$78+ Cheap flights from Detroit (DTT) to Illinois
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/11. Fares are subject to change and may not be available on all flights or dates of travel.
DTT — ORD
Oct 21 — Oct 281
Round-trip
1 adult, Economy
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Find cheap flights from Detroit to Illinois with Cheapflights
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Cheapest flights from Detroit to IllinoisExplore the most affordable flight options available from Detroit to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 21, 2026.
Explore the most affordable flight options available from Detroit to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 21, 2026.
This Kiwi.com deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/216:30 am -
1 stop12h 10m
Mon 10/266:35 pm -
1 stop15h 37m
Deal found 9/16![Frontier logo]()
$145
This Trip.com deal was found by Cheapflights users on 9/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/46:25 am -
1 stop12h 15m
Wed 11/116:44 pm -
1 stop5h 00m
Deal found 9/20![Frontier logo]()
$153
This Kiwi.com deal was found by Cheapflights users on 9/18. 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 10/146:30 am -
1 stop12h 10m
Wed 10/216:35 pm -
1 stop16h 21m
Deal found 9/18![Frontier logo]()
$167
This Mytrip deal was found by Cheapflights users on 9/17. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/2012:51 pm -
2 stops29h 49m
Fri 10/236:35 pm -
1 stop5h 04m
Deal found 9/17![Frontier logo]()
$179
This Kiwi.com deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/223:03 pm -
1 stop27h 37m
Mon 10/266:35 pm -
1 stop15h 37m
Deal found 9/16![Frontier logo]()
$194
This Priceline deal was found by Cheapflights users on 9/17. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/1912:57 pm -
1 stop11h 16m
Wed 10/216:35 pm -
1 stop5h 04m
Deal found 9/17![Frontier logo]()
$199
This Trip.com deal was found by Cheapflights users on 9/19. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/174:35 pm -
1 stop7h 38m
Mon 10/196:35 pm -
1 stop5h 04m
Deal found 9/19![Frontier logo]()
$202
This Southwest deal was found by Cheapflights users on 9/16. 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.
Sat 10/3112:45 pm -
1 stop5h 00m
Sat 11/74:20 pm -
Nonstop1h 15m
Deal found 9/16![Southwest logo]()
$217
This Kissandfly.com deal was found by Cheapflights users on 9/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/155:30 am -
Nonstop1h 29m
Mon 10/196:00 am -
1 stop13h 04m
Deal found 9/20![Frontier logo]()
$218
This Southwest deal was found by Cheapflights users on 9/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/176:20 am -
2 stops9h 30m
Sat 10/244:10 pm -
Nonstop1h 10m
Deal found 9/19![Southwest logo]()
$218
This Mytrip deal was found by Cheapflights users on 9/16. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/264:29 pm -
2 stops21h 22m
Tue 11/106:30 am -
1 stop16h 21m
Deal found 9/16![Frontier logo]()
$220
This Delta deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/165:59 pm -
Nonstop1h 30m
Tue 10/201:55 pm -
Nonstop1h 29m
Deal found 9/18![Delta logo]()
$221
Best flights from Detroit to IllinoisDiscover carefully curated flight deals from Detroit to Illinois that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 21, 2026.
Discover carefully curated flight deals from Detroit to Illinois that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 21, 2026.
This United Airlines deal was found by Cheapflights users on 9/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/272:09 pm -
Nonstop1h 39m
Tue 12/19:20 pm -
Nonstop1h 24m
Deal found 9/19![United Airlines logo]()
$221
This Delta deal was found by Cheapflights users on 9/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/37:56 pm -
Nonstop1h 34m
Fri 11/65:29 pm -
Nonstop1h 31m
Deal found 9/20![Delta logo]()
$221
This Southwest deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/228:25 pm -
1 stop3h 45m
Sat 10/242:40 pm -
1 stop6h 20m
Deal found 9/17![Southwest logo]()
$230
This American Airlines deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/139:10 pm -
1 stop3h 53m
Sun 11/156:02 am -
1 stop5h 57m
Deal found 9/16![American Airlines logo]()
$319
This Kiwi.com deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/27:39 pm -
2 stops17h 18m
Sun 12/612:47 pm -
1 stop16h 33m
Deal found 9/16![Multiple Airlines logo]()
$387
This United Airlines deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/57:26 am -
Nonstop1h 34m
Fri 11/1312:47 pm -
Nonstop1h 40m
Deal found 9/17![United Airlines logo]()
$221
This Delta deal was found by Cheapflights users on 9/16. 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 10/207:56 pm -
Nonstop1h 34m
Thu 10/227:00 am -
Nonstop1h 30m
Deal found 9/16![Delta logo]()
$221
This Southwest deal was found by Cheapflights users on 9/16. 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.
Mon 10/265:35 pm -
1 stop5h 25m
Wed 10/281:05 pm -
Nonstop1h 05m
Deal found 9/16![Southwest logo]()
$231
This Delta deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/165:40 pm -
Nonstop1h 20m
Wed 10/211:27 pm -
Nonstop1h 15m
Deal found 9/18![Delta logo]()
$221
This Southwest deal was found by Cheapflights users on 9/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/33:55 pm -
1 stop6h 30m
Fri 11/66:50 pm -
Nonstop1h 15m
Deal found 9/20![Southwest logo]()
$231
This Delta deal was found by Cheapflights users on 9/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/235:40 pm -
Nonstop1h 20m
Mon 10/269:29 am -
Nonstop1h 14m
Deal found 9/20![Delta logo]()
$221
This Southwest deal was found by Cheapflights users on 9/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/175:55 pm -
Nonstop1h 10m
Mon 10/198:35 am -
1 stop6h 45m
Deal found 9/20![Southwest logo]()
$231
This Delta deal was found by Cheapflights users on 9/17. 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.
Thu 10/229:10 am -
Nonstop1h 22m
Fri 10/236:44 pm -
Nonstop1h 14m
Deal found 9/17![Delta logo]()
$221
This United Airlines deal was found by Cheapflights users on 9/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/2212:30 pm -
Nonstop1h 33m
Sun 10/2512:47 pm -
Nonstop1h 40m
Deal found 9/20![United Airlines logo]()
$281
This Southwest deal was found by Cheapflights users on 9/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/295:25 am -
1 stop5h 35m
Sat 10/318:20 am -
2 stops8h 10m
Deal found 9/20![Southwest logo]()
$246
This United Airlines deal was found by Cheapflights users on 9/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/2912:35 pm -
Nonstop1h 33m
Sun 11/12:30 pm -
Nonstop1h 30m
Deal found 9/20![United Airlines logo]()
$281
This Southwest deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/209:00 am -
Nonstop1h 10m
Fri 10/307:05 am -
1 stop5h 10m
Deal found 9/16![Southwest logo]()
$246
This American Airlines deal was found by Cheapflights users on 9/16. 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 10/228:54 pm -
1 stop4h 05m
Mon 10/262:30 pm -
1 stop6h 04m
Deal found 9/16![American Airlines logo]()
$384
This Kiwi.com deal was found by Cheapflights users on 9/17. 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.
Thu 12/37:33 pm -
1 stop15h 54m
Sun 12/612:47 pm -
1 stop16h 33m
Deal found 9/17![Multiple Airlines logo]()
$387
This Delta deal was found by Cheapflights users on 9/16. 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 12/107:45 pm -
Nonstop1h 47m
Tue 12/156:32 am -
Nonstop1h 38m
Deal found 9/16![Delta logo]()
$271
This Southwest deal was found by Cheapflights users on 9/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/107:10 am -
1 stop7h 50m
Mon 10/127:55 am -
Nonstop1h 10m
Deal found 9/19![Southwest logo]()
$248
This United Airlines deal was found by Cheapflights users on 9/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/3012:35 pm -
Nonstop1h 33m
Sun 11/12:30 pm -
Nonstop1h 30m
Deal found 9/20![United Airlines logo]()
$305
This American Airlines deal was found by Cheapflights users on 9/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/238:54 pm -
1 stop4h 05m
Mon 10/265:00 am -
1 stop3h 30m
Deal found 9/19![American Airlines logo]()
$384
This United Airlines deal was found by Cheapflights users on 9/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/2012:35 pm -
Nonstop1h 33m
Fri 11/279:30 pm -
Nonstop1h 27m
Deal found 9/20![United Airlines logo]()
$305
This Kiwi.com deal was found by Cheapflights users on 9/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/158:59 pm -
1 stop12h 00m
Mon 10/196:13 pm -
1 stop15h 39m
Deal found 9/20![Multiple Airlines logo]()
$412
This Delta deal was found by Cheapflights users on 9/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/127:25 am -
1 stop6h 58m
Tue 11/176:40 am -
Nonstop1h 33m
Deal found 9/20![Delta logo]()
$287
This Southwest deal was found by Cheapflights users on 9/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/46:20 pm -
Nonstop1h 50m
Wed 11/116:25 pm -
Nonstop1h 35m
Deal found 9/20![Southwest logo]()
$277
This United Airlines deal was found by Cheapflights users on 9/18. 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 10/167:30 am -
Nonstop1h 28m
Sun 10/188:50 am -
Nonstop1h 34m
Deal found 9/18![United Airlines logo]()
$305
This Delta deal was found by Cheapflights users on 9/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/1010:00 am -
Nonstop1h 24m
Sun 10/115:29 pm -
Nonstop1h 31m
Deal found 9/19![Delta logo]()
$294
This Kiwi.com deal was found by Cheapflights users on 9/18. 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.
Sat 10/312:34 pm -
1 stop8h 19m
Wed 10/77:36 pm -
1 stop15h 03m
Deal found 9/18![Multiple Airlines logo]()
$432
Last-minute flights from Detroit to IllinoisDiscover last-minute flight deals from Detroit to Illinois. Data last updated September 21, 2026 and is based on user searches.
Discover last-minute flight deals from Detroit to Illinois. Data last updated September 21, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 9/18. 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 10/146:30 am -
1 stop12h 10m
Wed 10/216:35 pm -
1 stop16h 21m
Deal found 9/18![Frontier logo]()
$167
This Southwest deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/142:25 pm -
Nonstop1h 10m
Wed 10/214:45 pm -
1 stop4h 50m
Deal found 9/16![Southwest logo]()
$217
This Kissandfly.com deal was found by Cheapflights users on 9/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/155:30 am -
Nonstop1h 29m
Mon 10/196:00 am -
1 stop13h 04m
Deal found 9/20![Frontier logo]()
$218
This Trip.com deal was found by Cheapflights users on 9/19. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/168:59 pm -
1 stop27h 14m
Mon 10/196:35 pm -
1 stop5h 04m
Deal found 9/19![Frontier logo]()
$208
This Delta deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/165:59 pm -
Nonstop1h 30m
Mon 10/198:29 am -
Nonstop1h 23m
Deal found 9/18![Delta logo]()
$221
This Trip.com deal was found by Cheapflights users on 9/19. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/174:35 pm -
1 stop7h 38m
Mon 10/196:35 pm -
1 stop5h 04m
Deal found 9/19![Frontier logo]()
$202
This Southwest deal was found by Cheapflights users on 9/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/176:20 am -
2 stops9h 30m
Sat 10/244:10 pm -
Nonstop1h 10m
Deal found 9/19![Southwest logo]()
$218
This Priceline deal was found by Cheapflights users on 9/17. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/1912:57 pm -
1 stop11h 16m
Wed 10/216:35 pm -
1 stop5h 04m
Deal found 9/17![Frontier logo]()
$199
This Mytrip deal was found by Cheapflights users on 9/17. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/2012:51 pm -
2 stops29h 49m
Fri 10/236:35 pm -
1 stop5h 04m
Deal found 9/17![Frontier logo]()
$179
This Kiwi.com deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/216:30 am -
1 stop12h 10m
Mon 10/266:35 pm -
1 stop15h 37m
Deal found 9/16![Frontier logo]()
$145
This Kiwi.com deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/223:03 pm -
1 stop27h 37m
Mon 10/266:35 pm -
1 stop15h 37m
Deal found 9/16![Frontier logo]()
$194
This Mytrip deal was found by Cheapflights users on 9/16. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/264:29 pm -
2 stops21h 22m
Tue 11/106:30 am -
1 stop16h 21m
Deal found 9/16![Frontier logo]()
$220
One-way flights from Detroit to IllinoisSearch for one-way flight options from Detroit to Illinois. Find affordable one-way fares based on user searches. Data last updated September 21, 2026.
Search for one-way flight options from Detroit to Illinois. Find affordable one-way fares based on user searches. Data last updated September 21, 2026.
This Expedia deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/116:25 am -
1 stop12h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/16![Frontier logo]()
$78
This Trip.com deal was found by Cheapflights users on 9/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/286:25 am -
1 stop12h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/20![Frontier logo]()
$80
This Mytrip deal was found by Cheapflights users on 9/16. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/216:30 am -
1 stop12h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/16![Frontier logo]()
$82
This Trip.com deal was found by Cheapflights users on 9/18. 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.
Tue 11/103:02 pm -
1 stop27h 38m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/18![Frontier logo]()
$83
This CheapOair deal was found by Cheapflights users on 9/18. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/26:25 am -
1 stop12h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/18![Frontier logo]()
$84
This Kiwi.com deal was found by Cheapflights users on 9/17. 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.
Tue 10/273:02 pm -
1 stop27h 38m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/17![Frontier logo]()
$85
This Mytrip deal was found by Cheapflights users on 9/16. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/207:37 pm -
2 stops23h 03m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/16![Frontier logo]()
$86
This Kiwi.com deal was found by Cheapflights users on 9/17. 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.
Tue 11/33:02 pm -
1 stop27h 38m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/17![Frontier logo]()
$87
This Expedia deal was found by Cheapflights users on 9/18. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/77:00 am -
1 stop13h 14m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/18![Frontier logo]()
$89
This Mytrip deal was found by Cheapflights users on 9/17. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/136:25 am -
1 stop12h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/17![Frontier logo]()
$91
This Trip.com deal was found by Cheapflights users on 9/18. 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.
Thu 10/293:02 pm -
1 stop27h 38m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/18![Frontier logo]()
$93
This Super.com deal was found by Cheapflights users on 9/17. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/67:00 am -
1 stop5h 51m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/17![Frontier logo]()
$93
Find flight deals from Detroit to Illinois
Keep the following information in mind while searching for Detroit to Illinois flight deals. Data was last updated September 21, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $145 (Kiwi.com) |
One-way from | $78 (Expedia) |
Popular in | June |
Cheapest in | January |
Average price | $257 |
Good round-trip deal | $368 or less |
Good one-way deal | $214 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Detroit 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 7,457,451 searches. Data last updated September 21, 2026.
Use the filters below to find and compare flights from Detroit to Illinois that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
DetroitChicago
DTW Detroit Metropolitan Wayne County - ORD Chicago O'Hare Intl
DTWORD
Detroit Metropolitan Wayne County
Mon 12/21
4:25 pm-4:53 pm
Nonstop1h 28m
Chicago O'Hare Intl
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$99
DetroitChicago
DTW Detroit Metropolitan Wayne County - ORD Chicago O'Hare Intl
DTWORD
Detroit Metropolitan Wayne County
Wed 11/4
6:15 am-6:57 am
Nonstop1h 42m
Chicago O'Hare Intl
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$99
Quickest round-trip
DetroitChicago
DTW Detroit Metropolitan Wayne County - MDW Chicago Midway
DTWMDW
Detroit Metropolitan Wayne County
Mon 10/26
8:05 pm-8:15 pm
Nonstop1h 10m
Chicago Midway
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$99
DetroitChicago
DTW Detroit Metropolitan Wayne County - ORD Chicago O'Hare Intl
DTWORD
Detroit Metropolitan Wayne County
Thu 10/15
12:30 pm-1:03 pm
Nonstop1h 33m
Chicago O'Hare Intl
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$99
DetroitChicago
DTW Detroit Metropolitan Wayne County - ORD Chicago O'Hare Intl
DTWORD
Detroit Metropolitan Wayne County
Mon 10/26
4:06 pm-4:32 pm
Nonstop1h 26m
Chicago O'Hare Intl
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$99
DetroitChicago
DTW Detroit Metropolitan Wayne County - MDW Chicago Midway
DTWMDW
Detroit Metropolitan Wayne County
Thu 10/22
2:45 pm-2:55 pm
Nonstop1h 10m
Chicago Midway
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$99
DetroitChicago
DTW Detroit Metropolitan Wayne County - ORD Chicago O'Hare Intl
DTWORD
Detroit Metropolitan Wayne County
Wed 12/16
1:32 pm-1:56 pm
Nonstop1h 24m
Chicago O'Hare Intl
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$99
DetroitChicago
DTW Detroit Metropolitan Wayne County - ORD Chicago O'Hare Intl
DTWORD
Detroit Metropolitan Wayne County
Wed 10/21
12:30 pm-1:03 pm
Nonstop1h 33m
Chicago O'Hare Intl
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$99
DetroitChicago
DTW Detroit Metropolitan Wayne County - MDW Chicago Midway
DTWMDW
Detroit Metropolitan Wayne County
Wed 10/21
2:25 pm-2:35 pm
Nonstop1h 10m
Chicago Midway
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$99
DetroitChicago
DTW Detroit Metropolitan Wayne County - ORD Chicago O'Hare Intl
DTWORD
Detroit Metropolitan Wayne County
Tue 10/20
4:06 pm-4:32 pm
Nonstop1h 26m
Chicago O'Hare Intl
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$99
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Detroit to Illinois
Have a flexible travel schedule? Discover the best time to fly to Illinois from Detroit with our price prediction graph.
DTW-STL
DTW-ORD
DTW-MDW
DTW-MLI
DTW-PIA
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 Detroit to Illinois
DTT-USIL
DTW-STL
DTW-ORD
DTW-MDW
DTW-MLI
What is the cheapest month to book a flight from Detroit to Illinois?
Currently, December is the cheapest month in which you can book a flight from Detroit to Illinois (average of $256). Flying from Detroit to Illinois in July is currently the most expensive (average of $404). 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 DTT to IL?
Find hourly flight availability from Detroit 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 September 21, 2026.
It’s typically best to fly out from Detroit to Illinois in the morning. Doing so could potentially save you 33% on the flight price compared to flying at noon, which is usually more expensive.
Weekly flight availability from Detroit to Illinois
Explore weekly flight availability from Detroit 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 September 21, 2026.
The most flights from DTT to USIL are scheduled on a Sunday (94 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (45 on average).
How much does it cost to fly round-trip from Detroit to Illinois?
Airfare is typical for this route at the moment.
Detroit to Illinois flights typically cost between $201 and $348 in October.The cheapest round-trip price found within the last 5 days was $218 on Frontier (Oct 15-Oct 19).
How far ahead should I book a flight from Detroit to Illinois?
The best time to book flights from Detroit to Illinois is 73 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
What is the cheapest day to fly from Detroit to Illinois?
Use this chart to determine the cheapest time to fly round-trip from Detroit to Illinois. Price data was last updated on September 19, 2026.
Travelers seeking maximum savings on their Detroit to Illinois flight should consider departing on Wednesday afternoons when fares are most often at their lowest. Saturday at noon 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 September 21, 2026.
Read through reviews of airlines operating flights from Detroit to Illinois, such as Southwest,Delta, andUnited Airlines. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Crew
8.6
Entertainment
7.5
Boarding
8.1
Food
7.0
Overall
8.0
Comfort
8.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Crew
8.6
Entertainment
7.5
Boarding
8.1
Food
7.0
Overall
8.0
Comfort
8.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Crew
8.6
Entertainment
7.5
Boarding
8.1
Food
7.0
Overall
8.0
Comfort
8.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Crew
8.6
Entertainment
7.5
Boarding
8.1
Food
7.0
Overall
8.0
Comfort
8.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Crew
8.6
Entertainment
7.5
Boarding
8.1
Food
7.0
Overall
8.0
Comfort
8.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Related info for your journey
Find useful and relevant information for your journey from Detroit to Illinois. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for Detroit 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 Detroit to Illinois by cabin class
Find flights from Detroit to Illinois, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Detroit and Illinois flights
Browse other Detroit and Illinois flight options. Last updated on September 21, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Detroit to Illinois flights
Consider these flights traveling from Detroit to Illinois.
Top 5 airlines flying from Detroit to Illinois
Discover the top 5 airlines that operate flights from Detroit 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 7,457,451 searches. Data last updated September 21, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$70 | Average$229 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$121 | Average$352 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$137 | Average$306 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$143 | Average$372 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$154 | Average$393 | FlexibilityNo cancel fee | On-time69% |