$55+ 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 7/8. Fares are subject to change and may not be available on all flights or dates of travel.
DTW — ORD
Jul 16 — Jul 231
Round-trip
1 adult, Economy
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Find cheap flights from Michigan to Illinois with Cheapflights
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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 June 16, 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 June 16, 2026.
This American Airlines deal was found by Cheapflights users on 6/13. 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.
Tue 7/147:54 pm
GRR
- ORD
Nonstop1h 43m
American Airlines
Wed 7/1510:32 pm
ORD
- GRR
Nonstop1h 04m
American Airlines
Deal found 6/13![American Airlines logo]()
$157
This Southwest deal was found by Cheapflights users on 6/11. 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.
Tue 7/1410:40 am
DTW
- MDW
1 stop4h 50m
Southwest
Tue 7/216:10 pm
MDW
- DTW
Nonstop1h 15m
Southwest
Deal found 6/11![Southwest logo]()
$167
This United Airlines deal was found by Cheapflights users on 6/13. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/87:15 am
GRR
- ORD
Nonstop1h 13m
United Airlines
Tue 8/1110:49 am
ORD
- GRR
Nonstop1h 09m
United Airlines
Deal found 6/13![United Airlines logo]()
$176
This Delta deal was found by Cheapflights users on 6/14. 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 12/15:50 pm
GRR
- ORD
1 stop3h 34m
Delta
Tue 12/157:05 am
ORD
- GRR
1 stop5h 32m
Delta
Deal found 6/14![Delta logo]()
$177
This United Airlines deal was found by Cheapflights users on 6/11. 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 8/127:30 am
DTW
- ORD
Nonstop1h 26m
United Airlines
Wed 8/122:30 pm
ORD
- DTW
Nonstop1h 30m
United Airlines
Deal found 6/11![United Airlines logo]()
$177
This Kiwi.com deal was found by Cheapflights users on 6/13. 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.
Thu 8/62:56 pm
DTW
- STL
1 stop19h 01m
Frontier
Mon 8/104:57 pm
STL
- DTW
1 stop19h 36m
Frontier
Deal found 6/13![Frontier logo]()
$184
This Kiwi.com deal was found by Cheapflights users on 6/13. 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.
Thu 7/96:10 am
DTW
- STL
1 stop12h 27m
Frontier
Fri 7/104:57 pm
STL
- DTW
1 stop6h 43m
Frontier
Deal found 6/13![Frontier logo]()
$187
This JetBlue deal was found by Cheapflights users on 6/13. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/47:30 am
DTW
- ORD
1 stop6h 30m
JetBlue
Sat 7/111:09 pm
ORD
- DTW
1 stop8h 36m
JetBlue
Deal found 6/13![JetBlue logo]()
$187
This Kiwi.com deal was found by Cheapflights users on 6/15. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/76:10 am
DTW
- STL
1 stop12h 27m
Frontier
Tue 7/146:34 pm
STL
- DTW
1 stop20h 54m
Frontier
Deal found 6/15![Frontier logo]()
$188
This American Airlines deal was found by Cheapflights users on 6/11. 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.
Wed 9/162:43 pm
GRR
- ORD
Nonstop1h 29m
American Airlines
Thu 10/17:09 am
ORD
- GRR
Nonstop1h 13m
American Airlines
Deal found 6/11![American Airlines logo]()
$188
This American Airlines deal was found by Cheapflights users on 6/15. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/67:33 am
GRR
- ORD
Nonstop1h 38m
American Airlines
Mon 8/108:50 pm
ORD
- GRR
Nonstop1h 10m
American Airlines
Deal found 6/15![American Airlines logo]()
$195
This Delta deal was found by Cheapflights users on 6/13. 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.
Sat 8/84:00 pm
GRR
- ORD
1 stop5h 30m
Delta
Tue 8/115:20 pm
ORD
- GRR
1 stop5h 35m
Delta
Deal found 6/13![Delta logo]()
$196
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 June 16, 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 June 16, 2026.
This Delta deal was found by Cheapflights users on 6/14. 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 12/15:50 pm
GRR
- ORD
1 stop3h 34m
Delta
Tue 12/157:05 am
ORD
- GRR
1 stop5h 32m
Delta
Deal found 6/14![Delta logo]()
$177
This Southwest deal was found by Cheapflights users on 6/15. 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.
Tue 7/146:30 pm
DTW
- STL
Nonstop1h 35m
Southwest
Tue 7/217:40 pm
STL
- DTW
Nonstop1h 35m
Southwest
Deal found 6/15![Southwest logo]()
$209
This United Airlines deal was found by Cheapflights users on 6/15. 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.
Tue 7/216:25 pm
GRR
- ORD
Nonstop1h 15m
United Airlines
Thu 7/3010:37 am
ORD
- GRR
Nonstop1h 13m
United Airlines
Deal found 6/15![United Airlines logo]()
$210
This American Airlines deal was found by Cheapflights users on 6/15. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/245:29 am
FNT
- ORD
Nonstop1h 22m
American Airlines
Sun 7/262:49 pm
ORD
- FNT
Nonstop1h 21m
American Airlines
Deal found 6/15![American Airlines logo]()
$239
This JetBlue deal was found by Cheapflights users on 6/14. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/196:00 am
DTW
- ORD
1 stop8h 39m
JetBlue
Tue 8/2510:56 am
ORD
- DTW
1 stop5h 52m
JetBlue
Deal found 6/14![JetBlue logo]()
$252
This Kiwi.com deal was found by Cheapflights users on 6/15. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/112:46 pm
ORD
- STL
2 stops18h 54m
Frontier
Mon 9/1410:35 am
STL
- ORD
1 stop9h 09m
Frontier
Deal found 6/15![Frontier logo]()
$267
This Delta deal was found by Cheapflights users on 6/11. 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.
Thu 8/135:58 pm
DTW
- ORD
Nonstop1h 31m
Delta
Tue 8/1811:22 am
ORD
- DTW
Nonstop1h 31m
Delta
Deal found 6/11![Delta logo]()
$196
This Southwest deal was found by Cheapflights users on 6/11. 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 7/17:05 am
DTW
- STL
Nonstop1h 35m
Southwest
Sat 7/410:15 am
STL
- DTW
Nonstop1h 30m
Southwest
Deal found 6/11![Southwest logo]()
$209
This Delta deal was found by Cheapflights users on 6/11. 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 9/165:36 pm
GRR
- ORD
1 stop3h 46m
Delta
Thu 10/15:10 pm
ORD
- GRR
1 stop5h 47m
Delta
Deal found 6/11![Delta logo]()
$208
This United Airlines deal was found by Cheapflights users on 6/15. 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.
Sat 9/267:02 pm
MBS
- ORD
Nonstop1h 28m
United Airlines
Mon 9/289:25 pm
ORD
- MBS
Nonstop1h 23m
United Airlines
Deal found 6/15![United Airlines logo]()
$235
This American Airlines deal was found by Cheapflights users on 6/13. 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.
Fri 7/105:29 am
FNT
- ORD
Nonstop1h 22m
American Airlines
Sun 7/129:29 pm
ORD
- FNT
Nonstop1h 17m
American Airlines
Deal found 6/13![American Airlines logo]()
$239
This Southwest deal was found by Cheapflights users on 6/14. 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 6/307:50 pm
DTW
- STL
1 stop3h 35m
Southwest
Fri 7/37:55 pm
STL
- DTW
Nonstop1h 30m
Southwest
Deal found 6/14![Southwest logo]()
$219
This Delta deal was found by Cheapflights users on 6/11. 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.
Thu 8/65:58 pm
DTW
- ORD
Nonstop1h 31m
Delta
Mon 8/107:00 am
ORD
- DTW
Nonstop1h 27m
Delta
Deal found 6/11![Delta logo]()
$215
This United Airlines deal was found by Cheapflights users on 6/15. 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 8/283:52 pm
GRR
- ORD
Nonstop1h 17m
United Airlines
Sat 9/57:58 am
ORD
- GRR
Nonstop1h 17m
United Airlines
Deal found 6/15![United Airlines logo]()
$237
This American Airlines deal was found by Cheapflights users on 6/13. 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.
Thu 7/235:40 pm
FNT
- ORD
Nonstop1h 38m
American Airlines
Mon 7/272:49 pm
ORD
- FNT
Nonstop1h 21m
American Airlines
Deal found 6/13![American Airlines logo]()
$239
This United Airlines deal was found by Cheapflights users on 6/12. 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 7/236:30 am
FNT
- ORD
Nonstop1h 32m
United Airlines
Sat 7/2511:00 am
ORD
- FNT
Nonstop1h 23m
United Airlines
Deal found 6/12![United Airlines logo]()
$239
This American Airlines deal was found by Cheapflights users on 6/11. 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.
Thu 7/25:40 pm
FNT
- ORD
Nonstop1h 38m
American Airlines
Sun 7/52:49 pm
ORD
- FNT
Nonstop1h 21m
American Airlines
Deal found 6/11![American Airlines logo]()
$240
This Southwest deal was found by Cheapflights users on 6/15. 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.
Tue 7/148:55 am
DTW
- MDW
Nonstop1h 15m
Southwest
Tue 7/2112:55 pm
MDW
- DTW
Nonstop1h 10m
Southwest
Deal found 6/15![Southwest logo]()
$243
This Delta deal was found by Cheapflights users on 6/11. 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 7/412:25 pm
DTW
- MDW
Nonstop1h 21m
Delta
Tue 7/76:58 pm
MDW
- DTW
Nonstop1h 18m
Delta
Deal found 6/11![Delta logo]()
$230
This United Airlines deal was found by Cheapflights users on 6/11. 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 7/302:27 pm
FNT
- ORD
Nonstop1h 28m
United Airlines
Tue 8/113:35 pm
ORD
- FNT
Nonstop1h 22m
United Airlines
Deal found 6/11![United Airlines logo]()
$239
This Southwest deal was found by Cheapflights users on 6/15. 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 11/112:20 pm
DTW
- MDW
Nonstop1h 15m
Southwest
Mon 11/236:50 pm
MDW
- DTW
Nonstop1h 10m
Southwest
Deal found 6/15![Southwest logo]()
$252
This American Airlines deal was found by Cheapflights users on 6/15. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/55:29 am
FNT
- ORD
Nonstop1h 22m
American Airlines
Mon 8/39:17 pm
ORD
- FNT
Nonstop1h 17m
American Airlines
Deal found 6/15![American Airlines logo]()
$254
This United Airlines deal was found by Cheapflights users on 6/12. 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 9/16:32 pm
FNT
- ORD
Nonstop1h 29m
United Airlines
Sun 9/2012:00 pm
ORD
- FNT
Nonstop1h 21m
United Airlines
Deal found 6/12![United Airlines logo]()
$239
This Delta deal was found by Cheapflights users on 6/15. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/216:07 pm
DTW
- MDW
Nonstop1h 18m
Delta
Tue 7/281:18 pm
MDW
- DTW
Nonstop1h 17m
Delta
Deal found 6/15![Delta logo]()
$243
This Southwest deal was found by Cheapflights users on 6/15. 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 7/83:45 pm
MDW
- STL
1 stop4h 45m
Southwest
Mon 7/139:55 am
STL
- MDW
1 stop4h 45m
Southwest
Deal found 6/15![Southwest logo]()
$254
This United Airlines deal was found by Cheapflights users on 6/12. 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.
Wed 9/26:32 pm
FNT
- ORD
Nonstop1h 29m
United Airlines
Sat 9/193:29 pm
ORD
- FNT
Nonstop1h 22m
United Airlines
Deal found 6/12![United Airlines logo]()
$239
This Delta deal was found by Cheapflights users on 6/11. 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.
Sun 8/303:50 pm
DTW
- ORD
Nonstop1h 27m
Delta
Tue 9/15:20 pm
ORD
- DTW
Nonstop1h 32m
Delta
Deal found 6/11![Delta logo]()
$246
This Southwest deal was found by Cheapflights users on 6/11. 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.
Thu 8/69:20 am
MDW
- STL
Nonstop1h 10m
Southwest
Sat 8/88:25 am
STL
- MDW
Nonstop1h 05m
Southwest
Deal found 6/11![Southwest logo]()
$261
This United Airlines deal was found by Cheapflights users on 6/11. 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 7/26:30 am
FNT
- ORD
Nonstop1h 32m
United Airlines
Sun 7/55:55 pm
ORD
- FNT
Nonstop1h 28m
United Airlines
Deal found 6/11![United Airlines logo]()
$239
This Delta deal was found by Cheapflights users on 6/15. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/266:50 am
MBS
- ORD
1 stop4h 47m
Delta
Mon 9/285:10 pm
ORD
- MBS
1 stop4h 16m
Delta
Deal found 6/15![Delta logo]()
$254
Last-minute flights from Michigan to IllinoisDiscover last-minute flight deals from Michigan to Illinois. Data last updated June 16, 2026 and is based on user searches.
Discover last-minute flight deals from Michigan to Illinois. Data last updated June 16, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 6/15. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/18:00 pm
DTW
- STL
Nonstop1h 39m
Delta
Tue 7/710:19 am
STL
- DTW
Nonstop1h 34m
Delta
Deal found 6/15![Delta logo]()
$213
This JetBlue deal was found by Cheapflights users on 6/13. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/47:30 am
DTW
- ORD
1 stop6h 30m
JetBlue
Sat 7/111:09 pm
ORD
- DTW
1 stop8h 36m
JetBlue
Deal found 6/13![JetBlue logo]()
$187
This JetBlue deal was found by Cheapflights users on 6/15. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/47:30 am
DTW
- ORD
1 stop6h 30m
JetBlue
Tue 7/710:56 am
ORD
- DTW
1 stop5h 53m
JetBlue
Deal found 6/15![JetBlue logo]()
$203
This Kiwi.com deal was found by Cheapflights users on 6/15. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/76:10 am
DTW
- STL
1 stop12h 27m
Frontier
Tue 7/146:34 pm
STL
- DTW
1 stop20h 54m
Frontier
Deal found 6/15![Frontier logo]()
$188
This Southwest deal was found by Cheapflights users on 6/11. 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.
Tue 7/76:30 pm
DTW
- STL
Nonstop1h 35m
Southwest
Tue 7/143:25 pm
STL
- DTW
Nonstop1h 30m
Southwest
Deal found 6/11![Southwest logo]()
$209
This Kiwi.com deal was found by Cheapflights users on 6/13. 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.
Thu 7/96:10 am
DTW
- STL
1 stop12h 27m
Frontier
Fri 7/104:57 pm
STL
- DTW
1 stop6h 43m
Frontier
Deal found 6/13![Frontier logo]()
$187
This American Airlines deal was found by Cheapflights users on 6/13. 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.
Tue 7/147:54 pm
GRR
- ORD
Nonstop1h 43m
American Airlines
Wed 7/1510:32 pm
ORD
- GRR
Nonstop1h 04m
American Airlines
Deal found 6/13![American Airlines logo]()
$157
This Southwest deal was found by Cheapflights users on 6/11. 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.
Tue 7/1410:40 am
DTW
- MDW
1 stop4h 50m
Southwest
Tue 7/216:10 pm
MDW
- DTW
Nonstop1h 15m
Southwest
Deal found 6/11![Southwest logo]()
$167
This Kissandfly.com deal was found by Cheapflights users on 6/11. 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 Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/146:45 am
DTW
- ORD
Nonstop1h 45m
Frontier
Tue 7/217:05 am
ORD
- DTW
1 stop5h 28m
Frontier
Deal found 6/11![Frontier logo]()
$197
This Expedia deal was found by Cheapflights users on 6/14. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/142:56 pm
DTW
- ORD
1 stop5h 57m
Multiple Airlines
Tue 7/2110:56 am
ORD
- DTW
1 stop5h 53m
Multiple Airlines
Deal found 6/14![Multiple Airlines logo]()
$209
This United Airlines deal was found by Cheapflights users on 6/16. 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 7/216:25 pm
GRR
- ORD
Nonstop1h 15m
United Airlines
Sat 7/256:02 pm
ORD
- GRR
Nonstop1h 10m
United Airlines
Deal found 6/16![United Airlines logo]()
$210
This Kiwi.com deal was found by Cheapflights users on 6/14. 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.
Sat 7/252:56 pm
DTW
- STL
1 stop27h 41m
Frontier
Wed 7/294:57 pm
STL
- DTW
1 stop19h 36m
Frontier
Deal found 6/14![Frontier logo]()
$203
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 June 16, 2026.
Search for one-way flight options from Michigan to Illinois. Find affordable one-way fares based on user searches. Data last updated June 16, 2026.
This Southwest deal was found by Cheapflights users on 6/13. 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 7/811:25 am
MDW
- STL
Nonstop1h 10m
Southwest
Deal found 6/13![Southwest logo]()
$55
This United Airlines deal was found by Cheapflights users on 6/13. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/212:20 pm
ORD
- STL
Nonstop1h 26m
United Airlines
Deal found 6/13![United Airlines logo]()
$55
This American Airlines deal was found by Cheapflights users on 6/13. 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 7/811:00 pm
ORD
- STL
Nonstop1h 16m
American Airlines
Deal found 6/13![American Airlines logo]()
$60
This Delta deal was found by Cheapflights users on 6/16. 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 7/299:19 am
MDW
- STL
1 stop3h 46m
Delta
Deal found 6/16![Delta logo]()
$79
This American Airlines deal was found by Cheapflights users on 6/15. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/147:54 pm
GRR
- ORD
Nonstop1h 43m
American Airlines
Deal found 6/15![American Airlines logo]()
$79
This United Airlines deal was found by Cheapflights users on 6/11. 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.
Tue 7/2111:00 am
DTW
- ORD
Nonstop1h 29m
United Airlines
Deal found 6/11![United Airlines logo]()
$79
This Delta deal was found by Cheapflights users on 6/11. 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.
Tue 7/78:50 am
DTW
- MDW
Nonstop1h 23m
Delta
Deal found 6/11![Delta logo]()
$79
This Delta deal was found by Cheapflights users on 6/16. 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 8/127:00 am
ORD
- STL
1 stop6h 14m
Delta
Deal found 6/16![Delta logo]()
$79
This Trip.com deal was found by Cheapflights users on 6/11. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/116:10 am
DTW
- STL
1 stop12h 27m
Frontier
Deal found 6/11![Frontier logo]()
$88
This Delta deal was found by Cheapflights users on 6/15. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/125:30 am
GRR
- ORD
1 stop3h 26m
Delta
Deal found 6/15![Delta logo]()
$89
This United Airlines deal was found by Cheapflights users on 6/11. 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 8/57:05 am
DTW
- ORD
Nonstop1h 37m
United Airlines
Deal found 6/11![United Airlines logo]()
$89
This Southwest deal was found by Cheapflights users on 6/11. 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 7/88:10 pm
DTW
- MDW
1 stop4h 05m
Southwest
Deal found 6/11![Southwest logo]()
$89
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 June 16, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $157 (American Airlines) |
One-way from | $55 (Southwest) |
Popular in | June |
Cheapest in | September |
Average price | $421 |
Good round-trip deal | $210 or less |
Good one-way deal | $87 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 June 16, 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
Grand RapidsChicago
GRR - ORD
GRRORD
Grand Rapids Gerald R. Ford Intl
Tue 12/1
5:50 pm-8:24 pm
1 stop3h 34m
Chicago O'Hare Intl
Tue 12/15
7:05 am-1:37 pm
1 stop5h 32m
$177
DetroitChicago
DTW - ORD
DTWORD
Detroit Metropolitan Wayne County
Thu 8/13
5:58 pm-6:29 pm
Nonstop1h 31m
Chicago O'Hare Intl
Tue 8/18
11:22 am-1:53 pm
Nonstop1h 31m
$196
Grand RapidsChicago
GRR - ORD
GRRORD
Grand Rapids Gerald R. Ford Intl
Wed 9/16
5:36 pm-8:22 pm
1 stop3h 46m
Chicago O'Hare Intl
Thu 10/1
5:10 pm-11:57 pm
1 stop5h 47m
$208
DetroitSt. Louis
DTW - STL
DTWSTL
Detroit Metropolitan Wayne County
Tue 7/14
6:30 pm-7:05 pm
Nonstop1h 35m
Lambert-St Louis
Tue 7/21
7:40 pm-10:15 pm
Nonstop1h 35m
$209
DetroitSt. Louis
DTW - STL
DTWSTL
Detroit Metropolitan Wayne County
Wed 7/1
7:05 am-7:40 am
Nonstop1h 35m
Lambert-St Louis
Sat 7/4
10:15 am-12:45 pm
Nonstop1h 30m
$209
Grand RapidsChicago
GRR - ORD
GRRORD
Grand Rapids Gerald R. Ford Intl
Tue 7/21
6:25 pm-6:40 pm
Nonstop1h 15m
Chicago O'Hare Intl
Thu 7/30
10:37 am-12:50 pm
Nonstop1h 13m
$210
DetroitChicago
DTW - ORD
DTWORD
Detroit Metropolitan Wayne County
Thu 8/6
5:58 pm-6:29 pm
Nonstop1h 31m
Chicago O'Hare Intl
Mon 8/10
7:00 am-9:27 am
Nonstop1h 27m
$215
DetroitSt. Louis
DTW - STL
DTWSTL
Detroit Metropolitan Wayne County
Tue 6/30
7:50 pm-10:25 pm
1 stop3h 35m
Lambert-St Louis
Fri 7/3
7:55 pm-10:25 pm
Nonstop1h 30m
$219
DetroitChicago
DTW - MDW
DTWMDW
Detroit Metropolitan Wayne County
Sat 7/4
12:25 pm-12:46 pm
Nonstop1h 21m
Chicago Midway
Tue 7/7
6:58 pm-9:16 pm
Nonstop1h 18m
$230
Bay CityChicago
MBS - ORD
MBSORD
Bay City MBS Intl
Sat 9/26
7:02 pm-7:30 pm
Nonstop1h 28m
Chicago O'Hare Intl
Mon 9/28
9:25 pm-11:48 pm
Nonstop1h 23m
$235
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-STL
FNT-ORD
DTW-ORD
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-STL
FNT-ORD
DTW-ORD
What is the cheapest month to book a flight from Michigan to Illinois?
Currently, September is the cheapest month in which you can book a flight from Michigan to Illinois (average of $45). Flying from Michigan to Illinois in December is currently the most expensive (average of $93). 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 June 16, 2026.
Unlike in the evening, when flights are generally more expensive, you can save up to 15% on flights from Michigan to Illinois by exploring options for tickets in the morning.
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 June 16, 2026.
The most flights from USMI to USIL are scheduled on a Monday (93 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (48 on average).
How much does it cost to fly round-trip from Michigan to Illinois?
How far ahead should I book a flight from Michigan to Illinois?
To ensure you get the cheapest price possible for a flight from Michigan to Illinois, you should look to book at least 68 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.
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 June 13, 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.
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 June 16, 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
Overall
8.1
Food
8.2
Boarding
8.2
Comfort
8.6
Crew
9.1
Entertainment
7.6
Denver Air Connection
Denver Air Connection
Overall
8.1
Food
8.2
Boarding
8.2
Comfort
8.6
Crew
9.1
Entertainment
7.6
Denver Air Connection
Overall
8.1
Food
8.2
Boarding
8.2
Comfort
8.6
Crew
9.1
Entertainment
7.6
Denver Air Connection
Overall
8.1
Food
8.2
Boarding
8.2
Comfort
8.6
Crew
9.1
Entertainment
7.6
Denver Air Connection
Overall
8.1
Food
8.2
Boarding
8.2
Comfort
8.6
Crew
9.1
Entertainment
7.6
Denver Air Connection
Overall
8.1
Food
8.2
Boarding
8.2
Comfort
8.6
Crew
9.1
Entertainment
7.6
Related info for your journey
Find useful and relevant information for your journey from Michigan to Illinois. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Browse thousands of different options on Cheapflights for your next trip
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Alternative routes for Michigan to Illinois
See prices for flight routes from nearby airports that may be better suited for you.
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 June 16, 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 June 16, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$91 | Average$302 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$97 | Average$290 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$98 | Average$313 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$101 | Average$297 | FlexibilityNo cancel fee | On-time69% |