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Cheap flights from Michigan to Illinois from $73

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Michigan to Illinois departing on 8/21. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Michigan to Illinois

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
6:10 am - 5:37 pm
DTW
-
STL
12h 27m
1 stop
Frontier Logo
6:34 pm - 12:40 am
STL
-
DTW
29h 06m
1 stop
$145Frontier
Thu, Jul 30 - Sun, Aug 2
Frontier Logo
6:00 am - 5:22 pm
DTW
-
STL
12h 22m
1 stop
Frontier Logo
6:17 pm - 1:04 am
STL
-
DTW
5h 47m
1 stop
$146Frontier
Fri, Aug 21 - Sun, Aug 23
United Airlines Logo
5:15 am - 5:33 am
GRR
-
ORD
1h 18mnonstop
United Airlines Logo
7:45 am - 10:02 am
ORD
-
GRR
1h 17mnonstop
$157United Airlines
Tue, Aug 4 - Tue, Aug 11
United Airlines Logo
2:10 pm - 2:15 pm
GRR
-
ORD
1h 05mnonstop
United Airlines Logo
10:43 am - 12:42 pm
ORD
-
GRR
0h 59mnonstop
$167United Airlines
Thu, Dec 10 - Sat, Dec 12
American Airlines Logo
7:23 am - 8:01 am
GRR
-
ORD
1h 38mnonstop
American Airlines Logo
6:58 am - 9:10 am
ORD
-
GRR
1h 12mnonstop
$168American Airlines
Sat, Aug 8 - Mon, Aug 10
Delta Logo
5:30 am - 10:42 am
GRR
-
ORD
6h 12m
1 stop
Delta Logo
5:20 pm - 11:55 pm
ORD
-
GRR
5h 35m
1 stop
$177Delta
Tue, Aug 4 - Tue, Aug 11
Delta Logo
4:00 pm - 8:30 pm
GRR
-
ORD
5h 30m
1 stop
Delta Logo
5:20 pm - 11:55 pm
ORD
-
GRR
5h 35m
1 stop
$187Delta
Sat, Aug 8 - Mon, Aug 10
American Airlines Logo
7:54 pm - 8:37 pm
GRR
-
ORD
1h 43mnonstop
American Airlines Logo
6:59 am - 9:11 am
ORD
-
GRR
1h 12mnonstop
$218American Airlines
Wed, Jul 29 - Fri, Jul 31
Southwest Logo
8:55 am - 9:10 am
DTW
-
MDW
1h 15mnonstop
Southwest Logo
6:20 pm - 8:30 pm
MDW
-
DTW
1h 10mnonstop
$240Southwest
Wed, Jul 29 - Wed, Aug 5
Southwest Logo
5:30 am - 11:30 am
GRR
-
STL
7h 00m
1 stop
Southwest Logo
3:05 pm - 10:50 pm
STL
-
GRR
6h 45m
2 stops
$274Southwest
Tue, Jul 28 - Tue, Aug 4

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United Airlines flights from Michigan to Illinois

Our best United Airlines deals on Michigan to Illinois flight tickets
United Airlines
Aug 4
GRR5:15 amGrand Rapids Gerald R. Ford Intl
1h 18m
ORD5:33 amChicago O'Hare Intl
Aug 11
ORD7:45 amChicago O'Hare Intl
1h 17m
GRR10:02 amGrand Rapids Gerald R. Ford Intl
$157
United Airlines
Dec 10
GRR2:10 pmGrand Rapids Gerald R. Ford Intl
1h 05m
ORD2:15 pmChicago O'Hare Intl
Dec 12
ORD10:43 amChicago O'Hare Intl
0h 59m
GRR12:42 pmGrand Rapids Gerald R. Ford Intl
$167
United Airlines
Oct 27
GRR10:13 amGrand Rapids Gerald R. Ford Intl
1h 24m
ORD10:37 amChicago O'Hare Intl
Oct 28
ORD12:40 pmChicago O'Hare Intl
1h 13m
GRR2:53 pmGrand Rapids Gerald R. Ford Intl
$227

JetBlue flights from Michigan to Illinois

Our best JetBlue deals on Michigan to Illinois flight tickets
JetBlue
Sep 19
DTW5:30 pmDetroit Metropolitan Wayne County
5h 36m
1 stop
ORD10:06 pmChicago O'Hare Intl
Sep 21
ORD6:30 amChicago O'Hare Intl
9h 02m
1 stop
DTW4:32 pmDetroit Metropolitan Wayne County
$201
JetBlue
Sep 1
DTW1:15 pmDetroit Metropolitan Wayne County
7h 11m
1 stop
ORD7:26 pmChicago O'Hare Intl
Sep 2
ORD11:01 amChicago O'Hare Intl
5h 48m
1 stop
DTW5:49 pmDetroit Metropolitan Wayne County
$203
JetBlue
Sep 18
DTW5:30 pmDetroit Metropolitan Wayne County
5h 36m
1 stop
ORD10:06 pmChicago O'Hare Intl
Sep 26
ORD6:30 amChicago O'Hare Intl
9h 02m
1 stop
DTW4:32 pmDetroit Metropolitan Wayne County
$229

momondo 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, momondo users made 832,500 searches. Data last updated July 2, 2026.
Use the filters below to find and compare flights from Michigan to Illinois that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

DetroitSt. Louis

DTW - STL

DTWSTL

Detroit Metropolitan Wayne County

Thu 7/30

6:10 am-5:37 pm

1 stop12h 27m

Lambert-St Louis

Sun 8/2

6:34 pm-12:40 am

1 stop29h 06m

$145

DetroitSt. Louis

DTW - STL

DTWSTL

Detroit Metropolitan Wayne County

Fri 8/21

6:00 am-5:22 pm

1 stop12h 22m

Lambert-St Louis

Sun 8/23

6:17 pm-1:04 am

1 stop5h 47m

$146

Grand RapidsChicago

GRR - ORD

GRRORD

Grand Rapids Gerald R. Ford Intl

Tue 8/4

5:15 am-5:33 am

Nonstop1h 18m

Chicago O'Hare Intl

Tue 8/11

7:45 am-10:02 am

Nonstop1h 17m

$157
Quickest round-trip

Grand RapidsChicago

GRR - ORD

GRRORD

Grand Rapids Gerald R. Ford Intl

Thu 12/10

2:10 pm-2:15 pm

Nonstop1h 05m

Chicago O'Hare Intl

Sat 12/12

10:43 am-12:42 pm

Nonstop0h 59m

$167

Grand RapidsChicago

GRR - ORD

GRRORD

Grand Rapids Gerald R. Ford Intl

Sat 8/8

7:23 am-8:01 am

Nonstop1h 38m

Chicago O'Hare Intl

Mon 8/10

6:58 am-9:10 am

Nonstop1h 12m

$168

Grand RapidsChicago

GRR - ORD

GRRORD

Grand Rapids Gerald R. Ford Intl

Tue 8/4

5:30 am-10:42 am

1 stop6h 12m

Chicago O'Hare Intl

Tue 8/11

5:20 pm-11:55 pm

1 stop5h 35m

$177

Grand RapidsChicago

GRR - ORD

GRRORD

Grand Rapids Gerald R. Ford Intl

Sat 8/8

4:00 pm-8:30 pm

1 stop5h 30m

Chicago O'Hare Intl

Mon 8/10

5:20 pm-11:55 pm

1 stop5h 35m

$187

Grand RapidsChicago

GRR - ORD

GRRORD

Grand Rapids Gerald R. Ford Intl

Wed 7/29

7:54 pm-8:37 pm

Nonstop1h 43m

Chicago O'Hare Intl

Fri 7/31

6:59 am-9:11 am

Nonstop1h 12m

$218

DetroitChicago

DTW - MDW

DTWMDW

Detroit Metropolitan Wayne County

Wed 7/29

8:55 am-9:10 am

Nonstop1h 15m

Chicago Midway

Wed 8/5

6:20 pm-8:30 pm

Nonstop1h 10m

$240

Grand RapidsSt. Louis

GRR - STL

GRRSTL

Grand Rapids Gerald R. Ford Intl

Tue 7/28

5:30 am-11:30 am

1 stop7h 00m

Lambert-St Louis

Tue 8/4

3:05 pm-10:50 pm

2 stops6h 45m

$274

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Illinois from

How to get the cheapest flight ticket from Michigan to Illinois

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Illinois?

The cheapest month to fly to Illinois from Michigan is in September. Flight prices, which tend to average around $45, are often lower during this time because this is during the off-season. If you aren’t able to travel to Illinois during the month of September, then flying in November is also cheap. Prices for this month can be found on momondo for an average of $48.

What is the cheapest day to depart on your flight to Illinois?

The cheapest day to depart from Michigan to Illinois is on a Friday when prices can be found for as low as $509. Flights from Michigan to Illinois on a Sunday will generally be more expensive and average around $711. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Illinois?

Our most recent data shows that the best time of day to fly to Illinois is in the morning. Flights from Michigan to Illinois during this time can be as low as $515. Flights at noon are often more expensive with an average ticket price of $937.

What is the cheapest Michigan to Illinois flight route?

Fly from Detroit Metropolitan Wayne County to Chicago Midway for the best Michigan - Illinois flight prices

How far in advance should I book a flight from Michigan to Illinois?

You are more likely to see cheaper flights to Illinois from Michigan when booking weeks ahead of your departure date. In general, you can expect to find flights to Illinois for around $305 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Illinois from Michigan for as low as $111 on momondo.

What cabin class options are available on Michigan to Illinois flights?

There are 4 cabin classes available to choose from on Michigan to Illinois flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Michigan to Illinois flights?

No. A direct flight is the cheapest option for a flight between Michigan to Illinois.

Cheap Michigan to Illinois flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Michigan to Illinois

Best Price Found

$60

Fastest flight time

0h 50m

Direct flights

Every day

Airports in Illinois

98 airports
The best one-way flight to Illinois from Michigan in the past 72 hours is $60. The best round-trip flight deal from Michigan to Illinois found on momondo in the last 72 hours is $118.
The fastest flight from Michigan to Illinois takes 0h 50m
Direct flights go from Michigan to Illinois every day.
There are 98 airports in Illinois. From Michigan there are direct flights to Chicago O'Hare Intl (ORD), Chicago Midway (MDW), Lambert-St Louis (STL).
Search flight deals

Frequently asked questions about flying from Michigan to Illinois

  • When did momondo last update prices for flights from Michigan to Illinois?

    Prices for flights from Michigan to Illinois were last updated today.

  • How many operators does momondo search for flights from Michigan to Illinois?

  • How old do you have to be to fly from Michigan to Illinois?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Michigan to Illinois.

  • What documentation or ID do you need to fly to Illinois?

    The necessary travel and health documents for your Illinois trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from Michigan to Illinois?

Best airlines flying from Michigan to Illinois

Compare and see reviews for airlines that fly from Michigan to Illinois with momondo
Airline
Rating
Free Cancellation
Price
American AirlinesPriceFrom $91Free CancellationRating
7.1
11,769 reviews
Search American Airlines flights
SouthwestPriceFrom $97Free CancellationRating
7.9
4,249 reviews
Search Southwest flights
DeltaPriceFrom $98Free CancellationRating
7.8
8,452 reviews
Search Delta flights
United AirlinesPriceFrom $110Free CancellationRating
7.4
9,926 reviews
Search United Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Michigan to Illinois?

It is quick and easy to find Michigan to Illinois flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Illinois that suits you.

Can I find flights from Michigan to Illinois with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Illinois from Michigan with this policy.

How can momondo help me find flights from Michigan to Illinois?

momondo helps you find the best flight between Michigan and Illinois by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Michigan to Illinois right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Michigan to Illinois flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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Find better results for your trip to Illinois

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