$82+ 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 7/21. Fares are subject to change and may not be available on all flights or dates of travel.
DTT — ORD
Jul 20 — Jul 271
Round-trip
1 adult, Economy
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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 June 20, 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 June 20, 2026.
This Kiwi.com deal was found by Cheapflights users on 6/19. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/105:35 pm
DTW
- STL
1 stop16h 22m
Frontier
Mon 7/134:57 pm
STL
- DTW
1 stop6h 43m
Frontier
Deal found 6/19![Frontier logo]()
$167
This Kiwi.com deal was found by Cheapflights users on 6/18. 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 7/175:35 pm
DTW
- STL
1 stop16h 22m
Frontier
Tue 7/216:34 pm
STL
- DTW
1 stop20h 54m
Frontier
Deal found 6/18![Frontier logo]()
$168
This Kiwi.com deal was found by Cheapflights users on 6/18. 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 7/175:35 pm
DTW
- STL
1 stop16h 22m
Frontier
Sat 7/184:57 pm
STL
- DTW
1 stop6h 43m
Frontier
Deal found 6/18![Frontier logo]()
$170
This Kiwi.com deal was found by Cheapflights users on 6/19. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/75:35 pm
DTW
- STL
1 stop16h 22m
Frontier
Mon 8/104:57 pm
STL
- DTW
1 stop19h 36m
Frontier
Deal found 6/19![Frontier logo]()
$171
This Kiwi.com deal was found by Cheapflights users on 6/18. 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.
Mon 7/275:35 pm
DTW
- STL
1 stop25h 02m
Frontier
Sat 8/14:57 pm
STL
- DTW
1 stop19h 36m
Frontier
Deal found 6/18![Frontier logo]()
$172
This Kiwi.com deal was found by Cheapflights users on 6/16. 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 7/142:56 pm
DTW
- STL
1 stop19h 01m
Frontier
Tue 7/216:34 pm
STL
- DTW
1 stop20h 54m
Frontier
Deal found 6/16![Frontier logo]()
$182
This Kiwi.com deal was found by Cheapflights users on 6/16. 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 7/162:56 pm
DTW
- STL
1 stop19h 01m
Frontier
Tue 7/216:34 pm
STL
- DTW
1 stop20h 54m
Frontier
Deal found 6/16![Frontier logo]()
$183
This Kiwi.com deal was found by Cheapflights users on 6/15. 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.
Tue 7/146:10 am
DTW
- STL
1 stop12h 27m
Frontier
Fri 7/174:57 pm
STL
- DTW
1 stop6h 43m
Frontier
Deal found 6/15![Frontier logo]()
$187
This Super.com deal was found by Cheapflights users on 6/19. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/166:00 am
DTW
- ORD
1 stop6h 47m
JetBlue
Sat 10/36:30 am
ORD
- DTW
1 stop9h 02m
JetBlue
Deal found 6/19![JetBlue logo]()
$189
This Kiwi.com deal was found by Cheapflights users on 6/16. 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.
Mon 8/175:35 pm
DTW
- STL
1 stop24h 55m
Frontier
Fri 8/215:33 pm
STL
- DTW
1 stop6h 09m
Frontier
Deal found 6/16![Frontier logo]()
$190
This Kiwi.com deal was found by Cheapflights users on 6/17. 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.
Sat 8/12:56 pm
DTW
- STL
1 stop27h 41m
Frontier
Sat 8/154:57 pm
STL
- DTW
1 stop19h 36m
Frontier
Deal found 6/17![Frontier logo]()
$194
This JetBlue deal was found by Cheapflights users on 6/15. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/145:30 pm
DTW
- ORD
1 stop5h 36m
JetBlue
Tue 9/296:30 am
ORD
- DTW
1 stop9h 02m
JetBlue
Deal found 6/15![JetBlue logo]()
$201
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 June 20, 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 June 20, 2026.
This JetBlue deal was found by Cheapflights users on 6/15. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/145:30 pm
DTW
- ORD
1 stop5h 36m
JetBlue
Tue 9/296:30 am
ORD
- DTW
1 stop9h 02m
JetBlue
Deal found 6/15![JetBlue logo]()
$201
This Southwest deal was found by Cheapflights users on 6/16. 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 7/77:05 am
DTW
- STL
Nonstop1h 35m
Southwest
Tue 7/143:25 pm
STL
- DTW
Nonstop1h 30m
Southwest
Deal found 6/16![Southwest logo]()
$209
This Delta deal was found by Cheapflights users on 6/15. 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 9/1512:35 pm
DTW
- ORD
Nonstop1h 29m
Delta
Wed 9/307:01 am
ORD
- DTW
Nonstop1h 29m
Delta
Deal found 6/15![Delta logo]()
$243
This United Airlines deal was found by Cheapflights users on 6/17. 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.
Tue 8/1812:35 pm
DTW
- ORD
Nonstop1h 29m
United Airlines
Sat 8/226:59 am
ORD
- DTW
Nonstop1h 39m
United Airlines
Deal found 6/17![United Airlines logo]()
$252
This Kiwi.com deal was found by Cheapflights users on 6/19. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/810:08 am
DTW
- RFD
1 stop25h 39m
Multiple Airlines
Mon 8/106:26 pm
RFD
- DTW
1 stop16h 29m
Multiple Airlines
Deal found 6/19![Multiple Airlines logo]()
$267
This American Airlines deal was found by Cheapflights users on 6/15. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/159:20 pm
DTW
- EVV
1 stop3h 39m
American Airlines
Sat 7/187:08 am
EVV
- DTW
1 stop4h 56m
American Airlines
Deal found 6/15![American Airlines logo]()
$357
This JetBlue deal was found by Cheapflights users on 6/19. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/276:00 am
DTW
- ORD
1 stop6h 56m
JetBlue
Wed 10/282:15 pm
ORD
- DTW
1 stop7h 05m
JetBlue
Deal found 6/19![JetBlue logo]()
$210
This Southwest deal was found by Cheapflights users on 6/18. 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.
Sat 7/187:10 am
DTW
- STL
Nonstop1h 35m
Southwest
Sat 7/254:40 pm
STL
- DTW
1 stop4h 50m
Southwest
Deal found 6/18![Southwest logo]()
$219
This Southwest deal was found by Cheapflights users on 6/16. 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 7/146:30 pm
DTW
- STL
Nonstop1h 35m
Southwest
Tue 7/211:45 pm
STL
- DTW
1 stop4h 45m
Southwest
Deal found 6/16![Southwest logo]()
$219
This Delta deal was found by Cheapflights users on 6/15. 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 7/148:00 pm
DTW
- ORD
Nonstop1h 31m
Delta
Tue 7/215:18 pm
ORD
- DTW
Nonstop1h 32m
Delta
Deal found 6/15![Delta logo]()
$243
This United Airlines deal was found by Cheapflights users on 6/15. 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 8/55:30 am
DTW
- ORD
Nonstop1h 26m
United Airlines
Thu 8/64:00 pm
ORD
- DTW
Nonstop1h 38m
United Airlines
Deal found 6/15![United Airlines logo]()
$252
This United Airlines deal was found by Cheapflights users on 6/19. 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.
Tue 8/252:07 pm
DTW
- ORD
Nonstop1h 40m
United Airlines
Thu 8/279:30 pm
ORD
- DTW
Nonstop1h 29m
United Airlines
Deal found 6/19![United Airlines logo]()
$252
This Delta deal was found by Cheapflights users on 6/19. 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 8/89:00 am
DTW
- STL
Nonstop1h 37m
Delta
Mon 8/103:39 pm
STL
- DTW
1 stop7h 07m
Delta
Deal found 6/19![Delta logo]()
$257
This Kiwi.com deal was found by Cheapflights users on 6/18. 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.
Thu 8/66:34 pm
DTW
- RFD
1 stop14h 15m
Multiple Airlines
Mon 8/106:26 pm
RFD
- DTW
1 stop16h 29m
Multiple Airlines
Deal found 6/18![Multiple Airlines logo]()
$291
This Southwest deal was found by Cheapflights users on 6/16. 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 7/88:55 am
DTW
- MDW
Nonstop1h 15m
Southwest
Wed 7/156:10 pm
MDW
- DTW
Nonstop1h 15m
Southwest
Deal found 6/16![Southwest logo]()
$243
This United Airlines deal was found by Cheapflights users on 6/19. 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.
Thu 8/65:30 am
DTW
- ORD
Nonstop1h 23m
United Airlines
Sat 8/83:00 pm
ORD
- DTW
Nonstop1h 39m
United Airlines
Deal found 6/19![United Airlines logo]()
$261
This Southwest deal was found by Cheapflights users on 6/18. 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.
Sat 7/188:55 am
DTW
- MDW
Nonstop1h 15m
Southwest
Sat 7/255:55 pm
MDW
- DTW
Nonstop1h 15m
Southwest
Deal found 6/18![Southwest logo]()
$243
This Delta deal was found by Cheapflights users on 6/18. 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.
Sat 10/1012:15 pm
DTW
- ORD
Nonstop1h 22m
Delta
Mon 10/125:45 pm
ORD
- DTW
Nonstop1h 24m
Delta
Deal found 6/18![Delta logo]()
$271
This Kiwi.com deal was found by Cheapflights users on 6/19. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/225:13 pm
DTW
- RFD
2 stops18h 24m
Multiple Airlines
Fri 7/247:50 pm
RFD
- DTW
1 stop15h 05m
Multiple Airlines
Deal found 6/19![Multiple Airlines logo]()
$313
This Delta deal was found by Cheapflights users on 6/15. 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.
Sat 7/183:56 pm
DTW
- ORD
Nonstop1h 27m
Delta
Tue 7/215:18 pm
ORD
- DTW
Nonstop1h 32m
Delta
Deal found 6/15![Delta logo]()
$273
This American Airlines deal was found by Cheapflights users on 6/19. 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.
Thu 8/69:03 pm
DTW
- EVV
1 stop3h 56m
American Airlines
Sun 8/96:00 am
EVV
- DTW
1 stop5h 16m
American Airlines
Deal found 6/19![American Airlines logo]()
$367
This Southwest deal was found by Cheapflights users on 6/17. 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.
Tue 8/187:05 pm
DTW
- MDW
Nonstop1h 10m
Southwest
Sat 8/227:55 am
MDW
- DTW
Nonstop1h 20m
Southwest
Deal found 6/17![Southwest logo]()
$252
This United Airlines deal was found by Cheapflights users on 6/16. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/146:10 pm
DTW
- ORD
Nonstop1h 33m
United Airlines
Mon 8/179:30 pm
ORD
- DTW
Nonstop1h 29m
United Airlines
Deal found 6/16![United Airlines logo]()
$288
This Southwest deal was found by Cheapflights users on 6/15. 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.
Wed 8/57:05 pm
DTW
- MDW
Nonstop1h 10m
Southwest
Thu 8/68:15 am
MDW
- DTW
Nonstop1h 15m
Southwest
Deal found 6/15![Southwest logo]()
$252
This United Airlines deal was found by Cheapflights users on 6/18. 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 10/97:11 pm
DTW
- ORD
Nonstop1h 35m
United Airlines
Mon 10/126:55 am
ORD
- DTW
Nonstop1h 39m
United Airlines
Deal found 6/18![United Airlines logo]()
$288
This Delta deal was found by Cheapflights users on 6/16. 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.
Wed 7/228:50 am
DTW
- MDW
Nonstop1h 23m
Delta
Sun 7/266:58 pm
MDW
- DTW
Nonstop1h 18m
Delta
Deal found 6/16![Delta logo]()
$289
This Southwest deal was found by Cheapflights users on 6/18. 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 7/143:50 pm
DTW
- MDW
1 stop4h 45m
Southwest
Wed 7/2212:55 pm
MDW
- DTW
Nonstop1h 10m
Southwest
Deal found 6/18![Southwest logo]()
$253
This Delta deal was found by Cheapflights users on 6/16. 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.
Wed 7/812:28 pm
DTW
- STL
Nonstop1h 37m
Delta
Thu 7/96:58 pm
STL
- DTW
1 stop5h 01m
Delta
Deal found 6/16![Delta logo]()
$295
This United Airlines deal was found by Cheapflights users on 6/17. 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.
Mon 7/138:50 am
DTW
- PIA
1 stop4h 48m
United Airlines
Sun 7/192:33 pm
PIA
- DTW
1 stop6h 46m
United Airlines
Deal found 6/17![United Airlines logo]()
$301
This Southwest deal was found by Cheapflights users on 6/16. 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 8/102:40 pm
DTW
- MDW
1 stop5h 40m
Southwest
Wed 8/1212:50 pm
MDW
- DTW
Nonstop1h 10m
Southwest
Deal found 6/16![Southwest logo]()
$262
Last-minute flights from Detroit to IllinoisDiscover last-minute flight deals from Detroit to Illinois. Data last updated June 20, 2026 and is based on user searches.
Discover last-minute flight deals from Detroit to Illinois. Data last updated June 20, 2026 and is based on user searches.
This JetBlue deal was found by Cheapflights users on 6/15. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/47:30 am
DTW
- ORD
1 stop6h 30m
JetBlue
Tue 7/710:56 am
ORD
- DTW
1 stop5h 53m
JetBlue
Deal found 6/15![JetBlue logo]()
$203
This Kiwi.com deal was found by Cheapflights users on 6/17. 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 7/76:10 am
DTW
- STL
1 stop27h 47m
Frontier
Tue 7/146:34 pm
STL
- DTW
1 stop20h 54m
Frontier
Deal found 6/17![Frontier logo]()
$197
This Kiwi.com deal was found by Cheapflights users on 6/16. 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 7/85:13 pm
DTW
- STL
1 stop25h 24m
Frontier
Mon 7/134:57 pm
STL
- DTW
1 stop19h 36m
Frontier
Deal found 6/16![Frontier logo]()
$199
This Kiwi.com deal was found by Cheapflights users on 6/19. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/105:35 pm
DTW
- STL
1 stop16h 22m
Frontier
Mon 7/134:57 pm
STL
- DTW
1 stop6h 43m
Frontier
Deal found 6/19![Frontier logo]()
$167
This Kiwi.com deal was found by Cheapflights users on 6/16. 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 7/142:56 pm
DTW
- STL
1 stop19h 01m
Frontier
Tue 7/216:34 pm
STL
- DTW
1 stop20h 54m
Frontier
Deal found 6/16![Frontier logo]()
$182
This Kiwi.com deal was found by Cheapflights users on 6/15. 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.
Tue 7/146:10 am
DTW
- STL
1 stop12h 27m
Frontier
Fri 7/174:57 pm
STL
- DTW
1 stop6h 43m
Frontier
Deal found 6/15![Frontier logo]()
$187
This Kiwi.com deal was found by Cheapflights users on 6/16. 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 7/149:12 am
DTW
- ORD
1 stop28h 03m
Frontier
Tue 7/218:05 am
ORD
- DTW
1 stop27h 50m
Frontier
Deal found 6/16![Frontier logo]()
$208
This Delta deal was found by Cheapflights users on 6/16. 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 7/148:50 am
DTW
- STL
Nonstop1h 41m
Delta
Tue 7/2110:19 am
STL
- DTW
Nonstop1h 34m
Delta
Deal found 6/16![Delta logo]()
$209
This Kiwi.com deal was found by Cheapflights users on 6/16. 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 7/162:56 pm
DTW
- STL
1 stop19h 01m
Frontier
Tue 7/216:34 pm
STL
- DTW
1 stop20h 54m
Frontier
Deal found 6/16![Frontier logo]()
$183
This Kiwi.com deal was found by Cheapflights users on 6/18. 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 7/175:35 pm
DTW
- STL
1 stop16h 22m
Frontier
Tue 7/216:34 pm
STL
- DTW
1 stop20h 54m
Frontier
Deal found 6/18![Frontier logo]()
$168
This Kiwi.com deal was found by Cheapflights users on 6/18. 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 7/175:35 pm
DTW
- STL
1 stop16h 22m
Frontier
Sat 7/184:57 pm
STL
- DTW
1 stop6h 43m
Frontier
Deal found 6/18![Frontier logo]()
$170
This Kiwi.com deal was found by Cheapflights users on 6/18. 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.
Mon 7/275:35 pm
DTW
- STL
1 stop25h 02m
Frontier
Sat 8/14:57 pm
STL
- DTW
1 stop19h 36m
Frontier
Deal found 6/18![Frontier logo]()
$172
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 June 20, 2026.
Search for one-way flight options from Detroit to Illinois. Find affordable one-way fares based on user searches. Data last updated June 20, 2026.
This Trip.com deal was found by Cheapflights users on 6/18. 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 7/216:10 am
DTW
- STL
1 stop12h 27m
Frontier
Deal found 6/18![Frontier logo]()
$82
This Kiwi.com deal was found by Cheapflights users on 6/19. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/1810:18 am
DTW
- ORD
1 stop27h 42m
Frontier
Deal found 6/19![Frontier logo]()
$83
This Kiwi.com deal was found by Cheapflights users on 6/18. 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.
Thu 7/96:10 am
DTW
- STL
1 stop12h 27m
Frontier
Deal found 6/18![Frontier logo]()
$84
This Kiwi.com deal was found by Cheapflights users on 6/18. 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 7/85:13 pm
DTW
- STL
1 stop25h 24m
Frontier
Deal found 6/18![Frontier logo]()
$86
This Kiwi.com deal was found by Cheapflights users on 6/19. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/166:10 am
DTW
- STL
1 stop12h 27m
Frontier
Deal found 6/19![Frontier logo]()
$87
This Kiwi.com deal was found by Cheapflights users on 6/19. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/155:13 pm
DTW
- STL
1 stop25h 24m
Frontier
Deal found 6/19![Frontier logo]()
$88
This Kiwi.com deal was found by Cheapflights users on 6/20. 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.
Wed 7/225:13 pm
DTW
- STL
1 stop25h 24m
Frontier
Deal found 6/20![Frontier logo]()
$89
This Kiwi.com deal was found by Cheapflights users on 6/17. 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 7/76:10 am
DTW
- STL
1 stop12h 27m
Frontier
Deal found 6/17![Frontier logo]()
$90
This Kiwi.com deal was found by Cheapflights users on 6/16. 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 7/236:10 am
DTW
- STL
1 stop12h 27m
Frontier
Deal found 6/16![Frontier logo]()
$93
This Kiwi.com deal was found by Cheapflights users on 6/19. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/56:40 pm
DTW
- STL
1 stop23h 42m
Frontier
Deal found 6/19![Frontier logo]()
$94
This Expedia deal was found by Cheapflights users on 6/19. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/297:30 am
DTW
- ORD
1 stop6h 29m
JetBlue
Deal found 6/19![JetBlue logo]()
$94
This Super.com deal was found by Cheapflights users on 6/18. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/156:00 am
DTW
- ORD
1 stop6h 47m
JetBlue
Deal found 6/18![JetBlue logo]()
$95
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 June 20, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $167 (Kiwi.com) |
One-way from | $82 (Trip.com) |
Popular in | June |
Cheapest in | September |
Average price | $439 |
Good round-trip deal | $337 or less |
Good one-way deal | $218 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 June 20, 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 - ORD
DTWORD
Detroit Metropolitan Wayne County
Mon 9/14
5:30 pm-10:06 pm
1 stop5h 36m
Chicago O'Hare Intl
Tue 9/29
6:30 am-4:32 pm
1 stop9h 02m
$201
DetroitSt. Louis
DTW - STL
DTWSTL
Detroit Metropolitan Wayne County
Tue 7/7
7:05 am-7:40 am
Nonstop1h 35m
Lambert-St Louis
Tue 7/14
3:25 pm-5:55 pm
Nonstop1h 30m
$209
DetroitChicago
DTW - ORD
DTWORD
Detroit Metropolitan Wayne County
Tue 10/27
6:00 am-11:56 am
1 stop6h 56m
Chicago O'Hare Intl
Wed 10/28
2:15 pm-10:20 pm
1 stop7h 05m
$210
DetroitSt. Louis
DTW - STL
DTWSTL
Detroit Metropolitan Wayne County
Sat 7/18
7:10 am-7:45 am
Nonstop1h 35m
Lambert-St Louis
Sat 7/25
4:40 pm-10:30 pm
1 stop4h 50m
$219
DetroitSt. Louis
DTW - STL
DTWSTL
Detroit Metropolitan Wayne County
Tue 7/14
6:30 pm-7:05 pm
Nonstop1h 35m
Lambert-St Louis
Tue 7/21
1:45 pm-7:30 pm
1 stop4h 45m
$219
DetroitChicago
DTW - ORD
DTWORD
Detroit Metropolitan Wayne County
Tue 9/15
12:35 pm-1:04 pm
Nonstop1h 29m
Chicago O'Hare Intl
Wed 9/30
7:01 am-9:30 am
Nonstop1h 29m
$243
DetroitChicago
DTW - ORD
DTWORD
Detroit Metropolitan Wayne County
Tue 7/14
8:00 pm-8:31 pm
Nonstop1h 31m
Chicago O'Hare Intl
Tue 7/21
5:18 pm-7:50 pm
Nonstop1h 32m
$243
DetroitChicago
DTW - MDW
DTWMDW
Detroit Metropolitan Wayne County
Wed 7/8
8:55 am-9:10 am
Nonstop1h 15m
Chicago Midway
Wed 7/15
6:10 pm-8:25 pm
Nonstop1h 15m
$243
DetroitChicago
DTW - MDW
DTWMDW
Detroit Metropolitan Wayne County
Sat 7/18
8:55 am-9:10 am
Nonstop1h 15m
Chicago Midway
Sat 7/25
5:55 pm-8:10 pm
Nonstop1h 15m
$243
DetroitChicago
DTW - ORD
DTWORD
Detroit Metropolitan Wayne County
Tue 8/18
12:35 pm-1:04 pm
Nonstop1h 29m
Chicago O'Hare Intl
Sat 8/22
6:59 am-9:38 am
Nonstop1h 39m
$252
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-RFD
DTW-EVV
DTW-MDW
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-RFD
DTW-EVV
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 $45). Flying from Detroit to Illinois in June is currently the most expensive (average of $117). 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 June 20, 2026.
It’s typically best to fly out from Detroit to Illinois in the morning. Doing so could potentially save you 31% 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 June 20, 2026.
The most flights from DTT to USIL are scheduled on a Wednesday (94 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (48 on average).
How much does it cost to fly round-trip from Detroit to Illinois?
How far ahead should I book a flight from Detroit to Illinois?
The best time to book flights from Detroit to Illinois is 86 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 June 13, 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 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 June 20, 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
Overall
7.9
Food
7.0
Crew
8.6
Entertainment
7.5
Comfort
8.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Boarding
8.1
Overall
7.9
Food
7.0
Crew
8.6
Entertainment
7.5
Comfort
8.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Boarding
8.1
Overall
7.9
Food
7.0
Crew
8.6
Entertainment
7.5
Comfort
8.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Boarding
8.1
Overall
7.9
Food
7.0
Crew
8.6
Entertainment
7.5
Comfort
8.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Boarding
8.1
Overall
7.9
Food
7.0
Crew
8.6
Entertainment
7.5
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
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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
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 June 20, 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 4 airlines flying from Detroit to Illinois
Discover the top 4 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 June 20, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$97 | Average$277 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$97 | Average$290 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$98 | Average$297 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$101 | Average$358 | FlexibilityNo cancel fee | On-time69% |