$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 4/7. Fares are subject to change and may not be available on all flights or dates of travel.
DTW — ORD
Apr 14 — Apr 211
Round-trip
1 adult, Economy
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Find cheap flights from Michigan to Illinois with Cheapflights
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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 March 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 March 15, 2026.
This United Airlines deal was found by Cheapflights users on 3/10. 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.
Tue 4/78:34 pm
GRR
- ORD
Nonstop1h 11m
United Airlines
Tue 4/149:50 pm
ORD
- GRR
Nonstop1h 09m
United Airlines
Deal found 3/10![United Airlines logo]()
$157
This United Airlines deal was found by Cheapflights users on 3/12. 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.
Mon 4/68:34 pm
GRR
- ORD
Nonstop1h 11m
United Airlines
Tue 4/73:40 pm
ORD
- GRR
Nonstop1h 06m
United Airlines
Deal found 3/12![United Airlines logo]()
$164
This Kiwi.com deal was found by Cheapflights users on 3/10. 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.
Wed 4/221:58 pm
DTW
- ORD
1 stop6h 59m
Multiple Airlines
Wed 4/2911:07 am
ORD
- DTW
1 stop6h 00m
Multiple Airlines
Deal found 3/10![Multiple Airlines logo]()
$166
This Kiwi.com deal was found by Cheapflights users on 3/11. 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.
Wed 4/811:34 am
DTW
- ORD
1 stop13h 48m
Multiple Airlines
Wed 4/156:08 pm
ORD
- DTW
1 stop13h 57m
Multiple Airlines
Deal found 3/11![Multiple Airlines logo]()
$168
This Kiwi.com deal was found by Cheapflights users on 3/11. 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.
Thu 4/2310:19 am
DTW
- ORD
2 stops25h 04m
Multiple Airlines
Wed 4/2911:07 am
ORD
- DTW
1 stop6h 00m
Multiple Airlines
Deal found 3/11![Multiple Airlines logo]()
$169
This Kiwi.com deal was found by Cheapflights users on 3/10. 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.
Mon 4/2710:19 am
DTW
- MDW
2 stops13h 00m
Frontier
Wed 4/296:10 am
MDW
- DTW
1 stop10h 57m
Frontier
Deal found 3/10![Frontier logo]()
$169
This CheapOair deal was found by Cheapflights users on 3/12. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/68:59 pm
DTW
- ORD
1 stop12h 02m
Spirit Airlines
Wed 4/86:01 pm
ORD
- DTW
1 stop13h 45m
Spirit Airlines
Deal found 3/12![Spirit Airlines logo]()
$170
This American Airlines deal was found by Cheapflights users on 3/11. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/187:26 pm
GRR
- ORD
Nonstop1h 28m
American Airlines
Mon 4/2010:10 pm
ORD
- GRR
Nonstop1h 07m
American Airlines
Deal found 3/11![American Airlines logo]()
$171
This Kiwi.com deal was found by Cheapflights users on 3/10. 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 4/105:34 pm
DTW
- ORD
1 stop6h 05m
Multiple Airlines
Wed 4/2211:07 am
ORD
- DTW
1 stop6h 00m
Multiple Airlines
Deal found 3/10![Multiple Airlines logo]()
$171
This Kiwi.com deal was found by Cheapflights users on 3/10. 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.
Sat 4/187:55 am
DTW
- ORD
1 stop9h 26m
Frontier
Mon 4/204:28 pm
ORD
- DTW
1 stop18h 10m
Frontier
Deal found 3/10![Frontier logo]()
$172
This Kiwi.com deal was found by Cheapflights users on 3/10. 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.
Wed 3/256:00 am
DTW
- ORD
1 stop13h 29m
Multiple Airlines
Wed 5/205:01 am
ORD
- DTW
1 stop10h 13m
Multiple Airlines
Deal found 3/10![Multiple Airlines logo]()
$173
This United Airlines deal was found by Cheapflights users on 3/11. 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.
Mon 6/89:09 pm
GRR
- ORD
Nonstop1h 25m
United Airlines
Wed 6/104:46 pm
ORD
- GRR
Nonstop1h 19m
United Airlines
Deal found 3/11![United Airlines logo]()
$174
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 March 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 March 15, 2026.
This Southwest deal was found by Cheapflights users on 3/10. 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.
Thu 5/147:00 am
DTW
- STL
Nonstop1h 45m
Southwest
Mon 5/187:40 pm
STL
- DTW
Nonstop1h 30m
Southwest
Deal found 3/10![Southwest logo]()
$215
This United Airlines deal was found by Cheapflights users on 3/10. 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 4/107:30 am
GRR
- ORD
Nonstop1h 09m
United Airlines
Wed 5/69:01 am
ORD
- GRR
Nonstop1h 07m
United Airlines
Deal found 3/10![United Airlines logo]()
$218
This American Airlines deal was found by Cheapflights users on 3/14. 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.
Fri 5/112:59 pm
FNT
- ORD
Nonstop1h 34m
American Airlines
Sun 5/39:09 pm
ORD
- FNT
Nonstop1h 17m
American Airlines
Deal found 3/14![American Airlines logo]()
$219
This Delta deal was found by Cheapflights users on 3/11. 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.
Wed 7/1512:00 pm
MBS
- ORD
1 stop5h 36m
Delta
Sun 7/197:10 am
ORD
- MBS
1 stop3h 03m
Delta
Deal found 3/11![Delta logo]()
$239
This United Airlines deal was found by Cheapflights users on 3/11. 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.
Wed 5/139:20 pm
GRR
- ORD
Nonstop1h 01m
United Airlines
Fri 5/1512:47 pm
ORD
- GRR
Nonstop1h 06m
United Airlines
Deal found 3/11![United Airlines logo]()
$218
This American Airlines deal was found by Cheapflights users on 3/14. 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 5/275:39 pm
FNT
- ORD
Nonstop1h 40m
American Airlines
Sat 5/3010:27 pm
ORD
- FNT
Nonstop1h 16m
American Airlines
Deal found 3/14![American Airlines logo]()
$219
This Kiwi.com deal was found by Cheapflights users on 3/10. 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.
Mon 3/307:03 pm
TVC
- ORD
1 stop22h 27m
Multiple Airlines
Wed 4/88:58 pm
ORD
- TVC
2 stops37h 29m
Multiple Airlines
Deal found 3/10![Multiple Airlines logo]()
$440
This Southwest deal was found by Cheapflights users on 3/13. 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 4/66:40 pm
DTW
- STL
1 stop6h 05m
Southwest
Wed 4/86:45 pm
STL
- DTW
Nonstop1h 30m
Southwest
Deal found 3/13![Southwest logo]()
$223
This Delta deal was found by Cheapflights users on 3/11. 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.
Wed 5/133:38 pm
MBS
- ORD
1 stop3h 27m
Delta
Sat 5/169:10 am
ORD
- MBS
1 stop4h 48m
Delta
Deal found 3/11![Delta logo]()
$239
This United Airlines deal was found by Cheapflights users on 3/10. 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 5/222:14 pm
MBS
- ORD
Nonstop1h 31m
United Airlines
Mon 5/259:20 pm
ORD
- MBS
Nonstop1h 25m
United Airlines
Deal found 3/10![United Airlines logo]()
$219
This American Airlines deal was found by Cheapflights users on 3/14. 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 7/45:32 pm
FNT
- ORD
Nonstop1h 43m
American Airlines
Thu 7/92:37 pm
ORD
- FNT
Nonstop1h 25m
American Airlines
Deal found 3/14![American Airlines logo]()
$219
This Southwest deal was found by Cheapflights users on 3/10. 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.
Fri 4/101:00 pm
DTW
- STL
1 stop3h 25m
Southwest
Mon 4/137:40 pm
STL
- DTW
Nonstop1h 30m
Southwest
Deal found 3/10![Southwest logo]()
$238
This Delta deal was found by Cheapflights users on 3/11. 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.
Wed 4/156:00 am
TVC
- ORD
1 stop5h 19m
Delta
Sun 4/197:00 am
ORD
- TVC
1 stop3h 28m
Delta
Deal found 3/11![Delta logo]()
$239
This United Airlines deal was found by Cheapflights users on 3/10. 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.
Thu 4/92:20 pm
MBS
- ORD
Nonstop1h 30m
United Airlines
Sun 4/1211:15 am
ORD
- MBS
Nonstop1h 20m
United Airlines
Deal found 3/10![United Airlines logo]()
$219
This United Airlines deal was found by Cheapflights users on 3/10. 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.
Thu 4/93:55 pm
FNT
- ORD
Nonstop1h 35m
United Airlines
Fri 4/174:45 pm
ORD
- FNT
Nonstop1h 19m
United Airlines
Deal found 3/10![United Airlines logo]()
$219
This Delta deal was found by Cheapflights users on 3/10. 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 4/2212:25 pm
DTW
- MDW
Nonstop1h 18m
Delta
Wed 4/291:24 pm
MDW
- DTW
Nonstop1h 15m
Delta
Deal found 3/10![Delta logo]()
$241
This Southwest deal was found by Cheapflights users on 3/14. 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 4/76:35 am
DTW
- STL
2 stops7h 25m
Southwest
Wed 4/811:35 am
STL
- DTW
2 stops9h 55m
Southwest
Deal found 3/14![Southwest logo]()
$243
This United Airlines deal was found by Cheapflights users on 3/12. 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.
Fri 4/103:55 pm
FNT
- ORD
Nonstop1h 35m
United Airlines
Mon 4/138:25 pm
ORD
- FNT
Nonstop1h 23m
United Airlines
Deal found 3/12![United Airlines logo]()
$219
This Southwest deal was found by Cheapflights users on 3/10. 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 4/811:35 am
MDW
- STL
2 stops6h 20m
Southwest
Wed 4/151:15 pm
STL
- MDW
2 stops6h 20m
Southwest
Deal found 3/10![Southwest logo]()
$243
This Delta deal was found by Cheapflights users on 3/10. 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 8/272:10 pm
TVC
- ORD
1 stop5h 31m
Delta
Sun 8/306:00 am
ORD
- TVC
2 stops6h 30m
Delta
Deal found 3/10![Delta logo]()
$244
This American Airlines deal was found by Cheapflights users on 3/14. 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.
Mon 6/86:40 am
DTW
- ORD
Nonstop1h 43m
American Airlines
Fri 6/129:06 pm
ORD
- DTW
Nonstop1h 33m
American Airlines
Deal found 3/14![American Airlines logo]()
$287
This United Airlines deal was found by Cheapflights users on 3/11. 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.
Thu 5/77:45 pm
FNT
- ORD
Nonstop1h 35m
United Airlines
Sat 5/96:55 am
ORD
- FNT
Nonstop1h 11m
United Airlines
Deal found 3/11![United Airlines logo]()
$219
This Delta deal was found by Cheapflights users on 3/12. 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.
Sat 4/185:29 am
GRR
- ORD
1 stop5h 50m
Delta
Mon 4/207:00 am
ORD
- GRR
1 stop3h 13m
Delta
Deal found 3/12![Delta logo]()
$247
This Southwest deal was found by Cheapflights users on 3/14. 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.
Sat 4/258:35 am
DTW
- MDW
Nonstop1h 20m
Southwest
Tue 4/286:05 pm
MDW
- DTW
Nonstop1h 10m
Southwest
Deal found 3/14![Southwest logo]()
$263
This United Airlines deal was found by Cheapflights users on 3/12. 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.
Fri 4/103:55 pm
FNT
- ORD
Nonstop1h 35m
United Airlines
Fri 4/178:25 pm
ORD
- FNT
Nonstop1h 23m
United Airlines
Deal found 3/12![United Airlines logo]()
$219
This Delta deal was found by Cheapflights users on 3/10. 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.
Fri 4/103:30 pm
GRR
- ORD
1 stop5h 53m
Delta
Wed 5/67:00 am
ORD
- GRR
1 stop3h 13m
Delta
Deal found 3/10![Delta logo]()
$248
This Southwest deal was found by Cheapflights users on 3/14. 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.
Thu 4/239:00 am
MDW
- STL
Nonstop1h 15m
Southwest
Sun 4/2610:00 pm
STL
- MDW
Nonstop1h 05m
Southwest
Deal found 3/14![Southwest logo]()
$264
This United Airlines deal was found by Cheapflights users on 3/12. 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 6/256:30 am
FNT
- ORD
Nonstop1h 32m
United Airlines
Tue 6/3012:40 pm
ORD
- FNT
Nonstop1h 21m
United Airlines
Deal found 3/12![United Airlines logo]()
$219
This Delta deal was found by Cheapflights users on 3/10. 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.
Fri 4/102:21 pm
GRR
- ORD
1 stop3h 22m
Delta
Tue 5/57:00 am
ORD
- GRR
1 stop3h 13m
Delta
Deal found 3/10![Delta logo]()
$248
This United Airlines deal was found by Cheapflights users on 3/11. 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.
Mon 4/278:05 pm
FNT
- ORD
Nonstop1h 35m
United Airlines
Tue 5/58:10 pm
ORD
- FNT
Nonstop1h 24m
United Airlines
Deal found 3/11![United Airlines logo]()
$219
Last-minute flights from Michigan to IllinoisDiscover last-minute flight deals from Michigan to Illinois. Data last updated March 15, 2026 and is based on user searches.
Discover last-minute flight deals from Michigan to Illinois. Data last updated March 15, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 3/12. 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.
Mon 4/68:34 pm
GRR
- ORD
Nonstop1h 11m
United Airlines
Tue 4/73:40 pm
ORD
- GRR
Nonstop1h 06m
United Airlines
Deal found 3/12![United Airlines logo]()
$164
This CheapOair deal was found by Cheapflights users on 3/12. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/68:59 pm
DTW
- ORD
1 stop12h 02m
Spirit Airlines
Wed 4/86:01 pm
ORD
- DTW
1 stop13h 45m
Spirit Airlines
Deal found 3/12![Spirit Airlines logo]()
$170
This United Airlines deal was found by Cheapflights users on 3/11. 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.
Wed 4/89:10 am
GRR
- ORD
Nonstop1h 09m
United Airlines
Wed 4/154:30 pm
ORD
- GRR
Nonstop1h 05m
United Airlines
Deal found 3/11![United Airlines logo]()
$157
This Kiwi.com deal was found by Cheapflights users on 3/11. 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.
Wed 4/811:34 am
DTW
- ORD
1 stop13h 48m
Multiple Airlines
Wed 4/156:08 pm
ORD
- DTW
1 stop13h 57m
Multiple Airlines
Deal found 3/11![Multiple Airlines logo]()
$168
This Kiwi.com deal was found by Cheapflights users on 3/10. 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 4/105:34 pm
DTW
- ORD
1 stop6h 05m
Multiple Airlines
Wed 4/2211:07 am
ORD
- DTW
1 stop6h 00m
Multiple Airlines
Deal found 3/10![Multiple Airlines logo]()
$171
This Kiwi.com deal was found by Cheapflights users on 3/11. 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 4/109:53 pm
DTW
- ORD
1 stop27h 29m
Multiple Airlines
Mon 4/204:28 pm
ORD
- DTW
1 stop18h 10m
Multiple Airlines
Deal found 3/11![Multiple Airlines logo]()
$175
This Kiwi.com deal was found by Cheapflights users on 3/10. 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.
Sat 4/116:05 am
DTW
- ORD
1 stop6h 03m
Multiple Airlines
Wed 4/226:08 pm
ORD
- DTW
1 stop13h 57m
Multiple Airlines
Deal found 3/10![Multiple Airlines logo]()
$174
This American Airlines deal was found by Cheapflights users on 3/11. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/187:26 pm
GRR
- ORD
Nonstop1h 28m
American Airlines
Mon 4/2010:10 pm
ORD
- GRR
Nonstop1h 07m
American Airlines
Deal found 3/11![American Airlines logo]()
$171
This Kiwi.com deal was found by Cheapflights users on 3/10. 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.
Sat 4/187:55 am
DTW
- ORD
1 stop9h 26m
Frontier
Mon 4/204:28 pm
ORD
- DTW
1 stop18h 10m
Frontier
Deal found 3/10![Frontier logo]()
$172
This Kiwi.com deal was found by Cheapflights users on 3/11. 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.
Thu 4/238:43 pm
DTW
- ORD
1 stop14h 40m
Multiple Airlines
Tue 4/2811:07 am
ORD
- DTW
1 stop6h 00m
Multiple Airlines
Deal found 3/11![Multiple Airlines logo]()
$169
This Kiwi.com deal was found by Cheapflights users on 3/11. 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.
Sat 4/255:09 pm
DTW
- ORD
1 stop6h 30m
Frontier
Mon 4/274:28 pm
ORD
- DTW
1 stop18h 10m
Frontier
Deal found 3/11![Frontier logo]()
$173
This Kiwi.com deal was found by Cheapflights users on 3/10. 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.
Mon 4/2710:19 am
DTW
- MDW
2 stops13h 00m
Frontier
Wed 4/296:10 am
MDW
- DTW
1 stop10h 57m
Frontier
Deal found 3/10![Frontier logo]()
$169
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 March 15, 2026.
Search for one-way flight options from Michigan to Illinois. Find affordable one-way fares based on user searches. Data last updated March 15, 2026.
This Southwest deal was found by Cheapflights users on 3/10. 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.
Tue 4/710:15 am
MDW
- STL
Nonstop1h 15m
Southwest
Deal found 3/10![Southwest logo]()
$49
This United Airlines deal was found by Cheapflights users on 3/12. 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.
Tue 4/77:45 pm
ORD
- STL
Nonstop1h 28m
United Airlines
Deal found 3/12![United Airlines logo]()
$49
This Southwest deal was found by Cheapflights users on 3/10. 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.
Tue 3/312:40 pm
ORD
- STL
1 stop5h 15m
Southwest
Deal found 3/10![Southwest logo]()
$59
This Kiwi.com deal was found by Cheapflights users on 3/10. 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.
Sat 5/95:09 pm
DTW
- MDW
1 stop6h 10m
Frontier
Deal found 3/10![Frontier logo]()
$63
This Southwest deal was found by Cheapflights users on 3/12. 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.
Tue 4/72:40 pm
ORD
- STL
1 stop7h 20m
Southwest
Deal found 3/12![Southwest logo]()
$64
This Kiwi.com deal was found by Cheapflights users on 3/10. 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 4/248:49 pm
DTW
- ORD
1 stop15h 44m
Frontier
Deal found 3/10![Frontier logo]()
$65
This Kiwi.com deal was found by Cheapflights users on 3/10. 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.
Tue 5/1212:26 pm
DTW
- MDW
1 stop8h 05m
Frontier
Deal found 3/10![Frontier logo]()
$65
This American Airlines deal was found by Cheapflights users on 3/11. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/143:18 pm
ORD
- STL
Nonstop1h 23m
American Airlines
Deal found 3/11![American Airlines logo]()
$66
This Kiwi.com deal was found by Cheapflights users on 3/10. 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.
Tue 5/1212:26 pm
DTW
- STL
1 stop19h 24m
Frontier
Deal found 3/10![Frontier logo]()
$70
This Kiwi.com deal was found by Cheapflights users on 3/10. 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.
Tue 5/126:00 am
MDW
- STL
1 stop24h 50m
Frontier
Deal found 3/10![Frontier logo]()
$70
This Kiwi.com deal was found by Cheapflights users on 3/13. 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.
Tue 5/121:31 pm
DTW
- ORD
1 stop19h 24m
Frontier
Deal found 3/13![Frontier logo]()
$70
This Kiwi.com deal was found by Cheapflights users on 3/11. 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.
Mon 4/135:50 pm
DTW
- ORD
1 stop24h 10m
Frontier
Deal found 3/11![Frontier logo]()
$72
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 March 15, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $157 (United Airlines) |
One-way from | $49 (Southwest) |
Popular in | May |
Cheapest in | September |
Average price | $291 |
Good round-trip deal | $84 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 March 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
DetroitSt. Louis
DTW - STL
DTWSTL
Detroit Metropolitan Wayne County
Thu 5/14
7:00 am-7:45 am
Nonstop1h 45m
Lambert-St Louis
Mon 5/18
7:40 pm-10:10 pm
Nonstop1h 30m
$215
Grand RapidsChicago
GRR - ORD
GRRORD
Grand Rapids Gerald R. Ford Intl
Fri 4/10
7:30 am-7:39 am
Nonstop1h 09m
Chicago O'Hare Intl
Wed 5/6
9:01 am-11:08 am
Nonstop1h 07m
$218
Quickest round-trip
Grand RapidsChicago
GRR - ORD
GRRORD
Grand Rapids Gerald R. Ford Intl
Wed 5/13
9:20 pm-9:21 pm
Nonstop1h 01m
Chicago O'Hare Intl
Fri 5/15
12:47 pm-2:53 pm
Nonstop1h 06m
$218
FlintChicago
FNT - ORD
FNTORD
Flint Bishop
Fri 5/1
12:59 pm-1:33 pm
Nonstop1h 34m
Chicago O'Hare Intl
Sun 5/3
9:09 pm-11:26 pm
Nonstop1h 17m
$219
FlintChicago
FNT - ORD
FNTORD
Flint Bishop
Wed 5/27
5:39 pm-6:19 pm
Nonstop1h 40m
Chicago O'Hare Intl
Sat 5/30
10:27 pm-12:43 am
Nonstop1h 16m
$219
Bay CityChicago
MBS - ORD
MBSORD
Bay City MBS Intl
Fri 5/22
2:14 pm-2:45 pm
Nonstop1h 31m
Chicago O'Hare Intl
Mon 5/25
9:20 pm-11:45 pm
Nonstop1h 25m
$219
FlintChicago
FNT - ORD
FNTORD
Flint Bishop
Sat 7/4
5:32 pm-6:15 pm
Nonstop1h 43m
Chicago O'Hare Intl
Thu 7/9
2:37 pm-5:02 pm
Nonstop1h 25m
$219
Bay CityChicago
MBS - ORD
MBSORD
Bay City MBS Intl
Thu 4/9
2:20 pm-2:50 pm
Nonstop1h 30m
Chicago O'Hare Intl
Sun 4/12
11:15 am-1:35 pm
Nonstop1h 20m
$219
FlintChicago
FNT - ORD
FNTORD
Flint Bishop
Thu 4/9
3:55 pm-4:30 pm
Nonstop1h 35m
Chicago O'Hare Intl
Fri 4/17
4:45 pm-7:04 pm
Nonstop1h 19m
$219
FlintChicago
FNT - ORD
FNTORD
Flint Bishop
Fri 4/10
3:55 pm-4:30 pm
Nonstop1h 35m
Chicago O'Hare Intl
Mon 4/13
8:25 pm-10:48 pm
Nonstop1h 23m
$219
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.
GRR-ORD
DTW-ORD
DTW-MDW
MDW-STL
ORD-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
GRR-ORD
DTW-ORD
DTW-MDW
MDW-STL
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 $143). 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 March 15, 2026.
Unlike in the evening, when flights are generally more expensive, you can save up to 18% 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 March 14, 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 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 March 15, 2026.
The most flights from USMI to USIL are scheduled on a Friday (77 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (40 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 March 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
Entertainment
7.6
Boarding
8.2
Overall
8.1
Crew
9.1
Comfort
8.6
Food
8.2
Denver Air Connection
Denver Air Connection
Entertainment
7.6
Boarding
8.2
Overall
8.1
Crew
9.1
Comfort
8.6
Food
8.2
Denver Air Connection
Entertainment
7.6
Boarding
8.2
Overall
8.1
Crew
9.1
Comfort
8.6
Food
8.2
Denver Air Connection
Entertainment
7.6
Boarding
8.2
Overall
8.1
Crew
9.1
Comfort
8.6
Food
8.2
Denver Air Connection
Entertainment
7.6
Boarding
8.2
Overall
8.1
Crew
9.1
Comfort
8.6
Food
8.2
Denver Air Connection
Entertainment
7.6
Boarding
8.2
Overall
8.1
Crew
9.1
Comfort
8.6
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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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 March 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 March 15, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$91 | Average$295 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$91 | Average$306 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$94 | Average$292 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$97 | Average$240 | FlexibilityNo cancel fee | On-time63% |