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$60+ 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 2/3. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — DTW
Feb 5 — Feb 121
Thu 2/5
Thu 2/12
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 January 6, 2026.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$141
(Kiwi.com)

One-way from

$60
(Mytrip)

Popular in

February

Cheapest in

May

Average price

$342

Good round-trip deal

$100 or less

Good one-way deal

$44 or less
Provider with most accurate pricing for Chicago (CHI)-Detroit (DTT) flight deals.
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Provider most trusted by Cheapflights users for Chicago (CHI)-Detroit (DTT) flights.
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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. 10% potential increase in price ($32 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($10 potential savings vs. average RT price).
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Average for round-trip flights in January 2026
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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 January 6, 2026.

This Kiwi.com deal was found by Cheapflights users on 1/6. 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.
Tue 2/35:42 pmSTL - ORD
1 stop28h 02mMultiple Airlines
Tue 2/1012:44 pmORD - STL
1 stop9h 43mMultiple Airlines
Deal found 1/6$135
This Kiwi.com deal was found by Cheapflights users on 1/6. 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.
Fri 2/68:22 pmSTL - DTW
1 stop12h 58mMultiple Airlines
Tue 2/108:30 amDTW - STL
1 stop30h 28mMultiple Airlines
Deal found 1/6$141
This Kiwi.com deal was found by Cheapflights users on 1/5. 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 2/43:46 pmSTL - ORD
1 stop26h 45mFrontier
Wed 2/118:30 amORD - STL
1 stop13h 57mFrontier
Deal found 1/5$141
This Kiwi.com deal was found by Cheapflights users on 1/4. 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.
Sat 2/142:51 pmSTL - DTW
1 stop8h 04mFrontier
Wed 2/188:30 amDTW - STL
1 stop8h 23mFrontier
Deal found 1/4$144
This Kiwi.com deal was found by Cheapflights users on 1/4. 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.
Sat 2/142:51 pmSTL - DTW
1 stop8h 04mFrontier
Tue 2/1710:32 amDTW - STL
1 stop30h 21mFrontier
Deal found 1/4$146
This United Airlines deal was found by Cheapflights users on 1/4. 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 1/287:09 pmDEC - ORD
Nonstop1h 16mUnited Airlines
Thu 2/264:50 pmORD - DEC
Nonstop1h 04mUnited Airlines
Deal found 1/4$149
This Kiwi.com deal was found by Cheapflights users on 1/5. 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.
Mon 1/265:42 pmSTL - ORD
1 stop19h 31mMultiple Airlines
Wed 1/2810:48 amORD - STL
1 stop12h 45mMultiple Airlines
Deal found 1/5$152
This United Airlines deal was found by Cheapflights users on 1/6. 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 3/287:15 pmDEC - ORD
Nonstop1h 10mUnited Airlines
Sun 4/57:45 amORD - DEC
Nonstop1h 13mUnited Airlines
Deal found 1/6$159
This Frontier deal was found by Cheapflights users on 1/6. 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 1/295:42 pmSTL - ORD
1 stop16h 53mFrontier
Mon 2/211:51 amORD - STL
1 stop11h 42mFrontier
Deal found 1/6$160
This Kiwi.com deal was found by Cheapflights users on 1/4. 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.
Sat 2/142:51 pmSTL - DTW
1 stop8h 04mMultiple Airlines
Thu 2/1910:59 pmDTW - STL
2 stops34h 57mMultiple Airlines
Deal found 1/4$162
This Kiwi.com deal was found by Cheapflights users on 1/5. 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.
Fri 1/3011:18 amSTL - DTW
1 stop7h 28mFrontier
Mon 2/23:14 pmDTW - STL
1 stop9h 19mFrontier
Deal found 1/5$167
This Kiwi.com deal was found by Cheapflights users on 1/5. 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.
Fri 1/305:42 pmSTL - DTW
2 stops26h 21mMultiple Airlines
Mon 2/23:14 pmDTW - STL
1 stop9h 19mMultiple Airlines
Deal found 1/5$168

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 January 6, 2026.
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

DecaturChicago

DEC - ORD

DECORD

Decatur Arpt

Sat 5/9

6:55 pm-8:00 pm

Nonstop1h 05m

Chicago O'Hare Intl

Mon 5/11

7:45 am-8:46 am

Nonstop1h 01m

$149

DecaturChicago

DEC - ORD

DECORD

Decatur Arpt

Sat 6/13

6:55 pm-8:00 pm

Nonstop1h 05m

Chicago O'Hare Intl

Sat 6/20

4:50 pm-5:51 pm

Nonstop1h 01m

$149

DecaturChicago

DEC - ORD

DECORD

Decatur Arpt

Wed 1/28

7:09 pm-8:25 pm

Nonstop1h 16m

Chicago O'Hare Intl

Thu 2/26

4:50 pm-5:54 pm

Nonstop1h 04m

$149

DecaturChicago

DEC - ORD

DECORD

Decatur Arpt

Tue 3/24

7:15 pm-8:25 pm

Nonstop1h 10m

Chicago O'Hare Intl

Sun 3/29

4:54 pm-6:02 pm

Nonstop1h 08m

$149

DecaturChicago

DEC - ORD

DECORD

Decatur Arpt

Fri 1/30

7:09 pm-8:25 pm

Nonstop1h 16m

Chicago O'Hare Intl

Sun 2/1

7:45 am-9:05 am

Nonstop1h 20m

$159

DecaturChicago

DEC - ORD

DECORD

Decatur Arpt

Wed 1/28

9:49 am-11:05 am

Nonstop1h 16m

Chicago O'Hare Intl

Wed 2/11

4:52 pm-6:01 pm

Nonstop1h 09m

$159

DecaturChicago

DEC - ORD

DECORD

Decatur Arpt

Thu 1/22

9:49 am-11:05 am

Nonstop1h 16m

Chicago O'Hare Intl

Sat 1/31

4:52 pm-6:01 pm

Nonstop1h 09m

$159

St. LouisChicago

STL - ORD

STLORD

Lambert-St Louis

Wed 2/4

3:46 pm-6:31 pm

1 stop26h 45m

Chicago O'Hare Intl

Wed 2/11

6:02 pm-11:59 pm

2 stops29h 57m

$169

ChicagoDetroit

MDW - DTW

MDWDTW

Chicago Midway

Fri 2/27

7:53 pm-8:32 am

1 stop11h 39m

Detroit Metropolitan Wayne County

Sun 3/1

2:35 pm-10:30 pm

1 stop8h 55m

$173

ChicagoDetroit

ORD - DTW

ORDDTW

Chicago O'Hare Intl

Sat 1/17

6:50 am-9:22 am

Nonstop1h 32m

Detroit Metropolitan Wayne County

Sun 1/18

12:40 pm-1:08 pm

Nonstop1h 28m

$175

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/5

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 $78). Flying from Illinois to Michigan in December is currently the most expensive (average of $139). 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 January 6, 2026.

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 32% 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 January 3, 2026.

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 January 6, 2026.

The most flights from USIL to USMI are scheduled on a Monday (64 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (6 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 January 6, 2026.
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

Entertainment

8.1

Food

8.4

Crew

9.4

Boarding

8.7

Overall

8.7

Comfort

8.9
Denver Air Connection
8.7
Very good
Denver Air Connection
8.7
Very good

Entertainment

8.1

Food

8.4

Crew

9.4

Boarding

8.7

Overall

8.7

Comfort

8.9
Southwest
8.0
Very good
4,249 reviews
Denver Air Connection
8.7
Very good

Entertainment

8.1

Food

8.4

Crew

9.4

Boarding

8.7

Overall

8.7

Comfort

8.9
Delta
7.9
Good
8,021 reviews
Denver Air Connection
8.7
Very good

Entertainment

8.1

Food

8.4

Crew

9.4

Boarding

8.7

Overall

8.7

Comfort

8.9
United Airlines
7.4
Good
9,138 reviews
Denver Air Connection
8.7
Very good

Entertainment

8.1

Food

8.4

Crew

9.4

Boarding

8.7

Overall

8.7

Comfort

8.9
American Airlines
7.2
Good
11,088 reviews
Denver Air Connection
8.7
Very good

Entertainment

8.1

Food

8.4

Crew

9.4

Boarding

8.7

Overall

8.7

Comfort

8.9

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 $149, United Airlines can have you in Michigan from Illinois in 1h 05m. The distance between Illinois and Michigan is about 156 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 American 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 $78). Flying from Illinois to Michigan in December is currently the most expensive (average of $139). 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 January 6, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$91Average$316FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$91Average$311FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$97Average$335FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$97Average$257FlexibilityNo cancel feeOn-time63%
FrontierCheapest$144Average$178FlexibilityNo cancel feeOn-time62%

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