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$28+ 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 8/21. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — DTW
Jul 6 — Jul 131
Sun 7/6
Sun 7/13
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 July 1, 2025.

Round-trip from

$58
(FlightHub)

One-way from

$28
(FlightHub)

Popular in

February

Cheapest in

October

Average price

$268

Good round-trip deal

$118 or less

Good one-way deal

$69 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. 26% potential increase in price ($82 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($14 potential savings vs. average RT price).
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Average for round-trip flights in July 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 July 1, 2025.

This FlightHub 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/222:30 pmSTL - DTW
Nonstop1h 30mSpirit Airlines
Sun 8/241:00 pmDTW - STL
Nonstop1h 32mSpirit Airlines
Deal found 7/1$58
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.
Mon 7/2110:47 amSTL - DTW
Nonstop1h 29mMultiple Airlines
Thu 7/249:36 amDTW - STL
1 stop4h 58mMultiple Airlines
Deal found 6/30$90
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.
Tue 8/198:30 pmORD - GRR
Nonstop1h 15mAmerican Airlines
Sat 8/2312:21 pmGRR - ORD
Nonstop1h 08mAmerican Airlines
Deal found 6/30$91
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/295:25 amSTL - MDW
Nonstop1h 10mSouthwest
Tue 8/55:40 pmMDW - STL
Nonstop1h 15mSouthwest
Deal found 7/1$91
This American Airlines 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/97:23 amSTL - ORD
Nonstop1h 25mAmerican Airlines
Tue 8/128:45 pmORD - STL
Nonstop1h 32mAmerican Airlines
Deal found 6/29$91
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 10/183:35 pmSTL - ORD
1 stop7h 30mSouthwest
Tue 10/287:30 amORD - STL
1 stop7h 15mSouthwest
Deal found 6/30$111
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/187:20 pmSTL - DTW
Nonstop1h 30mSouthwest
Mon 9/228:55 amDTW - STL
Nonstop1h 35mSouthwest
Deal found 6/28$119
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/15:00 amSTL - ORD
Nonstop1h 30mUnited Airlines
Mon 8/189:20 pmORD - STL
Nonstop1h 25mUnited Airlines
Deal found 6/30$124
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.
Thu 7/315:50 pmMDW - DTW
Nonstop1h 10mSouthwest
Mon 8/45:15 amDTW - MDW
1 stop4h 40mSouthwest
Deal found 6/29$134
This SmartFares 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/124:36 pmORD - DTW
1 stop6h 53mSpirit Airlines
Tue 8/1912:00 pmDTW - ORD
1 stop8h 42mSpirit Airlines
Deal found 6/29$135
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.
Thu 8/76:40 amSTL - DTW
Nonstop1h 34mDelta
Sat 8/97:50 pmDTW - STL
Nonstop1h 35mDelta
Deal found 6/29$136
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.
Thu 8/141:08 pmMDW - DTW
Nonstop1h 11mDelta
Thu 8/2112:15 pmDTW - MDW
Nonstop1h 13mDelta
Deal found 6/30$137

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 July 1, 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

St. LouisDetroit

STL - DTW

STLDTW

Lambert-St Louis

Fri 8/22

2:30 pm-5:00 pm

Nonstop1h 30m

Detroit Metropolitan Wayne County

Sun 8/24

1:00 pm-1:32 pm

Nonstop1h 32m

$58

St. LouisDetroit

STL - DTW

STLDTW

Lambert-St Louis

Mon 7/21

10:47 am-1:16 pm

Nonstop1h 29m

Detroit Metropolitan Wayne County

Thu 7/24

9:36 am-1:34 pm

1 stop4h 58m

$90

ChicagoGrand Rapids

ORD - GRR

ORDGRR

Chicago O'Hare Intl

Tue 8/19

8:30 pm-10:45 pm

Nonstop1h 15m

Grand Rapids Gerald R. Ford Intl

Sat 8/23

12:21 pm-12:29 pm

Nonstop1h 08m

$91

St. LouisChicago

STL - MDW

STLMDW

Lambert-St Louis

Tue 7/29

5:25 am-6:35 am

Nonstop1h 10m

Chicago Midway

Tue 8/5

5:40 pm-6:55 pm

Nonstop1h 15m

$91

St. LouisChicago

STL - ORD

STLORD

Lambert-St Louis

Sat 8/9

7:23 am-8:48 am

Nonstop1h 25m

Chicago O'Hare Intl

Tue 8/12

8:45 pm-10:17 pm

Nonstop1h 32m

$91

St. LouisChicago

STL - ORD

STLORD

Lambert-St Louis

Wed 9/10

6:20 am-2:10 pm

1 stop7h 50m

Chicago O'Hare Intl

Wed 9/24

7:30 am-2:30 pm

1 stop7h 00m

$111

St. LouisChicago

STL - ORD

STLORD

Lambert-St Louis

Sun 7/27

2:36 pm-12:22 am

1 stop9h 46m

Chicago O'Hare Intl

Sun 8/3

5:01 am-1:34 pm

1 stop8h 33m

$116

St. LouisDetroit

STL - DTW

STLDTW

Lambert-St Louis

Thu 9/18

7:20 pm-9:50 pm

Nonstop1h 30m

Detroit Metropolitan Wayne County

Mon 9/22

8:55 am-9:30 am

Nonstop1h 35m

$119

St. LouisChicago

STL - ORD

STLORD

Lambert-St Louis

Fri 8/1

5:00 am-6:30 am

Nonstop1h 30m

Chicago O'Hare Intl

Mon 8/18

9:20 pm-10:45 pm

Nonstop1h 25m

$124

ChicagoDetroit

MDW - DTW

MDWDTW

Chicago Midway

Fri 9/26

4:35 pm-6:45 pm

Nonstop1h 10m

Detroit Metropolitan Wayne County

Tue 9/30

6:15 am-10:45 am

1 stop5h 30m

$131

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/29

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, April is the cheapest month in which you can book a flight from Illinois to Michigan (average of $257). 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 July 1, 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 July 1, 2025.

The most flights from USIL to USMI are scheduled on a Tuesday (88 on average). You will have fewer flight options on Friday, which is when the least amount of flights are scheduled (24 on average).

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 July 1, 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
4,273 reviews

Boarding

8.2

Crew

8.6

Entertainment

7.6

Overall

8.0

Food

7.0

Comfort

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
4,273 reviews
Southwest
8.0
Very good
4,273 reviews

Boarding

8.2

Crew

8.6

Entertainment

7.6

Overall

8.0

Food

7.0

Comfort

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
7,973 reviews
Southwest
8.0
Very good
4,273 reviews

Boarding

8.2

Crew

8.6

Entertainment

7.6

Overall

8.0

Food

7.0

Comfort

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
4,273 reviews

Boarding

8.2

Crew

8.6

Entertainment

7.6

Overall

8.0

Food

7.0

Comfort

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
4,273 reviews

Boarding

8.2

Crew

8.6

Entertainment

7.6

Overall

8.0

Food

7.0

Comfort

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.
Sun Country Air
6.9
Okay
340 reviews
Southwest
8.0
Very good
4,273 reviews

Boarding

8.2

Crew

8.6

Entertainment

7.6

Overall

8.0

Food

7.0

Comfort

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 Illinois to Michigan. 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 Illinois to Michigan one-way?

    One-way options have recently been found by users for as low as $28 on Spirit Airlines. Other airlines that offer cheap prices include United Airlines from $46 and American Airlines from $48 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, April is the cheapest month in which you can book a flight from Illinois to Michigan (average of $257). 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

Browse thousands of different options on Cheapflights for your next trip

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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 5 airlines flying from Illinois to Michigan

Discover the top 5 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 July 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$37Average$68FlexibilityNo cancel feeOn-time65%
American AirlinesCheapest$97Average$333FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$97Average$377FlexibilityNo cancel feeOn-time69%
DeltaCheapest$104Average$364FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$118Average$257FlexibilityNo cancel feeOn-time63%

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