$49+ Cheap flights from Illinois to Michigan
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 5/12. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — DTW
May 17 — May 241
Round-trip
1 adult, Economy
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Find cheap flights from Illinois to Michigan with Cheapflights
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Cheapest flights from Illinois to MichiganExplore the most affordable flight options available from Illinois to Michigan. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 17, 2026.
Explore the most affordable flight options available from Illinois to Michigan. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 17, 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.
Mon 6/15:27 pm
STL
- DTW
1 stop6h 12m
Frontier
Fri 6/56:05 pm
DTW
- STL
1 stop15h 50m
Frontier
Deal found 4/13![Frontier logo]()
$133
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 5/56:41 pm
STL
- DTW
1 stop5h 18m
Frontier
Sat 5/912:40 pm
DTW
- STL
1 stop12h 41m
Frontier
Deal found 4/14![Frontier logo]()
$140
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/95:27 pm
STL
- DTW
1 stop6h 12m
Frontier
Sun 5/101:59 pm
DTW
- STL
1 stop19h 56m
Frontier
Deal found 4/15![Frontier logo]()
$144
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.
Thu 5/76:55 pm
STL
- DTW
1 stop21h 25m
Frontier
Sun 5/101:59 pm
DTW
- STL
1 stop19h 56m
Frontier
Deal found 4/13![Frontier logo]()
$147
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/109:45 pm
ORD
- GRR
Nonstop1h 12m
United Airlines
Tue 8/257:15 am
GRR
- ORD
Nonstop1h 17m
United Airlines
Deal found 4/14![United Airlines logo]()
$157
This Kiwi.com deal was found by Cheapflights users on 4/16. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/146:55 pm
STL
- DTW
1 stop21h 25m
Frontier
Mon 5/186:05 pm
DTW
- STL
1 stop24h 28m
Frontier
Deal found 4/16![Frontier logo]()
$158
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.
Fri 5/295:27 pm
STL
- DTW
1 stop6h 12m
Frontier
Mon 6/16:05 pm
DTW
- STL
1 stop24h 28m
Frontier
Deal found 4/13![Frontier logo]()
$163
This Kiwi.com deal was found by Cheapflights users on 4/16. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/286:33 pm
STL
- DTW
1 stop5h 05m
Frontier
Sun 5/316:50 am
DTW
- STL
1 stop27h 05m
Frontier
Deal found 4/16![Frontier logo]()
$164
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.
Thu 6/46:33 pm
STL
- DTW
1 stop12h 19m
Multiple Airlines
Fri 6/56:05 pm
DTW
- STL
1 stop15h 50m
Multiple Airlines
Deal found 4/12![Multiple Airlines logo]()
$165
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/97:00 am
ORD
- GRR
1 stop3h 18m
Delta
Sat 5/162:21 pm
GRR
- ORD
1 stop3h 08m
Delta
Deal found 4/15![Delta logo]()
$167
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/28:17 pm
STL
- ORD
1 stop13h 28m
Frontier
Sat 5/99:37 pm
ORD
- STL
1 stop21h 46m
Frontier
Deal found 4/14![Frontier logo]()
$171
This Delta deal was found by Cheapflights users on 4/16. 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.
Sat 8/226:30 am
STL
- ORD
2 stops6h 09m
Delta
Thu 9/38:55 am
ORD
- STL
1 stop4h 22m
Delta
Deal found 4/16![Delta logo]()
$172
Best flights from Illinois to MichiganDiscover carefully curated flight deals from Illinois to Michigan that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 17, 2026.
Discover carefully curated flight deals from Illinois to Michigan that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 17, 2026.
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/109:45 pm
ORD
- GRR
Nonstop1h 12m
United Airlines
Tue 8/257:15 am
GRR
- ORD
Nonstop1h 17m
United Airlines
Deal found 4/14![United Airlines logo]()
$157
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/137:00 am
ORD
- GRR
1 stop5h 40m
Delta
Wed 5/202:21 pm
GRR
- ORD
1 stop4h 44m
Delta
Deal found 4/15![Delta logo]()
$167
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.
Thu 5/75:40 am
STL
- MDW
Nonstop1h 10m
Southwest
Mon 5/1111:40 am
MDW
- STL
Nonstop1h 15m
Southwest
Deal found 4/15![Southwest logo]()
$191
This Expedia deal was found by Cheapflights users on 4/16. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/245:50 am
ORD
- DTW
1 stop9h 28m
Frontier
Sun 4/2610:09 am
DTW
- ORD
1 stop13h 52m
Frontier
Deal found 4/16![Frontier logo]()
$222
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/2210:27 pm
ORD
- FNT
Nonstop1h 16m
American Airlines
Mon 5/2510:55 am
FNT
- ORD
Nonstop1h 34m
American Airlines
Deal found 4/15![American Airlines logo]()
$239
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/257:01 am
ORD
- GRR
1 stop6h 07m
Delta
Sun 7/55:55 pm
GRR
- ORD
1 stop3h 36m
Delta
Deal found 4/15![Delta logo]()
$187
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 5/117:05 pm
MDW
- DTW
Nonstop1h 05m
Southwest
Mon 5/184:00 pm
DTW
- MDW
1 stop6h 00m
Southwest
Deal found 4/13![Southwest logo]()
$201
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.
Tue 5/126:21 am
STL
- MDW
2 stops6h 21m
Delta
Sat 5/167:13 pm
MDW
- STL
1 stop4h 08m
Delta
Deal found 4/13![Delta logo]()
$189
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.
Thu 5/78:00 am
MDW
- DTW
Nonstop1h 10m
Southwest
Mon 5/118:15 pm
DTW
- MDW
1 stop3h 30m
Southwest
Deal found 4/13![Southwest logo]()
$201
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.
Tue 5/1210:45 am
ORD
- GRR
Nonstop1h 06m
United Airlines
Wed 5/139:20 pm
GRR
- ORD
Nonstop1h 01m
United Airlines
Deal found 4/12![United Airlines logo]()
$227
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/1410:19 am
STL
- ORD
1 stop6h 10m
Delta
Sat 5/165:41 pm
ORD
- STL
1 stop5h 40m
Delta
Deal found 4/15![Delta logo]()
$189
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/1010:10 am
ORD
- FNT
Nonstop1h 19m
American Airlines
Sun 5/177:33 pm
FNT
- ORD
Nonstop1h 42m
American Airlines
Deal found 4/12![American 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.
Sat 5/167:50 am
MDW
- DTW
Nonstop1h 10m
Southwest
Sat 5/163:40 pm
DTW
- MDW
1 stop5h 25m
Southwest
Deal found 4/12![Southwest logo]()
$201
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 5/272:00 pm
ORD
- GRR
1 stop5h 45m
Delta
Sat 5/305:30 am
GRR
- ORD
1 stop5h 59m
Delta
Deal found 4/12![Delta logo]()
$194
This American Airlines deal was found by Cheapflights users on 4/16. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/28:01 am
ORD
- FNT
Nonstop1h 19m
American Airlines
Sun 7/55:30 am
FNT
- ORD
Nonstop1h 19m
American Airlines
Deal found 4/16![American Airlines logo]()
$239
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.
Mon 5/118:00 am
MDW
- DTW
Nonstop1h 10m
Southwest
Sat 5/166:25 pm
DTW
- MDW
1 stop5h 10m
Southwest
Deal found 4/15![Southwest logo]()
$201
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.
Mon 6/86:30 am
ORD
- GRR
Nonstop1h 08m
United Airlines
Tue 6/163:37 pm
GRR
- ORD
Nonstop1h 20m
United Airlines
Deal found 4/12![United Airlines logo]()
$244
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.
Sat 5/302:15 pm
MDW
- DTW
1 stop6h 10m
Southwest
Sat 6/68:55 am
DTW
- MDW
Nonstop1h 15m
Southwest
Deal found 4/15![Southwest logo]()
$201
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.
Mon 6/227:01 am
ORD
- DTW
Nonstop1h 29m
Delta
Tue 6/235:58 pm
DTW
- ORD
Nonstop1h 31m
Delta
Deal found 4/13![Delta logo]()
$206
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.
Tue 6/99:45 pm
ORD
- GRR
Nonstop1h 12m
United Airlines
Wed 6/107:15 am
GRR
- ORD
Nonstop1h 13m
United Airlines
Deal found 4/15![United Airlines logo]()
$262
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 5/111:35 pm
STL
- MDW
1 stop5h 35m
Southwest
Thu 5/1411:40 am
MDW
- STL
Nonstop1h 15m
Southwest
Deal found 4/13![Southwest logo]()
$201
This American Airlines deal was found by Cheapflights users on 4/16. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/19:09 pm
ORD
- FNT
Nonstop1h 17m
American Airlines
Sun 5/35:36 am
FNT
- ORD
Nonstop1h 24m
American Airlines
Deal found 4/16![American Airlines logo]()
$269
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.
Sat 5/97:00 am
ORD
- GRR
1 stop3h 18m
Delta
Sat 5/1612:10 pm
GRR
- ORD
1 stop5h 19m
Delta
Deal found 4/12![Delta logo]()
$211
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 5/77:45 am
STL
- ORD
Nonstop1h 27m
United Airlines
Mon 5/117:45 pm
ORD
- STL
Nonstop1h 28m
United Airlines
Deal found 4/12![United Airlines logo]()
$263
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 4/2910:10 am
ORD
- FNT
Nonstop1h 19m
American Airlines
Sun 5/35:36 am
FNT
- ORD
Nonstop1h 24m
American Airlines
Deal found 4/14![American Airlines logo]()
$269
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 5/282:10 pm
MDW
- DTW
2 stops8h 20m
Southwest
Thu 6/48:40 am
DTW
- MDW
Nonstop1h 15m
Southwest
Deal found 4/12![Southwest logo]()
$206
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 5/285:19 pm
ORD
- GRR
1 stop5h 25m
Delta
Thu 6/45:45 pm
GRR
- ORD
1 stop3h 29m
Delta
Deal found 4/13![Delta logo]()
$211
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.
Fri 5/157:45 am
STL
- ORD
Nonstop1h 27m
United Airlines
Mon 5/187:45 pm
ORD
- STL
Nonstop1h 28m
United Airlines
Deal found 4/12![United Airlines logo]()
$264
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.
Thu 5/710:49 am
STL
- ORD
1 stop6h 07m
Delta
Mon 5/115:41 pm
ORD
- STL
1 stop5h 40m
Delta
Deal found 4/12![Delta logo]()
$211
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.
Mon 5/112:40 pm
ORD
- DTW
1 stop6h 40m
Southwest
Sat 5/166:15 am
DTW
- ORD
1 stop10h 15m
Southwest
Deal found 4/15![Southwest logo]()
$216
Last-minute flights from Illinois to MichiganDiscover last-minute flight deals from Illinois to Michigan. Data last updated April 17, 2026 and is based on user searches.
Discover last-minute flight deals from Illinois to Michigan. Data last updated April 17, 2026 and is based on user searches.
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/28:17 pm
STL
- ORD
1 stop13h 28m
Frontier
Sat 5/99:37 pm
ORD
- STL
1 stop21h 46m
Frontier
Deal found 4/14![Frontier logo]()
$171
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 5/56:41 pm
STL
- DTW
1 stop5h 18m
Frontier
Sat 5/912:40 pm
DTW
- STL
1 stop12h 41m
Frontier
Deal found 4/14![Frontier logo]()
$140
This Kiwi.com deal was found by Cheapflights users on 4/16. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/65:27 pm
STL
- MDW
1 stop17h 42m
Frontier
Wed 5/133:07 pm
MDW
- STL
1 stop23h 41m
Frontier
Deal found 4/16![Frontier logo]()
$175
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.
Thu 5/76:55 pm
STL
- DTW
1 stop21h 25m
Frontier
Sun 5/101:59 pm
DTW
- STL
1 stop19h 56m
Frontier
Deal found 4/13![Frontier logo]()
$147
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/95:27 pm
STL
- DTW
1 stop6h 12m
Frontier
Sun 5/101:59 pm
DTW
- STL
1 stop19h 56m
Frontier
Deal found 4/15![Frontier logo]()
$144
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/97:00 am
ORD
- GRR
1 stop3h 18m
Delta
Sat 5/162:21 pm
GRR
- ORD
1 stop3h 08m
Delta
Deal found 4/15![Delta logo]()
$167
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/96:21 am
STL
- ORD
2 stops6h 35m
Delta
Sun 5/106:24 am
ORD
- STL
1 stop4h 08m
Delta
Deal found 4/15![Delta logo]()
$172
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/129:01 am
ORD
- GRR
Nonstop1h 07m
United Airlines
Tue 5/199:00 am
GRR
- ORD
Nonstop1h 10m
United Airlines
Deal found 4/14![United Airlines logo]()
$157
This Kiwi.com deal was found by Cheapflights users on 4/16. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/146:55 pm
STL
- DTW
1 stop21h 25m
Frontier
Mon 5/186:05 pm
DTW
- STL
1 stop24h 28m
Frontier
Deal found 4/16![Frontier logo]()
$158
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/276:54 am
ORD
- GRR
Nonstop1h 11m
American Airlines
Sat 5/305:43 pm
GRR
- ORD
Nonstop1h 20m
American Airlines
Deal found 4/12![American Airlines logo]()
$174
This Kiwi.com deal was found by Cheapflights users on 4/16. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/286:33 pm
STL
- DTW
1 stop5h 05m
Frontier
Sun 5/316:50 am
DTW
- STL
1 stop27h 05m
Frontier
Deal found 4/16![Frontier logo]()
$164
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.
Fri 5/295:27 pm
STL
- DTW
1 stop6h 12m
Frontier
Mon 6/16:05 pm
DTW
- STL
1 stop24h 28m
Frontier
Deal found 4/13![Frontier logo]()
$163
One-way flights from Illinois to MichiganSearch for one-way flight options from Illinois to Michigan. Find affordable one-way fares based on user searches. Data last updated April 17, 2026.
Search for one-way flight options from Illinois to Michigan. Find affordable one-way fares based on user searches. Data last updated April 17, 2026.
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.
Tue 5/125:35 am
STL
- MDW
Nonstop1h 10m
Southwest
Deal found 4/12![Southwest 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.
Tue 5/125:51 am
STL
- ORD
Nonstop1h 30m
American Airlines
Deal found 4/13![American Airlines logo]()
$49
This Southwest deal was found by Cheapflights users on 4/16. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/122:40 pm
ORD
- DTW
1 stop5h 55m
Southwest
Deal found 4/16![Southwest logo]()
$59
This Southwest deal was found by Cheapflights users on 4/16. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/124:40 pm
MDW
- DTW
1 stop3h 35m
Southwest
Deal found 4/16![Southwest logo]()
$59
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.
Tue 5/125:45 am
STL
- ORD
1 stop5h 25m
Southwest
Deal found 4/15![Southwest logo]()
$59
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.
Tue 5/126:33 pm
STL
- DTW
1 stop5h 06m
Frontier
Deal found 4/13![Frontier logo]()
$63
This Southwest deal was found by Cheapflights users on 4/16. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/1910:10 am
MDW
- DTW
2 stops7h 10m
Southwest
Deal found 4/16![Southwest logo]()
$64
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/135:27 pm
STL
- DTW
1 stop18h 37m
Frontier
Deal found 4/15![Frontier logo]()
$65
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/286:33 pm
STL
- DTW
1 stop5h 05m
Frontier
Deal found 4/15![Frontier logo]()
$67
This Expedia 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/69:00 am
ORD
- DTW
1 stop7h 20m
Frontier
Deal found 4/15![Frontier logo]()
$70
This Frontier 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/95:27 pm
STL
- DTW
1 stop6h 12m
Frontier
Deal found 4/13![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.
Sat 5/96:00 am
MDW
- DTW
1 stop6h 42m
Frontier
Deal found 4/14![Frontier logo]()
$70
Find flight deals from Illinois to Michigan
Keep the following information in mind while searching for Illinois to Michigan flight deals. Data was last updated April 17, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $133 (Kiwi.com) |
One-way from | $49 (Southwest) |
Popular in | March |
Cheapest in | May |
Average price | $356 |
Good round-trip deal | $84 or less |
Good one-way deal | $74 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Illinois to Michigan 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 17, 2026.
Use the filters below to find and compare flights from Illinois to Michigan that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
ChicagoGrand Rapids
ORD - GRR
ORDGRR
Chicago O'Hare Intl
Wed 6/10
9:45 pm-11:57 pm
Nonstop1h 12m
Grand Rapids Gerald R. Ford Intl
Tue 8/25
7:15 am-7:32 am
Nonstop1h 17m
$157
ChicagoGrand Rapids
ORD - GRR
ORDGRR
Chicago O'Hare Intl
Wed 5/13
7:00 am-1:40 pm
1 stop5h 40m
Grand Rapids Gerald R. Ford Intl
Wed 5/20
2:21 pm-6:05 pm
1 stop4h 44m
$167
ChicagoGrand Rapids
ORD - GRR
ORDGRR
Chicago O'Hare Intl
Thu 6/25
7:01 am-2:08 pm
1 stop6h 07m
Grand Rapids Gerald R. Ford Intl
Sun 7/5
5:55 pm-8:31 pm
1 stop3h 36m
$187
St. LouisChicago
STL - MDW
STLMDW
Lambert-St Louis
Tue 5/12
6:21 am-12:42 pm
2 stops6h 21m
Chicago Midway
Sat 5/16
7:13 pm-11:21 pm
1 stop4h 08m
$189
St. LouisChicago
STL - ORD
STLORD
Lambert-St Louis
Thu 5/14
10:19 am-4:29 pm
1 stop6h 10m
Chicago O'Hare Intl
Sat 5/16
5:41 pm-11:21 pm
1 stop5h 40m
$189
St. LouisChicago
STL - MDW
STLMDW
Lambert-St Louis
Thu 5/7
5:40 am-6:50 am
Nonstop1h 10m
Chicago Midway
Mon 5/11
11:40 am-12:55 pm
Nonstop1h 15m
$191
ChicagoGrand Rapids
ORD - GRR
ORDGRR
Chicago O'Hare Intl
Wed 5/27
2:00 pm-8:45 pm
1 stop5h 45m
Grand Rapids Gerald R. Ford Intl
Sat 5/30
5:30 am-10:29 am
1 stop5h 59m
$194
ChicagoDetroit
MDW - DTW
MDWDTW
Chicago Midway
Mon 5/11
7:05 pm-9:10 pm
Nonstop1h 05m
Detroit Metropolitan Wayne County
Mon 5/18
4:00 pm-9:00 pm
1 stop6h 00m
$201
ChicagoDetroit
MDW - DTW
MDWDTW
Chicago Midway
Thu 5/7
8:00 am-10:10 am
Nonstop1h 10m
Detroit Metropolitan Wayne County
Mon 5/11
8:15 pm-10:45 pm
1 stop3h 30m
$201
ChicagoDetroit
MDW - DTW
MDWDTW
Chicago Midway
Sat 5/16
7:50 am-10:00 am
Nonstop1h 10m
Detroit Metropolitan Wayne County
Sat 5/16
3:40 pm-8:05 pm
1 stop5h 25m
$201
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Illinois to Michigan
Have a flexible travel schedule? Discover the best time to fly to Michigan from Illinois with our price prediction graph.
STL-MDW
MDW-DTW
STL-DTW
STL-ORD
ORD-DTW
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 Illinois to Michigan
USIL-USMI
STL-MDW
MDW-DTW
STL-DTW
STL-ORD
What is the cheapest month to book a flight from Illinois to Michigan?
Currently, May is the cheapest month in which you can book a flight from Illinois to Michigan (average of $48). Flying from Illinois to Michigan in February is currently the most expensive (average of $91). 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 IL to MI?
Find hourly flight availability from Illinois to Michigan. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 17, 2026.
One of the essential ways to save on airfare from Illinois to Michigan is to remain as flexible as possible. Flights that are at noon tend to be the most expensive. A flight in the morning could potentially save you up to 25% on airfare.
What is the cheapest day to fly from Illinois to Michigan?
Use this chart to determine the cheapest time to fly round-trip from Illinois to Michigan. Price data was last updated on April 11, 2026.
Travelers seeking maximum savings on their Illinois to Michigan flight should consider departing on Saturday evenings when fares are most often at their lowest. Saturday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.
Weekly flight availability from Illinois to Michigan
Explore weekly flight availability from Illinois to Michigan. 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 17, 2026.
The most flights from USIL to USMI are scheduled on a Thursday (91 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (54 on average).
How much does it cost to fly round-trip from Illinois to Michigan?
Reviews of airlines servicing Michigan
Get insights into the airlines that provide service to Michigan. 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 Michigan. Reviews last updated April 17, 2026.
Read through reviews of airlines operating flights from Illinois to Michigan, such as Southwest,Delta, andContour. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Overall
8.0
Boarding
8.1
Comfort
8.0
Crew
8.6
Entertainment
7.5
Food
7.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Overall
8.0
Boarding
8.1
Comfort
8.0
Crew
8.6
Entertainment
7.5
Food
7.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Overall
8.0
Boarding
8.1
Comfort
8.0
Crew
8.6
Entertainment
7.5
Food
7.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Overall
8.0
Boarding
8.1
Comfort
8.0
Crew
8.6
Entertainment
7.5
Food
7.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Overall
8.0
Boarding
8.1
Comfort
8.0
Crew
8.6
Entertainment
7.5
Food
7.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Overall
8.0
Boarding
8.1
Comfort
8.0
Crew
8.6
Entertainment
7.5
Food
7.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Related info for your journey
Find useful and relevant information for your journey from Illinois to Michigan. 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.
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Alternative routes for Illinois to Michigan
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Michigan by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Illinois to Michigan by cabin class
Find flights from Illinois to Michigan, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Illinois and Michigan flights
Browse other Illinois and Michigan flight options. Last updated on April 17, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Find a return flight route from Michigan
Find the right flight back to Illinois after your stay in Michigan
Illinois to Michigan flights
Consider these flights traveling from Illinois to Michigan.
Top 5 airlines flying from Illinois to Michigan
Discover the top 5 airlines that operate flights from Illinois to Michigan. 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 17, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$91 | Average$329 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$91 | Average$299 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$97 | Average$313 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$133 | Average$337 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$144 | Average$178 | FlexibilityNo cancel fee | On-time62% |