flight availability from Michigan 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 septiembre 17, 2025.

The most flights from USMI to USIL are scheduled on a Monday (92 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (27 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 septiembre 17, 2025.
See what other customers who have flown with Southwest, Delta, and United Airlines from Michigan 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
4,242 reviews

Overall

8.0

Boarding

8.1

Crew

8.6

Comfort

8.0

Food

7.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Southwest
8.0
Very good
4,242 reviews
Southwest
8.0
Very good
4,242 reviews

Overall

8.0

Boarding

8.1

Crew

8.6

Comfort

8.0

Food

7.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Delta
8.0
Very good
7,961 reviews
Southwest
8.0
Very good
4,242 reviews

Overall

8.0

Boarding

8.1

Crew

8.6

Comfort

8.0

Food

7.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
United Airlines
7.4
Good
8,926 reviews
Southwest
8.0
Very good
4,242 reviews

Overall

8.0

Boarding

8.1

Crew

8.6

Comfort

8.0

Food

7.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,242 reviews

Overall

8.0

Boarding

8.1

Crew

8.6

Comfort

8.0

Food

7.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Spirit Airlines
6.3
Okay
8,023 reviews
Southwest
8.0
Very good
4,242 reviews

Overall

8.0

Boarding

8.1

Crew

8.6

Comfort

8.0

Food

7.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

Related info for your journey

Find useful and relevant information for your journey from Michigan 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 Michigan to Illinois?

    There are many flights that can get you from Michigan to Illinois in 1h 10m. Fly via Southwest, American Airlines, or United Airlines to get the fastest option. The distance between Michigan and Illinois is about 251 mi. Most flights are nonstop.

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

    To fly one-way, consider booking your trip with United Airlines, which is currently one of the cheapest options available, starting at $49. American Airlines flights start at $49 while deals on Southwest start at $49 one-way.

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

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

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

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

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

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

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

See prices for flight routes from nearby airports that may be better suited for you.
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Top 5 airlines flying from Michigan to Illinois

Discover the top 5 airlines that operate flights from Michigan 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 septiembre 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$38Average$86FlexibilityNo cancel feeOn-time65%
American AirlinesCheapest$91Average$354FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$97Average$313FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$97Average$275FlexibilityNo cancel feeOn-time63%
DeltaCheapest$97Average$282FlexibilityNo cancel feeOn-timeN/A

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