$62+ Cheap flights from Detroit (DTT) 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 8/31. Fares are subject to change and may not be available on all flights or dates of travel.
DTT — ORD
Sep 4 — Sep 111
Round-trip
1 adult, Economy
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Find cheap flights from Detroit to Illinois with Cheapflights
1. Tell us where you want to go
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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 August 5, 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 August 5, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/1. 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.
Mon 8/316:00 am -
1 stop12h 22m
Mon 9/76:17 pm -
1 stop14h 03m
Deal found 8/1![Frontier logo]()
$123
This Kiwi.com deal was found by Cheapflights users on 8/1. 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.
Mon 9/147:00 am -
1 stop7h 10m
Mon 9/212:29 pm -
1 stop9h 13m
Deal found 8/1![Frontier logo]()
$132
This Kiwi.com deal was found by Cheapflights users on 8/2. 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 10/57:00 am -
1 stop7h 10m
Fri 10/910:35 am -
1 stop27h 08m
Deal found 8/2![Frontier logo]()
$140
This Kiwi.com deal was found by Cheapflights users on 8/3. 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 9/117:00 am -
1 stop7h 10m
Mon 9/142:29 pm -
2 stops19h 14m
Deal found 8/3![Frontier logo]()
$145
This Kiwi.com deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” 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 9/36:00 am -
1 stop12h 22m
Mon 9/76:17 pm -
1 stop14h 03m
Deal found 7/31![Frontier logo]()
$148
This Kiwi.com deal was found by Cheapflights users on 8/3. 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.
Sun 9/203:25 pm -
1 stop22h 45m
Fri 9/252:29 pm -
1 stop9h 13m
Deal found 8/3![Frontier logo]()
$149
This Kiwi.com deal was found by Cheapflights users on 8/2. 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.
Fri 9/117:00 am -
1 stop7h 10m
Sun 9/1310:20 am -
1 stop10h 12m
Deal found 8/2![Frontier logo]()
$155
This Kiwi.com deal was found by Cheapflights users on 8/3. 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.
Wed 10/286:50 am -
1 stop27h 50m
Fri 10/3010:35 am -
1 stop13h 07m
Deal found 8/3![Frontier logo]()
$159
This Frontier deal was found by Cheapflights users on 8/3. 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.
Mon 11/22:00 pm -
1 stop8h 34m
Sat 11/76:30 am -
1 stop7h 09m
Deal found 8/3![Frontier logo]()
$189
This Frontier deal was found by Cheapflights users on 8/3. 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.
Thu 10/112:33 pm -
1 stop10h 06m
Mon 10/51:01 pm -
1 stop7h 31m
Deal found 8/3![Frontier logo]()
$190
This Frontier deal was found by Cheapflights users on 8/2. 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.
Fri 10/93:38 pm -
1 stop7h 20m
Wed 10/141:02 pm -
1 stop7h 32m
Deal found 8/2![Frontier logo]()
$190
This Kiwi.com deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” 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 9/144:23 pm -
2 stops20h 28m
Mon 9/217:11 am -
1 stop15h 16m
Deal found 7/31![Frontier logo]()
$195
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 August 5, 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 August 5, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/4. 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.
Wed 9/210:18 am -
2 stops32h 04m
Tue 9/85:27 pm -
1 stop15h 25m
Deal found 8/4![Frontier logo]()
$200
This Southwest deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” 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 9/51:20 pm -
Nonstop1h 30m
Sun 9/610:30 am -
2 stops9h 05m
Deal found 7/31![Southwest logo]()
$212
This Delta deal was found by Cheapflights users on 8/1. 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.
Sat 9/53:50 pm -
Nonstop1h 27m
Sun 9/66:59 am -
Nonstop1h 24m
Deal found 8/1![Delta logo]()
$217
This United Airlines deal was found by Cheapflights users on 8/4. 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.
Mon 9/212:07 pm -
Nonstop1h 40m
Wed 9/236:59 am -
Nonstop1h 33m
Deal found 8/4![United Airlines logo]()
$249
This American Airlines deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” 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 8/249:03 pm -
1 stop4h 05m
Sat 9/57:22 pm -
1 stop4h 45m
Deal found 7/31![American Airlines logo]()
$319
This Kiwi.com deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” 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.
Sun 8/308:30 am -
1 stop13h 15m
Sun 9/69:29 pm -
2 stops33h 01m
Deal found 7/31![Multiple Airlines logo]()
$452
This Southwest deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” 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 9/54:45 pm -
Nonstop1h 10m
Sun 9/62:45 pm -
1 stop4h 35m
Deal found 7/31![Southwest logo]()
$227
This Delta deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” 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.
Sun 9/67:58 pm -
Nonstop1h 32m
Thu 9/107:05 am -
Nonstop1h 25m
Deal found 7/31![Delta logo]()
$233
This United Airlines deal was found by Cheapflights users on 8/1. 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.
Mon 8/312:07 pm -
Nonstop1h 40m
Mon 9/79:33 pm -
Nonstop1h 26m
Deal found 8/1![United Airlines logo]()
$249
This Southwest deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” 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 9/196:35 am -
Nonstop1h 35m
Sun 9/206:45 am -
1 stop7h 05m
Deal found 7/31![Southwest logo]()
$247
This Delta deal was found by Cheapflights users on 8/4. 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.
Tue 12/2912:15 pm -
Nonstop1h 22m
Tue 1/51:35 pm -
Nonstop1h 25m
Deal found 8/4![Delta logo]()
$249
This United Airlines deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/147:35 am -
Nonstop1h 25m
Wed 9/163:35 pm -
Nonstop1h 30m
Deal found 7/31![United Airlines logo]()
$249
This Southwest deal was found by Cheapflights users on 8/4. 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.
Tue 9/296:25 am -
Nonstop1h 35m
Wed 9/3011:10 am -
Nonstop1h 30m
Deal found 8/4![Southwest logo]()
$249
This Delta deal was found by Cheapflights users on 8/2. 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.
Wed 9/98:05 pm -
Nonstop1h 25m
Thu 9/1011:17 am -
Nonstop1h 32m
Deal found 8/2![Delta logo]()
$249
This American Airlines deal was found by Cheapflights users on 8/2. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/308:54 pm -
1 stop4h 17m
Mon 11/25:10 pm -
1 stop3h 24m
Deal found 8/2![American Airlines logo]()
$319
This Delta deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” 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 8/297:58 pm -
Nonstop1h 32m
Mon 8/3111:22 am -
Nonstop1h 31m
Deal found 7/31![Delta logo]()
$249
This Southwest deal was found by Cheapflights users on 8/2. 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.
Mon 10/57:10 am -
Nonstop1h 35m
Fri 10/97:50 pm -
Nonstop1h 30m
Deal found 8/2![Southwest logo]()
$253
This United Airlines deal was found by Cheapflights users on 8/4. 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.
Fri 9/45:25 am -
1 stop5h 41m
Mon 9/75:45 am -
1 stop4h 42m
Deal found 8/4![United Airlines logo]()
$299
This Delta deal was found by Cheapflights users on 8/1. 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.
Thu 10/154:06 pm -
Nonstop1h 26m
Tue 12/1511:29 am -
Nonstop1h 25m
Deal found 8/1![Delta logo]()
$249
This Southwest deal was found by Cheapflights users on 8/1. 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.
Tue 11/105:30 am -
1 stop4h 30m
Wed 11/116:10 pm -
Nonstop1h 15m
Deal found 8/1![Southwest logo]()
$259
This United Airlines deal was found by Cheapflights users on 8/4. 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.
Thu 9/175:25 am -
1 stop5h 32m
Sun 9/206:39 pm -
1 stop4h 19m
Deal found 8/4![United Airlines logo]()
$299
This Delta deal was found by Cheapflights users on 8/3. 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 10/207:56 pm -
Nonstop1h 34m
Thu 10/227:10 am -
Nonstop1h 31m
Deal found 8/3![Delta logo]()
$249
This Southwest deal was found by Cheapflights users on 8/2. 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.
Fri 9/43:50 pm -
1 stop6h 10m
Sun 9/66:25 pm -
Nonstop1h 10m
Deal found 8/2![Southwest logo]()
$262
This United Airlines deal was found by Cheapflights users on 8/4. 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.
Tue 9/112:35 pm -
1 stop3h 25m
Tue 9/83:35 pm -
1 stop3h 50m
Deal found 8/4![United Airlines logo]()
$299
This Delta deal was found by Cheapflights users on 8/3. 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.
Thu 9/177:35 am -
Nonstop1h 21m
Thu 9/248:55 am -
Nonstop1h 26m
Deal found 8/3![Delta logo]()
$249
This Southwest deal was found by Cheapflights users on 8/2. 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.
Wed 9/163:35 pm -
2 stops7h 50m
Wed 9/2312:50 pm -
Nonstop1h 10m
Deal found 8/2![Southwest logo]()
$264
This United Airlines deal was found by Cheapflights users on 8/4. 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 9/27:30 am -
1 stop3h 36m
Sun 9/68:29 am -
1 stop6h 00m
Deal found 8/4![United Airlines logo]()
$299
This Delta deal was found by Cheapflights users on 8/2. 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.
Thu 12/1710:16 am -
Nonstop1h 29m
Thu 1/77:00 am -
Nonstop1h 26m
Deal found 8/2![Delta logo]()
$249
This Kiwi.com deal was found by Cheapflights users on 8/4. 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 8/208:20 am -
1 stop13h 25m
Sun 8/239:35 pm -
2 stops19h 40m
Deal found 8/4![Multiple Airlines logo]()
$527
This United Airlines deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” 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 8/2810:30 am -
1 stop5h 27m
Fri 9/410:41 am -
1 stop5h 19m
Deal found 7/31![United Airlines logo]()
$299
Last-minute flights from Detroit to IllinoisDiscover last-minute flight deals from Detroit to Illinois. Data last updated August 5, 2026 and is based on user searches.
Discover last-minute flight deals from Detroit to Illinois. Data last updated August 5, 2026 and is based on user searches.
This Frontier deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” 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 8/276:00 am -
1 stop5h 55m
Sun 8/309:26 pm -
1 stop12h 46m
Deal found 7/31![Frontier logo]()
$198
This Kiwi.com deal was found by Cheapflights users on 8/1. 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.
Mon 8/316:00 am -
1 stop12h 22m
Mon 9/76:17 pm -
1 stop14h 03m
Deal found 8/1![Frontier logo]()
$123
This Kiwi.com deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” 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 9/36:00 am -
1 stop12h 22m
Mon 9/76:17 pm -
1 stop14h 03m
Deal found 7/31![Frontier logo]()
$148
This Frontier deal was found by Cheapflights users on 8/1. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/55:21 pm -
1 stop6h 47m
Sun 9/61:59 pm -
1 stop10h 05m
Deal found 8/1![Frontier logo]()
$198
This Frontier deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” 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 9/612:07 pm -
1 stop9h 24m
Thu 9/1012:54 pm -
1 stop7h 38m
Deal found 7/30![Frontier logo]()
$199
This Kiwi.com deal was found by Cheapflights users on 8/2. 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.
Thu 9/107:00 am -
1 stop12h 23m
Sat 9/127:11 am -
1 stop15h 16m
Deal found 8/2![Frontier logo]()
$197
This Kiwi.com deal was found by Cheapflights users on 8/3. 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 9/117:00 am -
1 stop7h 10m
Mon 9/142:29 pm -
2 stops19h 14m
Deal found 8/3![Frontier logo]()
$145
This Kiwi.com deal was found by Cheapflights users on 8/2. 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.
Fri 9/117:00 am -
1 stop7h 10m
Sun 9/1310:20 am -
1 stop10h 12m
Deal found 8/2![Frontier logo]()
$155
This Kiwi.com deal was found by Cheapflights users on 8/1. 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.
Mon 9/147:00 am -
1 stop7h 10m
Mon 9/212:29 pm -
1 stop9h 13m
Deal found 8/1![Frontier logo]()
$132
This Kiwi.com deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” 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 9/144:23 pm -
2 stops20h 28m
Mon 9/217:11 am -
1 stop15h 16m
Deal found 7/31![Frontier logo]()
$195
This Kiwi.com deal was found by Cheapflights users on 8/2. 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.
Sat 9/197:55 pm -
1 stop14h 40m
Fri 9/252:29 pm -
1 stop9h 13m
Deal found 8/2![Frontier logo]()
$162
This Kiwi.com deal was found by Cheapflights users on 8/3. 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.
Sun 9/203:25 pm -
1 stop22h 45m
Fri 9/252:29 pm -
1 stop9h 13m
Deal found 8/3![Frontier logo]()
$149
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 August 5, 2026.
Search for one-way flight options from Detroit to Illinois. Find affordable one-way fares based on user searches. Data last updated August 5, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/1. 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.
Mon 8/316:00 am -
1 stop12h 22m
Deal found 8/1![Frontier logo]()
$62
This Kiwi.com deal was found by Cheapflights users on 8/1. 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 9/117:00 am -
1 stop7h 10m
Deal found 8/1![Frontier logo]()
$66
This Trip.com deal was found by Cheapflights users on 8/1. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/217:00 am -
1 stop7h 10m
Deal found 8/1![Frontier logo]()
$68
This Kiwi.com deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” 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.
Sun 11/16:50 am -
1 stop27h 50m
Deal found 7/31![Frontier logo]()
$70
This Kiwi.com deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” 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.
Sun 10/43:25 pm -
1 stop22h 45m
Deal found 7/31![Frontier logo]()
$71
This Kiwi.com deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” 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 10/73:25 pm -
1 stop19h 15m
Deal found 7/31![Frontier logo]()
$72
This Trip.com deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” 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 9/173:25 pm -
1 stop22h 45m
Deal found 7/31![Frontier logo]()
$73
This Kiwi.com deal was found by Cheapflights users on 8/1. 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.
Sun 8/306:00 am -
1 stop12h 22m
Deal found 8/1![Frontier logo]()
$74
This Kiwi.com deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” 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 9/86:40 pm -
1 stop19h 30m
Deal found 7/31![Frontier logo]()
$75
This Kiwi.com deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” 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 9/243:25 pm -
1 stop22h 45m
Deal found 7/31![Frontier logo]()
$76
This Frontier deal was found by Cheapflights users on 8/4. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/2812:07 pm -
1 stop9h 24m
Deal found 8/4![Frontier logo]()
$111
This Super.com deal was found by Cheapflights users on 8/4. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/61:50 pm -
1 stop6h 22m
Deal found 8/4![Frontier logo]()
$112
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 August 5, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $123 (Kiwi.com) |
One-way from | $62 (Kiwi.com) |
Popular in | June |
Cheapest in | September |
Average price | $286 |
Good round-trip deal | $353 or less |
Good one-way deal | $202 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 2,558,603 searches. Data last updated August 5, 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
DetroitSt. Louis
DTW - STL
DTWSTL
Detroit Metropolitan Wayne County
Wed 9/2
10:18 am-5:22 pm
2 stops32h 04m
Lambert-St Louis
Tue 9/8
5:27 pm-9:52 am
1 stop15h 25m
$200
DetroitSt. Louis
DTW - STL
DTWSTL
Detroit Metropolitan Wayne County
Sat 9/5
1:20 pm-1:50 pm
Nonstop1h 30m
Lambert-St Louis
Sun 9/6
10:30 am-8:35 pm
2 stops9h 05m
$212
DetroitChicago
DTW - ORD
DTWORD
Detroit Metropolitan Wayne County
Sat 9/5
3:50 pm-4:17 pm
Nonstop1h 27m
Chicago O'Hare Intl
Sun 9/6
6:59 am-9:23 am
Nonstop1h 24m
$217
DetroitChicago
DTW - MDW
DTWMDW
Detroit Metropolitan Wayne County
Sat 9/5
4:45 pm-4:55 pm
Nonstop1h 10m
Chicago Midway
Sun 9/6
2:45 pm-8:20 pm
1 stop4h 35m
$227
DetroitChicago
DTW - ORD
DTWORD
Detroit Metropolitan Wayne County
Sun 9/6
7:58 pm-8:30 pm
Nonstop1h 32m
Chicago O'Hare Intl
Thu 9/10
7:05 am-9:30 am
Nonstop1h 25m
$233
DetroitSt. Louis
DTW - STL
DTWSTL
Detroit Metropolitan Wayne County
Sat 9/19
6:35 am-7:10 am
Nonstop1h 35m
Lambert-St Louis
Sun 9/20
6:45 am-2:50 pm
1 stop7h 05m
$247
DetroitChicago
DTW - ORD
DTWORD
Detroit Metropolitan Wayne County
Mon 9/21
2:07 pm-2:47 pm
Nonstop1h 40m
Chicago O'Hare Intl
Wed 9/23
6:59 am-9:32 am
Nonstop1h 33m
$249
DetroitChicago
DTW - ORD
DTWORD
Detroit Metropolitan Wayne County
Mon 8/31
2:07 pm-2:47 pm
Nonstop1h 40m
Chicago O'Hare Intl
Mon 9/7
9:33 pm-11:59 pm
Nonstop1h 26m
$249
Quickest round-trip
DetroitChicago
DTW - ORD
DTWORD
Detroit Metropolitan Wayne County
Tue 12/29
12:15 pm-12:37 pm
Nonstop1h 22m
Chicago O'Hare Intl
Tue 1/5
1:35 pm-4:00 pm
Nonstop1h 25m
$249
DetroitChicago
DTW - ORD
DTWORD
Detroit Metropolitan Wayne County
Mon 9/14
7:35 am-8:00 am
Nonstop1h 25m
Chicago O'Hare Intl
Wed 9/16
3:35 pm-6:05 pm
Nonstop1h 30m
$249
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-MDW
DTW-ORD
DTW-MLI
DTW-RFD
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-MDW
DTW-ORD
DTW-MLI
What is the cheapest month to book a flight from Detroit to Illinois?
Currently, September is the cheapest month in which you can book a flight from Detroit to Illinois (average of $197). Flying from Detroit to Illinois in July is currently the most expensive (average of $413). 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 August 5, 2026.
It’s typically best to fly out from Detroit to Illinois in the morning. Doing so could potentially save you 34% 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 August 5, 2026.
The most flights from DTT to USIL are scheduled on a Monday (89 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (18 on average).
How much does it cost to fly round-trip from Detroit to Illinois?
Airfare is below average for this route at the moment.
Detroit to Illinois flights typically cost between $204 and $294 in November.The cheapest round-trip price found within the last 5 days was $189 on Frontier (Nov 2-Nov 10).
How far ahead should I book a flight from Detroit to Illinois?
The best time to book flights from Detroit to Illinois is 74 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 August 1, 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. Sunday evenings 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 5, 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.
Boarding
8.1
Comfort
8.0
Food
7.0
Crew
8.6
Entertainment
7.5
Overall
8.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Boarding
8.1
Comfort
8.0
Food
7.0
Crew
8.6
Entertainment
7.5
Overall
8.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Boarding
8.1
Comfort
8.0
Food
7.0
Crew
8.6
Entertainment
7.5
Overall
8.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Boarding
8.1
Comfort
8.0
Food
7.0
Crew
8.6
Entertainment
7.5
Overall
8.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Boarding
8.1
Comfort
8.0
Food
7.0
Crew
8.6
Entertainment
7.5
Overall
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
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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
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Detroit and Illinois flights
Browse other Detroit and Illinois flight options. Last updated on August 5, 2026.
Popular flight searches
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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 2,558,603 searches. Data last updated August 5, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$70 | Average$236 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$97 | Average$341 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$117 | Average$285 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$117 | Average$381 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$121 | Average$321 | FlexibilityNo cancel fee | On-timeN/A |