$59+ 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 10 — May 171
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 10, 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 10, 2026.
This Kiwi.com deal was found by Cheapflights users on 4/9. Clicking the “Pick Dates” 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
- DTW
1 stop6h 12m
Frontier
Tue 5/126:50 am
DTW
- STL
1 stop11h 43m
Frontier
Deal found 4/9![Frontier logo]()
$128
This Kiwi.com deal was found by Cheapflights users on 4/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/48:23 pm
STL
- DTW
1 stop15h 13m
Frontier
Mon 5/116:05 pm
DTW
- STL
1 stop24h 28m
Frontier
Deal found 4/6![Frontier logo]()
$129
This Kiwi.com deal was found by Cheapflights users on 4/9. Clicking the “Pick Dates” 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 4/9![Frontier logo]()
$133
This Kiwi.com deal was found by Cheapflights users on 4/6. Clicking the “Pick Dates” 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
- DTW
1 stop6h 12m
Frontier
Wed 5/136:05 pm
DTW
- STL
1 stop23h 49m
Frontier
Deal found 4/6![Frontier logo]()
$138
This Travelocity deal was found by Cheapflights users on 4/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/85:27 pm
STL
- DTW
1 stop6h 12m
Frontier
Mon 5/117:55 am
DTW
- STL
1 stop12h 28m
Frontier
Deal found 4/6![Frontier logo]()
$140
This Kiwi.com deal was found by Cheapflights users on 4/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/3011:21 am
STL
- DTW
1 stop6h 34m
Frontier
Sun 5/311:51 am
DTW
- STL
1 stop19h 59m
Frontier
Deal found 4/8![Frontier logo]()
$144
This Kiwi.com deal was found by Cheapflights users on 4/6. Clicking the “Pick Dates” 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
- DTW
1 stop18h 37m
Frontier
Sat 5/97:55 am
DTW
- STL
1 stop12h 28m
Frontier
Deal found 4/6![Frontier logo]()
$146
This Kiwi.com deal was found by Cheapflights users on 4/8. Clicking the “Pick Dates” 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 6/65:27 pm
STL
- DTW
1 stop6h 12m
Frontier
Tue 6/96:54 pm
DTW
- STL
1 stop14h 53m
Frontier
Deal found 4/8![Frontier logo]()
$152
This Kiwi.com deal was found by Cheapflights users on 4/9. Clicking the “Pick Dates” 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 5/165:27 pm
STL
- DTW
1 stop13h 25m
Multiple Airlines
Tue 5/196:50 am
DTW
- STL
1 stop27h 05m
Multiple Airlines
Deal found 4/9![Multiple Airlines logo]()
$158
This Kiwi.com deal was found by Cheapflights users on 4/9. Clicking the “Pick Dates” 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 5/238:16 pm
STL
- ORD
1 stop19h 50m
Frontier
Tue 5/266:55 am
ORD
- STL
1 stop26h 00m
Frontier
Deal found 4/9![Frontier logo]()
$172
This Southwest deal was found by Cheapflights users on 4/6. Clicking the “Pick Dates” 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 5/114:00 pm
STL
- MDW
1 stop6h 20m
Southwest
Wed 5/208:15 am
MDW
- STL
1 stop5h 10m
Southwest
Deal found 4/6![Southwest logo]()
$174
This Southwest deal was found by Cheapflights users on 4/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/138:35 am
STL
- ORD
1 stop6h 25m
Southwest
Mon 5/182:40 pm
ORD
- STL
1 stop6h 15m
Southwest
Deal found 4/8![Southwest logo]()
$174
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 10, 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 10, 2026.
This Delta deal was found by Cheapflights users on 4/7. Clicking the “Pick Dates” 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 5/2010:19 am
STL
- ORD
1 stop6h 10m
Delta
Wed 5/272:59 pm
ORD
- STL
1 stop6h 39m
Delta
Deal found 4/7![Delta logo]()
$177
This Southwest deal was found by Cheapflights users on 4/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/274:35 pm
STL
- MDW
1 stop5h 10m
Southwest
Sat 5/3010:30 am
MDW
- STL
2 stops7h 40m
Southwest
Deal found 4/6![Southwest logo]()
$179
This Expedia deal was found by Cheapflights users on 4/5. Clicking the “Pick Dates” 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.
Sun 5/311:28 am
STL
- MDW
1 stop10h 51m
Frontier
Sun 5/106:00 am
MDW
- STL
1 stop10h 54m
Frontier
Deal found 4/5![Frontier logo]()
$180
This United Airlines deal was found by Cheapflights users on 4/5. Clicking the “Pick Dates” 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 5/57:09 pm
STL
- ORD
Nonstop1h 31m
United Airlines
Wed 5/65:20 pm
ORD
- STL
Nonstop1h 33m
United Airlines
Deal found 4/5![United Airlines logo]()
$187
This American Airlines deal was found by Cheapflights users on 4/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/99:09 pm
ORD
- FNT
Nonstop1h 17m
American Airlines
Sun 5/107:33 pm
FNT
- ORD
Nonstop1h 42m
American Airlines
Deal found 4/6![American Airlines logo]()
$239
This Kiwi.com deal was found by Cheapflights users on 4/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/292:06 pm
MLI
- ORD
1 stop18h 59m
Multiple Airlines
Fri 5/85:30 pm
ORD
- MLI
1 stop23h 27m
Multiple Airlines
Deal found 4/9![Multiple Airlines logo]()
$301
This Southwest deal was found by Cheapflights users on 4/6. Clicking the “Pick Dates” 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 5/217:20 am
STL
- MDW
Nonstop1h 10m
Southwest
Thu 5/287:50 am
MDW
- STL
Nonstop1h 15m
Southwest
Deal found 4/6![Southwest logo]()
$191
This United Airlines deal was found by Cheapflights users on 4/9. Clicking the “Pick Dates” 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 5/116:30 am
STL
- ORD
Nonstop1h 24m
United Airlines
Thu 5/149:20 pm
ORD
- STL
Nonstop1h 25m
United Airlines
Deal found 4/9![United Airlines logo]()
$191
This Delta deal was found by Cheapflights users on 4/9. Clicking the “Pick Dates” 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 8/121:00 pm
MDW
- DTW
Nonstop1h 12m
Delta
Mon 8/176:15 pm
DTW
- MDW
Nonstop1h 16m
Delta
Deal found 4/9![Delta logo]()
$206
This Frontier deal was found by Cheapflights users on 4/5. Clicking the “Pick Dates” 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.
Wed 8/126:00 am
MDW
- DTW
1 stop9h 40m
Frontier
Fri 8/145:40 pm
DTW
- MDW
1 stop5h 31m
Frontier
Deal found 4/5![Frontier logo]()
$210
This Southwest deal was found by Cheapflights users on 4/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/66:45 pm
STL
- DTW
Nonstop1h 30m
Southwest
Sat 5/93:40 pm
DTW
- STL
Nonstop1h 40m
Southwest
Deal found 4/8![Southwest logo]()
$195
This Delta deal was found by Cheapflights users on 4/6. Clicking the “Pick Dates” 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 5/239:25 am
ORD
- DTW
Nonstop1h 20m
Delta
Mon 5/254:00 pm
DTW
- ORD
Nonstop1h 29m
Delta
Deal found 4/6![Delta logo]()
$211
This American Airlines deal was found by Cheapflights users on 4/8. Clicking the “Pick Dates” 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 4/305:15 am
MLI
- ORD
Nonstop1h 18m
American Airlines
Sat 5/911:08 am
ORD
- MLI
Nonstop1h 11m
American Airlines
Deal found 4/8![American Airlines logo]()
$239
This Southwest deal was found by Cheapflights users on 4/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/29:10 am
MDW
- DTW
1 stop4h 50m
Southwest
Mon 5/41:00 pm
DTW
- MDW
Nonstop1h 10m
Southwest
Deal found 4/10![Southwest logo]()
$201
This United Airlines deal was found by Cheapflights users on 4/9. Clicking the “Pick Dates” 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 9/26:00 am
STL
- ORD
Nonstop1h 29m
United Airlines
Wed 10/1412:55 pm
ORD
- STL
Nonstop1h 23m
United Airlines
Deal found 4/9![United Airlines logo]()
$227
This Delta deal was found by Cheapflights users on 4/7. Clicking the “Pick Dates” 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 4/301:24 pm
MDW
- DTW
Nonstop1h 15m
Delta
Mon 5/45:40 pm
DTW
- MDW
Nonstop1h 18m
Delta
Deal found 4/7![Delta logo]()
$211
This Southwest deal was found by Cheapflights users on 4/8. Clicking the “Pick Dates” 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 5/2312:25 pm
STL
- MDW
1 stop4h 30m
Southwest
Sat 5/3012:45 pm
MDW
- STL
Nonstop1h 15m
Southwest
Deal found 4/8![Southwest logo]()
$201
This Delta deal was found by Cheapflights users on 4/7. Clicking the “Pick Dates” 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 4/309:27 am
MDW
- DTW
Nonstop1h 12m
Delta
Sat 5/28:25 am
DTW
- MDW
Nonstop1h 22m
Delta
Deal found 4/7![Delta logo]()
$211
This American Airlines deal was found by Cheapflights users on 4/5. Clicking the “Pick Dates” 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 7/109:15 pm
ORD
- FNT
Nonstop1h 17m
American Airlines
Sun 7/125:30 am
FNT
- ORD
Nonstop1h 19m
American Airlines
Deal found 4/5![American Airlines logo]()
$259
This United Airlines deal was found by Cheapflights users on 4/9. Clicking the “Pick Dates” 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 7/164:38 pm
ORD
- FNT
Nonstop1h 28m
United Airlines
Sun 7/193:36 pm
FNT
- ORD
Nonstop1h 30m
United Airlines
Deal found 4/9![United Airlines logo]()
$239
This Southwest deal was found by Cheapflights users on 4/9. Clicking the “Pick Dates” 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 5/96:20 am
STL
- MDW
1 stop6h 50m
Southwest
Sat 5/1612:45 pm
MDW
- STL
Nonstop1h 15m
Southwest
Deal found 4/9![Southwest logo]()
$201
This Delta deal was found by Cheapflights users on 4/6. Clicking the “Pick Dates” 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 5/216:45 am
STL
- ORD
1 stop6h 16m
Delta
Thu 5/285:30 am
ORD
- STL
1 stop6h 50m
Delta
Deal found 4/6![Delta logo]()
$211
This United Airlines deal was found by Cheapflights users on 4/9. Clicking the “Pick Dates” 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 6/48:35 pm
ORD
- FNT
Nonstop1h 28m
United Airlines
Mon 6/83:36 pm
FNT
- ORD
Nonstop1h 30m
United Airlines
Deal found 4/9![United Airlines logo]()
$239
This Southwest deal was found by Cheapflights users on 4/9. Clicking the “Pick Dates” 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 5/113:50 pm
STL
- MDW
1 stop4h 40m
Southwest
Thu 5/1411:40 am
MDW
- STL
Nonstop1h 15m
Southwest
Deal found 4/9![Southwest logo]()
$201
This Kiwi.com deal was found by Cheapflights users on 4/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/204:59 pm
STL
- DTW
2 stops17h 39m
Frontier
Fri 4/248:49 pm
DTW
- STL
1 stop11h 01m
Frontier
Deal found 4/5![Frontier logo]()
$295
This American Airlines deal was found by Cheapflights users on 4/7. Clicking the “Pick Dates” 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 4/244:40 pm
ORD
- FNT
Nonstop1h 23m
American Airlines
Sun 4/2612:59 pm
FNT
- ORD
Nonstop1h 34m
American Airlines
Deal found 4/7![American Airlines logo]()
$269
This United Airlines deal was found by Cheapflights users on 4/5. Clicking the “Pick Dates” 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 6/62:31 pm
MLI
- ORD
Nonstop1h 13m
United Airlines
Sun 6/712:45 pm
ORD
- MLI
Nonstop1h 11m
United Airlines
Deal found 4/5![United Airlines logo]()
$239
This American Airlines deal was found by Cheapflights users on 4/8. Clicking the “Pick Dates” 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 4/2310:10 am
ORD
- FNT
Nonstop1h 19m
American Airlines
Mon 4/2712:59 pm
FNT
- ORD
Nonstop1h 34m
American Airlines
Deal found 4/8![American Airlines logo]()
$269
This KAYAK deal was found by Cheapflights users on 4/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/44:41 pm
STL
- MDW
1 stop5h 47m
Delta
Wed 5/66:00 am
MDW
- STL
1 stop5h 56m
Delta
Deal found 4/6![Delta logo]()
$230
This Southwest deal was found by Cheapflights users on 4/5. Clicking the “Pick Dates” 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 5/217:50 am
MDW
- DTW
1 stop5h 30m
Southwest
Thu 5/288:15 pm
DTW
- MDW
1 stop3h 30m
Southwest
Deal found 4/5![Southwest logo]()
$211
Last-minute flights from Illinois to MichiganDiscover last-minute flight deals from Illinois to Michigan. Data last updated April 10, 2026 and is based on user searches.
Discover last-minute flight deals from Illinois to Michigan. Data last updated April 10, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 4/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/3011:21 am
STL
- DTW
1 stop6h 34m
Frontier
Sun 5/311:51 am
DTW
- STL
1 stop19h 59m
Frontier
Deal found 4/8![Frontier logo]()
$144
This Kiwi.com deal was found by Cheapflights users on 4/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/18:23 pm
STL
- DTW
1 stop14h 16m
Frontier
Mon 5/46:15 pm
DTW
- STL
1 stop24h 21m
Frontier
Deal found 4/9![Frontier logo]()
$162
This Kiwi.com deal was found by Cheapflights users on 4/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/48:23 pm
STL
- DTW
1 stop15h 13m
Frontier
Mon 5/116:05 pm
DTW
- STL
1 stop24h 28m
Frontier
Deal found 4/6![Frontier logo]()
$129
This Frontier deal was found by Cheapflights users on 4/9. Clicking the “Pick Dates” 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 5/97:55 am
DTW
- STL
1 stop12h 28m
Frontier
Deal found 4/9![Frontier logo]()
$160
This Kiwi.com deal was found by Cheapflights users on 4/9. Clicking the “Pick Dates” 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
- DTW
1 stop6h 12m
Frontier
Tue 5/126:50 am
DTW
- STL
1 stop11h 43m
Frontier
Deal found 4/9![Frontier logo]()
$128
This Kiwi.com deal was found by Cheapflights users on 4/6. Clicking the “Pick Dates” 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
- DTW
1 stop6h 12m
Frontier
Wed 5/136:05 pm
DTW
- STL
1 stop23h 49m
Frontier
Deal found 4/6![Frontier logo]()
$138
This Kiwi.com deal was found by Cheapflights users on 4/6. Clicking the “Pick Dates” 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
- DTW
1 stop18h 37m
Frontier
Sat 5/97:55 am
DTW
- STL
1 stop12h 28m
Frontier
Deal found 4/6![Frontier logo]()
$146
This Travelocity deal was found by Cheapflights users on 4/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/85:27 pm
STL
- DTW
1 stop6h 12m
Frontier
Mon 5/117:55 am
DTW
- STL
1 stop12h 28m
Frontier
Deal found 4/6![Frontier logo]()
$140
This Southwest deal was found by Cheapflights users on 4/6. Clicking the “Pick Dates” 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 5/114:00 pm
STL
- MDW
1 stop6h 20m
Southwest
Wed 5/208:15 am
MDW
- STL
1 stop5h 10m
Southwest
Deal found 4/6![Southwest logo]()
$174
This Southwest deal was found by Cheapflights users on 4/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/138:35 am
STL
- ORD
1 stop6h 25m
Southwest
Mon 5/182:40 pm
ORD
- STL
1 stop6h 15m
Southwest
Deal found 4/8![Southwest logo]()
$174
This Kiwi.com deal was found by Cheapflights users on 4/9. Clicking the “Pick Dates” 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 5/165:27 pm
STL
- DTW
1 stop13h 25m
Multiple Airlines
Tue 5/196:50 am
DTW
- STL
1 stop27h 05m
Multiple Airlines
Deal found 4/9![Multiple Airlines logo]()
$158
This Kiwi.com deal was found by Cheapflights users on 4/9. Clicking the “Pick Dates” 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 5/238:16 pm
STL
- ORD
1 stop19h 50m
Frontier
Tue 5/266:55 am
ORD
- STL
1 stop26h 00m
Frontier
Deal found 4/9![Frontier logo]()
$172
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 10, 2026.
Search for one-way flight options from Illinois to Michigan. Find affordable one-way fares based on user searches. Data last updated April 10, 2026.
This Delta deal was found by Cheapflights users on 4/8. Clicking the “Pick Dates” 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 5/1211:09 am
ORD
- DTW
Nonstop1h 21m
Delta
Deal found 4/8![Delta logo]()
$59
This Delta deal was found by Cheapflights users on 4/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/296:38 pm
MDW
- DTW
Nonstop1h 15m
Delta
Deal found 4/8![Delta logo]()
$59
This Southwest deal was found by Cheapflights users on 4/6. Clicking the “Pick Dates” 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 5/53:55 pm
STL
- MDW
Nonstop1h 10m
Southwest
Deal found 4/6![Southwest logo]()
$59
This American Airlines deal was found by Cheapflights users on 4/6. Clicking the “Pick Dates” 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 5/197:05 am
STL
- ORD
Nonstop1h 31m
American Airlines
Deal found 4/6![American Airlines logo]()
$59
This Kiwi.com deal was found by Cheapflights users on 4/7. Clicking the “Pick Dates” 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
- DTW
1 stop6h 12m
Frontier
Deal found 4/7![Frontier logo]()
$63
This Kiwi.com deal was found by Cheapflights users on 4/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/126:33 pm
STL
- DTW
1 stop5h 06m
Frontier
Deal found 4/10![Frontier logo]()
$65
This Southwest deal was found by Cheapflights users on 4/9. Clicking the “Pick Dates” 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 6/32:40 pm
ORD
- DTW
1 stop5h 55m
Southwest
Deal found 4/9![Southwest logo]()
$69
This Southwest deal was found by Cheapflights users on 4/8. Clicking the “Pick Dates” 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 5/121:55 pm
MDW
- DTW
1 stop6h 20m
Southwest
Deal found 4/8![Southwest logo]()
$69
This Southwest deal was found by Cheapflights users on 4/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/285:45 am
STL
- ORD
1 stop5h 25m
Southwest
Deal found 4/7![Southwest logo]()
$69
This Frontier deal was found by Cheapflights users on 4/9. Clicking the “Pick Dates” 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.
Wed 5/69:00 am
ORD
- DTW
1 stop7h 20m
Frontier
Deal found 4/9![Frontier logo]()
$70
This Frontier deal was found by Cheapflights users on 4/9. Clicking the “Pick Dates” 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 5/56:00 am
MDW
- DTW
1 stop5h 36m
Frontier
Deal found 4/9![Frontier logo]()
$70
This Frontier deal was found by Cheapflights users on 4/8. Clicking the “Pick Dates” 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 5/94:19 pm
STL
- ORD
1 stop6h 54m
Frontier
Deal found 4/8![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 10, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $128 (Kiwi.com) |
One-way from | $59 (Delta) |
Popular in | March |
Cheapest in | May |
Average price | $340 |
Good round-trip deal | $85 or less |
Good one-way deal | $49 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from 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 10, 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
St. LouisChicago
STL - ORD
STLORD
Lambert-St Louis
Wed 5/20
10:19 am-4:29 pm
1 stop6h 10m
Chicago O'Hare Intl
Wed 5/27
2:59 pm-9:38 pm
1 stop6h 39m
$177
St. LouisChicago
STL - MDW
STLMDW
Lambert-St Louis
Wed 5/27
4:35 pm-9:45 pm
1 stop5h 10m
Chicago Midway
Sat 5/30
10:30 am-6:10 pm
2 stops7h 40m
$179
St. LouisChicago
STL - MDW
STLMDW
Lambert-St Louis
Sun 5/3
11:28 am-10:19 pm
1 stop10h 51m
Chicago Midway
Sun 5/10
6:00 am-4:54 pm
1 stop10h 54m
$180
St. LouisChicago
STL - ORD
STLORD
Lambert-St Louis
Tue 5/5
7:09 pm-8:40 pm
Nonstop1h 31m
Chicago O'Hare Intl
Wed 5/6
5:20 pm-6:53 pm
Nonstop1h 33m
$187
St. LouisChicago
STL - MDW
STLMDW
Lambert-St Louis
Thu 5/21
7:20 am-8:30 am
Nonstop1h 10m
Chicago Midway
Thu 5/28
7:50 am-9:05 am
Nonstop1h 15m
$191
St. LouisChicago
STL - ORD
STLORD
Lambert-St Louis
Mon 5/11
6:30 am-7:54 am
Nonstop1h 24m
Chicago O'Hare Intl
Thu 5/14
9:20 pm-10:45 pm
Nonstop1h 25m
$191
St. LouisDetroit
STL - DTW
STLDTW
Lambert-St Louis
Wed 5/6
6:45 pm-9:15 pm
Nonstop1h 30m
Detroit Metropolitan Wayne County
Sat 5/9
3:40 pm-4:20 pm
Nonstop1h 40m
$195
ChicagoDetroit
MDW - DTW
MDWDTW
Chicago Midway
Sat 5/2
9:10 am-3:00 pm
1 stop4h 50m
Detroit Metropolitan Wayne County
Mon 5/4
1:00 pm-1:10 pm
Nonstop1h 10m
$201
St. LouisChicago
STL - MDW
STLMDW
Lambert-St Louis
Sat 5/23
12:25 pm-4:55 pm
1 stop4h 30m
Chicago Midway
Sat 5/30
12:45 pm-2:00 pm
Nonstop1h 15m
$201
St. LouisChicago
STL - MDW
STLMDW
Lambert-St Louis
Sat 5/9
6:20 am-1:10 pm
1 stop6h 50m
Chicago Midway
Sat 5/16
12:45 pm-2:00 pm
Nonstop1h 15m
$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-DTW
STL-ORD
STL-MDW
ORD-DTW
MDW-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-DTW
STL-ORD
STL-MDW
ORD-DTW
What is the cheapest month to book a flight from Illinois to Michigan?
Currently, October is the cheapest month in which you can book a flight from Illinois to Michigan (average of $75). Flying from Illinois to Michigan in March is currently the most expensive (average of $168). 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 10, 2026.
One of the essential ways to save on airfare from Illinois to Michigan is to remain as flexible as possible. Flights that are in the afternoon tend to be the most expensive. A flight in the morning could potentially save you up to 22% 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 4, 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 10, 2026.
The most flights from USIL to USMI are scheduled on a Friday (93 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (49 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 10, 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.
Entertainment
7.5
Boarding
8.1
Food
7.0
Crew
8.6
Overall
8.0
Comfort
8.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Entertainment
7.5
Boarding
8.1
Food
7.0
Crew
8.6
Overall
8.0
Comfort
8.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Entertainment
7.5
Boarding
8.1
Food
7.0
Crew
8.6
Overall
8.0
Comfort
8.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Entertainment
7.5
Boarding
8.1
Food
7.0
Crew
8.6
Overall
8.0
Comfort
8.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Entertainment
7.5
Boarding
8.1
Food
7.0
Crew
8.6
Overall
8.0
Comfort
8.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Entertainment
7.5
Boarding
8.1
Food
7.0
Crew
8.6
Overall
8.0
Comfort
8.0
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 10, 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 10, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$91 | Average$329 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$91 | Average$297 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$97 | Average$277 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$133 | Average$331 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$144 | Average$178 | FlexibilityNo cancel fee | On-time62% |