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$48+ 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 3/25. Fares are subject to change and may not be available on all flights or dates of travel.
DTW — ORD
Feb 25 — Mar 41
Tue 2/25
Tue 3/4
1 adult, Economy
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Cheap flight deals from Michigan to Illinois

Keep the following information in mind while searching for Michigan to Illinois flight deals. Data was last updated February 20, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$108
(Mytrip)

One-way from

$48
(Mytrip)

Popular in

December

Cheapest in

October

Average price

$234

Good round-trip deal

$103 or less

Good one-way deal

$69 or less
Provider with most accurate pricing for Detroit (DTT)-Chicago (CHI) flight deals.
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Provider most trusted by Cheapflights users for Detroit (DTT)-Chicago (CHI) flights.
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From Michigan to Illinois
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One-way flight from Michigan to Illinois
Search Deals
Highest demand for flights based on searches. 22% potential increase in price ($59 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($11 potential savings vs. average RT price).
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Average for round-trip flights in February 2025
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Price to beat on a round-trip flight from Michigan to Illinois.
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Price to beat on a one-way flight from Michigan to Illinois.
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Find 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 February 20, 2025.

This Mytrip deal was found by Cheapflights users on 2/19. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/188:44 pmDTW - ORD
1 stop17h 09mSpirit Airlines
Wed 4/27:45 pmORD - DTW
1 stop14h 11mSpirit Airlines
Deal found 2/19$108
This Frontier deal was found by Cheapflights users on 2/18. 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.
Thu 4/310:19 amMDW - STL
1 stop13h 27mFrontier
Mon 4/76:38 pmSTL - MDW
1 stop10h 45mFrontier
Deal found 2/18$110
This Frontier deal was found by Cheapflights users on 2/20. 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.
Mon 4/710:44 amDTW - MDW
1 stop12h 57mFrontier
Wed 4/91:05 pmMDW - DTW
1 stop6h 35mFrontier
Deal found 2/20$110
This Frontier deal was found by Cheapflights users on 2/19. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/39:20 amORD - STL
1 stop14h 26mFrontier
Mon 4/76:38 pmSTL - ORD
1 stop10h 27mFrontier
Deal found 2/19$110
This KAYAK deal was found by Cheapflights users on 2/20. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/25:50 pmDTW - MDW
Nonstop1h 12mDelta
Thu 4/39:23 amMDW - DTW
Nonstop1h 12mDelta
Deal found 2/20$116
This American Airlines deal was found by Cheapflights users on 2/20. 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.
Tue 4/12:31 pmGRR - ORD
Nonstop1h 12mAmerican Airlines
Wed 4/212:10 pmORD - GRR
Nonstop0h 56mAmerican Airlines
Deal found 2/20$117
This Southwest deal was found by Cheapflights users on 2/20. 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.
Thu 3/61:15 pmMDW - STL
Nonstop1h 10mSouthwest
Mon 3/108:35 pmSTL - MDW
Nonstop1h 10mSouthwest
Deal found 2/20$117
This Delta deal was found by Cheapflights users on 2/19. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/33:50 pmDTW - ORD
Nonstop1h 21mDelta
Mon 4/75:00 pmORD - DTW
Nonstop1h 17mDelta
Deal found 2/19$117
This American Airlines deal was found by Cheapflights users on 2/20. 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.
Thu 3/68:57 pmORD - STL
Nonstop1h 17mAmerican Airlines
Mon 3/105:55 amSTL - ORD
Nonstop1h 20mAmerican Airlines
Deal found 2/20$117
This United Airlines deal was found by Cheapflights users on 2/19. 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 3/1912:50 pmGRR - ORD
Nonstop1h 17mUnited Airlines
Wed 3/268:58 amORD - GRR
Nonstop1h 11mUnited Airlines
Deal found 2/19$118
This Southwest deal was found by Cheapflights users on 2/20. 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.
Thu 3/66:05 amDTW - MDW
1 stop6h 40mSouthwest
Mon 3/103:00 pmMDW - DTW
Nonstop1h 05mSouthwest
Deal found 2/20$127
This Frontier deal was found by Cheapflights users on 2/19. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/62:43 pmDTW - ORD
1 stop10h 40mFrontier
Wed 3/128:43 amORD - DTW
1 stop7h 13mFrontier
Deal found 2/19$130

Find flights from Michigan to Illinois within your budget

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 February 20, 2025.

Fly from

Michigan

Fly to

Illinois

Route

Depart

Return

Price

DetroitChicago

DTW - ORD

DTWORD

Detroit Metropolitan Wayne County

Tue 3/18

8:44 pm-12:53 pm

1 stop17h 09m

Chicago O'Hare Intl

Wed 4/2

7:45 pm-10:56 am

1 stop14h 11m

$108

ChicagoSt. Louis

MDW - STL

MDWSTL

Chicago Midway

Thu 4/3

10:19 am-11:46 pm

1 stop13h 27m

Lambert-St Louis

Mon 4/7

6:38 pm-5:23 am

1 stop10h 45m

$110

DetroitChicago

DTW - MDW

DTWMDW

Detroit Metropolitan Wayne County

Mon 4/7

10:44 am-10:41 pm

1 stop12h 57m

Chicago Midway

Wed 4/9

1:05 pm-8:40 pm

1 stop6h 35m

$110

ChicagoSt. Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

Thu 4/3

9:20 am-11:46 pm

1 stop14h 26m

Lambert-St Louis

Mon 4/7

6:38 pm-5:05 am

1 stop10h 27m

$110

DetroitChicago

DTW - MDW

DTWMDW

Detroit Metropolitan Wayne County

Wed 4/2

5:50 pm-6:02 pm

Nonstop1h 12m

Chicago Midway

Thu 4/3

9:23 am-11:35 am

Nonstop1h 12m

$116

Grand RapidsChicago

GRR - ORD

GRRORD

Grand Rapids Gerald R. Ford Intl

Tue 4/1

2:31 pm-2:43 pm

Nonstop1h 12m

Chicago O'Hare Intl

Wed 4/2

12:10 pm-2:06 pm

Nonstop0h 56m

$117

ChicagoSt. Louis

MDW - STL

MDWSTL

Chicago Midway

Thu 3/6

1:15 pm-2:25 pm

Nonstop1h 10m

Lambert-St Louis

Mon 3/10

8:35 pm-9:45 pm

Nonstop1h 10m

$117

DetroitChicago

DTW - ORD

DTWORD

Detroit Metropolitan Wayne County

Thu 4/3

3:50 pm-4:11 pm

Nonstop1h 21m

Chicago O'Hare Intl

Mon 4/7

5:00 pm-7:17 pm

Nonstop1h 17m

$117

ChicagoSt. Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

Thu 3/6

8:57 pm-10:14 pm

Nonstop1h 17m

Lambert-St Louis

Mon 3/10

5:55 am-7:15 am

Nonstop1h 20m

$117

Grand RapidsChicago

GRR - ORD

GRRORD

Grand Rapids Gerald R. Ford Intl

Wed 3/19

12:50 pm-1:07 pm

Nonstop1h 17m

Chicago O'Hare Intl

Wed 3/26

8:58 am-11:09 am

Nonstop1h 11m

$118

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/20

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.

Travel insights for flights from Michigan to Illinois

Get recent, data-driven insights about flights from Michigan to Illinois including ideal travel times, pricing trends, and more.

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

Currently, August is the cheapest month in which you can book a flight from Michigan to Illinois (average of $245). Flying from Michigan to Illinois in March is currently the most expensive (average of $321). 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 February 20, 2025.

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

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 February 20, 2025.

The most flights from USMI to USIL are scheduled on a Thursday (74 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (21 on average).

Rainfall in Illinois by month

Plan your trip to Illinois by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Illinois ranges from 1.7 - 4.9 inches per month. August is typically the wettest month, when rainfall can reach 4.9 in. January is typically the driest time to visit Illinois when rainfall is around 1.7 in.

Temperature in Illinois by month

Plan your trip to Illinois by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Illinois, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 23.0 F).

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 February 20, 2025.
Peruse reviews from past customers who have flown with Southwest, Alaska Airlines and Delta from Michigan to Illinois to help guide your decision. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
4,411 reviews

Entertainment

7.6

Overall

8.1

Food

7.1

Crew

8.7

Boarding

8.2

Comfort

8.1

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Southwest
8.1
Very good
4,411 reviews
Southwest
8.1
Very good
4,411 reviews

Entertainment

7.6

Overall

8.1

Food

7.1

Crew

8.7

Boarding

8.2

Comfort

8.1

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Alaska Airlines
8.0
Very good
9,692 reviews
Southwest
8.1
Very good
4,411 reviews

Entertainment

7.6

Overall

8.1

Food

7.1

Crew

8.7

Boarding

8.2

Comfort

8.1

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Delta
8.0
Very good
8,220 reviews
Southwest
8.1
Very good
4,411 reviews

Entertainment

7.6

Overall

8.1

Food

7.1

Crew

8.7

Boarding

8.2

Comfort

8.1

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

United Airlines
7.4
Good
8,766 reviews
Southwest
8.1
Very good
4,411 reviews

Entertainment

7.6

Overall

8.1

Food

7.1

Crew

8.7

Boarding

8.2

Comfort

8.1

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

American Airlines
7.2
Good
10,000 reviews
Southwest
8.1
Very good
4,411 reviews

Entertainment

7.6

Overall

8.1

Food

7.1

Crew

8.7

Boarding

8.2

Comfort

8.1

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

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.

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

    To fly one-way, consider booking your trip with Spirit Airlines, which is currently one of the cheapest options available, starting at $48. Frontier flights start at $55 while deals on Delta start at $58 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, August is the cheapest month in which you can book a flight from Michigan to Illinois (average of $245). Flying from Michigan to Illinois in March is currently the most expensive (average of $321). 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 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 February 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$38Average$81FlexibilityNo cancel feeOn-time65%
DeltaCheapest$96Average$242FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$97Average$311FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$103Average$371FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$128Average$225FlexibilityNo cancel feeOn-time63%
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