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$60+ 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 1/23. Fares are subject to change and may not be available on all flights or dates of travel.
DTW — ORD
Jan 20 — Jan 271
Tue 1/20
Tue 1/27
1 adult, Economy
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Cheap 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 December 21, 2025.

This Delta deal was found by Cheapflights users on 12/20. 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.
Wed 12/318:05 pmDTW - ORD
Nonstop1h 31mDelta
Thu 1/17:00 amORD - DTW
Nonstop1h 28mDelta
Deal found 12/20$175
This American Airlines deal was found by Cheapflights users on 12/20. 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 12/317:14 amORD - STL
Nonstop1h 34mAmerican Airlines
Tue 1/136:46 pmSTL - ORD
Nonstop1h 34mAmerican Airlines
Deal found 12/20$188
This Delta deal was found by Cheapflights users on 12/20. 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.
Wed 12/315:31 pmORD - STL
1 stop6h 07mDelta
Tue 1/1312:00 pmSTL - ORD
1 stop7h 35mDelta
Deal found 12/20$204
This American Airlines deal was found by Cheapflights users on 12/20. 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 12/316:39 pmDTW - ORD
Nonstop1h 53mAmerican Airlines
Thu 1/14:05 pmORD - DTW
1 stop5h 29mAmerican Airlines
Deal found 12/20$215
This American Airlines deal was found by Cheapflights users on 12/18. 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 12/312:57 pmORD - STL
Nonstop1h 26mAmerican Airlines
Thu 1/18:01 pmSTL - ORD
Nonstop1h 29mAmerican Airlines
Deal found 12/18$215
This American Airlines deal was found by Cheapflights users on 12/19. 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.
Fri 12/265:49 amFNT - ORD
Nonstop1h 26mAmerican Airlines
Fri 1/28:05 amORD - FNT
Nonstop1h 19mAmerican Airlines
Deal found 12/19$224
This American Airlines deal was found by Cheapflights users on 12/20. 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 12/3112:50 pmTVC - ORD
Nonstop1h 53mAmerican Airlines
Sat 1/35:56 pmORD - TVC
Nonstop1h 16mAmerican Airlines
Deal found 12/20$224
This Frontier deal was found by Cheapflights users on 12/18. 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.
Wed 12/3111:23 amORD - STL
1 stop11h 10mFrontier
Thu 1/110:42 amSTL - ORD
1 stop7h 51mFrontier
Deal found 12/18$233
This Southwest deal was found by Cheapflights users on 12/20. 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 12/317:00 pmDTW - MDW
Nonstop1h 10mSouthwest
Thu 1/110:00 amMDW - DTW
Nonstop1h 20mSouthwest
Deal found 12/20$235
This United Airlines deal was found by Cheapflights users on 12/19. 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 12/317:00 amMBS - ORD
Nonstop1h 51mUnited Airlines
Thu 1/15:50 pmORD - MBS
Nonstop1h 22mUnited Airlines
Deal found 12/19$239
This United Airlines deal was found by Cheapflights users on 12/19. 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 12/274:26 pmFNT - ORD
Nonstop1h 37mUnited Airlines
Tue 12/308:03 pmORD - FNT
Nonstop1h 27mUnited Airlines
Deal found 12/19$239
This Frontier deal was found by Cheapflights users on 12/20. 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.
Wed 12/3112:20 pmDTW - ORD
1 stop12h 52mFrontier
Mon 1/56:00 amORD - DTW
1 stop10h 11mFrontier
Deal found 12/20$242

Find flight deals from Michigan to Illinois

Keep the following information in mind while searching for Michigan to Illinois flight deals. Data was last updated December 21, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$132
(Kiwi.com)

One-way from

$60
(Trip.com)

Popular in

December

Cheapest in

April

Average price

$340

Good round-trip deal

$110 or less

Good one-way deal

$49 or less
Provider with most accurate pricing for Detroit (DTT)-Chicago (CHI) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Detroit (DTT)-Chicago (CHI) flights.
Search Deals
From Michigan to Illinois
Search Deals
One-way flight from Michigan to Illinois
Search Deals
Highest demand for flights based on searches. 15% potential increase in price ($43 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% 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 Michigan to Illinois.
Search Deals
Price to beat on a one-way flight from Michigan to Illinois.
Search Deals

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 December 21, 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

ORD - STL

ORDSTL

Chicago O'Hare Intl

Thu 1/22

11:51 am-11:33 pm

1 stop11h 42m

Lambert-St Louis

Mon 1/26

8:22 pm-1:58 pm

1 stop17h 36m

$146

ChicagoSt. Louis

MDW - STL

MDWSTL

Chicago Midway

Tue 1/13

7:45 pm-9:00 pm

Nonstop1h 15m

Lambert-St Louis

Wed 1/14

1:10 pm-2:15 pm

Nonstop1h 05m

$153

DetroitChicago

DTW - ORD

DTWORD

Detroit Metropolitan Wayne County

Tue 2/3

8:59 am-9:41 am

Nonstop1h 42m

Chicago O'Hare Intl

Tue 2/10

6:50 am-9:22 am

Nonstop1h 32m

$153

DetroitChicago

DTW - ORD

DTWORD

Detroit Metropolitan Wayne County

Thu 2/19

10:59 pm-9:22 am

1 stop11h 23m

Chicago O'Hare Intl

Mon 2/23

5:58 pm-7:41 am

1 stop12h 43m

$156

ChicagoSt. Louis

MDW - STL

MDWSTL

Chicago Midway

Sat 1/24

7:40 pm-8:55 pm

Nonstop1h 15m

Lambert-St Louis

Mon 1/26

6:05 am-7:15 am

Nonstop1h 10m

$157

DetroitChicago

DTW - MDW

DTWMDW

Detroit Metropolitan Wayne County

Sat 1/31

6:00 pm-6:40 pm

Nonstop1h 40m

Chicago Midway

Thu 2/5

9:45 am-11:55 am

Nonstop1h 10m

$157

DetroitChicago

DTW - MDW

DTWMDW

Detroit Metropolitan Wayne County

Sat 1/24

6:00 pm-6:40 pm

Nonstop1h 40m

Chicago Midway

Mon 1/26

7:45 pm-9:55 pm

Nonstop1h 10m

$157

DetroitChicago

DTW - MDW

DTWMDW

Detroit Metropolitan Wayne County

Sat 1/24

7:00 am-7:30 am

Nonstop1h 30m

Chicago Midway

Tue 1/27

5:15 pm-10:30 pm

1 stop4h 15m

$158

ChicagoSt. Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

Tue 1/13

1:20 pm-6:51 am

1 stop17h 31m

Lambert-St Louis

Wed 1/14

8:32 pm-11:22 am

2 stops14h 50m

$159

ChicagoSt. Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

Thu 1/15

5:15 am-10:34 pm

2 stops17h 19m

Lambert-St Louis

Mon 1/19

8:32 pm-6:27 pm

1 stop21h 55m

$160

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/21

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, November is the cheapest month in which you can book a flight from Michigan to Illinois (average of $53). Flying from Michigan to Illinois in July is currently the most expensive (average of $121). 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 December 21, 2025.

Unlike in the morning, when flights are generally more expensive, you can save up to 9% on flights from Michigan to Illinois by exploring options for tickets in the afternoon.

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

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

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

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 December 21, 2025.

The most flights from USMI to USIL are scheduled on a Saturday (66 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (25 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 December 21, 2025.
See what other customers who have flown with Denver Air Connection, Southwest, and Delta from Michigan to Illinois have to say. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Denver Air Connection
8.7
Very good

Overall

8.7

Boarding

8.7

Crew

9.4

Food

8.4

Entertainment

8.1

Comfort

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

Overall

8.7

Boarding

8.7

Crew

9.4

Food

8.4

Entertainment

8.1

Comfort

8.9
Southwest
8.0
Very good
4,254 reviews
Denver Air Connection
8.7
Very good

Overall

8.7

Boarding

8.7

Crew

9.4

Food

8.4

Entertainment

8.1

Comfort

8.9
Delta
7.9
Good
8,017 reviews
Denver Air Connection
8.7
Very good

Overall

8.7

Boarding

8.7

Crew

9.4

Food

8.4

Entertainment

8.1

Comfort

8.9
United Airlines
7.4
Good
9,101 reviews
Denver Air Connection
8.7
Very good

Overall

8.7

Boarding

8.7

Crew

9.4

Food

8.4

Entertainment

8.1

Comfort

8.9
American Airlines
7.2
Good
11,051 reviews
Denver Air Connection
8.7
Very good

Overall

8.7

Boarding

8.7

Crew

9.4

Food

8.4

Entertainment

8.1

Comfort

8.9

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 15m. Fly via Frontier, Southwest, or Delta to get the fastest option. The distance between Michigan and Illinois is about 251 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

    To fly one-way, consider booking your trip with Contour, which is currently one of the cheapest options available, starting at $33. Southwest flights start at $38 while deals on American Airlines start at $45 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, November is the cheapest month in which you can book a flight from Michigan to Illinois (average of $53). Flying from Michigan to Illinois in July is currently the most expensive (average of $121). 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 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 December 21, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$91Average$281FlexibilityNo cancel feeOn-time71%
DeltaCheapest$97Average$284FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$97Average$322FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$97Average$275FlexibilityNo cancel feeOn-time63%
Denver Air ConnectionCheapest$110Average$140FlexibilityNo cancel feeOn-timeN/A

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