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$38+ 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 6/26. Fares are subject to change and may not be available on all flights or dates of travel.
DTW — ORD
may. 20 — may. 271
mar. 5/20
mar. 5/27
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 mayo 15, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

Priceline
3 stars

Round-trip from

$91
(American Airlines)

One-way from

$38
(FlightHub)

Popular in

December

Cheapest in

October

Average price

$304

Good round-trip deal

$114 or less

Good one-way deal

$60 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
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Highest demand for flights based on searches. 17% potential increase in price ($45 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($10 potential savings vs. average RT price).
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Average for round-trip flights in May 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 mayo 15, 2025.

This United Airlines deal was found by Cheapflights users on 5/14. 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.
mié. 6/1111:10 amDTW - ORD
Nonstop1h 31mUnited Airlines
jue. 6/122:20 pmORD - DTW
Nonstop1h 28mUnited Airlines
Deal found 5/14$114
This Southwest deal was found by Cheapflights users on 5/14. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 6/117:35 pmDTW - MDW
Nonstop1h 10mSouthwest
jue. 6/1210:55 pmMDW - DTW
Nonstop1h 10mSouthwest
Deal found 5/14$114
This Mytrip deal was found by Cheapflights users on 5/14. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 5/281:43 pmDTW - ORD
1 stop20h 12mSpirit Airlines
vie. 5/3010:00 amORD - DTW
1 stop20h 35mSpirit Airlines
Deal found 5/14$115
This Delta deal was found by Cheapflights users on 5/14. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 6/97:30 amDTW - ORD
Nonstop1h 19mDelta
mar. 6/107:05 amORD - DTW
Nonstop1h 25mDelta
Deal found 5/14$121
This Delta deal was found by Cheapflights users on 5/13. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 9/2012:15 pmDTW - MDW
Nonstop1h 17mDelta
mié. 9/249:30 amMDW - DTW
Nonstop1h 11mDelta
Deal found 5/13$121
This Kissandfly.com deal was found by Cheapflights users on 5/15. 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 Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 6/58:25 amORD - STL
1 stop11h 45mSouthern / Mokulele
lun. 6/95:15 pmSTL - ORD
1 stop14h 25mSouthern / Mokulele
Deal found 5/15$136
This United Airlines deal was found by Cheapflights users on 5/15. 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.
mié. 6/119:20 pmORD - STL
Nonstop1h 25mUnited Airlines
mié. 6/185:00 amSTL - ORD
Nonstop1h 30mUnited Airlines
Deal found 5/15$137
This Frontier deal was found by Cheapflights users on 5/15. 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.
dom. 6/296:20 amMDW - STL
1 stop7h 20mFrontier
sáb. 7/52:52 pmSTL - MDW
1 stop7h 43mFrontier
Deal found 5/15$144
This Frontier deal was found by Cheapflights users on 5/14. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 6/138:30 amDTW - ORD
1 stop15h 12mFrontier
vie. 6/202:10 pmORD - DTW
1 stop15h 46mFrontier
Deal found 5/14$144
This Frontier deal was found by Cheapflights users on 5/15. 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.
jue. 6/1212:18 pmDTW - MDW
1 stop12h 00mFrontier
jue. 8/72:44 pmMDW - DTW
1 stop8h 58mFrontier
Deal found 5/15$144
This Frontier deal was found by Cheapflights users on 5/15. 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.
jue. 6/55:08 pmORD - STL
1 stop6h 29mFrontier
lun. 6/95:35 pmSTL - ORD
1 stop6h 35mFrontier
Deal found 5/15$146
This Southwest deal was found by Cheapflights users on 5/15. 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.
mié. 6/1111:00 amMDW - STL
Nonstop1h 10mSouthwest
vie. 6/138:20 pmSTL - MDW
Nonstop1h 05mSouthwest
Deal found 5/15$150

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 mayo 15, 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

mié. 8/6

10:34 pm-11:51 pm

Nonstop1h 17m

Lambert-St Louis

mar. 8/12

6:06 am-7:30 am

Nonstop1h 24m

$91

ChicagoSt. Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

mié. 8/6

7:30 am-2:30 pm

1 stop7h 00m

Lambert-St Louis

mar. 8/12

6:25 am-12:45 pm

1 stop6h 20m

$97

DetroitChicago

DTW - ORD

DTWORD

Detroit Metropolitan Wayne County

mié. 6/11

11:10 am-11:41 am

Nonstop1h 31m

Chicago O'Hare Intl

jue. 6/12

2:20 pm-4:48 pm

Nonstop1h 28m

$114

DetroitChicago

DTW - MDW

DTWMDW

Detroit Metropolitan Wayne County

mié. 6/11

7:35 pm-7:45 pm

Nonstop1h 10m

Chicago Midway

jue. 6/12

10:55 pm-1:05 am

Nonstop1h 10m

$114

ChicagoSt. Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

mié. 6/11

9:20 pm-10:45 pm

Nonstop1h 25m

Lambert-St Louis

sáb. 6/14

8:05 am-9:30 am

Nonstop1h 25m

$114

DetroitChicago

DTW - ORD

DTWORD

Detroit Metropolitan Wayne County

mié. 5/28

1:43 pm-8:55 am

1 stop20h 12m

Chicago O'Hare Intl

vie. 5/30

10:00 am-7:35 am

1 stop20h 35m

$115

DetroitChicago

DTW - ORD

DTWORD

Detroit Metropolitan Wayne County

lun. 6/9

7:30 am-7:49 am

Nonstop1h 19m

Chicago O'Hare Intl

mar. 6/10

7:05 am-9:30 am

Nonstop1h 25m

$121

ChicagoSt. Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

jue. 6/5

8:25 am-8:10 pm

1 stop11h 45m

Lambert-St Louis

lun. 6/9

5:15 pm-7:40 am

1 stop14h 25m

$136

DetroitChicago

DTW - MDW

DTWMDW

Detroit Metropolitan Wayne County

lun. 6/9

6:24 pm-6:41 pm

Nonstop1h 17m

Chicago Midway

mar. 6/10

9:24 am-11:35 am

Nonstop1h 11m

$142

ChicagoSt. Louis

MDW - STL

MDWSTL

Chicago Midway

dom. 6/29

6:20 am-1:40 pm

1 stop7h 20m

Lambert-St Louis

sáb. 7/5

2:52 pm-10:35 pm

1 stop7h 43m

$144

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/15

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, 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 mayo 15, 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 mayo 15, 2025.

The most flights from USMI to USIL are scheduled on a Monday (85 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (74 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 mayo 15, 2025.
Peruse reviews from past customers who have flown with Alaska Airlines, Southwest 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.
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.2

Comfort

7.9

Overall

8.0

Entertainment

7.1

Crew

8.5

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.2

Comfort

7.9

Overall

8.0

Entertainment

7.1

Crew

8.5

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Southwest
8.0
Very good
4,291 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.2

Comfort

7.9

Overall

8.0

Entertainment

7.1

Crew

8.5

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,946 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.2

Comfort

7.9

Overall

8.0

Entertainment

7.1

Crew

8.5

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,731 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.2

Comfort

7.9

Overall

8.0

Entertainment

7.1

Crew

8.5

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.2

Comfort

7.9

Overall

8.0

Entertainment

7.1

Crew

8.5

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

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 $38. Southwest flights start at $49 while deals on United Airlines start at $68 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 mayo 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$38Average$81FlexibilityNo cancel feeOn-time65%
United AirlinesCheapest$97Average$319FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$97Average$379FlexibilityNo cancel feeOn-time71%
DeltaCheapest$97Average$238FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$108Average$260FlexibilityNo cancel feeOn-time63%

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