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$59+ 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 1/6. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — DTW
Jan 13 — Jan 201
Tue 1/13
Tue 1/20
1 adult, Economy
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Cheap 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 December 14, 2025.

This United Airlines deal was found by Cheapflights users on 12/12. 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 12/277:09 pmDEC - ORD
Nonstop1h 16mUnited Airlines
Wed 12/317:45 amORD - DEC
Nonstop1h 20mUnited Airlines
Deal found 12/12$149
This United Airlines deal was found by Cheapflights users on 12/14. 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.
Mon 12/297:09 pmDEC - ORD
Nonstop1h 16mUnited Airlines
Fri 1/24:50 pmORD - DEC
Nonstop1h 09mUnited Airlines
Deal found 12/14$159
This United Airlines deal was found by Cheapflights users on 12/13. 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.
Wed 12/247:55 pmORD - DTW
Nonstop1h 35mUnited Airlines
Mon 2/29:00 amDTW - ORD
Nonstop1h 31mUnited Airlines
Deal found 12/13$173
This United Airlines deal was found by Cheapflights users on 12/14. 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.
Sun 12/217:09 pmDEC - ORD
Nonstop1h 16mUnited Airlines
Sun 12/284:50 pmORD - DEC
Nonstop1h 09mUnited Airlines
Deal found 12/14$174
This United Airlines deal was found by Cheapflights users on 12/12. 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.
Sun 12/287:09 pmDEC - ORD
Nonstop1h 16mUnited Airlines
Wed 12/317:45 amORD - DEC
Nonstop1h 20mUnited Airlines
Deal found 12/12$191
This United Airlines deal was found by Cheapflights users on 12/12. 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 12/137:08 pmDEC - ORD
Nonstop1h 11mUnited Airlines
Sun 12/144:50 pmORD - DEC
Nonstop1h 02mUnited Airlines
Deal found 12/12$199
This American Airlines deal was found by Cheapflights users on 12/12. 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 12/279:29 pmORD - TVC
Nonstop1h 18mAmerican Airlines
Wed 12/3112:50 pmTVC - ORD
Nonstop1h 53mAmerican Airlines
Deal found 12/12$209
This American Airlines deal was found by Cheapflights users on 12/13. 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.
Sun 12/217:47 pmMLI - ORD
Nonstop1h 25mAmerican Airlines
Mon 1/56:05 pmORD - MLI
Nonstop1h 12mAmerican Airlines
Deal found 12/13$209
This Frontier deal was found by Cheapflights users on 12/11. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/185:25 amORD - DTW
1 stop4h 55mFrontier
Thu 1/110:49 amDTW - ORD
1 stop8h 44mFrontier
Deal found 12/11$212
This Expedia deal was found by Cheapflights users on 12/11. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/1810:42 amSTL - DTW
1 stop6h 27mFrontier
Sun 12/2110:01 pmDTW - STL
1 stop13h 01mFrontier
Deal found 12/11$212
This American Airlines deal was found by Cheapflights users on 12/13. 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.
Wed 12/241:30 pmORD - DTW
Nonstop1h 30mAmerican Airlines
Mon 2/25:03 pmDTW - ORD
1 stop7h 24mAmerican Airlines
Deal found 12/13$233
This Kiwi.com deal was found by Cheapflights users on 12/13. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/242:15 pmORD - DTW
2 stops20h 05mMultiple Airlines
Mon 2/212:11 pmDTW - ORD
1 stop21h 07mMultiple Airlines
Deal found 12/13$235

Find flight deals from Illinois to Michigan

Keep the following information in mind while searching for Illinois to Michigan flight deals. Data was last updated December 14, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$117
(Southwest)

One-way from

$59
(Delta)

Popular in

February

Cheapest in

May

Average price

$276

Good round-trip deal

$100 or less

Good one-way deal

$49 or less
Provider with most accurate pricing for Chicago (CHI)-Detroit (DTT) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Chicago (CHI)-Detroit (DTT) flights.
Search Deals
From Illinois to Michigan
Search Deals
One-way flight from Illinois to Michigan
Search Deals
Highest demand for flights based on searches. 10% potential increase in price ($32 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($10 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals
Price to beat on a round-trip flight from Illinois to Michigan.
Search Deals
Price to beat on a one-way flight from Illinois to Michigan.
Search Deals

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 December 14, 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. LouisChicago

STL - MDW

STLMDW

Lambert-St Louis

Tue 3/3

6:50 am-1:55 pm

2 stops7h 05m

Chicago Midway

Wed 3/4

1:50 pm-3:00 pm

Nonstop1h 10m

$132

St. LouisChicago

STL - ORD

STLORD

Lambert-St Louis

Tue 3/3

6:20 am-1:00 pm

1 stop6h 40m

Chicago O'Hare Intl

Wed 3/4

1:45 pm-6:45 pm

1 stop5h 00m

$137

ChicagoGrand Rapids

ORD - GRR

ORDGRR

Chicago O'Hare Intl

Tue 1/20

3:50 pm-5:57 pm

Nonstop1h 07m

Grand Rapids Gerald R. Ford Intl

Sat 1/24

6:32 pm-6:55 pm

Nonstop1h 23m

$144

DecaturChicago

DEC - ORD

DECORD

Decatur Arpt

Sat 12/27

7:09 pm-8:25 pm

Nonstop1h 16m

Chicago O'Hare Intl

Wed 12/31

7:45 am-9:05 am

Nonstop1h 20m

$149

DecaturChicago

DEC - ORD

DECORD

Decatur Arpt

Sun 1/11

7:09 pm-8:25 pm

Nonstop1h 16m

Chicago O'Hare Intl

Mon 1/19

4:52 pm-6:01 pm

Nonstop1h 09m

$149

St. LouisChicago

STL - ORD

STLORD

Lambert-St Louis

Mon 1/12

5:11 pm-12:08 pm

2 stops18h 57m

Chicago O'Hare Intl

Tue 1/20

2:53 pm-6:51 am

1 stop15h 58m

$152

ChicagoDetroit

ORD - DTW

ORDDTW

Chicago O'Hare Intl

Sat 1/10

4:38 pm-12:19 am

1 stop6h 41m

Detroit Metropolitan Wayne County

Mon 1/12

10:07 pm-9:12 am

1 stop12h 05m

$153

St. LouisDetroit

STL - DTW

STLDTW

Lambert-St Louis

Sat 1/17

3:43 pm-11:24 am

1 stop18h 41m

Detroit Metropolitan Wayne County

Tue 1/20

2:36 pm-6:51 am

1 stop17h 15m

$154

St. LouisChicago

STL - MDW

STLMDW

Lambert-St Louis

Thu 1/8

5:11 pm-11:09 pm

1 stop29h 58m

Chicago Midway

Mon 1/12

4:31 pm-10:34 pm

1 stop30h 03m

$155

ChicagoDetroit

ORD - DTW

ORDDTW

Chicago O'Hare Intl

Thu 1/15

5:15 am-5:04 pm

1 stop10h 49m

Detroit Metropolitan Wayne County

Sun 1/18

12:59 pm-1:13 pm

2 stops25h 14m

$159

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/11

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, October is the cheapest month in which you can book a flight from Illinois to Michigan (average of $80). Flying from Illinois to Michigan in February is currently the most expensive (average of $137). 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 December 14, 2025.

One of the essential ways to save on airfare from Illinois to Michigan is to remain as flexible as possible. Flights that are at noon tend to be the most expensive. A flight in the evening could potentially save you up to 35% on airfare.

What is the cheapest day to fly from Illinois to Michigan?

Use this chart to determine the cheapest time to fly round-trip from Illinois to Michigan. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Illinois to Michigan flight should consider departing on Saturday evenings when fares are most often at their lowest. Tuesday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

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 December 14, 2025.

The most flights from USIL to USMI are scheduled on a Monday (68 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (13 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 December 14, 2025.
Read through reviews of airlines operating flights from Illinois to Michigan, such as Denver Air Connection, Southwest, and Delta. 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.
Denver Air Connection
8.7
Very good

Crew

9.4

Food

8.4

Boarding

8.7

Comfort

8.9

Overall

8.7

Entertainment

8.1
Denver Air Connection
8.7
Very good
Denver Air Connection
8.7
Very good

Crew

9.4

Food

8.4

Boarding

8.7

Comfort

8.9

Overall

8.7

Entertainment

8.1
Southwest
7.9
Good
4,250 reviews
Denver Air Connection
8.7
Very good

Crew

9.4

Food

8.4

Boarding

8.7

Comfort

8.9

Overall

8.7

Entertainment

8.1
Delta
7.9
Good
8,006 reviews
Denver Air Connection
8.7
Very good

Crew

9.4

Food

8.4

Boarding

8.7

Comfort

8.9

Overall

8.7

Entertainment

8.1
United Airlines
7.4
Good
9,092 reviews
Denver Air Connection
8.7
Very good

Crew

9.4

Food

8.4

Boarding

8.7

Comfort

8.9

Overall

8.7

Entertainment

8.1
American Airlines
7.2
Good
11,051 reviews
Denver Air Connection
8.7
Very good

Crew

9.4

Food

8.4

Boarding

8.7

Comfort

8.9

Overall

8.7

Entertainment

8.1

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 $144, Southwest can have you in Michigan from Illinois in 1h 07m. The distance between Illinois and Michigan is about 136 mi. This flight may include one or multiple stops.

  • 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 $38 on Southwest. Other airlines that offer cheap prices include Contour from $41 and United Airlines from $45 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, October is the cheapest month in which you can book a flight from Illinois to Michigan (average of $80). Flying from Illinois to Michigan in February is currently the most expensive (average of $137). 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 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 December 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$91Average$257FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$91Average$294FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$97Average$337FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$97Average$257FlexibilityNo cancel feeOn-time63%
FrontierCheapest$144Average$178FlexibilityNo cancel feeOn-time62%

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