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$49+ Cheap flights from Illinois to Michigan

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 11/15. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — DTW
Oct 17 — Oct 241
Fri 10/17
Fri 10/24
1 adult, Economy
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Cheap flight deals from Illinois to Michigan

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

Round-trip from

$97
(United Airlines)

One-way from

$49
(American Airlines)

Popular in

February

Cheapest in

October

Average price

$158

Good round-trip deal

$97 or less

Good one-way deal

$45 or less
From Illinois to Michigan
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One-way flight from Illinois to Michigan
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Highest demand for flights based on searches. 19% potential increase in price ($61 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($12 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 Illinois to Michigan.
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Price to beat on a one-way flight from Illinois to Michigan.
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Find flight deals from Illinois to Michigan

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

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.
Thu 10/98:45 amORD - GRR
Nonstop1h 01mUnited Airlines
Mon 10/136:39 pmGRR - ORD
Nonstop1h 11mUnited Airlines
Deal found 9/16$97
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.
Thu 10/99:30 amMDW - GRR
Nonstop0h 55mSouthwest
Mon 10/136:05 pmGRR - MDW
Nonstop1h 05mSouthwest
Deal found 9/17$97
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.
Thu 10/235:40 amSTL - MDW
Nonstop1h 10mSouthwest
Mon 10/277:40 amMDW - STL
Nonstop1h 10mSouthwest
Deal found 9/17$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.
Wed 10/155:00 amSTL - ORD
Nonstop1h 30mUnited Airlines
Wed 10/229:25 amORD - STL
Nonstop1h 24mUnited Airlines
Deal found 9/16$97
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.
Thu 10/96:59 amORD - GRR
Nonstop1h 00mAmerican Airlines
Mon 10/138:20 amGRR - ORD
Nonstop1h 10mAmerican Airlines
Deal found 9/16$98
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.
Thu 10/237:16 amSTL - ORD
Nonstop1h 27mAmerican Airlines
Mon 10/2710:34 pmORD - STL
Nonstop1h 20mAmerican Airlines
Deal found 9/15$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.
Tue 10/145:35 amMDW - DTW
1 stop6h 30mSouthwest
Thu 10/168:15 pmDTW - MDW
Nonstop1h 15mSouthwest
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.
Mon 10/279:25 pmMDW - DTW
Nonstop1h 10mSouthwest
Wed 10/291:30 pmDTW - MDW
2 stops6h 40mSouthwest
Deal found 9/15$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.
Wed 11/510:15 amSTL - MDW
Nonstop1h 10mSouthwest
Sat 11/159:45 amMDW - STL
2 stops7h 10mSouthwest
Deal found 9/15$112
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.
Thu 10/165:00 amSTL - ORD
Nonstop1h 30mUnited Airlines
Tue 11/112:21 pmORD - STL
Nonstop1h 26mUnited Airlines
Deal found 9/16$114
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.
Mon 10/272:50 pmORD - DTW
1 stop6h 20mSouthwest
Wed 10/295:50 amDTW - ORD
1 stop7h 00mSouthwest
Deal found 9/15$117
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.
Wed 10/156:55 amSTL - ORD
1 stop5h 50mSouthwest
Wed 10/227:30 amORD - STL
1 stop7h 15mSouthwest
Deal found 9/16$117

Cheapflights Fare Finder

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

Fly from

Illinois

Fly to

Michigan

Route

Depart

Return

Price

ChicagoGrand Rapids

ORD - GRR

ORDGRR

Chicago O'Hare Intl

Mon 10/13

8:45 am-10:46 am

Nonstop1h 01m

Grand Rapids Gerald R. Ford Intl

Mon 10/20

6:39 pm-6:50 pm

Nonstop1h 11m

$97

ChicagoGrand Rapids

MDW - GRR

MDWGRR

Chicago Midway

Thu 10/9

9:30 am-11:25 am

Nonstop0h 55m

Grand Rapids Gerald R. Ford Intl

Mon 10/13

6:05 pm-6:10 pm

Nonstop1h 05m

$97

St. LouisChicago

STL - MDW

STLMDW

Lambert-St Louis

Thu 11/20

7:00 am-8:10 am

Nonstop1h 10m

Chicago Midway

Thu 11/20

11:25 am-12:35 pm

Nonstop1h 10m

$97

St. LouisChicago

STL - ORD

STLORD

Lambert-St Louis

Wed 10/15

5:00 am-6:30 am

Nonstop1h 30m

Chicago O'Hare Intl

Wed 10/22

9:25 am-10:49 am

Nonstop1h 24m

$97

St. LouisChicago

STL - MDW

STLMDW

Lambert-St Louis

Thu 10/23

5:40 am-6:50 am

Nonstop1h 10m

Chicago Midway

Mon 10/27

7:40 am-8:50 am

Nonstop1h 10m

$97

St. LouisChicago

STL - ORD

STLORD

Lambert-St Louis

Wed 10/15

5:00 am-6:30 am

Nonstop1h 30m

Chicago O'Hare Intl

Wed 10/15

1:03 pm-2:27 pm

Nonstop1h 24m

$97

St. LouisChicago

STL - ORD

STLORD

Lambert-St Louis

Wed 10/15

12:25 pm-1:50 pm

Nonstop1h 25m

Chicago O'Hare Intl

Thu 10/16

2:20 pm-3:44 pm

Nonstop1h 24m

$97

St. LouisChicago

STL - ORD

STLORD

Lambert-St Louis

Tue 10/14

6:30 am-8:00 am

Nonstop1h 30m

Chicago O'Hare Intl

Tue 10/21

9:25 am-10:49 am

Nonstop1h 24m

$97

ChicagoGrand Rapids

ORD - GRR

ORDGRR

Chicago O'Hare Intl

Thu 10/9

6:59 am-8:59 am

Nonstop1h 00m

Grand Rapids Gerald R. Ford Intl

Mon 10/13

8:20 am-8:30 am

Nonstop1h 10m

$98

ChicagoDetroit

MDW - DTW

MDWDTW

Chicago Midway

Tue 11/11

10:00 am-12:20 pm

Nonstop1h 20m

Detroit Metropolitan Wayne County

Wed 11/12

6:10 am-9:55 am

1 stop4h 45m

$107

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/15

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

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

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

Currently, August is the cheapest month in which you can book a flight from Illinois to Michigan (average of $250). Flying from Illinois to Michigan in March is currently the most expensive (average of $305). 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 IL to MI?

Find hourly flight availability from Illinois to Michigan. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 17, 2025.

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

Weekly flight availability from Illinois to Michigan

Explore weekly flight availability from Illinois to Michigan. 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 17, 2025.

The most flights from USIL to USMI are scheduled on a Monday (84 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (34 on average).

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

Reviews of airlines servicing Michigan

Get insights into the airlines that provide service to Michigan. 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 Michigan. Reviews last updated September 17, 2025.
Read through reviews of airlines operating flights from Illinois to Michigan, such as Southwest, Delta, and United Airlines. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,242 reviews

Entertainment

7.5

Comfort

8.0

Overall

8.0

Crew

8.6

Boarding

8.1

Food

7.0

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

Entertainment

7.5

Comfort

8.0

Overall

8.0

Crew

8.6

Boarding

8.1

Food

7.0

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

Entertainment

7.5

Comfort

8.0

Overall

8.0

Crew

8.6

Boarding

8.1

Food

7.0

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

Entertainment

7.5

Comfort

8.0

Overall

8.0

Crew

8.6

Boarding

8.1

Food

7.0

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

Entertainment

7.5

Comfort

8.0

Overall

8.0

Crew

8.6

Boarding

8.1

Food

7.0

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

Entertainment

7.5

Comfort

8.0

Overall

8.0

Crew

8.6

Boarding

8.1

Food

7.0

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 Illinois to Michigan. 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 Illinois to Michigan?

    For as low as $97, United Airlines can have you in Michigan from Illinois in 55m. The distance between Illinois and Michigan is about 136 mi. All flights are typically nonstop.

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

    One-way options have recently been found by users for as low as $49 on Delta. Other airlines that offer cheap prices include United Airlines from $49 and American Airlines from $49 one-way.

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

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

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

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

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

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

    Currently, August is the cheapest month in which you can book a flight from Illinois to Michigan (average of $250). Flying from Illinois to Michigan in March is currently the most expensive (average of $305). 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 Illinois to Michigan

See prices for flight routes from nearby airports that may be better suited for you.
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Top 6 airlines flying from Illinois to Michigan

Discover the top 6 airlines that operate flights from Illinois to Michigan. 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 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$37Average$69FlexibilityNo cancel feeOn-time65%
DeltaCheapest$91Average$236FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$91Average$340FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$99Average$345FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$107Average$296FlexibilityNo cancel feeOn-time63%
FrontierCheapest$144Average$178FlexibilityNo cancel feeOn-time62%

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