$65+ 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 10/21. Fares are subject to change and may not be available on all flights or dates of travel.
DTW — ORD
Sep 18 — Sep 251
Round-trip
1 adult, Economy
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Find cheap flights from Michigan to Illinois with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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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 August 19, 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 August 19, 2026.
This American Airlines deal was found by Cheapflights users on 8/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/299:16 pm -
Nonstop1h 29m
Mon 11/26:54 am -
Nonstop1h 16m
Deal found 8/16![American Airlines logo]()
$137
This Delta deal was found by Cheapflights users on 8/17. 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 9/295:30 am -
1 stop3h 26m
Sat 10/38:55 am -
1 stop4h 03m
Deal found 8/17![Delta logo]()
$157
This Kiwi.com deal was found by Cheapflights users on 8/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/3011:50 am -
1 stop7h 04m
Mon 11/28:10 pm -
1 stop27h 14m
Deal found 8/15![Frontier logo]()
$164
This Delta deal was found by Cheapflights users on 8/18. 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.
Wed 10/2811:19 am -
1 stop6h 00m
Fri 10/306:47 am -
1 stop6h 12m
Deal found 8/18![Delta logo]()
$164
This Kiwi.com deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/247:08 am -
1 stop12h 49m
Mon 10/266:35 pm -
1 stop19h 04m
Deal found 8/14![Frontier logo]()
$168
This United Airlines deal was found by Cheapflights users on 8/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/89:15 am -
Nonstop1h 19m
Thu 9/107:59 pm -
Nonstop1h 07m
Deal found 8/15![United Airlines logo]()
$168
This Kiwi.com deal was found by Cheapflights users on 8/18. 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 11/43:34 pm -
1 stop19h 06m
Mon 11/910:35 am -
1 stop13h 07m
Deal found 8/18![Frontier logo]()
$169
This CheapOair deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/108:57 pm -
1 stop20h 37m
Sat 9/128:10 pm -
1 stop26h 56m
Deal found 8/14![Frontier logo]()
$171
This American Airlines deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/125:32 am -
Nonstop1h 27m
Fri 9/189:00 pm -
Nonstop1h 06m
Deal found 8/13![American Airlines logo]()
$171
This Kiwi.com deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/307:55 pm -
1 stop14h 40m
Mon 10/52:29 pm -
1 stop20h 36m
Deal found 8/14![Frontier logo]()
$174
This Kiwi.com deal was found by Cheapflights users on 8/18. 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 11/43:34 pm -
1 stop19h 06m
Sun 11/810:35 am -
1 stop27h 04m
Deal found 8/18![Frontier logo]()
$175
This eDestinos deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/37:05 am -
1 stop10h 17m
Sun 9/66:17 pm -
1 stop13h 36m
Deal found 8/14![Frontier logo]()
$176
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 August 19, 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 August 19, 2026.
This United Airlines deal was found by Cheapflights users on 8/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/89:15 am -
Nonstop1h 19m
Thu 9/107:59 pm -
Nonstop1h 07m
Deal found 8/15![United Airlines logo]()
$168
This Delta deal was found by Cheapflights users on 8/18. 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 9/228:50 am -
Nonstop1h 39m
Sat 9/266:40 am -
Nonstop1h 33m
Deal found 8/18![Delta logo]()
$177
This Southwest deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/58:30 am -
Nonstop1h 15m
Tue 9/88:35 am -
Nonstop1h 20m
Deal found 8/13![Southwest logo]()
$182
This American Airlines deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/96:34 am -
Nonstop1h 47m
Wed 9/167:10 am -
Nonstop1h 37m
Deal found 8/13![American Airlines logo]()
$183
This Frontier deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/2712:33 pm -
1 stop10h 06m
Sun 10/41:01 pm -
1 stop7h 31m
Deal found 8/13![Frontier logo]()
$226
This Kiwi.com deal was found by Cheapflights users on 8/18. 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.
Fri 9/118:00 am -
1 stop6h 30m
Mon 9/1412:26 pm -
1 stop26h 00m
Deal found 8/18![Multiple Airlines logo]()
$274
This United Airlines deal was found by Cheapflights users on 8/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/97:10 am -
Nonstop1h 19m
Sat 10/105:59 am -
Nonstop1h 12m
Deal found 8/15![United Airlines logo]()
$171
This Southwest deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/56:15 pm -
Nonstop1h 20m
Mon 9/78:50 pm -
Nonstop1h 10m
Deal found 8/14![Southwest logo]()
$183
This Delta deal was found by Cheapflights users on 8/17. 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.
Fri 12/45:29 am -
1 stop3h 17m
Sat 1/97:00 am -
1 stop5h 37m
Deal found 8/17![Delta logo]()
$191
This United Airlines deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/510:55 am -
Nonstop1h 29m
Sat 9/59:25 pm -
Nonstop1h 29m
Deal found 8/13![United Airlines logo]()
$183
This Southwest deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/18:45 am -
Nonstop1h 15m
Tue 9/88:35 am -
Nonstop1h 20m
Deal found 8/13![Southwest logo]()
$183
This Southwest deal was found by Cheapflights users on 8/18. 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.
Tue 9/227:00 am -
1 stop7h 15m
Sat 9/264:25 pm -
Nonstop1h 35m
Deal found 8/18![Southwest logo]()
$187
This United Airlines deal was found by Cheapflights users on 8/18. 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.
Wed 9/96:29 pm -
Nonstop1h 31m
Thu 9/108:00 am -
Nonstop1h 34m
Deal found 8/18![United Airlines logo]()
$187
This United Airlines deal was found by Cheapflights users on 8/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/297:50 pm -
Nonstop1h 31m
Wed 9/308:00 am -
Nonstop1h 31m
Deal found 8/15![United Airlines logo]()
$187
This American Airlines deal was found by Cheapflights users on 8/19. 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.
Sun 9/135:59 pm -
Nonstop1h 44m
Sun 9/2010:05 pm -
Nonstop1h 20m
Deal found 8/19![American Airlines logo]()
$249
This Delta deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/54:52 pm -
1 stop5h 11m
Mon 9/76:30 am -
1 stop6h 09m
Deal found 8/14![Delta logo]()
$227
This American Airlines deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/115:32 am -
Nonstop1h 27m
Mon 9/149:50 pm -
Nonstop1h 22m
Deal found 8/14![American Airlines logo]()
$249
This Delta deal was found by Cheapflights users on 8/17. 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.
Fri 9/187:05 am -
1 stop6h 01m
Sat 9/194:10 pm -
1 stop4h 20m
Deal found 8/17![Delta logo]()
$228
This Southwest deal was found by Cheapflights users on 8/18. 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.
Tue 9/293:50 pm -
1 stop4h 10m
Fri 10/26:10 pm -
Nonstop1h 05m
Deal found 8/18![Southwest logo]()
$214
This American Airlines deal was found by Cheapflights users on 8/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/126:23 am -
Nonstop1h 37m
Sun 11/229:15 pm -
Nonstop1h 22m
Deal found 8/16![American Airlines logo]()
$250
This Frontier deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/278:55 pm -
1 stop14h 22m
Sun 10/410:20 am -
1 stop9h 15m
Deal found 8/13![Frontier logo]()
$304
This Delta deal was found by Cheapflights users on 8/16. 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.
Thu 2/46:10 pm -
Nonstop1h 30m
Mon 2/87:35 pm -
Nonstop1h 30m
Deal found 8/16![Delta logo]()
$237
This Southwest deal was found by Cheapflights users on 8/16. 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.
Fri 9/111:40 pm -
1 stop5h 15m
Sat 9/127:50 am -
2 stops5h 30m
Deal found 8/16![Southwest logo]()
$225
This United Airlines deal was found by Cheapflights users on 8/15. 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.
Wed 11/115:32 am -
Nonstop1h 27m
Sun 11/155:57 pm -
Nonstop1h 14m
Deal found 8/15![United Airlines logo]()
$231
This Delta deal was found by Cheapflights users on 8/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/158:05 pm -
Nonstop1h 25m
Wed 9/1611:17 am -
Nonstop1h 32m
Deal found 8/15![Delta logo]()
$237
This Kiwi.com deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/279:20 am -
1 stop7h 11m
Sat 8/295:02 pm -
2 stops38h 51m
Deal found 8/13![Frontier logo]()
$338
This United Airlines deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/139:59 am -
Nonstop1h 19m
Thu 9/179:52 pm -
Nonstop1h 07m
Deal found 8/14![United Airlines logo]()
$231
This Southwest deal was found by Cheapflights users on 8/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/266:15 pm -
Nonstop1h 20m
Sun 9/2712:55 pm -
Nonstop1h 10m
Deal found 8/15![Southwest logo]()
$232
This Delta deal was found by Cheapflights users on 8/16. 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.
Tue 10/1312:33 pm -
Nonstop1h 26m
Tue 10/271:55 pm -
Nonstop1h 29m
Deal found 8/16![Delta logo]()
$237
This United Airlines deal was found by Cheapflights users on 8/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/267:50 pm -
Nonstop1h 31m
Sun 9/276:00 am -
Nonstop1h 36m
Deal found 8/15![United Airlines logo]()
$232
Last-minute flights from Michigan to IllinoisDiscover last-minute flight deals from Michigan to Illinois. Data last updated August 19, 2026 and is based on user searches.
Discover last-minute flight deals from Michigan to Illinois. Data last updated August 19, 2026 and is based on user searches.
This eDestinos deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/37:05 am -
1 stop10h 17m
Sun 9/66:17 pm -
1 stop13h 36m
Deal found 8/14![Frontier logo]()
$176
This Southwest deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/58:30 am -
Nonstop1h 15m
Sat 9/53:35 pm -
Nonstop1h 10m
Deal found 8/13![Southwest logo]()
$180
This United Airlines deal was found by Cheapflights users on 8/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/89:15 am -
Nonstop1h 19m
Thu 9/107:59 pm -
Nonstop1h 07m
Deal found 8/15![United Airlines logo]()
$168
This Frontier deal was found by Cheapflights users on 8/17. 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 9/88:30 am -
1 stop10h 20m
Wed 9/162:29 pm -
1 stop9h 13m
Deal found 8/17![Frontier logo]()
$178
This United Airlines deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/105:00 am -
Nonstop1h 19m
Thu 9/1010:49 am -
Nonstop1h 09m
Deal found 8/14![United Airlines logo]()
$137
This CheapOair deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/108:57 pm -
1 stop20h 37m
Sat 9/128:10 pm -
1 stop26h 56m
Deal found 8/14![Frontier logo]()
$171
This Frontier deal was found by Cheapflights users on 8/18. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/108:35 pm -
1 stop23h 42m
Mon 9/142:29 pm -
1 stop9h 13m
Deal found 8/18![Frontier logo]()
$179
This American Airlines deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/125:32 am -
Nonstop1h 27m
Fri 9/189:00 pm -
Nonstop1h 06m
Deal found 8/13![American Airlines logo]()
$171
This Southwest deal was found by Cheapflights users on 8/18. 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.
Tue 9/156:25 am -
Nonstop1h 35m
Wed 9/1611:10 am -
Nonstop1h 30m
Deal found 8/18![Southwest logo]()
$177
This Kiwi.com deal was found by Cheapflights users on 8/16. 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 9/1510:37 am -
2 stops14h 46m
Thu 9/246:20 am -
1 stop12h 42m
Deal found 8/16![Frontier logo]()
$181
This Delta deal was found by Cheapflights users on 8/17. 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 9/295:30 am -
1 stop3h 26m
Sat 10/38:55 am -
1 stop4h 03m
Deal found 8/17![Delta logo]()
$157
This Kiwi.com deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/307:55 pm -
1 stop14h 40m
Mon 10/52:29 pm -
1 stop20h 36m
Deal found 8/14![Frontier logo]()
$174
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 August 19, 2026.
Search for one-way flight options from Michigan to Illinois. Find affordable one-way fares based on user searches. Data last updated August 19, 2026.
This Frontier deal was found by Cheapflights users on 8/19. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/216:15 am -
1 stop11h 25m
Deal found 8/19![Frontier logo]()
$65
This Frontier deal was found by Cheapflights users on 8/18. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/148:55 pm -
1 stop14h 37m
Deal found 8/18![Frontier logo]()
$65
This Kiwi.com deal was found by Cheapflights users on 8/17. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/182:03 pm -
1 stop19h 37m
Deal found 8/17![Frontier logo]()
$66
This American Airlines deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/49:38 am -
Nonstop1h 30m
Deal found 8/14![American Airlines logo]()
$69
This Southwest deal was found by Cheapflights users on 8/18. 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.
Thu 9/175:55 am -
1 stop4h 15m
Deal found 8/18![Southwest logo]()
$69
This American Airlines deal was found by Cheapflights users on 8/17. 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 12/212:41 pm -
Nonstop1h 38m
Deal found 8/17![American Airlines logo]()
$70
This CheapOair deal was found by Cheapflights users on 8/17. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/151:21 pm -
1 stop22h 11m
Deal found 8/17![Frontier logo]()
$70
This Priceline deal was found by Cheapflights users on 8/18. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/116:25 am -
1 stop6h 45m
Deal found 8/18![Frontier logo]()
$71
This Trip.com deal was found by Cheapflights users on 8/18. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/256:25 am -
1 stop6h 45m
Deal found 8/18![Frontier logo]()
$74
This Southwest deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/237:50 am -
Nonstop1h 10m
Deal found 8/14![Southwest logo]()
$76
This United Airlines deal was found by Cheapflights users on 8/18. 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 10/232:12 pm -
Nonstop1h 31m
Deal found 8/18![United Airlines logo]()
$76
This Frontier deal was found by Cheapflights users on 8/17. 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.
Fri 9/188:55 pm -
1 stop14h 37m
Deal found 8/17![Frontier logo]()
$77
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 August 19, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $137 (American Airlines) |
One-way from | $65 (Frontier) |
Popular in | June |
Cheapest in | January |
Average price | $295 |
Good round-trip deal | $184 or less |
Good one-way deal | $89 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 August 19, 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
Quickest round-trip
Grand RapidsChicago
GRR Grand Rapids Gerald R. Ford Intl - ORD Chicago O'Hare Intl
GRRORD
Grand Rapids Gerald R. Ford Intl
Tue 9/8
9:15 am-9:34 am
Nonstop1h 19m
Chicago O'Hare Intl
Thu 9/10
7:59 pm-10:06 pm
Nonstop1h 07m
$168
Grand RapidsChicago
GRR Grand Rapids Gerald R. Ford Intl - ORD Chicago O'Hare Intl
GRRORD
Grand Rapids Gerald R. Ford Intl
Fri 10/9
7:10 am-7:29 am
Nonstop1h 19m
Chicago O'Hare Intl
Sat 10/10
5:59 am-8:11 am
Nonstop1h 12m
$171
DetroitSt. Louis
DTW Detroit Metropolitan Wayne County - STL Lambert-St Louis
DTWSTL
Detroit Metropolitan Wayne County
Tue 9/22
8:50 am-9:29 am
Nonstop1h 39m
Lambert-St Louis
Sat 9/26
6:40 am-9:13 am
Nonstop1h 33m
$177
DetroitChicago
DTW Detroit Metropolitan Wayne County - MDW Chicago Midway
DTWMDW
Detroit Metropolitan Wayne County
Sat 9/5
8:30 am-8:45 am
Nonstop1h 15m
Chicago Midway
Tue 9/8
8:35 am-10:55 am
Nonstop1h 20m
$182
DetroitChicago
DTW Detroit Metropolitan Wayne County - ORD Chicago O'Hare Intl
DTWORD
Detroit Metropolitan Wayne County
Wed 9/9
6:34 am-7:21 am
Nonstop1h 47m
Chicago O'Hare Intl
Wed 9/16
7:10 am-9:47 am
Nonstop1h 37m
$183
ChicagoSt. Louis
MDW Chicago Midway - STL Lambert-St Louis
MDWSTL
Chicago Midway
Sat 9/5
6:15 pm-7:35 pm
Nonstop1h 20m
Lambert-St Louis
Mon 9/7
8:50 pm-10:00 pm
Nonstop1h 10m
$183
DetroitChicago
DTW Detroit Metropolitan Wayne County - ORD Chicago O'Hare Intl
DTWORD
Detroit Metropolitan Wayne County
Sat 9/5
10:55 am-11:24 am
Nonstop1h 29m
Chicago O'Hare Intl
Sat 9/5
9:25 pm-11:54 pm
Nonstop1h 29m
$183
DetroitChicago
DTW Detroit Metropolitan Wayne County - MDW Chicago Midway
DTWMDW
Detroit Metropolitan Wayne County
Tue 9/1
8:45 am-9:00 am
Nonstop1h 15m
Chicago Midway
Tue 9/8
8:35 am-10:55 am
Nonstop1h 20m
$183
DetroitSt. Louis
DTW Detroit Metropolitan Wayne County - STL Lambert-St Louis
DTWSTL
Detroit Metropolitan Wayne County
Tue 9/22
7:00 am-1:15 pm
1 stop7h 15m
Lambert-St Louis
Sat 9/26
4:25 pm-7:00 pm
Nonstop1h 35m
$187
ChicagoSt. Louis
ORD Chicago O'Hare Intl - STL Lambert-St Louis
ORDSTL
Chicago O'Hare Intl
Wed 9/9
6:29 pm-8:00 pm
Nonstop1h 31m
Lambert-St Louis
Thu 9/10
8:00 am-9:34 am
Nonstop1h 34m
$187
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Michigan to Illinois
Have a flexible travel schedule? Discover the best time to fly to Illinois from Michigan with our price prediction graph.
GRR-ORD
MDW-STL
ORD-STL
DTW-STL
FNT-STL
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Michigan to Illinois
USMI-USIL
GRR-ORD
MDW-STL
ORD-STL
DTW-STL
What is the cheapest month to book a flight from Michigan to Illinois?
Currently, October is the cheapest month in which you can book a flight from Michigan to Illinois (average of $226). Flying from Michigan to Illinois in July is currently the most expensive (average of $346). 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 August 19, 2026.
Unlike in the evening, when flights are generally more expensive, you can save up to 14% on flights from Michigan to Illinois by exploring options for tickets in the afternoon.
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 August 19, 2026.
The most flights from USMI to USIL are scheduled on a Monday (88 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (22 on average).
How much does it cost to fly round-trip from Michigan to Illinois?
Airfare is below average for this route at the moment.
Michigan to Illinois flights typically cost between $288 and $437 in September.The cheapest round-trip price found within the last 5 days was $181 on Frontier (Sep 15-Sep 24).
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 81 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 August 15, 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 August 19, 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
Comfort
8.7
Crew
9.2
Food
8.3
Boarding
8.3
Overall
8.2
Entertainment
7.6
Denver Air Connection
Denver Air Connection
Comfort
8.7
Crew
9.2
Food
8.3
Boarding
8.3
Overall
8.2
Entertainment
7.6
Denver Air Connection
Comfort
8.7
Crew
9.2
Food
8.3
Boarding
8.3
Overall
8.2
Entertainment
7.6
Denver Air Connection
Comfort
8.7
Crew
9.2
Food
8.3
Boarding
8.3
Overall
8.2
Entertainment
7.6
Denver Air Connection
Comfort
8.7
Crew
9.2
Food
8.3
Boarding
8.3
Overall
8.2
Entertainment
7.6
Denver Air Connection
Comfort
8.7
Crew
9.2
Food
8.3
Boarding
8.3
Overall
8.2
Entertainment
7.6
Related info for your journey
Find useful and relevant information for your journey from Michigan to Illinois. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Browse thousands of different options on Cheapflights for your next trip
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Alternative routes for Michigan to Illinois
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Illinois by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Michigan to Illinois by cabin class
Find flights from Michigan to Illinois, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Michigan and Illinois flights
Browse other Michigan and Illinois flight options. Last updated on August 19, 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 5 airlines flying from Michigan to Illinois
Discover the top 5 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 August 19, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$70 | Average$236 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$91 | Average$307 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$97 | Average$321 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$114 | Average$312 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$121 | Average$305 | FlexibilityNo cancel fee | On-timeN/A |