$49+ 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 5/6. Fares are subject to change and may not be available on all flights or dates of travel.
DTW — ORD
May 15 — May 221
Round-trip
1 adult, Economy
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Find cheap flights from Michigan to Illinois with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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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 April 15, 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 April 15, 2026.
This Kiwi.com deal was found by Cheapflights users on 4/13. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/136:05 pm
DTW
- STL
1 stop23h 49m
Frontier
Wed 5/205:27 pm
STL
- DTW
1 stop6h 12m
Frontier
Deal found 4/13![Frontier logo]()
$127
This Southwest deal was found by Cheapflights users on 4/15. 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.
Wed 5/66:10 am
DTW
- MDW
2 stops10h 35m
Southwest
Tue 5/123:00 pm
MDW
- DTW
1 stop5h 35m
Southwest
Deal found 4/15![Southwest logo]()
$128
This Kiwi.com deal was found by Cheapflights users on 4/14. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/126:50 am
DTW
- STL
1 stop27h 05m
Frontier
Tue 5/196:33 pm
STL
- DTW
1 stop21h 47m
Frontier
Deal found 4/14![Frontier logo]()
$132
This Southwest deal was found by Cheapflights users on 4/14. 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.
Tue 5/126:10 am
DTW
- MDW
2 stops10h 35m
Southwest
Tue 5/1910:10 am
MDW
- DTW
2 stops7h 10m
Southwest
Deal found 4/14![Southwest logo]()
$133
This Kiwi.com deal was found by Cheapflights users on 4/10. 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.
Fri 6/56:05 pm
DTW
- STL
1 stop15h 50m
Frontier
Mon 6/85:27 pm
STL
- DTW
1 stop23h 32m
Frontier
Deal found 4/10![Frontier logo]()
$136
This Expedia deal was found by Cheapflights users on 4/12. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/187:55 am
DTW
- STL
1 stop12h 28m
Frontier
Wed 5/205:27 pm
STL
- DTW
1 stop6h 12m
Frontier
Deal found 4/12![Frontier logo]()
$140
This Expedia deal was found by Cheapflights users on 4/13. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/410:19 am
DTW
- ORD
1 stop13h 47m
Frontier
Wed 5/69:00 am
ORD
- DTW
1 stop7h 20m
Frontier
Deal found 4/13![Frontier logo]()
$140
This Frontier deal was found by Cheapflights users on 4/10. 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.
Fri 5/11:42 pm
DTW
- MDW
1 stop9h 44m
Frontier
Tue 5/56:00 am
MDW
- DTW
1 stop5h 36m
Frontier
Deal found 4/10![Frontier logo]()
$140
This Kiwi.com deal was found by Cheapflights users on 4/10. 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.
Fri 5/86:05 pm
DTW
- STL
1 stop15h 50m
Frontier
Mon 5/115:27 pm
STL
- DTW
1 stop18h 09m
Frontier
Deal found 4/10![Frontier logo]()
$141
This Kiwi.com deal was found by Cheapflights users on 4/11. 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.
Fri 5/18:49 pm
DTW
- STL
1 stop11h 01m
Frontier
Mon 5/48:23 pm
STL
- DTW
1 stop15h 13m
Frontier
Deal found 4/11![Frontier logo]()
$144
This American Airlines deal was found by Cheapflights users on 4/13. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/115:00 am
DTW
- ORD
Nonstop1h 23m
American Airlines
Tue 5/126:45 am
ORD
- DTW
Nonstop1h 28m
American Airlines
Deal found 4/13![American Airlines logo]()
$144
This Southwest deal was found by Cheapflights users on 4/12. 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.
Mon 5/48:30 pm
DTW
- MDW
Nonstop1h 15m
Southwest
Tue 5/56:05 pm
MDW
- DTW
Nonstop1h 10m
Southwest
Deal found 4/12![Southwest logo]()
$144
Best flights from Michigan to IllinoisDiscover carefully curated flight deals from Michigan to Illinois that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 15, 2026.
Discover carefully curated flight deals from Michigan to Illinois that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 15, 2026.
This Southwest deal was found by Cheapflights users on 4/13. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/111:00 pm
DTW
- MDW
Nonstop1h 10m
Southwest
Tue 5/123:00 pm
MDW
- DTW
1 stop5h 35m
Southwest
Deal found 4/13![Southwest logo]()
$154
This Delta deal was found by Cheapflights users on 4/10. 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.
Wed 5/133:38 pm
MBS
- ORD
1 stop3h 27m
Delta
Sat 5/167:00 am
ORD
- MBS
1 stop3h 11m
Delta
Deal found 4/10![Delta logo]()
$157
This United Airlines deal was found by Cheapflights users on 4/10. 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 6/36:00 am
GRR
- ORD
Nonstop1h 17m
United Airlines
Wed 6/109:45 pm
ORD
- GRR
Nonstop1h 12m
United Airlines
Deal found 4/10![United Airlines logo]()
$157
This Frontier deal was found by Cheapflights users on 4/10. 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 8/312:35 pm
DTW
- STL
1 stop12h 39m
Frontier
Wed 8/55:33 pm
STL
- DTW
1 stop6h 09m
Frontier
Deal found 4/10![Frontier logo]()
$230
This American Airlines deal was found by Cheapflights users on 4/10. 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.
Sat 5/23:30 pm
DTW
- ORD
1 stop4h 52m
American Airlines
Mon 5/48:49 pm
ORD
- DTW
Nonstop1h 36m
American Airlines
Deal found 4/10![American Airlines logo]()
$235
This Delta deal was found by Cheapflights users on 4/14. 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.
Fri 5/86:13 pm
MBS
- ORD
1 stop3h 01m
Delta
Sun 5/106:24 am
ORD
- MBS
2 stops7h 34m
Delta
Deal found 4/14![Delta logo]()
$162
This Delta deal was found by Cheapflights users on 4/14. 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.
Sun 5/315:30 am
GRR
- ORD
1 stop4h 15m
Delta
Mon 6/111:09 am
ORD
- GRR
1 stop4h 55m
Delta
Deal found 4/14![Delta logo]()
$167
This Southwest deal was found by Cheapflights users on 4/11. 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.
Sat 5/24:05 pm
DTW
- MDW
1 stop5h 35m
Southwest
Mon 5/47:05 pm
MDW
- DTW
Nonstop1h 05m
Southwest
Deal found 4/11![Southwest logo]()
$185
This Southwest deal was found by Cheapflights users on 4/10. 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.
Wed 5/2710:15 am
MDW
- STL
Nonstop1h 15m
Southwest
Fri 5/295:40 am
STL
- MDW
Nonstop1h 10m
Southwest
Deal found 4/10![Southwest logo]()
$187
This United Airlines deal was found by Cheapflights users on 4/11. 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.
Sat 5/211:15 am
DTW
- ORD
Nonstop1h 36m
United Airlines
Wed 5/64:29 pm
ORD
- DTW
Nonstop1h 31m
United Airlines
Deal found 4/11![United Airlines logo]()
$214
This Delta deal was found by Cheapflights users on 4/10. 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.
Wed 6/35:45 pm
GRR
- ORD
1 stop3h 29m
Delta
Wed 6/108:52 am
ORD
- GRR
1 stop4h 16m
Delta
Deal found 4/10![Delta logo]()
$177
This Southwest deal was found by Cheapflights users on 4/12. 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 5/711:40 am
MDW
- STL
Nonstop1h 15m
Southwest
Mon 5/115:40 am
STL
- MDW
Nonstop1h 10m
Southwest
Deal found 4/12![Southwest logo]()
$191
This American Airlines deal was found by Cheapflights users on 4/10. 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.
Fri 5/1512:59 pm
FNT
- ORD
Nonstop1h 34m
American Airlines
Sun 5/179:09 pm
ORD
- FNT
Nonstop1h 17m
American Airlines
Deal found 4/10![American Airlines logo]()
$239
This Delta deal was found by Cheapflights users on 4/10. 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.
Mon 5/115:19 pm
ORD
- STL
1 stop3h 50m
Delta
Tue 5/126:21 am
STL
- ORD
2 stops6h 40m
Delta
Deal found 4/10![Delta logo]()
$189
This Southwest deal was found by Cheapflights users on 4/12. 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.
Sat 5/912:45 pm
MDW
- STL
Nonstop1h 15m
Southwest
Sat 5/96:55 pm
STL
- MDW
Nonstop1h 10m
Southwest
Deal found 4/12![Southwest logo]()
$191
This United Airlines deal was found by Cheapflights users on 4/10. 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 5/132:14 pm
MBS
- ORD
Nonstop1h 30m
United Airlines
Sat 5/1611:15 am
ORD
- MBS
Nonstop1h 16m
United Airlines
Deal found 4/10![United Airlines logo]()
$239
This American Airlines deal was found by Cheapflights users on 4/10. 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.
Fri 6/195:30 am
FNT
- ORD
Nonstop1h 26m
American Airlines
Sun 6/2110:27 pm
ORD
- FNT
Nonstop1h 16m
American Airlines
Deal found 4/10![American Airlines logo]()
$239
This Southwest deal was found by Cheapflights users on 4/10. 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.
Sat 5/29:15 am
MDW
- STL
Nonstop1h 15m
Southwest
Mon 5/47:20 am
STL
- MDW
Nonstop1h 10m
Southwest
Deal found 4/10![Southwest logo]()
$191
This Delta deal was found by Cheapflights users on 4/11. 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.
Sat 5/167:45 pm
DTW
- ORD
Nonstop1h 29m
Delta
Mon 5/187:00 pm
ORD
- DTW
Nonstop1h 29m
Delta
Deal found 4/11![Delta logo]()
$191
This United Airlines deal was found by Cheapflights users on 4/15. 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.
Fri 5/88:10 pm
MBS
- ORD
Nonstop1h 30m
United Airlines
Tue 5/1211:15 am
ORD
- MBS
Nonstop1h 16m
United Airlines
Deal found 4/15![United Airlines logo]()
$239
This American Airlines deal was found by Cheapflights users on 4/14. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/115:32 pm
FNT
- ORD
Nonstop1h 43m
American Airlines
Tue 7/142:37 pm
ORD
- FNT
Nonstop1h 25m
American Airlines
Deal found 4/14![American Airlines logo]()
$239
This Delta deal was found by Cheapflights users on 4/13. 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.
Thu 5/288:15 am
DTW
- ORD
Nonstop1h 30m
Delta
Thu 6/47:00 am
ORD
- DTW
Nonstop1h 29m
Delta
Deal found 4/13![Delta logo]()
$191
This United Airlines deal was found by Cheapflights users on 4/15. 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.
Thu 5/72:14 pm
MBS
- ORD
Nonstop1h 30m
United Airlines
Mon 5/1111:15 am
ORD
- MBS
Nonstop1h 16m
United Airlines
Deal found 4/15![United Airlines logo]()
$239
This Southwest deal was found by Cheapflights users on 4/11. 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.
Wed 5/206:10 am
DTW
- ORD
1 stop7h 40m
Southwest
Tue 5/262:40 pm
ORD
- DTW
1 stop5h 55m
Southwest
Deal found 4/11![Southwest logo]()
$201
This Delta deal was found by Cheapflights users on 4/10. 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 5/148:15 am
DTW
- ORD
Nonstop1h 30m
Delta
Sat 5/167:00 am
ORD
- DTW
Nonstop1h 29m
Delta
Deal found 4/10![Delta logo]()
$191
This United Airlines deal was found by Cheapflights users on 4/12. 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.
Thu 5/216:00 am
MBS
- ORD
Nonstop1h 31m
United Airlines
Sat 5/2311:00 am
ORD
- MBS
Nonstop1h 27m
United Airlines
Deal found 4/12![United Airlines logo]()
$239
This Southwest deal was found by Cheapflights users on 4/10. 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.
Mon 5/118:15 pm
DTW
- MDW
1 stop3h 30m
Southwest
Mon 5/188:00 am
MDW
- DTW
Nonstop1h 10m
Southwest
Deal found 4/10![Southwest logo]()
$201
This Delta deal was found by Cheapflights users on 4/10. 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 5/75:40 pm
DTW
- ORD
Nonstop1h 25m
Delta
Mon 5/117:00 am
ORD
- DTW
Nonstop1h 29m
Delta
Deal found 4/10![Delta logo]()
$191
This United Airlines deal was found by Cheapflights users on 4/10. 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.
Fri 6/266:30 am
FNT
- ORD
Nonstop1h 32m
United Airlines
Mon 6/294:38 pm
ORD
- FNT
Nonstop1h 28m
United Airlines
Deal found 4/10![United Airlines logo]()
$239
This Southwest deal was found by Cheapflights users on 4/12. 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.
Wed 5/207:10 pm
DTW
- MDW
1 stop3h 40m
Southwest
Wed 5/2710:10 am
MDW
- DTW
2 stops7h 10m
Southwest
Deal found 4/12![Southwest logo]()
$201
Last-minute flights from Michigan to IllinoisDiscover last-minute flight deals from Michigan to Illinois. Data last updated April 15, 2026 and is based on user searches.
Discover last-minute flight deals from Michigan to Illinois. Data last updated April 15, 2026 and is based on user searches.
This Frontier deal was found by Cheapflights users on 4/10. 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.
Fri 5/11:42 pm
DTW
- MDW
1 stop9h 44m
Frontier
Tue 5/56:00 am
MDW
- DTW
1 stop5h 36m
Frontier
Deal found 4/10![Frontier logo]()
$140
This Kiwi.com deal was found by Cheapflights users on 4/11. 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.
Fri 5/18:49 pm
DTW
- STL
1 stop11h 01m
Frontier
Mon 5/48:23 pm
STL
- DTW
1 stop15h 13m
Frontier
Deal found 4/11![Frontier logo]()
$144
This Expedia deal was found by Cheapflights users on 4/13. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/410:19 am
DTW
- ORD
1 stop13h 47m
Frontier
Wed 5/69:00 am
ORD
- DTW
1 stop7h 20m
Frontier
Deal found 4/13![Frontier logo]()
$140
This Southwest deal was found by Cheapflights users on 4/12. 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.
Mon 5/48:30 pm
DTW
- MDW
Nonstop1h 15m
Southwest
Wed 5/67:40 am
MDW
- DTW
Nonstop1h 05m
Southwest
Deal found 4/12![Southwest logo]()
$144
This Kiwi.com deal was found by Cheapflights users on 4/12. 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.
Mon 5/46:15 pm
DTW
- MDW
1 stop17h 54m
Frontier
Wed 5/612:04 pm
MDW
- DTW
1 stop11h 35m
Frontier
Deal found 4/12![Frontier logo]()
$147
This Southwest deal was found by Cheapflights users on 4/15. 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.
Wed 5/66:10 am
DTW
- MDW
2 stops10h 35m
Southwest
Tue 5/123:00 pm
MDW
- DTW
1 stop5h 35m
Southwest
Deal found 4/15![Southwest logo]()
$128
This Kiwi.com deal was found by Cheapflights users on 4/10. 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.
Fri 5/86:05 pm
DTW
- STL
1 stop15h 50m
Frontier
Mon 5/115:27 pm
STL
- DTW
1 stop18h 09m
Frontier
Deal found 4/10![Frontier logo]()
$141
This American Airlines deal was found by Cheapflights users on 4/13. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/115:00 am
DTW
- ORD
Nonstop1h 23m
American Airlines
Tue 5/126:45 am
ORD
- DTW
Nonstop1h 28m
American Airlines
Deal found 4/13![American Airlines logo]()
$144
This Kiwi.com deal was found by Cheapflights users on 4/14. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/126:50 am
DTW
- STL
1 stop27h 05m
Frontier
Tue 5/196:33 pm
STL
- DTW
1 stop21h 47m
Frontier
Deal found 4/14![Frontier logo]()
$132
This Southwest deal was found by Cheapflights users on 4/14. 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.
Tue 5/126:10 am
DTW
- MDW
2 stops10h 35m
Southwest
Tue 5/1910:10 am
MDW
- DTW
2 stops7h 10m
Southwest
Deal found 4/14![Southwest logo]()
$133
This Kiwi.com deal was found by Cheapflights users on 4/13. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/136:05 pm
DTW
- STL
1 stop23h 49m
Frontier
Wed 5/205:27 pm
STL
- DTW
1 stop6h 12m
Frontier
Deal found 4/13![Frontier logo]()
$127
This Expedia deal was found by Cheapflights users on 4/12. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/187:55 am
DTW
- STL
1 stop12h 28m
Frontier
Wed 5/205:27 pm
STL
- DTW
1 stop6h 12m
Frontier
Deal found 4/12![Frontier logo]()
$140
One-way flights from Michigan to IllinoisSearch for one-way flight options from Michigan to Illinois. Find affordable one-way fares based on user searches. Data last updated April 15, 2026.
Search for one-way flight options from Michigan to Illinois. Find affordable one-way fares based on user searches. Data last updated April 15, 2026.
This Southwest deal was found by Cheapflights users on 4/14. 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.
Wed 5/68:15 am
MDW
- STL
Nonstop1h 15m
Southwest
Deal found 4/14![Southwest logo]()
$49
This American Airlines deal was found by Cheapflights users on 4/14. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/610:30 pm
ORD
- STL
Nonstop1h 16m
American Airlines
Deal found 4/14![American Airlines logo]()
$49
This American Airlines deal was found by Cheapflights users on 4/13. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/139:43 am
DTW
- ORD
Nonstop1h 35m
American Airlines
Deal found 4/13![American Airlines logo]()
$50
This Delta deal was found by Cheapflights users on 4/14. 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.
Tue 5/1212:35 pm
DTW
- ORD
Nonstop1h 26m
Delta
Deal found 4/14![Delta logo]()
$59
This Delta deal was found by Cheapflights users on 4/12. 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.
Wed 5/136:19 pm
DTW
- MDW
Nonstop1h 14m
Delta
Deal found 4/12![Delta logo]()
$59
This Southwest deal was found by Cheapflights users on 4/14. 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.
Wed 5/62:40 pm
ORD
- STL
1 stop4h 35m
Southwest
Deal found 4/14![Southwest logo]()
$59
This Kiwi.com deal was found by Cheapflights users on 4/12. 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 5/126:50 am
DTW
- STL
1 stop11h 43m
Frontier
Deal found 4/12![Frontier logo]()
$63
This Southwest deal was found by Cheapflights users on 4/13. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/1211:35 am
MDW
- STL
2 stops6h 20m
Southwest
Deal found 4/13![Southwest logo]()
$64
This Southwest deal was found by Cheapflights users on 4/13. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/56:10 am
DTW
- ORD
1 stop7h 40m
Southwest
Deal found 4/13![Southwest logo]()
$64
This Southwest deal was found by Cheapflights users on 4/13. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/131:20 pm
DTW
- MDW
2 stops7h 15m
Southwest
Deal found 4/13![Southwest logo]()
$64
This Frontier deal was found by Cheapflights users on 4/14. 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.
Fri 5/84:52 pm
MDW
- STL
1 stop7h 29m
Frontier
Deal found 4/14![Frontier logo]()
$70
This Frontier deal was found by Cheapflights users on 4/14. 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.
Tue 5/121:31 pm
DTW
- ORD
1 stop7h 20m
Frontier
Deal found 4/14![Frontier logo]()
$70
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 April 15, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $127 (Kiwi.com) |
One-way from | $49 (Southwest) |
Popular in | May |
Cheapest in | September |
Average price | $318 |
Good round-trip deal | $85 or less |
Good one-way deal | $49 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 April 15, 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
Cheapest round-trip
DetroitChicago
DTW - MDW
DTWMDW
Detroit Metropolitan Wayne County
Mon 5/11
1:00 pm-1:10 pm
Nonstop1h 10m
Chicago Midway
Tue 5/12
3:00 pm-9:35 pm
1 stop5h 35m
$154
Bay CityChicago
MBS - ORD
MBSORD
Bay City MBS Intl
Wed 5/13
3:38 pm-6:05 pm
1 stop3h 27m
Chicago O'Hare Intl
Sat 5/16
7:00 am-11:11 am
1 stop3h 11m
$157
Grand RapidsChicago
GRR - ORD
GRRORD
Grand Rapids Gerald R. Ford Intl
Wed 6/3
6:00 am-6:17 am
Nonstop1h 17m
Chicago O'Hare Intl
Wed 6/10
9:45 pm-11:57 pm
Nonstop1h 12m
$157
Bay CityChicago
MBS - ORD
MBSORD
Bay City MBS Intl
Fri 5/8
6:13 pm-8:14 pm
1 stop3h 01m
Chicago O'Hare Intl
Sun 5/10
6:24 am-2:58 pm
2 stops7h 34m
$162
Grand RapidsChicago
GRR - ORD
GRRORD
Grand Rapids Gerald R. Ford Intl
Sun 5/31
5:30 am-8:45 am
1 stop4h 15m
Chicago O'Hare Intl
Mon 6/1
11:09 am-5:04 pm
1 stop4h 55m
$167
Grand RapidsChicago
GRR - ORD
GRRORD
Grand Rapids Gerald R. Ford Intl
Wed 6/3
5:45 pm-8:14 pm
1 stop3h 29m
Chicago O'Hare Intl
Wed 6/10
8:52 am-2:08 pm
1 stop4h 16m
$177
DetroitChicago
DTW - MDW
DTWMDW
Detroit Metropolitan Wayne County
Sat 5/2
4:05 pm-8:40 pm
1 stop5h 35m
Chicago Midway
Mon 5/4
7:05 pm-9:10 pm
Nonstop1h 05m
$185
Quickest round-trip
ChicagoSt. Louis
MDW - STL
MDWSTL
Chicago Midway
Wed 5/27
10:15 am-11:30 am
Nonstop1h 15m
Lambert-St Louis
Fri 5/29
5:40 am-6:50 am
Nonstop1h 10m
$187
ChicagoSt. Louis
ORD - STL
ORDSTL
Chicago O'Hare Intl
Mon 5/11
5:19 pm-9:09 pm
1 stop3h 50m
Lambert-St Louis
Tue 5/12
6:21 am-1:01 pm
2 stops6h 40m
$189
ChicagoSt. Louis
MDW - STL
MDWSTL
Chicago Midway
Thu 5/7
11:40 am-12:55 pm
Nonstop1h 15m
Lambert-St Louis
Mon 5/11
5:40 am-6:50 am
Nonstop1h 10m
$191
Showing 1-10 of 60 resultsSorted by cheapest first
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.
MDW-STL
ORD-STL
DTW-ORD
DTW-MDW
DTW-STL
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
USMI-USIL
MDW-STL
ORD-STL
DTW-ORD
DTW-MDW
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 $51). Flying from Michigan to Illinois in April is currently the most expensive (average of $169). 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 April 15, 2026.
Unlike in the evening, when flights are generally more expensive, you can save up to 16% on flights from Michigan to Illinois by exploring options for tickets in the morning.
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 April 11, 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. Monday mornings 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 April 15, 2026.
The most flights from USMI to USIL are scheduled on a Monday (90 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (51 on average).
How much does it cost to fly round-trip from Michigan to Illinois?
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 April 15, 2026.
See what other customers who have flown with Denver Air Connection,Southwest, andDelta from Michigan to Illinois have to say. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Denver Air Connection
Crew
9.1
Boarding
8.2
Comfort
8.6
Entertainment
7.6
Overall
8.1
Food
8.2
Denver Air Connection
Denver Air Connection
Crew
9.1
Boarding
8.2
Comfort
8.6
Entertainment
7.6
Overall
8.1
Food
8.2
Denver Air Connection
Crew
9.1
Boarding
8.2
Comfort
8.6
Entertainment
7.6
Overall
8.1
Food
8.2
Denver Air Connection
Crew
9.1
Boarding
8.2
Comfort
8.6
Entertainment
7.6
Overall
8.1
Food
8.2
Denver Air Connection
Crew
9.1
Boarding
8.2
Comfort
8.6
Entertainment
7.6
Overall
8.1
Food
8.2
Denver Air Connection
Crew
9.1
Boarding
8.2
Comfort
8.6
Entertainment
7.6
Overall
8.1
Food
8.2
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
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes
Complete your trip
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Top destinations
Alternative routes for Michigan to Illinois
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Illinois by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Michigan to Illinois by cabin class
Find flights from Michigan to Illinois, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Michigan and Illinois flights
Browse other Michigan and Illinois flight options. Last updated on April 15, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Find a return flight route from Illinois
Find the right flight back to Michigan after your stay in Illinois
Michigan to Illinois flights
Consider these flights traveling from Michigan to Illinois.
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 April 15, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$91 | Average$308 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$91 | Average$296 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$94 | Average$294 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$97 | Average$317 | FlexibilityNo cancel fee | On-time63% |