$63+ 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 6/25. Fares are subject to change and may not be available on all flights or dates of travel.
DTW — ORD
Jun 19 — Jun 261
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 May 20, 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 May 20, 2026.
This Southwest deal was found by Cheapflights users on 5/18. Clicking the “Pick Dates” 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 6/105:35 am
DTW
- MDW
1 stop6h 25m
Southwest
Wed 6/1012:55 pm
MDW
- DTW
Nonstop1h 10m
Southwest
Deal found 5/18![Southwest logo]()
$147
This Kiwi.com deal was found by Cheapflights users on 5/19. Clicking the “Pick Dates” 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 8/256:45 am
DTW
- STL
1 stop11h 45m
Frontier
Fri 8/285:33 pm
STL
- DTW
1 stop6h 09m
Frontier
Deal found 5/19![Frontier logo]()
$155
This Southwest deal was found by Cheapflights users on 5/18. Clicking the “Pick Dates” 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 6/107:05 am
DTW
- MDW
1 stop4h 40m
Southwest
Wed 6/1711:50 am
MDW
- DTW
1 stop6h 40m
Southwest
Deal found 5/18![Southwest logo]()
$157
This Kiwi.com deal was found by Cheapflights users on 5/18. Clicking the “Pick Dates” 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 6/105:38 pm
DTW
- STL
1 stop24h 52m
Frontier
Tue 6/166:31 pm
STL
- DTW
1 stop21h 22m
Frontier
Deal found 5/18![Frontier logo]()
$158
This American Airlines deal was found by Cheapflights users on 5/19. Clicking the “Pick Dates” 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 11/45:33 am
DTW
- ORD
Nonstop1h 27m
American Airlines
Wed 11/115:49 pm
ORD
- DTW
Nonstop1h 24m
American Airlines
Deal found 5/19![American Airlines logo]()
$158
This Delta deal was found by Cheapflights users on 5/20. Clicking the “Pick Dates” 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 9/1710:00 am
DTW
- ORD
Nonstop1h 24m
Delta
Wed 9/238:55 am
ORD
- DTW
Nonstop1h 24m
Delta
Deal found 5/20![Delta logo]()
$164
This Southwest deal was found by Cheapflights users on 5/18. Clicking the “Pick Dates” 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 9/264:45 pm
DTW
- MDW
Nonstop1h 10m
Southwest
Tue 9/298:35 am
MDW
- DTW
Nonstop1h 20m
Southwest
Deal found 5/18![Southwest logo]()
$164
This United Airlines deal was found by Cheapflights users on 5/16. 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 6/236:00 am
DTW
- ORD
Nonstop1h 26m
United Airlines
Tue 6/239:29 pm
ORD
- DTW
Nonstop1h 28m
United Airlines
Deal found 5/16![United Airlines logo]()
$165
This Kiwi.com deal was found by Cheapflights users on 5/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/125:38 pm
DTW
- STL
1 stop16h 14m
Frontier
Tue 6/166:31 pm
STL
- DTW
2 stops16h 04m
Frontier
Deal found 5/19![Frontier logo]()
$167
This American Airlines deal was found by Cheapflights users on 5/20. Clicking the “Pick Dates” 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 6/178:58 pm
DTW
- ORD
Nonstop1h 37m
American Airlines
Wed 6/247:30 am
ORD
- DTW
Nonstop1h 33m
American Airlines
Deal found 5/20![American Airlines logo]()
$172
This American Airlines deal was found by Cheapflights users on 5/19. Clicking the “Pick Dates” 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 6/95:09 pm
GRR
- ORD
Nonstop1h 23m
American Airlines
Wed 6/177:35 am
ORD
- GRR
Nonstop1h 10m
American Airlines
Deal found 5/19![American Airlines logo]()
$177
This American Airlines deal was found by Cheapflights users on 5/16. 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.
Wed 9/167:16 am
GRR
- ORD
Nonstop1h 09m
American Airlines
Sat 9/191:10 pm
ORD
- GRR
Nonstop1h 00m
American Airlines
Deal found 5/16![American Airlines logo]()
$184
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 May 20, 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 May 20, 2026.
This Delta deal was found by Cheapflights users on 5/19. Clicking the “Pick Dates” 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 8/137:25 am
DTW
- ORD
Nonstop1h 31m
Delta
Tue 8/188:48 am
ORD
- DTW
Nonstop1h 31m
Delta
Deal found 5/19![Delta logo]()
$164
This Southwest deal was found by Cheapflights users on 5/19. Clicking the “Pick Dates” 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 7/44:05 pm
DTW
- MDW
Nonstop1h 15m
Southwest
Tue 7/72:35 pm
MDW
- DTW
1 stop6h 35m
Southwest
Deal found 5/19![Southwest logo]()
$206
This United Airlines deal was found by Cheapflights users on 5/19. Clicking the “Pick Dates” 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 6/112:24 pm
FNT
- ORD
Nonstop1h 30m
United Airlines
Sat 6/1311:29 am
ORD
- FNT
Nonstop1h 17m
United Airlines
Deal found 5/19![United Airlines logo]()
$239
This American Airlines deal was found by Cheapflights users on 5/19. Clicking the “Pick Dates” 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 6/163:48 pm
LAN
- ORD
Nonstop1h 22m
American Airlines
Tue 6/231:06 pm
ORD
- LAN
Nonstop1h 12m
American Airlines
Deal found 5/19![American Airlines logo]()
$239
This Delta deal was found by Cheapflights users on 5/16. 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 7/298:00 pm
DTW
- STL
Nonstop1h 37m
Delta
Tue 8/46:25 pm
STL
- DTW
Nonstop1h 35m
Delta
Deal found 5/16![Delta logo]()
$209
This Southwest deal was found by Cheapflights users on 5/17. Clicking the “Pick Dates” 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 6/166:30 pm
DTW
- STL
Nonstop1h 35m
Southwest
Tue 6/235:40 am
STL
- DTW
1 stop3h 20m
Southwest
Deal found 5/17![Southwest logo]()
$219
This United Airlines deal was found by Cheapflights users on 5/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/192:24 pm
FNT
- ORD
Nonstop1h 30m
United Airlines
Sun 6/2111:29 am
ORD
- FNT
Nonstop1h 17m
United Airlines
Deal found 5/18![United Airlines logo]()
$239
This American Airlines deal was found by Cheapflights users on 5/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/125:46 am
LAN
- ORD
Nonstop1h 07m
American Airlines
Mon 6/151:06 pm
ORD
- LAN
Nonstop1h 12m
American Airlines
Deal found 5/19![American Airlines logo]()
$239
This Delta deal was found by Cheapflights users on 5/15. 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 6/245:58 pm
DTW
- ORD
Nonstop1h 31m
Delta
Fri 6/267:01 am
ORD
- DTW
Nonstop1h 29m
Delta
Deal found 5/15![Delta logo]()
$226
This Southwest deal was found by Cheapflights users on 5/15. 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 6/177:50 pm
DTW
- MDW
Nonstop1h 15m
Southwest
Mon 6/225:20 pm
MDW
- DTW
1 stop5h 55m
Southwest
Deal found 5/15![Southwest logo]()
$236
This United Airlines deal was found by Cheapflights users on 5/16. 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.
Thu 7/232:27 pm
FNT
- ORD
Nonstop1h 30m
United Airlines
Sun 7/265:55 pm
ORD
- FNT
Nonstop1h 28m
United Airlines
Deal found 5/16![United Airlines logo]()
$239
This American Airlines deal was found by Cheapflights users on 5/15. 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.
Mon 6/153:48 pm
LAN
- ORD
Nonstop1h 22m
American Airlines
Sun 6/2110:05 pm
ORD
- LAN
Nonstop1h 12m
American Airlines
Deal found 5/15![American Airlines logo]()
$239
This Delta deal was found by Cheapflights users on 5/15. 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 6/175:58 pm
DTW
- ORD
Nonstop1h 31m
Delta
Fri 6/197:17 pm
ORD
- DTW
Nonstop1h 33m
Delta
Deal found 5/15![Delta logo]()
$226
This Southwest deal was found by Cheapflights users on 5/16. 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.
Wed 6/101:25 pm
DTW
- MDW
Nonstop1h 10m
Southwest
Mon 6/156:00 pm
MDW
- DTW
1 stop3h 25m
Southwest
Deal found 5/16![Southwest logo]()
$236
This United Airlines deal was found by Cheapflights users on 5/18. Clicking the “Pick Dates” 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.
Sun 9/66:31 pm
FNT
- ORD
Nonstop1h 29m
United Airlines
Sun 9/139:30 pm
ORD
- FNT
Nonstop1h 21m
United Airlines
Deal found 5/18![United Airlines logo]()
$239
This American Airlines deal was found by Cheapflights users on 5/17. Clicking the “Pick Dates” 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 6/85:30 am
FNT
- ORD
Nonstop1h 23m
American Airlines
Fri 6/2610:35 pm
ORD
- FNT
Nonstop1h 14m
American Airlines
Deal found 5/17![American Airlines logo]()
$240
This Delta deal was found by Cheapflights users on 5/17. Clicking the “Pick Dates” 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 7/1810:01 am
DTW
- ORD
Nonstop1h 27m
Delta
Tue 7/2111:30 am
ORD
- DTW
Nonstop1h 31m
Delta
Deal found 5/17![Delta logo]()
$226
This United Airlines deal was found by Cheapflights users on 5/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/176:31 pm
FNT
- ORD
Nonstop1h 28m
United Airlines
Sun 9/209:30 pm
ORD
- FNT
Nonstop1h 21m
United Airlines
Deal found 5/15![United Airlines logo]()
$239
This Delta deal was found by Cheapflights users on 5/15. 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 6/178:50 am
DTW
- MDW
Nonstop1h 24m
Delta
Mon 6/226:58 pm
MDW
- DTW
Nonstop1h 21m
Delta
Deal found 5/15![Delta logo]()
$226
This American Airlines deal was found by Cheapflights users on 5/18. Clicking the “Pick Dates” 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 6/75:30 am
FNT
- ORD
Nonstop1h 23m
American Airlines
Sat 6/1310:15 pm
ORD
- FNT
Nonstop1h 14m
American Airlines
Deal found 5/18![American Airlines logo]()
$254
This Southwest deal was found by Cheapflights users on 5/17. Clicking the “Pick Dates” 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 7/110:05 am
MDW
- STL
1 stop4h 40m
Southwest
Mon 7/65:35 pm
STL
- MDW
1 stop4h 20m
Southwest
Deal found 5/17![Southwest logo]()
$257
This United Airlines deal was found by Cheapflights users on 5/17. Clicking the “Pick Dates” 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 7/39:00 am
MBS
- ORD
Nonstop1h 31m
United Airlines
Tue 7/710:45 am
ORD
- MBS
Nonstop1h 27m
United Airlines
Deal found 5/17![United Airlines logo]()
$242
This Southwest deal was found by Cheapflights users on 5/19. Clicking the “Pick Dates” 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 6/263:30 pm
MDW
- STL
1 stop3h 40m
Southwest
Wed 7/16:15 pm
STL
- MDW
1 stop4h 55m
Southwest
Deal found 5/19![Southwest logo]()
$257
This American Airlines deal was found by Cheapflights users on 5/19. Clicking the “Pick Dates” 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 6/65:30 am
FNT
- ORD
Nonstop1h 23m
American Airlines
Mon 6/2210:35 pm
ORD
- FNT
Nonstop1h 14m
American Airlines
Deal found 5/19![American Airlines logo]()
$259
This Delta deal was found by Cheapflights users on 5/18. Clicking the “Pick Dates” 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 7/275:58 pm
GRR
- ORD
1 stop3h 33m
Delta
Wed 7/297:17 pm
ORD
- GRR
1 stop3h 38m
Delta
Deal found 5/18![Delta logo]()
$240
This United Airlines deal was found by Cheapflights users on 5/19. Clicking the “Pick Dates” 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 7/109:00 am
MBS
- ORD
Nonstop1h 31m
United Airlines
Sun 7/1210:45 am
ORD
- MBS
Nonstop1h 27m
United Airlines
Deal found 5/19![United Airlines logo]()
$242
This Southwest deal was found by Cheapflights users on 5/19. Clicking the “Pick Dates” 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 9/194:45 pm
DTW
- MDW
Nonstop1h 10m
Southwest
Sun 9/278:50 am
MDW
- DTW
2 stops9h 00m
Southwest
Deal found 5/19![Southwest logo]()
$268
This United Airlines deal was found by Cheapflights users on 5/19. Clicking the “Pick Dates” 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 7/76:25 pm
GRR
- ORD
Nonstop1h 15m
United Airlines
Tue 7/1410:35 am
ORD
- GRR
Nonstop1h 13m
United Airlines
Deal found 5/19![United Airlines logo]()
$247
This Delta deal was found by Cheapflights users on 5/18. Clicking the “Pick Dates” 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 8/148:54 am
DTW
- MDW
Nonstop1h 23m
Delta
Mon 8/179:24 am
MDW
- DTW
Nonstop1h 16m
Delta
Deal found 5/18![Delta logo]()
$253
This Delta deal was found by Cheapflights users on 5/17. Clicking the “Pick Dates” 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 9/56:15 pm
DTW
- MDW
Nonstop1h 16m
Delta
Mon 9/79:30 am
MDW
- DTW
Nonstop1h 10m
Delta
Deal found 5/17![Delta logo]()
$253
Last-minute flights from Michigan to IllinoisDiscover last-minute flight deals from Michigan to Illinois. Data last updated May 20, 2026 and is based on user searches.
Discover last-minute flight deals from Michigan to Illinois. Data last updated May 20, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 5/19. Clicking the “Pick Dates” 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 6/95:09 pm
GRR
- ORD
Nonstop1h 23m
American Airlines
Wed 6/177:35 am
ORD
- GRR
Nonstop1h 10m
American Airlines
Deal found 5/19![American Airlines logo]()
$177
This Delta deal was found by Cheapflights users on 5/18. Clicking the “Pick Dates” 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 6/98:15 am
GRR
- ORD
1 stop5h 49m
Delta
Wed 6/178:52 am
ORD
- GRR
1 stop4h 16m
Delta
Deal found 5/18![Delta logo]()
$197
This Booking.com deal was found by Cheapflights users on 5/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/98:52 am
DTW
- ORD
1 stop16h 56m
Frontier
Wed 6/106:55 am
ORD
- DTW
1 stop8h 58m
Frontier
Deal found 5/18![Frontier logo]()
$201
This Southwest deal was found by Cheapflights users on 5/18. Clicking the “Pick Dates” 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 6/105:35 am
DTW
- MDW
1 stop6h 25m
Southwest
Wed 6/1012:55 pm
MDW
- DTW
Nonstop1h 10m
Southwest
Deal found 5/18![Southwest logo]()
$147
This Kiwi.com deal was found by Cheapflights users on 5/18. Clicking the “Pick Dates” 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 6/105:38 pm
DTW
- STL
1 stop24h 52m
Frontier
Tue 6/166:31 pm
STL
- DTW
1 stop21h 22m
Frontier
Deal found 5/18![Frontier logo]()
$158
This Flightnetwork deal was found by Cheapflights users on 5/15. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/108:52 am
DTW
- ORD
1 stop16h 56m
Frontier
Wed 6/176:55 am
ORD
- DTW
1 stop8h 58m
Frontier
Deal found 5/15![Frontier logo]()
$200
This Kiwi.com deal was found by Cheapflights users on 5/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/125:38 pm
DTW
- STL
1 stop16h 14m
Frontier
Tue 6/166:31 pm
STL
- DTW
2 stops16h 04m
Frontier
Deal found 5/19![Frontier logo]()
$167
This Frontier deal was found by Cheapflights users on 5/17. Clicking the “Pick Dates” 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 6/162:02 pm
DTW
- ORD
1 stop6h 48m
Frontier
Tue 6/231:29 pm
ORD
- DTW
1 stop10h 15m
Frontier
Deal found 5/17![Frontier logo]()
$189
This American Airlines deal was found by Cheapflights users on 5/19. Clicking the “Pick Dates” 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 6/168:58 pm
DTW
- ORD
Nonstop1h 37m
American Airlines
Tue 6/237:30 am
ORD
- DTW
Nonstop1h 33m
American Airlines
Deal found 5/19![American Airlines logo]()
$198
This American Airlines deal was found by Cheapflights users on 5/20. Clicking the “Pick Dates” 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 6/178:58 pm
DTW
- ORD
Nonstop1h 37m
American Airlines
Wed 6/247:30 am
ORD
- DTW
Nonstop1h 33m
American Airlines
Deal found 5/20![American Airlines logo]()
$172
This United Airlines deal was found by Cheapflights users on 5/16. 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 6/236:00 am
DTW
- ORD
Nonstop1h 26m
United Airlines
Tue 6/239:29 pm
ORD
- DTW
Nonstop1h 28m
United Airlines
Deal found 5/16![United Airlines logo]()
$165
This Southwest deal was found by Cheapflights users on 5/16. 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 6/231:25 pm
DTW
- MDW
Nonstop1h 10m
Southwest
Tue 6/236:10 pm
MDW
- DTW
Nonstop1h 10m
Southwest
Deal found 5/16![Southwest logo]()
$197
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 May 20, 2026.
Search for one-way flight options from Michigan to Illinois. Find affordable one-way fares based on user searches. Data last updated May 20, 2026.
This Kiwi.com deal was found by Cheapflights users on 5/20. Clicking the “Pick Dates” 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 6/252:02 pm
DTW
- STL
1 stop19h 50m
Frontier
Deal found 5/20![Frontier logo]()
$63
This Kiwi.com deal was found by Cheapflights users on 5/19. Clicking the “Pick Dates” 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 8/146:10 am
DTW
- STL
1 stop27h 47m
Frontier
Deal found 5/19![Frontier logo]()
$65
This Southwest deal was found by Cheapflights users on 5/17. Clicking the “Pick Dates” 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 7/149:10 pm
MDW
- STL
Nonstop1h 15m
Southwest
Deal found 5/17![Southwest logo]()
$69
This Delta deal was found by Cheapflights users on 5/17. Clicking the “Pick Dates” 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 8/117:50 pm
DTW
- ORD
Nonstop1h 32m
Delta
Deal found 5/17![Delta logo]()
$69
This Delta deal was found by Cheapflights users on 5/17. Clicking the “Pick Dates” 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 7/88:45 am
DTW
- MDW
Nonstop1h 23m
Delta
Deal found 5/17![Delta logo]()
$69
This American Airlines deal was found by Cheapflights users on 5/20. Clicking the “Pick Dates” 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 6/1611:00 pm
ORD
- STL
Nonstop1h 16m
American Airlines
Deal found 5/20![American Airlines logo]()
$69
This Kiwi.com deal was found by Cheapflights users on 5/15. 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 8/116:00 am
MDW
- STL
1 stop26h 57m
Frontier
Deal found 5/15![Frontier logo]()
$70
This Kiwi.com deal was found by Cheapflights users on 5/16. 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.
Tue 9/1512:03 pm
MDW
- STL
1 stop21h 37m
Frontier
Deal found 5/16![Frontier logo]()
$73
This Kiwi.com deal was found by Cheapflights users on 5/16. 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.
Tue 9/156:30 am
ORD
- STL
1 stop27h 10m
Frontier
Deal found 5/16![Frontier logo]()
$73
This Delta deal was found by Cheapflights users on 5/17. Clicking the “Pick Dates” 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 7/141:18 pm
MDW
- STL
1 stop4h 01m
Delta
Deal found 5/17![Delta logo]()
$79
This Southwest deal was found by Cheapflights users on 5/17. Clicking the “Pick Dates” 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 6/238:10 pm
DTW
- MDW
1 stop4h 00m
Southwest
Deal found 5/17![Southwest logo]()
$79
This Delta deal was found by Cheapflights users on 5/18. Clicking the “Pick Dates” 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 6/162:07 pm
ORD
- STL
1 stop6h 32m
Delta
Deal found 5/18![Delta logo]()
$79
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 May 20, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $147 (Southwest) |
One-way from | $63 (Kiwi.com) |
Popular in | May |
Cheapest in | September |
Average price | $439 |
Good round-trip deal | $87 or less |
Good one-way deal | $65 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 May 20, 2026.
Use the filters below to find and compare flights from Michigan to Illinois that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
DetroitChicago
DTW - ORD
DTWORD
Detroit Metropolitan Wayne County
Thu 8/13
7:25 am-7:56 am
Nonstop1h 31m
Chicago O'Hare Intl
Tue 8/18
8:48 am-11:19 am
Nonstop1h 31m
$164
DetroitChicago
DTW - MDW
DTWMDW
Detroit Metropolitan Wayne County
Sat 7/4
4:05 pm-4:20 pm
Nonstop1h 15m
Chicago Midway
Tue 7/7
2:35 pm-10:10 pm
1 stop6h 35m
$206
DetroitSt. Louis
DTW - STL
DTWSTL
Detroit Metropolitan Wayne County
Wed 7/29
8:00 pm-8:37 pm
Nonstop1h 37m
Lambert-St Louis
Tue 8/4
6:25 pm-9:00 pm
Nonstop1h 35m
$209
DetroitSt. Louis
DTW - STL
DTWSTL
Detroit Metropolitan Wayne County
Tue 6/16
6:30 pm-7:05 pm
Nonstop1h 35m
Lambert-St Louis
Tue 6/23
5:40 am-10:00 am
1 stop3h 20m
$219
DetroitChicago
DTW - ORD
DTWORD
Detroit Metropolitan Wayne County
Wed 6/24
5:58 pm-6:29 pm
Nonstop1h 31m
Chicago O'Hare Intl
Fri 6/26
7:01 am-9:30 am
Nonstop1h 29m
$226
DetroitChicago
DTW - ORD
DTWORD
Detroit Metropolitan Wayne County
Wed 6/17
5:58 pm-6:29 pm
Nonstop1h 31m
Chicago O'Hare Intl
Fri 6/19
7:17 pm-9:50 pm
Nonstop1h 33m
$226
DetroitChicago
DTW - ORD
DTWORD
Detroit Metropolitan Wayne County
Sat 7/18
10:01 am-10:28 am
Nonstop1h 27m
Chicago O'Hare Intl
Tue 7/21
11:30 am-2:01 pm
Nonstop1h 31m
$226
DetroitChicago
DTW - MDW
DTWMDW
Detroit Metropolitan Wayne County
Wed 6/17
8:50 am-9:14 am
Nonstop1h 24m
Chicago Midway
Mon 6/22
6:58 pm-9:19 pm
Nonstop1h 21m
$226
DetroitChicago
DTW - MDW
DTWMDW
Detroit Metropolitan Wayne County
Wed 6/17
7:50 pm-8:05 pm
Nonstop1h 15m
Chicago Midway
Mon 6/22
5:20 pm-12:15 am
1 stop5h 55m
$236
DetroitChicago
DTW - MDW
DTWMDW
Detroit Metropolitan Wayne County
Wed 6/10
1:25 pm-1:35 pm
Nonstop1h 10m
Chicago Midway
Mon 6/15
6:00 pm-10:25 pm
1 stop3h 25m
$236
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.
DTW-STL
MDW-STL
DTW-ORD
DTW-MDW
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
DTW-STL
MDW-STL
DTW-ORD
DTW-MDW
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 May 20, 2026.
Unlike in the evening, when flights are generally more expensive, you can save up to 17% 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 May 20, 2026.
The most flights from USMI to USIL are scheduled on a Wednesday (93 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (11 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 May 16, 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 May 20, 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
Food
8.2
Comfort
8.6
Crew
9.1
Overall
8.1
Denver Air Connection
Denver Air Connection
Entertainment
7.6
Boarding
8.2
Food
8.2
Comfort
8.6
Crew
9.1
Overall
8.1
Denver Air Connection
Entertainment
7.6
Boarding
8.2
Food
8.2
Comfort
8.6
Crew
9.1
Overall
8.1
Denver Air Connection
Entertainment
7.6
Boarding
8.2
Food
8.2
Comfort
8.6
Crew
9.1
Overall
8.1
Denver Air Connection
Entertainment
7.6
Boarding
8.2
Food
8.2
Comfort
8.6
Crew
9.1
Overall
8.1
Denver Air Connection
Entertainment
7.6
Boarding
8.2
Food
8.2
Comfort
8.6
Crew
9.1
Overall
8.1
Related info for your journey
Find useful and relevant information for your journey from Michigan to Illinois. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes
Complete your trip
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Top destinations
Alternative routes for Michigan to Illinois
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Illinois by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Michigan to Illinois by cabin class
Find flights from Michigan to Illinois, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Michigan and Illinois flights
Browse other Michigan and Illinois flight options. Last updated on May 20, 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 May 20, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$91 | Average$295 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$97 | Average$307 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$97 | Average$294 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$97 | Average$313 | FlexibilityNo cancel fee | On-time63% |