$70+ 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 4/27. Fares are subject to change and may not be available on all flights or dates of travel.
DTT — ORD
Apr 17 — Apr 241
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
Find cheap flights from Detroit to Illinois with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Detroit to Illinois
Cheapest
Best
Last-minute
One-way
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 March 18, 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 March 18, 2026.
This Kiwi.com deal was found by Cheapflights users on 3/17. 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 4/217:04 pm
DTW
- STL
1 stop12h 46m
Frontier
Fri 4/248:23 pm
STL
- DTW
1 stop14h 22m
Frontier
Deal found 3/17![Frontier logo]()
$172
This Kiwi.com deal was found by Cheapflights users on 3/16. 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 4/157:05 pm
DTW
- STL
1 stop16h 25m
Frontier
Wed 4/228:23 pm
STL
- DTW
1 stop21h 23m
Frontier
Deal found 3/16![Frontier logo]()
$174
This Kiwi.com deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/135:50 pm
DTW
- ORD
1 stop5h 49m
Frontier
Tue 4/1411:07 am
ORD
- DTW
1 stop6h 00m
Frontier
Deal found 3/13![Frontier logo]()
$175
This Kiwi.com deal was found by Cheapflights users on 3/15. 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 4/216:50 am
DTW
- STL
1 stop25h 00m
Multiple Airlines
Thu 4/2311:25 am
STL
- DTW
1 stop6h 21m
Multiple Airlines
Deal found 3/15![Multiple Airlines logo]()
$176
This Kiwi.com deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/278:43 pm
DTW
- ORD
1 stop14h 19m
Multiple Airlines
Mon 5/45:50 am
ORD
- DTW
1 stop12h 12m
Multiple Airlines
Deal found 3/13![Multiple Airlines logo]()
$177
This Kiwi.com deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/66:20 am
DTW
- MDW
1 stop5h 49m
Multiple Airlines
Sun 5/106:00 am
MDW
- DTW
1 stop12h 02m
Multiple Airlines
Deal found 3/13![Multiple Airlines logo]()
$177
This Kiwi.com deal was found by Cheapflights users on 3/15. 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.
Wed 5/61:58 pm
DTW
- ORD
1 stop6h 59m
Multiple Airlines
Thu 5/1411:51 am
ORD
- DTW
1 stop11h 48m
Multiple Airlines
Deal found 3/15![Multiple Airlines logo]()
$178
This CheapOair deal was found by Cheapflights users on 3/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/1311:34 am
DTW
- ORD
1 stop13h 48m
Spirit Airlines
Fri 4/172:09 pm
ORD
- DTW
1 stop16h 53m
Spirit Airlines
Deal found 3/14![Spirit Airlines logo]()
$179
This Frontier deal was found by Cheapflights users on 3/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/143:50 pm
DTW
- STL
1 stop8h 29m
Frontier
Wed 4/158:23 pm
STL
- DTW
1 stop11h 42m
Frontier
Deal found 3/14![Frontier logo]()
$180
This Frontier deal was found by Cheapflights users on 3/15. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/107:55 am
DTW
- ORD
1 stop13h 42m
Frontier
Thu 5/1410:22 am
ORD
- DTW
1 stop6h 50m
Frontier
Deal found 3/15![Frontier logo]()
$180
This Frontier deal was found by Cheapflights users on 3/15. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/185:09 pm
DTW
- MDW
1 stop6h 05m
Frontier
Tue 4/216:10 am
MDW
- DTW
1 stop10h 57m
Frontier
Deal found 3/15![Frontier logo]()
$180
This Kiwi.com deal was found by Cheapflights users on 3/16. 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.
Fri 4/248:49 pm
DTW
- STL
1 stop11h 01m
Frontier
Mon 4/278:23 pm
STL
- DTW
1 stop14h 15m
Frontier
Deal found 3/16![Frontier logo]()
$181
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 March 18, 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 March 18, 2026.
This Southwest deal was found by Cheapflights users on 3/17. 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 5/57:10 pm
DTW
- STL
Nonstop1h 45m
Southwest
Tue 5/193:55 pm
STL
- DTW
1 stop3h 20m
Southwest
Deal found 3/17![Southwest logo]()
$207
This Delta deal was found by Cheapflights users on 3/17. 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.
Sat 5/23:50 pm
DTW
- ORD
Nonstop1h 28m
Delta
Mon 5/45:04 pm
ORD
- DTW
Nonstop1h 20m
Delta
Deal found 3/17![Delta logo]()
$274
This United Airlines deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/308:11 pm
DTW
- ORD
Nonstop1h 36m
United Airlines
Sat 5/27:30 am
ORD
- DTW
Nonstop1h 36m
United Airlines
Deal found 3/13![United Airlines logo]()
$275
This Kiwi.com deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/2712:57 pm
DTW
- EVV
1 stop7h 09m
Multiple Airlines
Mon 5/47:46 pm
EVV
- DTW
2 stops28h 13m
Multiple Airlines
Deal found 3/13![Multiple Airlines logo]()
$304
This American Airlines deal was found by Cheapflights users on 3/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/97:49 pm
DTW
- PIA
1 stop5h 03m
American Airlines
Mon 4/135:02 am
PIA
- DTW
1 stop5h 15m
American Airlines
Deal found 3/17![American Airlines logo]()
$309
This Southwest deal was found by Cheapflights users on 3/16. 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 4/157:00 am
DTW
- STL
Nonstop1h 45m
Southwest
Wed 4/2210:30 am
STL
- DTW
Nonstop1h 30m
Southwest
Deal found 3/16![Southwest logo]()
$213
This Southwest deal was found by Cheapflights users on 3/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/68:10 pm
DTW
- STL
Nonstop1h 45m
Southwest
Wed 4/810:25 am
STL
- DTW
1 stop4h 10m
Southwest
Deal found 3/14![Southwest logo]()
$223
This Southwest deal was found by Cheapflights users on 3/15. 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.
Mon 4/67:00 am
DTW
- STL
Nonstop1h 45m
Southwest
Tue 4/72:30 pm
STL
- DTW
2 stops7h 00m
Southwest
Deal found 3/15![Southwest logo]()
$228
This Delta deal was found by Cheapflights users on 3/12. Clicking the “Pick Dates” 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 4/155:40 pm
DTW
- MDW
Nonstop1h 18m
Delta
Fri 4/179:27 am
MDW
- DTW
Nonstop1h 12m
Delta
Deal found 3/12![Delta logo]()
$279
This United Airlines deal was found by Cheapflights users on 3/17. 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 4/147:04 pm
DTW
- STL
1 stop5h 53m
United Airlines
Wed 4/157:45 am
STL
- DTW
2 stops9h 38m
United Airlines
Deal found 3/17![United Airlines logo]()
$282
This Southwest deal was found by Cheapflights users on 3/16. 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 5/25:50 am
DTW
- STL
2 stops8h 45m
Southwest
Tue 5/55:35 am
STL
- DTW
1 stop3h 10m
Southwest
Deal found 3/16![Southwest logo]()
$230
This American Airlines deal was found by Cheapflights users on 3/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/241:02 pm
DTW
- MLI
1 stop6h 02m
American Airlines
Sat 9/54:21 pm
MLI
- DTW
1 stop7h 19m
American Airlines
Deal found 3/17![American Airlines logo]()
$309
This Delta deal was found by Cheapflights users on 3/16. 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.
Sat 4/253:50 pm
DTW
- ORD
Nonstop1h 28m
Delta
Sun 4/267:00 am
ORD
- DTW
Nonstop1h 30m
Delta
Deal found 3/16![Delta logo]()
$283
This United Airlines deal was found by Cheapflights users on 3/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/251:45 pm
DTW
- MLI
2 stops10h 17m
United Airlines
Sun 4/266:30 am
MLI
- DTW
1 stop5h 50m
United Airlines
Deal found 3/14![United Airlines logo]()
$310
This Delta deal was found by Cheapflights users on 3/16. 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.
Fri 5/158:15 am
DTW
- ORD
Nonstop1h 30m
Delta
Sun 5/177:00 pm
ORD
- DTW
Nonstop1h 29m
Delta
Deal found 3/16![Delta logo]()
$286
This Southwest deal was found by Cheapflights users on 3/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/76:35 am
DTW
- STL
2 stops7h 25m
Southwest
Wed 4/86:35 am
STL
- DTW
1 stop4h 25m
Southwest
Deal found 3/14![Southwest logo]()
$238
This American Airlines deal was found by Cheapflights users on 3/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/18:20 am
DTW
- BMI
1 stop3h 41m
American Airlines
Sun 4/55:00 am
BMI
- DTW
1 stop3h 56m
American Airlines
Deal found 3/17![American Airlines logo]()
$319
This Delta deal was found by Cheapflights users on 3/15. 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 4/187:30 am
DTW
- ORD
Nonstop1h 31m
Delta
Mon 4/207:00 am
ORD
- DTW
Nonstop1h 30m
Delta
Deal found 3/15![Delta logo]()
$294
This United Airlines deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/37:28 am
DTW
- CMI
1 stop6h 22m
United Airlines
Sun 7/57:34 pm
CMI
- DTW
1 stop3h 24m
United Airlines
Deal found 3/13![United Airlines logo]()
$338
This Southwest deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/98:30 pm
DTW
- MDW
Nonstop1h 15m
Southwest
Mon 4/1312:45 pm
MDW
- DTW
Nonstop1h 10m
Southwest
Deal found 3/13![Southwest logo]()
$259
This Kiwi.com deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/206:05 pm
DTW
- RFD
2 stops17h 32m
Multiple Airlines
Sun 6/711:27 am
RFD
- DTW
1 stop11h 32m
Multiple Airlines
Deal found 3/13![Multiple Airlines logo]()
$426
This American Airlines deal was found by Cheapflights users on 3/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/31:04 pm
DTW
- CMI
1 stop6h 02m
American Airlines
Sun 7/56:04 am
CMI
- DTW
1 stop5h 29m
American Airlines
Deal found 3/14![American Airlines logo]()
$353
This Delta deal was found by Cheapflights users on 3/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/227:45 pm
DTW
- ORD
Nonstop1h 29m
Delta
Mon 5/257:00 pm
ORD
- DTW
Nonstop1h 29m
Delta
Deal found 3/17![Delta logo]()
$295
This Southwest deal was found by Cheapflights users on 3/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/258:35 am
DTW
- MDW
Nonstop1h 20m
Southwest
Tue 4/286:05 pm
MDW
- DTW
Nonstop1h 10m
Southwest
Deal found 3/14![Southwest logo]()
$263
This Delta deal was found by Cheapflights users on 3/15. 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.
Sun 6/149:00 am
DTW
- ORD
Nonstop1h 24m
Delta
Tue 7/77:10 am
ORD
- DTW
Nonstop1h 20m
Delta
Deal found 3/15![Delta logo]()
$295
This United Airlines deal was found by Cheapflights users on 3/16. 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.
Thu 5/218:50 am
DTW
- CMI
1 stop5h 00m
United Airlines
Mon 5/259:49 am
CMI
- DTW
1 stop4h 40m
United Airlines
Deal found 3/16![United Airlines logo]()
$358
This American Airlines deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/271:33 pm
DTW
- EVV
1 stop5h 20m
American Airlines
Mon 5/46:23 pm
EVV
- DTW
1 stop4h 02m
American Airlines
Deal found 3/13![American Airlines logo]()
$385
This Delta deal was found by Cheapflights users on 3/17. 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.
Sat 6/64:00 pm
DTW
- ORD
Nonstop1h 29m
Delta
Sat 6/207:10 am
ORD
- DTW
Nonstop1h 20m
Delta
Deal found 3/17![Delta logo]()
$295
This United Airlines deal was found by Cheapflights users on 3/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/238:50 am
DTW
- CMI
1 stop5h 00m
United Airlines
Wed 5/271:32 pm
CMI
- DTW
1 stop4h 00m
United Airlines
Deal found 3/14![United Airlines logo]()
$358
This Southwest deal was found by Cheapflights users on 3/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/185:05 pm
DTW
- MDW
Nonstop1h 10m
Southwest
Mon 4/208:00 am
MDW
- DTW
Nonstop1h 10m
Southwest
Deal found 3/14![Southwest logo]()
$274
Last-minute flights from Detroit to IllinoisDiscover last-minute flight deals from Detroit to Illinois. Data last updated March 18, 2026 and is based on user searches.
Discover last-minute flight deals from Detroit to Illinois. Data last updated March 18, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 3/12. Clicking the “Pick Dates” 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 4/68:59 pm
DTW
- ORD
1 stop12h 02m
Multiple Airlines
Tue 4/1411:07 am
ORD
- DTW
1 stop6h 00m
Multiple Airlines
Deal found 3/12![Multiple Airlines logo]()
$181
This Frontier deal was found by Cheapflights users on 3/12. Clicking the “Pick Dates” 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 4/1111:54 am
DTW
- ORD
1 stop13h 44m
Frontier
Thu 4/161:27 pm
ORD
- DTW
1 stop10h 19m
Frontier
Deal found 3/12![Frontier logo]()
$180
This Kiwi.com deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/135:50 pm
DTW
- ORD
1 stop5h 49m
Frontier
Tue 4/1411:07 am
ORD
- DTW
1 stop6h 00m
Frontier
Deal found 3/13![Frontier logo]()
$175
This CheapOair deal was found by Cheapflights users on 3/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/1311:34 am
DTW
- ORD
1 stop13h 48m
Spirit Airlines
Fri 4/172:09 pm
ORD
- DTW
1 stop16h 53m
Spirit Airlines
Deal found 3/14![Spirit Airlines logo]()
$179
This Frontier deal was found by Cheapflights users on 3/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/143:50 pm
DTW
- STL
1 stop8h 29m
Frontier
Wed 4/158:23 pm
STL
- DTW
1 stop11h 42m
Frontier
Deal found 3/14![Frontier logo]()
$180
This Kiwi.com deal was found by Cheapflights users on 3/16. 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 4/157:05 pm
DTW
- STL
1 stop16h 25m
Frontier
Wed 4/228:23 pm
STL
- DTW
1 stop21h 23m
Frontier
Deal found 3/16![Frontier logo]()
$174
This Frontier deal was found by Cheapflights users on 3/15. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/185:09 pm
DTW
- MDW
1 stop6h 05m
Frontier
Tue 4/216:10 am
MDW
- DTW
1 stop10h 57m
Frontier
Deal found 3/15![Frontier logo]()
$180
This Kiwi.com deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/187:55 am
DTW
- ORD
1 stop9h 26m
Frontier
Mon 4/204:28 pm
ORD
- DTW
1 stop18h 10m
Frontier
Deal found 3/13![Frontier logo]()
$182
This Kiwi.com deal was found by Cheapflights users on 3/17. 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 4/217:04 pm
DTW
- STL
1 stop12h 46m
Frontier
Fri 4/248:23 pm
STL
- DTW
1 stop14h 22m
Frontier
Deal found 3/17![Frontier logo]()
$172
This Kiwi.com deal was found by Cheapflights users on 3/15. 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 4/216:50 am
DTW
- STL
1 stop25h 00m
Multiple Airlines
Thu 4/2311:25 am
STL
- DTW
1 stop6h 21m
Multiple Airlines
Deal found 3/15![Multiple Airlines logo]()
$176
This Kiwi.com deal was found by Cheapflights users on 3/16. 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.
Fri 4/248:49 pm
DTW
- STL
1 stop11h 01m
Frontier
Mon 4/278:23 pm
STL
- DTW
1 stop14h 15m
Frontier
Deal found 3/16![Frontier logo]()
$181
This Kiwi.com deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/278:43 pm
DTW
- ORD
1 stop14h 19m
Multiple Airlines
Mon 5/45:50 am
ORD
- DTW
1 stop12h 12m
Multiple Airlines
Deal found 3/13![Multiple Airlines logo]()
$177
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 March 18, 2026.
Search for one-way flight options from Detroit to Illinois. Find affordable one-way fares based on user searches. Data last updated March 18, 2026.
This Kiwi.com deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/278:43 pm
DTW
- ORD
1 stop14h 19m
Frontier
Deal found 3/13![Frontier logo]()
$70
This Kiwi.com deal was found by Cheapflights users on 3/15. 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.
Wed 4/158:18 pm
DTW
- MDW
1 stop17h 42m
Multiple Airlines
Deal found 3/15![Multiple Airlines logo]()
$70
This Kiwi.com deal was found by Cheapflights users on 3/15. 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 4/145:34 pm
DTW
- MDW
1 stop5h 40m
Multiple Airlines
Deal found 3/15![Multiple Airlines logo]()
$71
This Kiwi.com deal was found by Cheapflights users on 3/15. 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 4/146:05 am
DTW
- ORD
1 stop11h 55m
Multiple Airlines
Deal found 3/15![Multiple Airlines logo]()
$72
This Kiwi.com deal was found by Cheapflights users on 3/17. 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 4/147:04 pm
DTW
- ORD
1 stop22h 56m
Frontier
Deal found 3/17![Frontier logo]()
$73
This Kiwi.com deal was found by Cheapflights users on 3/17. 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 4/147:04 pm
DTW
- MDW
1 stop28h 10m
Frontier
Deal found 3/17![Frontier logo]()
$73
This Kiwi.com deal was found by Cheapflights users on 3/17. 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.
Mon 4/139:53 pm
DTW
- MDW
1 stop16h 07m
Multiple Airlines
Deal found 3/17![Multiple Airlines logo]()
$74
This Kiwi.com deal was found by Cheapflights users on 3/15. 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.
Mon 4/1311:34 am
DTW
- ORD
1 stop13h 48m
Spirit Airlines
Deal found 3/15![Spirit Airlines logo]()
$76
This Kiwi.com deal was found by Cheapflights users on 3/16. 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 4/157:05 pm
DTW
- ORD
1 stop28h 34m
Frontier
Deal found 3/16![Frontier logo]()
$77
This Kiwi.com deal was found by Cheapflights users on 3/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/2212:33 pm
DTW
- MDW
1 stop10h 41m
Frontier
Deal found 3/17![Frontier logo]()
$77
This Kiwi.com deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/135:50 pm
DTW
- ORD
1 stop24h 10m
Frontier
Deal found 3/13![Frontier logo]()
$78
This Kiwi.com deal was found by Cheapflights users on 3/16. 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 4/135:50 pm
DTW
- MDW
1 stop26h 41m
Frontier
Deal found 3/16![Frontier logo]()
$78
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 March 18, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $172 (Kiwi.com) |
One-way from | $70 (Kiwi.com) |
Popular in | May |
Cheapest in | September |
Average price | $291 |
Good round-trip deal | $390 or less |
Good one-way deal | $208 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 March 18, 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
Tue 5/5
7:10 pm-7:55 pm
Nonstop1h 45m
Lambert-St Louis
Tue 5/19
3:55 pm-8:15 pm
1 stop3h 20m
$207
DetroitSt. Louis
DTW - STL
DTWSTL
Detroit Metropolitan Wayne County
Wed 4/15
7:00 am-7:45 am
Nonstop1h 45m
Lambert-St Louis
Wed 4/22
10:30 am-1:00 pm
Nonstop1h 30m
$213
DetroitSt. Louis
DTW - STL
DTWSTL
Detroit Metropolitan Wayne County
Mon 4/6
8:10 pm-8:55 pm
Nonstop1h 45m
Lambert-St Louis
Wed 4/8
10:25 am-3:35 pm
1 stop4h 10m
$223
DetroitSt. Louis
DTW - STL
DTWSTL
Detroit Metropolitan Wayne County
Mon 4/6
7:00 am-7:45 am
Nonstop1h 45m
Lambert-St Louis
Tue 4/7
2:30 pm-10:30 pm
2 stops7h 00m
$228
DetroitSt. Louis
DTW - STL
DTWSTL
Detroit Metropolitan Wayne County
Sat 5/2
5:50 am-1:35 pm
2 stops8h 45m
Lambert-St Louis
Tue 5/5
5:35 am-9:45 am
1 stop3h 10m
$230
DetroitSt. Louis
DTW - STL
DTWSTL
Detroit Metropolitan Wayne County
Tue 4/7
6:35 am-1:00 pm
2 stops7h 25m
Lambert-St Louis
Wed 4/8
6:35 am-12:00 pm
1 stop4h 25m
$238
DetroitChicago
DTW - MDW
DTWMDW
Detroit Metropolitan Wayne County
Thu 4/9
8:30 pm-8:45 pm
Nonstop1h 15m
Chicago Midway
Mon 4/13
12:45 pm-2:55 pm
Nonstop1h 10m
$259
DetroitChicago
DTW - MDW
DTWMDW
Detroit Metropolitan Wayne County
Sat 4/25
8:35 am-8:55 am
Nonstop1h 20m
Chicago Midway
Tue 4/28
6:05 pm-8:15 pm
Nonstop1h 10m
$263
DetroitChicago
DTW - ORD
DTWORD
Detroit Metropolitan Wayne County
Sat 5/2
3:50 pm-4:18 pm
Nonstop1h 28m
Chicago O'Hare Intl
Mon 5/4
5:04 pm-7:24 pm
Nonstop1h 20m
$274
Quickest round-trip
DetroitChicago
DTW - MDW
DTWMDW
Detroit Metropolitan Wayne County
Sat 4/18
5:05 pm-5:15 pm
Nonstop1h 10m
Chicago Midway
Mon 4/20
8:00 am-10:10 am
Nonstop1h 10m
$274
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-EVV
DTW-PIA
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-EVV
DTW-PIA
What is the cheapest month to book a flight from Detroit to Illinois?
Currently, November is the cheapest month in which you can book a flight from Detroit to Illinois (average of $53). Flying from Detroit to Illinois in February is currently the most expensive (average of $143). 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 March 18, 2026.
It’s typically best to fly out from Detroit to Illinois in the morning. Doing so could potentially save you 27% on the flight price compared to flying at noon, which is usually more expensive.
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 March 14, 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.
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 March 18, 2026.
The most flights from DTT to USIL are scheduled on a Monday (78 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (36 on average).
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 March 18, 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.
Overall
8.0
Boarding
8.1
Crew
8.6
Food
7.0
Entertainment
7.5
Comfort
8.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
Overall
8.0
Boarding
8.1
Crew
8.6
Food
7.0
Entertainment
7.5
Comfort
8.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
Overall
8.0
Boarding
8.1
Crew
8.6
Food
7.0
Entertainment
7.5
Comfort
8.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
Overall
8.0
Boarding
8.1
Crew
8.6
Food
7.0
Entertainment
7.5
Comfort
8.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
Overall
8.0
Boarding
8.1
Crew
8.6
Food
7.0
Entertainment
7.5
Comfort
8.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
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.
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes
Complete your trip
Flights by cabin class
Other flight options
Popular flights
Top destinations
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 March 18, 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 March 18, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$91 | Average$269 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$94 | Average$350 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$97 | Average$257 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$97 | Average$279 | FlexibilityNo cancel fee | On-time63% |