$38 Find Cheap Flights from Michigan to Illinois

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Low seasonJanuary
High seasonAugust
Cheapest flight$38
Best time to beat the crowds with an average 2% drop in price.
Most popular time to fly and prices are also 15% lower on average.
Flight from Detroit to St. Louis

FAQs for booking flights from Michigan to Illinois

  • How does KAYAK find such low prices on flights from Michigan to Illinois?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Michigan to Illinois.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Michigan to Illinois?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Michigan to Illinois is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Michigan to Illinois?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from Michigan to Illinois with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Michigan to Illinois?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from Michigan to Illinois up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • Which is the cheapest airport to fly into in Illinois?

    Prices will differ depending on the departure airport, but generally, the cheapest airport to fly to in Illinois is Chicago Midway Airport (MDW), with an average flight price of $219.

  • What is the cheapest day to fly to Illinois?

    Based on KAYAK data, the cheapest day to fly to Illinois is Friday where round-trip tickets can be as cheap as $510. On the other hand, the most expensive day to fly is Monday, where round-trip prices are $795 on average.

  • What is the cheapest time of day to fly to Illinois?

    The cheapest time of day to fly to Illinois is generally at night, when round-trip flights cost $452 on average. Morning departures are around 37% cheaper than evening flights, on average. The most expensive time of day to fly to Illinois is generally in the afternoon, which is peak travel time and where the average cost of a ticket is $948.

  • What is the cheapest flight to Illinois?

    The cheapest ticket to Illinois from Michigan found in the last 72 hours was to Chicago O'Hare Intl Airport, at $147 round-trip. The most popular route is Kalamazoo (AZO) to Chicago O'Hare Intl Airport (ORD) and the cheapest round-trip airline ticket found on this route in the last 72 hours was $147.

  • What is the cheapest month to fly from Michigan to Illinois?

    The cheapest month for flights from Michigan to Illinois is August, when tickets cost $226 (return) on average. On the other hand, the most expensive months are March and January, when the average cost of round-trip tickets is $293 and $291 respectively.

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

    To get a below average price on the flight from Michigan to Illinois, you should book around 4 weeks before departure. For the absolute cheapest price, our data suggests you should book 8 weeks before departure.

  • How long is the flight to Illinois?

    An average nonstop flight from Michigan to Illinois takes 3h 53m, covering a distance of 259 miles. The shortest route is Muskegon (MKG) to Chicago O'Hare Intl Airport (ORD) with an average flight time of 0h 50m.

  • What are the most popular destinations in Illinois?

    Based on KAYAK flight searches, the most popular destination is Chicago (62% of total searches to Illinois). The next most popular destinations are St. Louis (33%) and Moline (2%). Searches for flights to Peoria (2%), to Evansville (1%) and to Springfield (0%) are also popular.

Top 5 airlines serving from Michigan to Illinois

 
Need help choosing which airline to fly with from Michigan to Illinois? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
SouthwestOverall score based on 4287 reviews
8.2Boarding
7.1Food
8.6Crew
8.0Comfort
7.6Entertainment
Airline reviews

Southwest is typically delayed, and it gets wearisome. It is no longer a discount airline and you get way less than you pay for when it comes to comfort and Ce.

6.0 GoodDavid, Jun 2025BWI - COS
Read more Southwest reviews

Southwest is typically delayed, and it gets wearisome. It is no longer a discount airline and you get way less than you pay for when it comes to comfort and Ce.

We sat on the plane on the tarmac for 4 hours.

I'm not a fan of Southwest's model. I don't like the herding style of boarding.

Flight crew and cabin crew were great. I had to rearrange flights because my original flight was 3hrs delayed for weather, the rub is the flight I moved to boarded on time then we sat at the gate for 2 hours because scheduling stole our first officer for another flight, TWICE. Then our actual FO was an hour delayed. To make it worse my original flight went from a 3 hour delay to departing 15min EARLY. Just poor scheduling operations all around.

Bring back peanuts Take our drink orders when were all seated, especially after you switch to assigned seating.

Staff was far less than helpful at all times. Departure and arrival times mean nothing to Southwest. Extremely disappointed, will never fly with them again, and I’ll be sure to share my experience with all.

It is southwest seat was ok. Not the most comfortable seat

I’ve always loved Southwest. No issues at all. I was flying standby and the gate agent was extremely friendly and helpful. Boarding was smooth and I was able to get a window seat in the emergency exit row. Crew was fantastic! They were very professional and accommodating. We had to divert from our destination due to weather but the flight crew kept everyone at ease and informed us of all pertinent information. Excellent flight

The price of the tickets isn't matching the flight experience. No matter how long the flight is, you're only getting pretzels. The flight attendants looked unkept and over it.

Plz don't take away free bags and free seating

Great overall. There was a bit of turbulence so they could only serve water because too much turbulence for the carts. Was glad they prioritized safety though

Excellent flight, the planes were newer, they did a nice job with boarding, great service overall.

Great service. Flight was delayed while we sat on the runway for a couple of hours. Weather related. Staff made is very bearable. The steward servicing the first class cabin was exceptional. Thank you! 💗

5 hours of delay that could've been much shorter if Delta had taken the 1 hour delay they imposed on the flight before boarding to run any of the plane checks required for flight to find the hydraulic issue that required nearly 3 hours to fix. $24 of meal credit buys a sandwich and a soft drink. Poor communication within the terminal about what gate we'd be re-boarding from and when we'd be re-boarding.

Amazing flight! I have never noticed the uniforms of the attendants before in twenty years of flying except today when one female had the most amazing dress on. It was beautifully designed and showed she was in charge. I never dreamed I would google who designed Delta uniforms . The ultimate compliment is when another woman admires your outfit. . I hope your designer puts it on the market

It would be nice if was given wires ear buds. Overall was a good experience was able to sleep on the plane

My flight was 6 pm 6/6. Every hour they delayed it again - air condition issues then no pilot then the crew had worked too many hours and cancelled the flight at 11 pm. Sent customers to NJ a 45 minutes uber ride to a hotel. Had to be back by 5 am for a 7 am flight and again no pilot etc with another three hours of delays.

The entertainment and wifi mostly didn't work on this flight.

Terrible entertainment system - kept freezing and audio kept cutting out. Snacks were mediocre at best for a 5 hour flight.

The check in and bag drop off for Sky Priority members is slow. The Clear security was also slow - a TSA issue.

It was fine, definitely older planes with no charging or anything. There’s no entertainment set up on board, but it is nice that they allow you to access the in flight entertainment from your phone without having to pay for the Wi-Fi and they do offer free texting.

I liked that the flight was nonstop from ORD to CIU for $200 round trip.

The schedule to Moline changed 5 times. The gate changed 6 times. That is a pathetic way to run an airline. No wonder that no one in our company flies on United Express to or from Moline. Changes happen most of the time. I learned my lesson on this trip…never again!

While the staff was pleasant and helpful, the following observations are for your awareness. There was some delay on the tarmac on take off and landing. The paid lunch/food offerings were limited. Entertainment was only available on WiFi at a cost.

The first flight was better in terms of the aircraft.

Smooth flight. Boarding was chaotic. Could not hear the gate agent over the intercom. People were lined up in the wrong lines. Groups one and two were told to board through line one and group 3 through line 2. All very confusing. Once in the air, the flight was smooth. There was no entertainment option on this aircraft, even though it was a larger aircraft.

Overall poor for me I paid extra for seats with leg room and my regional flights exit row seats have less leg room then the others that's money that could have been saved and on my final flight home the flights air was not operating it was unbearably hot in the cabin I will be contacting United and filing a DOT complaint

There's just no way to sit fully upright and comfortably in these seats. There needs to be 2 more inches of room, and that's not something that only one person on the flight needs - the whole flight needs 2 more inches of room. If that means you sell 6 less seats, so be it. It's too close for anyone. Forcing people to pay for "premium" economy just to get "barely enough space to breathe" isn't really an answer to that.

The crew were very nice. The Chocolate is good and v there’s no entertainment. Thanks

The crew were very nice. I would have appreciated a pillow for comfort. I had a special meal that was sloppy, but the salad was great. Thanks

Most miserable flight ever. We waited almost 2 hours on the runway because the flight was oversold. American offered $1200 credit. Then there was some nonsense about weight distribution. Ridiculous. No food for 8 plus hours on the flight. I will be writing a letter.

The flight was 2 hour delayed, otherwise everything was excellent. The delay was due to the hourly limit requirement so given that as a reason, I'm happy with the flight!

Not sure the logic of the boarding in Groups. I was loaded first on the aisle. Then the guy in the middle. Then the guy by the window. Constantly holding up the other people boarding behind them with us blocking the aisle and this happened in most of the other rows

To start, I’d like to say that every American Airline personnel I interacted with on the ground, especially flight crew, was very friendly and did their best to help me out. Despite this, however, my experience with the airline was an entire mess. The 7:19 PM flight was heavily delayed due to weather, and pushed to 10:30 AM the next morning. Because of this, I had to spend the night inside of the airport. At some point later in the night, I got an email saying that the flight had been canceled. I called the support number, and the representative on the other line told me that the flight was still on and that I didn’t need to rebook. The next morning, no one came to the gate to open the door for the crew until almost 11 AM. By this time the flight crew had been waiting for over an hour, and they had called management to get someone to open the door for them multiple times. Around 11:30, the gate screen had changed to a different flight. I ended up buying a last minute ticket with Southwest airline just to get to Chicago, because the next flight with American wasn’t until 7:19 pm that day. Now, earlier that morning my suitcase had been sent ahead of me to ORD. I went to baggage claim to ask them if I could have my suitcase forwarded to where I was staying. The representative at SDF baggage claim said they could and put the claim in for me. As I was going back through TSA, I got an email that the airline had found my suitcase, but the next step was to send it BACK to SDF. I called the airline support number again, and I made it clear that my suitcase needed to stay in Chicago and to not come back to SDF. The representative told me that they would hold my suitcase at ORD and that it wasn’t going to be forwarded anywhere. Once I got there, I found that they had loaded my suitcase onto a plane to send it back to SDF. Thankfully, I had gotten to the baggage claim counter in time for them to put in a request to bring my suitcase back up. My refund with the airline is processing already, but because of this entire experience and miscommunication at every turn of the way, I will not book with American Airlines in the future.

The plane was late and then sat on the runway for almost 45 minutes before taking off.

Crew professional. Easy bag drop off. On time. Good entertainment.

Everything was great. Boarding, early departure, early arrival, and deplaning were smooth. Smooth flight.

Per usual, flight status, staff courtesy and professionalism were excellent

Everything was on time, we arrived early, everything worked well.

The only thing is if Wi-Fi is available after you land and taxi to the gate. It takes forever to get to the gate, and having the Wi-Fi continue would be great to bide the time at least 5 minutes before you arrive at the entrance. That is my only comment; otherwise, everything was good.

Tell them to chose a better, less bumpy route :( my seat had no window all the way at the end 😔

Boarding east and ontime. Seat spacing was tight, and seats don’t recline.

While on the flight we had a delay and had to sit on the plane while maintenance fixed it. It’s ended up taking an hour and a half longer to leave than expected. I had an unruly passenger sitting behind me that vaped during the flight and was rude and loud for the majority of the flight.

Overall flight was good, the attendant at the desk was pretty rude to me and some other customers. It was my second time flying on my own and I was repeatedly told to use the app to find my seat assignment but the app would not work, in the end it took just a few seconds to print a physical copy, but I was given a lot of trouble over it.

Spirit is by far the worst airline to travel with, period. Seats are cardboard, flight attendants need anger management and if you ask for water, you’re basically a criminal. I don’t care how much it costs but I will travel with an airline who actually cares about their customers. Oh and one more thing, the next time your gate agent puts his foot on someone’s baggage's scale, I hope they get what’s coming next, a viral video of your scams. You suck Spirit, do better.

I mean, it’s Spirit. But it was frustrating to have our flight canceled, get bumped to a later flight, and then Spirit was unwilling to check our bag until 4 hours before our flight… tell us we could not sit in the waiting area’s chairs… and really negative experience getting checked in and dropping the bag.

Not having it be changed after we bought the flight tickets from a direct flight getting in at a reasonable time to a connecting flight red eye of 9 hours, so that we would lose our 35 dollars in nonrefundable insurance would've been great! Our country really does need low-cost carrier options, but this type of "service" ain't it. Fortunately, had a little better success with them flying to and from San Juan PR last month at least.

The flight attendant spilled ice all down my leg and all over my suede boots and didn’t even apologize or anything. They just gave me a look like “what?!” Incredibly rude and dismissive. I saw them roll their eyes at other guests and even once yell at a lady with a baby.

terrible service, no room for a dog underfoot, a broken chair that is impossible to sit on and all this costs a lot of money

My flight was good from my wheelchair assist to the plan & my exit.

Book cheap flights from Michigan to Illinois

Recent round-trip flight deals

7/24Thu
nonstopSpirit Airlines
1h 32mDTW-STL
7/27Sun
nonstopSpirit Airlines
1h 29mSTL-DTW
$58
7/3Thu
nonstopSpirit Airlines
1h 31mDTW-STL
7/7Mon
nonstopSpirit Airlines
1h 28mSTL-DTW
$60
8/14Thu
nonstopAmerican Airlines
1h 14mGRR-ORD
8/18Mon
nonstopAmerican Airlines
1h 03mORD-GRR
$97
8/19Tue
nonstopAmerican Airlines
1h 25mORD-STL
8/20Wed
nonstopAmerican Airlines
1h 24mSTL-ORD
$97
8/5Tue
nonstopDelta
1h 16mDTW-ORD
8/19Tue
nonstopDelta
1h 15mORD-DTW
$97
8/19Tue
nonstopSouthwest
1h 15mMDW-STL
8/20Wed
nonstopSouthwest
1h 05mSTL-MDW
$97
8/6Wed
nonstopSouthwest
1h 10mDTW-MDW
8/21Thu
nonstopSouthwest
1h 10mMDW-DTW
$97
9/27Sat
nonstopDelta
1h 26mDTW-ORD
9/29Mon
nonstopDelta
1h 27mORD-DTW
$124
10/9Thu
nonstopUnited Airlines
1h 30mDTW-ORD
10/13Mon
nonstopUnited Airlines
1h 36mORD-DTW
$157
7/11Fri
nonstopUnited Airlines
1h 25mMBS-ORD
7/12Sat
nonstopUnited Airlines
1h 17mORD-MBS
$179

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Recent one-way flight deals

7/31Thu
nonstopSpirit Airlines
1h 32mDTW-STL
$38
8/18Mon
nonstopSpirit Airlines
1h 49mDTW-STL
$39
8/11Mon
nonstopAmerican Airlines
1h 12mGRR-ORD
$49
8/7Thu
nonstopAmerican Airlines
1h 26mORD-STL
$49
10/21Tue
nonstopDelta
1h 26mDTW-ORD
$49
8/5Tue
nonstopSouthwest
1h 15mMDW-STL
$49
9/22Mon
nonstopSouthwest
1h 10mDTW-MDW
$49
7/18Fri
nonstopDelta
1h 38mDTW-STL
$61
9/1Mon
nonstopUnited Airlines
1h 24mORD-STL
$62
8/5Tue
nonstopUnited Airlines
1h 24mORD-STL
$63

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Last minute flights from Michigan to Illinois

Last minute flight, train and bus deals

6/16Mon
nonstopSpirit Airlines
1h 31mDTW-STL
7/3Thu
nonstopSpirit Airlines
1h 28mSTL-DTW
$164
6/17Tue
multi-stopSpirit Airlines
5h 23mDTW-ORD
9/4Thu
multi-stopSpirit Airlines
10h 17mORD-DTW
$168
6/17Tue
multi-stopDelta
4h 53mTVC-ORD
6/21Sat
multi-stopDelta
5h 51mORD-TVC
$249
6/14Sat
nonstopAmerican Airlines
1h 19mFNT-ORD
6/17Tue
nonstopAmerican Airlines
1h 17mORD-FNT
$259
6/17Tue
multi-stopDelta
5h 54mMBS-ORD
6/21Sat
multi-stopDelta
5h 38mORD-MBS
$279
6/17Tue
nonstopAmerican Airlines
1h 20mTVC-ORD
6/21Sat
nonstopAmerican Airlines
1h 16mORD-TVC
$289
6/17Tue
multi-stopSouthwest
3h 35mDTW-MDW
9/4Thu
nonstopSouthwest
1h 10mMDW-DTW
$308
6/17Tue
multi-stopSouthwest
3h 35mDTW-MDW
9/4Thu
multi-stopSouthwest
6h 15mMDW-DTW
$318
6/17Tue
nonstopUnited Airlines
1h 25mMBS-ORD
6/21Sat
nonstopUnited Airlines
1h 17mORD-MBS
$319
6/17Tue
nonstopUnited Airlines
1h 25mFNT-ORD
6/21Sat
nonstopUnited Airlines
1h 22mORD-FNT
$319

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Everything you need to know for your flight to Illinois

Cabin class types available on flights to Michigan

Cabin classes available on flights to Michigan. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.

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