$64+ Cheap flights from Michigan to Illinois
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/2. Fares are subject to change and may not be available on all flights or dates of travel.
DTW — ORD
Jun 5 — Jun 121
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 6, 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 6, 2026.
This Kiwi.com deal was found by Cheapflights users on 5/5. 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.
Thu 6/46:50 am
DTW
- STL
1 stop11h 43m
Frontier
Tue 6/96:31 pm
STL
- DTW
1 stop21h 22m
Frontier
Deal found 5/5![Frontier logo]()
$124
This Kiwi.com deal was found by Cheapflights users on 5/5. 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.
Thu 6/41:59 pm
DTW
- STL
1 stop19h 56m
Frontier
Mon 6/85:27 pm
STL
- DTW
1 stop23h 32m
Frontier
Deal found 5/5![Frontier logo]()
$125
This Kiwi.com deal was found by Cheapflights users on 5/1. Clicking the “Pick Dates” 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 5/296:05 pm
DTW
- STL
1 stop15h 50m
Frontier
Fri 6/55:27 pm
STL
- DTW
1 stop6h 12m
Frontier
Deal found 5/1![Frontier logo]()
$132
This Kiwi.com deal was found by Cheapflights users on 5/4. Clicking the “Pick Dates” 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 5/286:50 am
DTW
- STL
1 stop11h 43m
Frontier
Mon 6/15:27 pm
STL
- DTW
1 stop6h 12m
Frontier
Deal found 5/4![Frontier logo]()
$134
This Kiwi.com deal was found by Cheapflights users on 5/1. Clicking the “Pick Dates” 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 6/46:30 am
DTW
- STL
1 stop12h 03m
Multiple Airlines
Fri 6/55:27 pm
STL
- DTW
1 stop6h 12m
Multiple Airlines
Deal found 5/1![Multiple Airlines logo]()
$137
This Kiwi.com deal was found by Cheapflights users on 5/5. 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 8/105:38 pm
DTW
- STL
1 stop24h 59m
Frontier
Fri 8/144:52 pm
STL
- DTW
1 stop19h 52m
Frontier
Deal found 5/5![Frontier logo]()
$152
This Kiwi.com deal was found by Cheapflights users on 5/3. Clicking the “Pick Dates” 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 5/296:05 pm
DTW
- STL
1 stop15h 50m
Frontier
Mon 6/15:27 pm
STL
- DTW
1 stop6h 12m
Frontier
Deal found 5/3![Frontier logo]()
$155
This Kiwi.com deal was found by Cheapflights users on 5/3. Clicking the “Pick Dates” 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 5/255:43 pm
DTW
- MDW
1 stop18h 29m
Frontier
Mon 6/16:00 am
MDW
- DTW
1 stop17h 39m
Frontier
Deal found 5/3![Frontier logo]()
$155
This Kiwi.com deal was found by Cheapflights users on 5/3. Clicking the “Pick Dates” 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 stop27h 07m
Frontier
Tue 9/16:33 pm
STL
- DTW
1 stop5h 09m
Frontier
Deal found 5/3![Frontier logo]()
$156
This Kiwi.com deal was found by Cheapflights users on 5/4. Clicking the “Pick Dates” 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 5/261:59 pm
DTW
- ORD
1 stop18h 56m
Frontier
Thu 5/286:55 am
ORD
- DTW
1 stop16h 43m
Frontier
Deal found 5/4![Frontier logo]()
$156
This American Airlines deal was found by Cheapflights users on 5/4. Clicking the “Pick Dates” 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 6/210:01 am
GRR
- ORD
Nonstop1h 29m
American Airlines
Tue 6/25:11 pm
ORD
- GRR
Nonstop1h 15m
American Airlines
Deal found 5/4![American Airlines logo]()
$157
This Southwest deal was found by Cheapflights users on 5/4. Clicking the “Pick Dates” 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 6/178:10 pm
DTW
- MDW
1 stop4h 00m
Southwest
Wed 6/245:20 pm
MDW
- DTW
1 stop4h 05m
Southwest
Deal found 5/4![Southwest logo]()
$157
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 6, 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 6, 2026.
This Southwest deal was found by Cheapflights users on 5/2. Clicking the “Pick Dates” 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 6/163:50 pm
DTW
- MDW
1 stop4h 45m
Southwest
Tue 6/2311:50 am
MDW
- DTW
1 stop6h 40m
Southwest
Deal found 5/2![Southwest logo]()
$157
This Delta deal was found by Cheapflights users on 5/2. Clicking the “Pick Dates” 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 5/236:19 pm
DTW
- MDW
Nonstop1h 14m
Delta
Mon 5/251:22 pm
MDW
- DTW
Nonstop1h 13m
Delta
Deal found 5/2![Delta logo]()
$191
This United Airlines deal was found by Cheapflights users on 5/5. 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 6/26:00 am
DTW
- ORD
Nonstop1h 26m
United Airlines
Wed 6/39:29 pm
ORD
- DTW
Nonstop1h 28m
United Airlines
Deal found 5/5![United Airlines logo]()
$207
This American Airlines deal was found by Cheapflights users on 5/5. 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.
Sat 7/45:36 pm
FNT
- ORD
Nonstop1h 38m
American Airlines
Wed 7/89:17 pm
ORD
- FNT
Nonstop1h 17m
American Airlines
Deal found 5/5![American Airlines logo]()
$239
This Southwest deal was found by Cheapflights users on 5/3. Clicking the “Pick Dates” 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 6/28:15 am
DTW
- MDW
Nonstop1h 15m
Southwest
Tue 6/911:25 am
MDW
- DTW
1 stop5h 30m
Southwest
Deal found 5/3![Southwest logo]()
$174
This Delta deal was found by Cheapflights users on 5/3. Clicking the “Pick Dates” 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 6/212:31 pm
DTW
- STL
Nonstop1h 39m
Delta
Tue 6/96:30 am
STL
- DTW
Nonstop1h 34m
Delta
Deal found 5/3![Delta logo]()
$197
This Southwest deal was found by Cheapflights users on 5/5. 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.
Mon 6/18:15 pm
DTW
- MDW
1 stop3h 30m
Southwest
Tue 6/210:10 am
MDW
- DTW
2 stops7h 10m
Southwest
Deal found 5/5![Southwest logo]()
$189
This United Airlines deal was found by Cheapflights users on 5/1. Clicking the “Pick Dates” 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 5/236:00 am
DTW
- ORD
Nonstop1h 26m
United Airlines
Sun 5/249:29 pm
ORD
- DTW
Nonstop1h 28m
United Airlines
Deal found 5/1![United Airlines logo]()
$223
This Delta deal was found by Cheapflights users on 5/5. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/285:30 am
GRR
- ORD
1 stop4h 15m
Delta
Mon 6/17:00 pm
ORD
- GRR
1 stop3h 44m
Delta
Deal found 5/5![Delta logo]()
$211
This Southwest deal was found by Cheapflights users on 5/2. Clicking the “Pick Dates” 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 5/237:20 am
DTW
- MDW
1 stop8h 55m
Southwest
Mon 5/257:05 pm
MDW
- DTW
Nonstop1h 05m
Southwest
Deal found 5/2![Southwest logo]()
$207
This United Airlines deal was found by Cheapflights users on 5/5. 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 9/199:00 am
MBS
- ORD
Nonstop1h 36m
United Airlines
Mon 9/212:30 pm
ORD
- MBS
Nonstop1h 29m
United Airlines
Deal found 5/5![United Airlines logo]()
$235
This Delta deal was found by Cheapflights users on 5/5. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/138:00 pm
DTW
- ORD
Nonstop1h 31m
Delta
Tue 6/167:17 pm
ORD
- DTW
Nonstop1h 33m
Delta
Deal found 5/5![Delta logo]()
$216
This KAYAK deal was found by Cheapflights users on 5/4. Clicking the “Pick Dates” 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.
Wed 5/2711:47 am
ORD
- STL
Nonstop1h 28m
American Airlines
Wed 5/276:12 pm
STL
- ORD
1 stop5h 47m
American Airlines
Deal found 5/4![American Airlines logo]()
$279
This Southwest deal was found by Cheapflights users on 5/5. 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 6/48:15 pm
DTW
- STL
Nonstop1h 35m
Southwest
Tue 6/97:40 pm
STL
- DTW
Nonstop1h 30m
Southwest
Deal found 5/5![Southwest logo]()
$211
This Delta deal was found by Cheapflights users on 5/5. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/35:40 pm
DTW
- ORD
Nonstop1h 25m
Delta
Fri 6/125:22 pm
ORD
- DTW
Nonstop1h 29m
Delta
Deal found 5/5![Delta logo]()
$216
This United Airlines deal was found by Cheapflights users on 5/3. Clicking the “Pick Dates” 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 10/97:41 pm
FNT
- ORD
Nonstop1h 32m
United Airlines
Sun 10/118:35 pm
ORD
- FNT
Nonstop1h 28m
United Airlines
Deal found 5/3![United Airlines logo]()
$239
This Delta deal was found by Cheapflights users on 5/1. Clicking the “Pick Dates” 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 6/306:07 pm
DTW
- MDW
Nonstop1h 24m
Delta
Mon 7/69:17 am
MDW
- DTW
Nonstop1h 18m
Delta
Deal found 5/1![Delta logo]()
$216
This United Airlines deal was found by Cheapflights users on 5/5. 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 10/247:41 pm
FNT
- ORD
Nonstop1h 32m
United Airlines
Wed 10/2812:40 pm
ORD
- FNT
Nonstop1h 21m
United Airlines
Deal found 5/5![United Airlines logo]()
$239
This Southwest deal was found by Cheapflights users on 5/5. 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.
Wed 6/38:15 am
DTW
- MDW
Nonstop1h 15m
Southwest
Fri 6/127:15 am
MDW
- DTW
1 stop4h 30m
Southwest
Deal found 5/5![Southwest logo]()
$226
This United Airlines deal was found by Cheapflights users on 5/2. Clicking the “Pick Dates” 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 9/177:41 pm
FNT
- ORD
Nonstop1h 32m
United Airlines
Sun 9/209:30 pm
ORD
- FNT
Nonstop1h 28m
United Airlines
Deal found 5/2![United Airlines logo]()
$239
This Southwest deal was found by Cheapflights users on 5/1. Clicking the “Pick Dates” 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 5/2712:40 pm
DTW
- STL
2 stops8h 20m
Southwest
Tue 6/22:30 pm
STL
- DTW
2 stops7h 00m
Southwest
Deal found 5/1![Southwest logo]()
$235
This Delta deal was found by Cheapflights users on 5/3. Clicking the “Pick Dates” 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 6/55:45 pm
GRR
- ORD
1 stop3h 29m
Delta
Tue 6/168:52 am
ORD
- GRR
1 stop4h 16m
Delta
Deal found 5/3![Delta logo]()
$238
This United Airlines deal was found by Cheapflights users on 5/5. 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.
Thu 8/207:15 am
TVC
- ORD
Nonstop1h 27m
United Airlines
Sun 8/2312:41 pm
ORD
- TVC
Nonstop1h 18m
United Airlines
Deal found 5/5![United Airlines logo]()
$239
This Southwest deal was found by Cheapflights users on 5/5. 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.
Mon 6/18:30 pm
DTW
- STL
1 stop3h 15m
Southwest
Tue 6/211:35 am
STL
- DTW
2 stops9h 55m
Southwest
Deal found 5/5![Southwest logo]()
$236
This United Airlines deal was found by Cheapflights users on 5/2. Clicking the “Pick Dates” 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 6/46:32 pm
TVC
- ORD
Nonstop1h 28m
United Airlines
Sun 6/79:29 pm
ORD
- TVC
Nonstop1h 27m
United Airlines
Deal found 5/2![United Airlines logo]()
$239
This Delta deal was found by Cheapflights users on 5/4. Clicking the “Pick Dates” 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 6/203:49 pm
MBS
- ORD
1 stop5h 42m
Delta
Tue 6/2311:30 am
ORD
- MBS
1 stop5h 10m
Delta
Deal found 5/4![Delta logo]()
$254
This United Airlines deal was found by Cheapflights users on 5/3. Clicking the “Pick Dates” 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 5/306:25 pm
GRR
- ORD
Nonstop1h 15m
United Airlines
Wed 6/310:37 am
ORD
- GRR
Nonstop1h 11m
United Airlines
Deal found 5/3![United Airlines logo]()
$244
This Delta deal was found by Cheapflights users on 5/4. Clicking the “Pick Dates” 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 10/293:30 pm
MBS
- ORD
1 stop5h 54m
Delta
Sun 11/18:55 am
ORD
- MBS
1 stop4h 58m
Delta
Deal found 5/4![Delta logo]()
$254
This Southwest deal was found by Cheapflights users on 5/5. 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.
Fri 5/291:00 pm
DTW
- MDW
Nonstop1h 10m
Southwest
Fri 5/295:40 pm
MDW
- DTW
1 stop3h 30m
Southwest
Deal found 5/5![Southwest logo]()
$265
This United Airlines deal was found by Cheapflights users on 5/1. Clicking the “Pick Dates” 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 6/46:00 am
MBS
- ORD
Nonstop1h 31m
United Airlines
Sun 6/710:45 am
ORD
- MBS
Nonstop1h 27m
United Airlines
Deal found 5/1![United Airlines logo]()
$252
Last-minute flights from Michigan to IllinoisDiscover last-minute flight deals from Michigan to Illinois. Data last updated May 6, 2026 and is based on user searches.
Discover last-minute flight deals from Michigan to Illinois. Data last updated May 6, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 5/3. Clicking the “Pick Dates” 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 5/255:43 pm
DTW
- MDW
1 stop18h 29m
Frontier
Mon 6/16:00 am
MDW
- DTW
1 stop17h 39m
Frontier
Deal found 5/3![Frontier logo]()
$155
This Kiwi.com deal was found by Cheapflights users on 5/4. Clicking the “Pick Dates” 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 5/261:59 pm
DTW
- ORD
1 stop18h 56m
Frontier
Thu 5/286:55 am
ORD
- DTW
1 stop16h 43m
Frontier
Deal found 5/4![Frontier logo]()
$156
This Frontier deal was found by Cheapflights users on 5/2. Clicking the “Pick Dates” 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 5/2612:44 pm
DTW
- STL
1 stop12h 13m
Frontier
Wed 5/275:27 pm
STL
- DTW
1 stop6h 12m
Frontier
Deal found 5/2![Frontier logo]()
$160
This Kiwi.com deal was found by Cheapflights users on 5/4. Clicking the “Pick Dates” 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 5/286:50 am
DTW
- STL
1 stop11h 43m
Frontier
Mon 6/15:27 pm
STL
- DTW
1 stop6h 12m
Frontier
Deal found 5/4![Frontier logo]()
$134
This Kiwi.com deal was found by Cheapflights users on 5/1. Clicking the “Pick Dates” 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 5/296:05 pm
DTW
- STL
1 stop15h 50m
Frontier
Fri 6/55:27 pm
STL
- DTW
1 stop6h 12m
Frontier
Deal found 5/1![Frontier logo]()
$132
This Kiwi.com deal was found by Cheapflights users on 5/3. Clicking the “Pick Dates” 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 5/296:05 pm
DTW
- STL
1 stop15h 50m
Frontier
Mon 6/15:27 pm
STL
- DTW
1 stop6h 12m
Frontier
Deal found 5/3![Frontier logo]()
$155
This Kiwi.com deal was found by Cheapflights users on 5/2. Clicking the “Pick Dates” 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 6/16:05 pm
DTW
- STL
1 stop24h 28m
Frontier
Thu 6/46:33 pm
STL
- DTW
1 stop5h 05m
Frontier
Deal found 5/2![Frontier logo]()
$158
This American Airlines deal was found by Cheapflights users on 5/4. Clicking the “Pick Dates” 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 6/210:01 am
GRR
- ORD
Nonstop1h 29m
American Airlines
Tue 6/25:11 pm
ORD
- GRR
Nonstop1h 15m
American Airlines
Deal found 5/4![American Airlines logo]()
$157
This Kiwi.com deal was found by Cheapflights users on 5/5. 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.
Thu 6/46:50 am
DTW
- STL
1 stop11h 43m
Frontier
Tue 6/96:31 pm
STL
- DTW
1 stop21h 22m
Frontier
Deal found 5/5![Frontier logo]()
$124
This Kiwi.com deal was found by Cheapflights users on 5/5. 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.
Thu 6/41:59 pm
DTW
- STL
1 stop19h 56m
Frontier
Mon 6/85:27 pm
STL
- DTW
1 stop23h 32m
Frontier
Deal found 5/5![Frontier logo]()
$125
This Kiwi.com deal was found by Cheapflights users on 5/1. Clicking the “Pick Dates” 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 6/46:30 am
DTW
- STL
1 stop12h 03m
Multiple Airlines
Fri 6/55:27 pm
STL
- DTW
1 stop6h 12m
Multiple Airlines
Deal found 5/1![Multiple Airlines logo]()
$137
This Southwest deal was found by Cheapflights users on 5/4. Clicking the “Pick Dates” 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 6/178:10 pm
DTW
- MDW
1 stop4h 00m
Southwest
Wed 6/245:20 pm
MDW
- DTW
1 stop4h 05m
Southwest
Deal found 5/4![Southwest logo]()
$157
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 6, 2026.
Search for one-way flight options from Michigan to Illinois. Find affordable one-way fares based on user searches. Data last updated May 6, 2026.
This Kiwi.com deal was found by Cheapflights users on 5/5. 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.
Thu 7/26:30 am
DTW
- STL
1 stop12h 00m
Frontier
Deal found 5/5![Frontier logo]()
$64
This Kiwi.com deal was found by Cheapflights users on 5/6. 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.
Tue 7/282:02 pm
DTW
- STL
1 stop19h 55m
Frontier
Deal found 5/6![Frontier logo]()
$65
This American Airlines deal was found by Cheapflights users on 5/5. 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.
Tue 6/27:52 am
DTW
- ORD
Nonstop1h 43m
American Airlines
Deal found 5/5![American Airlines logo]()
$68
This Southwest deal was found by Cheapflights users on 5/5. 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.
Wed 6/34:40 pm
MDW
- STL
Nonstop1h 15m
Southwest
Deal found 5/5![Southwest logo]()
$69
This Delta deal was found by Cheapflights users on 5/1. Clicking the “Pick Dates” 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 5/265:40 pm
DTW
- ORD
Nonstop1h 25m
Delta
Deal found 5/1![Delta logo]()
$69
This Delta deal was found by Cheapflights users on 5/1. Clicking the “Pick Dates” 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 5/268:25 am
DTW
- MDW
Nonstop1h 18m
Delta
Deal found 5/1![Delta logo]()
$69
This United Airlines deal was found by Cheapflights users on 5/4. Clicking the “Pick Dates” 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 6/1710:40 am
ORD
- STL
Nonstop1h 31m
United Airlines
Deal found 5/4![United Airlines logo]()
$69
This Kiwi.com deal was found by Cheapflights users on 5/5. 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.
Wed 6/312:04 pm
MDW
- STL
1 stop29h 29m
Frontier
Deal found 5/5![Frontier logo]()
$70
This Frontier deal was found by Cheapflights users on 5/3. Clicking the “Pick Dates” 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.
Sun 5/241:59 pm
DTW
- ORD
1 stop6h 42m
Frontier
Deal found 5/3![Frontier logo]()
$70
This Kiwi.com deal was found by Cheapflights users on 5/5. 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.
Tue 6/21:59 pm
DTW
- MDW
1 stop9h 03m
Frontier
Deal found 5/5![Frontier logo]()
$70
This Kiwi.com deal was found by Cheapflights users on 5/5. 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.
Tue 6/26:55 am
ORD
- STL
1 stop10h 38m
Frontier
Deal found 5/5![Frontier logo]()
$70
This Kiwi.com deal was found by Cheapflights users on 5/1. Clicking the “Pick Dates” 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 6/166:00 am
MDW
- STL
1 stop26h 52m
Frontier
Deal found 5/1![Frontier logo]()
$71
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 6, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $124 (Kiwi.com) |
One-way from | $64 (Kiwi.com) |
Popular in | June |
Cheapest in | September |
Average price | $294 |
Good round-trip deal | $98 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 6, 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 - MDW
DTWMDW
Detroit Metropolitan Wayne County
Tue 6/16
3:50 pm-7:35 pm
1 stop4h 45m
Chicago Midway
Tue 6/23
11:50 am-7:30 pm
1 stop6h 40m
$157
DetroitChicago
DTW - MDW
DTWMDW
Detroit Metropolitan Wayne County
Tue 6/2
8:15 am-8:30 am
Nonstop1h 15m
Chicago Midway
Tue 6/9
11:25 am-5:55 pm
1 stop5h 30m
$174
DetroitChicago
DTW - MDW
DTWMDW
Detroit Metropolitan Wayne County
Mon 6/1
8:15 pm-10:45 pm
1 stop3h 30m
Chicago Midway
Tue 6/2
10:10 am-6:20 pm
2 stops7h 10m
$189
DetroitChicago
DTW - MDW
DTWMDW
Detroit Metropolitan Wayne County
Sat 5/23
6:19 pm-6:33 pm
Nonstop1h 14m
Chicago Midway
Mon 5/25
1:22 pm-3:35 pm
Nonstop1h 13m
$191
DetroitSt. Louis
DTW - STL
DTWSTL
Detroit Metropolitan Wayne County
Tue 6/2
12:31 pm-1:10 pm
Nonstop1h 39m
Lambert-St Louis
Tue 6/9
6:30 am-9:04 am
Nonstop1h 34m
$197
DetroitChicago
DTW - ORD
DTWORD
Detroit Metropolitan Wayne County
Tue 6/2
6:00 am-6:26 am
Nonstop1h 26m
Chicago O'Hare Intl
Wed 6/3
9:29 pm-11:57 pm
Nonstop1h 28m
$207
DetroitChicago
DTW - MDW
DTWMDW
Detroit Metropolitan Wayne County
Sat 5/23
7:20 am-3:15 pm
1 stop8h 55m
Chicago Midway
Mon 5/25
7:05 pm-9:10 pm
Nonstop1h 05m
$207
Grand RapidsChicago
GRR - ORD
GRRORD
Grand Rapids Gerald R. Ford Intl
Thu 5/28
5:30 am-8:45 am
1 stop4h 15m
Chicago O'Hare Intl
Mon 6/1
7:00 pm-11:44 pm
1 stop3h 44m
$211
DetroitSt. Louis
DTW - STL
DTWSTL
Detroit Metropolitan Wayne County
Thu 6/4
8:15 pm-8:50 pm
Nonstop1h 35m
Lambert-St Louis
Tue 6/9
7:40 pm-10:10 pm
Nonstop1h 30m
$211
DetroitChicago
DTW - ORD
DTWORD
Detroit Metropolitan Wayne County
Sat 6/13
8:00 pm-8:31 pm
Nonstop1h 31m
Chicago O'Hare Intl
Tue 6/16
7:17 pm-9:50 pm
Nonstop1h 33m
$216
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
DTW-MDW
DTW-ORD
GRR-ORD
MDW-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
DTW-MDW
DTW-ORD
GRR-ORD
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 month to book a flight from Michigan to Illinois?
Currently, May is the cheapest month in which you can book a flight from Michigan to Illinois (average of $38). 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 6, 2026.
Unlike in the evening, when flights are generally more expensive, you can save up to 16% on flights from Michigan to Illinois by exploring options for tickets in the morning.
What is the cheapest day to fly from Michigan to Illinois?
Use this chart to determine the cheapest time to fly round-trip from Michigan to Illinois. Price data was last updated on May 2, 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.
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 6, 2026.
The most flights from USMI to USIL are scheduled on a Wednesday (91 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (39 on average).
How much does it cost to fly round-trip from Michigan to Illinois?
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 6, 2026.
See what other customers who have flown with Denver Air Connection,Southwest, andDelta from Michigan to Illinois have to say. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Denver Air Connection
Overall
8.1
Entertainment
7.6
Food
8.2
Boarding
8.2
Crew
9.1
Comfort
8.6
Denver Air Connection
Denver Air Connection
Overall
8.1
Entertainment
7.6
Food
8.2
Boarding
8.2
Crew
9.1
Comfort
8.6
Denver Air Connection
Overall
8.1
Entertainment
7.6
Food
8.2
Boarding
8.2
Crew
9.1
Comfort
8.6
Denver Air Connection
Overall
8.1
Entertainment
7.6
Food
8.2
Boarding
8.2
Crew
9.1
Comfort
8.6
Denver Air Connection
Overall
8.1
Entertainment
7.6
Food
8.2
Boarding
8.2
Crew
9.1
Comfort
8.6
Denver Air Connection
Overall
8.1
Entertainment
7.6
Food
8.2
Boarding
8.2
Crew
9.1
Comfort
8.6
Related info for your journey
Find useful and relevant information for your journey from Michigan to Illinois. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Browse thousands of different options on Cheapflights for your next trip
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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Popular flights
Return Flight Options
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 6, 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 6, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$91 | Average$300 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$94 | Average$294 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$97 | Average$309 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$97 | Average$317 | FlexibilityNo cancel fee | On-time63% |