$64+ 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 2/21. Fares are subject to change and may not be available on all flights or dates of travel.
DTW — ORD
Feb 20 — Feb 271
1 adult, Economy
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Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Michigan to Illinois
Cheapest flights from Michigan to IllinoisExplore 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 January 21, 2026.
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 January 21, 2026.
This Kiwi.com deal was found by Cheapflights users on 1/20. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/212:35 pm
DTW
- ORD
1 stop9h 04m
Multiple Airlines
Tue 2/246:02 pm
ORD
- DTW
1 stop18h 28m
Multiple Airlines
Deal found 1/20![Multiple Airlines logo]()
$126
This Frontier deal was found by Cheapflights users on 1/19. 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.
Sat 2/216:25 pm
DTW
- STL
1 stop6h 34m
Frontier
Wed 2/258:17 pm
STL
- DTW
1 stop10h 50m
Frontier
Deal found 1/19![Frontier logo]()
$128
This Kiwi.com deal was found by Cheapflights users on 1/19. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/32:35 pm
DTW
- MDW
1 stop5h 32m
Multiple Airlines
Wed 3/47:15 am
MDW
- DTW
1 stop7h 42m
Multiple Airlines
Deal found 1/19![Multiple Airlines logo]()
$129
This Kiwi.com deal was found by Cheapflights users on 1/20. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/246:02 pm
ORD
- STL
1 stop12h 49m
Frontier
Thu 2/2610:11 pm
STL
- ORD
1 stop19h 15m
Frontier
Deal found 1/20![Frontier logo]()
$129
This Kiwi.com deal was found by Cheapflights users on 1/20. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/176:02 pm
DTW
- STL
1 stop13h 49m
Multiple Airlines
Fri 2/208:20 pm
STL
- DTW
1 stop11h 12m
Multiple Airlines
Deal found 1/20![Multiple Airlines logo]()
$132
This Kiwi.com deal was found by Cheapflights users on 1/18. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/186:02 pm
DTW
- MDW
1 stop18h 25m
Multiple Airlines
Wed 2/257:00 am
MDW
- DTW
1 stop7h 57m
Multiple Airlines
Deal found 1/18![Multiple Airlines logo]()
$132
This Kiwi.com deal was found by Cheapflights users on 1/21. 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 2/1110:07 pm
DTW
- ORD
1 stop12h 15m
Multiple Airlines
Wed 2/186:02 pm
ORD
- DTW
1 stop13h 05m
Multiple Airlines
Deal found 1/21![Multiple Airlines logo]()
$133
This Kiwi.com deal was found by Cheapflights users on 1/20. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/176:02 pm
DTW
- ORD
1 stop17h 37m
Multiple Airlines
Tue 2/246:02 pm
ORD
- DTW
1 stop16h 15m
Multiple Airlines
Deal found 1/20![Multiple Airlines logo]()
$134
This Kiwi.com deal was found by Cheapflights users on 1/19. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/199:05 am
MDW
- STL
1 stop21h 46m
Frontier
Mon 2/238:22 pm
STL
- MDW
1 stop22h 45m
Frontier
Deal found 1/19![Frontier logo]()
$135
This Kiwi.com deal was found by Cheapflights users on 1/21. 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.
Thu 2/2610:59 pm
DTW
- ORD
1 stop15h 04m
Multiple Airlines
Mon 3/25:05 am
ORD
- DTW
1 stop15h 00m
Multiple Airlines
Deal found 1/21![Multiple Airlines logo]()
$136
This Kiwi.com deal was found by Cheapflights users on 1/20. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/194:27 pm
DTW
- ORD
1 stop7h 12m
Multiple Airlines
Thu 2/2612:05 pm
ORD
- DTW
1 stop11h 04m
Multiple Airlines
Deal found 1/20![Multiple Airlines logo]()
$137
This Booking.com deal was found by Cheapflights users on 1/20. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/216:25 pm
DTW
- STL
1 stop6h 34m
Frontier
Tue 2/243:49 pm
STL
- DTW
1 stop16h 08m
Frontier
Deal found 1/20![Frontier logo]()
$139
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 January 21, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | Expedia 3 stars |
Round-trip from | $126 (Kiwi.com) |
One-way from | $64 (Frontier) |
Popular in | June |
Cheapest in | April |
Average price | $242 |
Good round-trip deal | $88 or less |
Good one-way deal | $48 or less |
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 January 21, 2026.
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
DetroitChicago
DTW - MDW
DTWMDW
Detroit Metropolitan Wayne County
Wed 2/11
8:25 am-8:52 am
Nonstop1h 27m
Chicago Midway
Tue 3/31
9:35 am-11:43 am
Nonstop1h 08m
$143
DetroitChicago
DTW - MDW
DTWMDW
Detroit Metropolitan Wayne County
Tue 3/3
6:50 am-7:15 am
Nonstop1h 25m
Chicago Midway
Wed 3/4
7:45 pm-9:55 pm
Nonstop1h 10m
$143
DetroitChicago
DTW - MDW
DTWMDW
Detroit Metropolitan Wayne County
Wed 2/11
12:25 pm-12:46 pm
Nonstop1h 21m
Chicago Midway
Wed 4/1
9:35 am-11:43 am
Nonstop1h 08m
$143
ChicagoSt. Louis
MDW - STL
MDWSTL
Chicago Midway
Thu 2/5
5:01 pm-6:51 am
1 stop13h 50m
Lambert-St Louis
Mon 2/9
8:22 pm-7:07 pm
1 stop22h 45m
$154
DetroitChicago
DTW - ORD
DTWORD
Detroit Metropolitan Wayne County
Mon 2/16
6:26 pm-6:59 pm
Nonstop1h 33m
Chicago O'Hare Intl
Mon 2/23
10:35 am-12:54 pm
Nonstop1h 19m
$157
DetroitChicago
DTW - ORD
DTWORD
Detroit Metropolitan Wayne County
Mon 2/23
6:26 pm-6:59 pm
Nonstop1h 33m
Chicago O'Hare Intl
Tue 3/24
9:50 am-12:09 pm
Nonstop1h 19m
$157
DetroitChicago
DTW - ORD
DTWORD
Detroit Metropolitan Wayne County
Thu 2/12
8:15 pm-8:44 pm
Nonstop1h 29m
Chicago O'Hare Intl
Wed 4/1
1:57 pm-4:19 pm
Nonstop1h 22m
$157
DetroitChicago
DTW - ORD
DTWORD
Detroit Metropolitan Wayne County
Wed 2/18
8:15 pm-8:44 pm
Nonstop1h 29m
Chicago O'Hare Intl
Sat 2/21
6:30 am-9:02 am
Nonstop1h 32m
$157
DetroitChicago
DTW - ORD
DTWORD
Detroit Metropolitan Wayne County
Thu 2/12
4:13 pm-4:41 pm
Nonstop1h 28m
Chicago O'Hare Intl
Mon 2/16
2:05 pm-4:30 pm
Nonstop1h 25m
$157
DetroitChicago
DTW - ORD
DTWORD
Detroit Metropolitan Wayne County
Mon 2/16
12:54 pm-1:20 pm
Nonstop1h 26m
Chicago O'Hare Intl
Thu 2/19
10:35 am-12:54 pm
Nonstop1h 19m
$157
Showing 1-10 of 60 results
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 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 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 January 21, 2026.
Unlike in the evening, when flights are generally more expensive, you can save up to 11% on flights from Michigan to Illinois by exploring options for tickets at noon.
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 January 17, 2026.
Travelers seeking maximum savings on their Michigan to Illinois flight should consider departing on Wednesday afternoons when fares are most often at their lowest. Sunday at noon 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 January 21, 2026.
The most flights from USMI to USIL are scheduled on a Monday (66 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (33 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 January 21, 2026.
See what other customers who have flown with Southwest, Denver Air Connection, 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.
Crew
8.6
Comfort
8.0
Boarding
8.1
Overall
8.0
Entertainment
7.5
Food
7.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Crew
8.6
Comfort
8.0
Boarding
8.1
Overall
8.0
Entertainment
7.5
Food
7.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Denver Air Connection
Crew
8.6
Comfort
8.0
Boarding
8.1
Overall
8.0
Entertainment
7.5
Food
7.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Crew
8.6
Comfort
8.0
Boarding
8.1
Overall
8.0
Entertainment
7.5
Food
7.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Crew
8.6
Comfort
8.0
Boarding
8.1
Overall
8.0
Entertainment
7.5
Food
7.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Crew
8.6
Comfort
8.0
Boarding
8.1
Overall
8.0
Entertainment
7.5
Food
7.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
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.
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.
Top 4 airlines flying from Michigan to Illinois
Discover the top 4 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 January 21, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$91 | Average$282 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$92 | Average$285 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$94 | Average$307 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$97 | Average$275 | FlexibilityNo cancel fee | On-time63% |