$89+ Cheap flights from Louisville (SDF) 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 8/25. Fares are subject to change and may not be available on all flights or dates of travel.
SDF — ORD
Jun 29 — Jul 61
Round-trip
1 adult, Economy
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Find cheap flights from Louisville to Illinois with Cheapflights
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Cheapest flights from Louisville to IllinoisExplore the most affordable flight options available from Louisville to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 30, 2026.
Explore the most affordable flight options available from Louisville to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 30, 2026.
This Kiwi.com deal was found by Cheapflights users on 5/27. Clicking the “Pick Dates” 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 8/109:10 pm
SDF
- ORD
1 stop16h 05m
Multiple Airlines
Fri 8/148:05 am
ORD
- SDF
1 stop11h 15m
Multiple Airlines
Deal found 5/27![Multiple Airlines logo]()
$217
This Southwest deal was found by Cheapflights users on 5/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/37:10 pm
SDF
- MDW
Nonstop1h 15m
Southwest
Thu 9/1012:10 pm
MDW
- SDF
Nonstop1h 15m
Southwest
Deal found 5/29![Southwest logo]()
$244
This Delta deal was found by Cheapflights users on 5/29. Clicking the “Pick Dates” 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 8/2610:34 am
SDF
- ORD
1 stop3h 39m
Delta
Fri 8/286:51 am
ORD
- SDF
1 stop6h 00m
Delta
Deal found 5/29![Delta logo]()
$251
This American Airlines deal was found by Cheapflights users on 5/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/46:00 am
SDF
- ORD
1 stop7h 19m
American Airlines
Sat 7/43:46 pm
ORD
- SDF
Nonstop1h 36m
American Airlines
Deal found 5/28![American Airlines logo]()
$253
This American Airlines deal was found by Cheapflights users on 5/26. Clicking the “Pick Dates” 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.
Tue 6/307:18 pm
SDF
- ORD
Nonstop1h 56m
American Airlines
Wed 7/18:00 am
ORD
- SDF
Nonstop1h 35m
American Airlines
Deal found 5/26![American Airlines logo]()
$257
This Southwest deal was found by Cheapflights users on 5/26. Clicking the “Pick Dates” 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 6/234:15 pm
SDF
- MDW
Nonstop1h 15m
Southwest
Tue 6/307:45 am
MDW
- SDF
Nonstop1h 20m
Southwest
Deal found 5/26![Southwest logo]()
$257
This American Airlines deal was found by Cheapflights users on 5/25. Clicking the “Pick Dates” 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.
Tue 7/76:48 am
SDF
- ORD
Nonstop1h 47m
American Airlines
Tue 7/147:27 am
ORD
- SDF
Nonstop1h 36m
American Airlines
Deal found 5/25![American Airlines logo]()
$264
This United Airlines deal was found by Cheapflights users on 5/28. Clicking the “Pick Dates” 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 8/2610:23 am
SDF
- ORD
Nonstop1h 40m
United Airlines
Sat 8/292:00 pm
ORD
- SDF
Nonstop1h 38m
United Airlines
Deal found 5/28![United Airlines logo]()
$274
This Southwest deal was found by Cheapflights users on 5/26. Clicking the “Pick Dates” 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 8/84:50 pm
SDF
- MDW
Nonstop1h 20m
Southwest
Wed 8/121:00 pm
MDW
- SDF
Nonstop1h 15m
Southwest
Deal found 5/26![Southwest logo]()
$274
This United Airlines deal was found by Cheapflights users on 5/28. Clicking the “Pick Dates” 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 7/410:04 am
SDF
- ORD
Nonstop1h 36m
United Airlines
Sat 7/44:25 pm
ORD
- SDF
Nonstop1h 31m
United Airlines
Deal found 5/28![United Airlines logo]()
$275
This Southwest deal was found by Cheapflights users on 5/28. Clicking the “Pick Dates” 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 7/48:50 am
SDF
- MDW
Nonstop1h 15m
Southwest
Sat 7/43:40 pm
MDW
- SDF
Nonstop1h 10m
Southwest
Deal found 5/28![Southwest logo]()
$275
This Delta deal was found by Cheapflights users on 5/27. Clicking the “Pick Dates” 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 6/3010:35 am
SDF
- ORD
1 stop6h 51m
Delta
Wed 7/111:30 am
ORD
- SDF
1 stop4h 16m
Delta
Deal found 5/27![Delta logo]()
$277
Best flights from Louisville to IllinoisDiscover carefully curated flight deals from Louisville to Illinois that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated May 30, 2026.
Discover carefully curated flight deals from Louisville to Illinois that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated May 30, 2026.
This Delta deal was found by Cheapflights users on 5/27. Clicking the “Pick Dates” 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 6/307:49 am
SDF
- MDW
1 stop5h 57m
Delta
Wed 7/19:17 am
MDW
- SDF
1 stop3h 22m
Delta
Deal found 5/27![Delta logo]()
$277
This United Airlines deal was found by Cheapflights users on 5/27. Clicking the “Pick Dates” 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 6/295:50 pm
SDF
- ORD
Nonstop1h 50m
United Airlines
Tue 6/305:50 pm
ORD
- SDF
Nonstop1h 33m
United Airlines
Deal found 5/27![United Airlines logo]()
$286
This Southwest deal was found by Cheapflights users on 5/26. Clicking the “Pick Dates” 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 8/33:35 pm
SDF
- MDW
Nonstop1h 15m
Southwest
Wed 8/52:00 pm
MDW
- SDF
2 stops5h 35m
Southwest
Deal found 5/26![Southwest logo]()
$301
This American Airlines deal was found by Cheapflights users on 5/29. Clicking the “Pick Dates” 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.
Tue 7/76:48 am
SDF
- MLI
1 stop5h 35m
American Airlines
Thu 7/911:53 am
MLI
- SDF
2 stops11h 41m
American Airlines
Deal found 5/29![American Airlines logo]()
$588
This Southwest deal was found by Cheapflights users on 5/27. Clicking the “Pick Dates” 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 7/147:25 am
SDF
- MDW
2 stops7h 10m
Southwest
Thu 7/1612:45 pm
MDW
- SDF
Nonstop1h 10m
Southwest
Deal found 5/27![Southwest logo]()
$301
This United Airlines deal was found by Cheapflights users on 5/27. Clicking the “Pick Dates” 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 8/77:55 pm
SDF
- ORD
Nonstop1h 45m
United Airlines
Mon 8/315:59 pm
ORD
- SDF
Nonstop1h 37m
United Airlines
Deal found 5/27![United Airlines logo]()
$303
This Delta deal was found by Cheapflights users on 5/25. Clicking the “Pick Dates” 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 10/2210:15 am
SDF
- ORD
1 stop3h 22m
Delta
Sat 10/2411:30 am
ORD
- SDF
1 stop5h 10m
Delta
Deal found 5/25![Delta logo]()
$317
This United Airlines deal was found by Cheapflights users on 5/29. Clicking the “Pick Dates” 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 7/62:10 pm
SDF
- ORD
Nonstop1h 40m
United Airlines
Thu 7/96:59 am
ORD
- SDF
Nonstop1h 27m
United Airlines
Deal found 5/29![United Airlines logo]()
$315
This Southwest deal was found by Cheapflights users on 5/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/158:10 pm
SDF
- STL
1 stop3h 25m
Southwest
Sat 10/1712:05 pm
STL
- SDF
2 stops9h 15m
Southwest
Deal found 5/28![Southwest logo]()
$316
This Delta deal was found by Cheapflights users on 5/29. Clicking the “Pick Dates” 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 8/217:55 am
SDF
- ORD
1 stop6h 18m
Delta
Sun 8/236:51 am
ORD
- SDF
1 stop6h 00m
Delta
Deal found 5/29![Delta logo]()
$335
This Southwest deal was found by Cheapflights users on 5/29. Clicking the “Pick Dates” 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 7/147:25 am
SDF
- MDW
2 stops7h 10m
Southwest
Fri 7/177:15 am
MDW
- SDF
1 stop3h 45m
Southwest
Deal found 5/29![Southwest logo]()
$320
This Delta deal was found by Cheapflights users on 5/27. Clicking the “Pick Dates” 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 7/237:50 am
SDF
- MDW
1 stop5h 48m
Delta
Sun 7/269:19 am
MDW
- SDF
1 stop3h 23m
Delta
Deal found 5/27![Delta logo]()
$335
This United Airlines deal was found by Cheapflights users on 5/29. Clicking the “Pick Dates” 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 6/267:55 pm
SDF
- ORD
Nonstop1h 45m
United Airlines
Mon 6/296:55 am
ORD
- SDF
Nonstop1h 27m
United Airlines
Deal found 5/29![United Airlines logo]()
$337
This Southwest deal was found by Cheapflights users on 5/27. Clicking the “Pick Dates” 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 7/233:35 pm
SDF
- MDW
Nonstop1h 15m
Southwest
Thu 7/235:20 pm
MDW
- SDF
1 stop6h 10m
Southwest
Deal found 5/27![Southwest logo]()
$325
This Delta deal was found by Cheapflights users on 5/29. Clicking the “Pick Dates” 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 6/265:26 pm
SDF
- ORD
1 stop4h 05m
Delta
Mon 6/292:07 pm
ORD
- SDF
1 stop6h 08m
Delta
Deal found 5/29![Delta logo]()
$357
This Southwest deal was found by Cheapflights users on 5/29. Clicking the “Pick Dates” 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 am
SDF
- MDW
2 stops9h 20m
Southwest
Fri 8/79:00 am
MDW
- SDF
2 stops10h 30m
Southwest
Deal found 5/29![Southwest logo]()
$325
This United Airlines deal was found by Cheapflights users on 5/26. Clicking the “Pick Dates” 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 6/187:47 pm
SDF
- ORD
Nonstop1h 43m
United Airlines
Sun 6/216:59 am
ORD
- SDF
Nonstop1h 27m
United Airlines
Deal found 5/26![United Airlines logo]()
$359
This United Airlines deal was found by Cheapflights users on 5/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/85:15 am
SDF
- ORD
Nonstop1h 41m
United Airlines
Sat 10/1012:55 pm
ORD
- SDF
1 stop5h 14m
United Airlines
Deal found 5/26![United Airlines logo]()
$364
This Southwest deal was found by Cheapflights users on 5/25. Clicking the “Pick Dates” 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 6/248:45 am
SDF
- STL
1 stop3h 30m
Southwest
Mon 6/298:55 am
STL
- SDF
1 stop5h 00m
Southwest
Deal found 5/25![Southwest logo]()
$345
This Delta deal was found by Cheapflights users on 5/29. Clicking the “Pick Dates” 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 11/157:20 am
SDF
- STL
1 stop7h 00m
Delta
Sun 11/296:45 am
STL
- SDF
1 stop5h 54m
Delta
Deal found 5/29![Delta logo]()
$395
This United Airlines deal was found by Cheapflights users on 5/28. Clicking the “Pick Dates” 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 8/211:56 pm
SDF
- ORD
1 stop5h 41m
United Airlines
Sun 8/235:59 pm
ORD
- SDF
Nonstop1h 37m
United Airlines
Deal found 5/28![United Airlines logo]()
$376
This American Airlines deal was found by Cheapflights users on 5/26. Clicking the “Pick Dates” 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 6/108:15 am
SDF
- MLI
2 stops11h 07m
American Airlines
Sun 6/146:00 am
MLI
- SDF
2 stops7h 52m
American Airlines
Deal found 5/26![American Airlines logo]()
$608
This Southwest deal was found by Cheapflights users on 5/27. Clicking the “Pick Dates” 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.
Sun 9/136:25 pm
SDF
- STL
1 stop5h 35m
Southwest
Wed 9/166:30 am
STL
- SDF
1 stop3h 45m
Southwest
Deal found 5/27![Southwest logo]()
$353
This United Airlines deal was found by Cheapflights users on 5/29. Clicking the “Pick Dates” 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 7/110:05 am
SDF
- ORD
1 stop5h 24m
United Airlines
Mon 7/69:25 pm
ORD
- SDF
Nonstop1h 34m
United Airlines
Deal found 5/29![United Airlines logo]()
$377
This Southwest deal was found by Cheapflights users on 5/27. Clicking the “Pick Dates” 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 6/2712:30 pm
SDF
- STL
2 stops6h 30m
Southwest
Sun 6/285:50 am
STL
- SDF
1 stop3h 25m
Southwest
Deal found 5/27![Southwest logo]()
$380
This United Airlines deal was found by Cheapflights users on 5/28. Clicking the “Pick Dates” 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 6/127:47 pm
SDF
- MLI
1 stop4h 29m
United Airlines
Tue 6/162:31 pm
MLI
- SDF
1 stop3h 29m
United Airlines
Deal found 5/28![United Airlines logo]()
$389
This Delta deal was found by Cheapflights users on 5/29. Clicking the “Pick Dates” 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 7/71:00 pm
SDF
- MLI
1 stop4h 25m
Delta
Thu 7/911:08 am
MLI
- SDF
1 stop7h 14m
Delta
Deal found 5/29![Delta logo]()
$483
This Southwest deal was found by Cheapflights users on 5/25. Clicking the “Pick Dates” 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 6/206:05 pm
SDF
- STL
1 stop5h 10m
Southwest
Sun 6/215:50 am
STL
- SDF
1 stop3h 25m
Southwest
Deal found 5/25![Southwest logo]()
$385
This Southwest deal was found by Cheapflights users on 5/29. Clicking the “Pick Dates” 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 7/28:45 am
SDF
- STL
1 stop4h 25m
Southwest
Sun 7/56:45 pm
STL
- SDF
1 stop4h 30m
Southwest
Deal found 5/29![Southwest logo]()
$395
This Southwest deal was found by Cheapflights users on 5/26. Clicking the “Pick Dates” 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 7/105:30 pm
SDF
- STL
1 stop7h 40m
Southwest
Fri 7/175:00 am
STL
- SDF
1 stop5h 25m
Southwest
Deal found 5/26![Southwest logo]()
$395
Last-minute flights from Louisville to IllinoisDiscover last-minute flight deals from Louisville to Illinois. Data last updated May 30, 2026 and is based on user searches.
Discover last-minute flight deals from Louisville to Illinois. Data last updated May 30, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 5/27. Clicking the “Pick Dates” 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 6/1710:02 am
SDF
- ORD
Nonstop1h 36m
United Airlines
Sun 6/214:29 pm
ORD
- SDF
Nonstop1h 31m
United Airlines
Deal found 5/27![United Airlines logo]()
$308
This Southwest deal was found by Cheapflights users on 5/27. Clicking the “Pick Dates” 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 6/177:45 pm
SDF
- MDW
Nonstop1h 15m
Southwest
Sun 6/218:00 am
MDW
- SDF
Nonstop1h 15m
Southwest
Deal found 5/27![Southwest logo]()
$308
This Southwest deal was found by Cheapflights users on 5/26. Clicking the “Pick Dates” 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 6/234:15 pm
SDF
- MDW
Nonstop1h 15m
Southwest
Tue 6/307:45 am
MDW
- SDF
Nonstop1h 20m
Southwest
Deal found 5/26![Southwest logo]()
$257
This United Airlines deal was found by Cheapflights users on 5/26. Clicking the “Pick Dates” 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 6/247:19 am
SDF
- ORD
Nonstop1h 41m
United Airlines
Mon 6/294:30 pm
ORD
- SDF
Nonstop1h 31m
United Airlines
Deal found 5/26![United Airlines logo]()
$286
This Southwest deal was found by Cheapflights users on 5/26. Clicking the “Pick Dates” 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 6/247:45 pm
SDF
- MDW
Nonstop1h 15m
Southwest
Mon 6/297:45 am
MDW
- SDF
Nonstop1h 20m
Southwest
Deal found 5/26![Southwest logo]()
$286
This American Airlines deal was found by Cheapflights users on 5/26. Clicking the “Pick Dates” 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 6/247:18 pm
SDF
- ORD
Nonstop1h 56m
American Airlines
Mon 6/294:49 pm
ORD
- SDF
1 stop4h 38m
American Airlines
Deal found 5/26![American Airlines logo]()
$296
This Delta deal was found by Cheapflights users on 5/29. Clicking the “Pick Dates” 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 6/2410:35 am
SDF
- ORD
1 stop6h 51m
Delta
Sun 6/287:01 am
ORD
- SDF
1 stop5h 38m
Delta
Deal found 5/29![Delta logo]()
$316
This Southwest deal was found by Cheapflights users on 5/28. Clicking the “Pick Dates” 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 6/2711:50 am
SDF
- MDW
Nonstop1h 10m
Southwest
Sun 6/282:40 pm
MDW
- SDF
Nonstop1h 10m
Southwest
Deal found 5/28![Southwest logo]()
$295
This United Airlines deal was found by Cheapflights users on 5/28. Clicking the “Pick Dates” 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 6/272:10 pm
SDF
- ORD
Nonstop1h 40m
United Airlines
Sun 6/289:25 pm
ORD
- SDF
Nonstop1h 34m
United Airlines
Deal found 5/28![United Airlines logo]()
$315
This American Airlines deal was found by Cheapflights users on 5/26. Clicking the “Pick Dates” 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.
Tue 6/307:18 pm
SDF
- ORD
Nonstop1h 56m
American Airlines
Wed 7/18:00 am
ORD
- SDF
Nonstop1h 35m
American Airlines
Deal found 5/26![American Airlines logo]()
$257
This Delta deal was found by Cheapflights users on 5/27. Clicking the “Pick Dates” 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 6/3010:35 am
SDF
- ORD
1 stop6h 51m
Delta
Wed 7/111:30 am
ORD
- SDF
1 stop4h 16m
Delta
Deal found 5/27![Delta logo]()
$277
This Delta deal was found by Cheapflights users on 5/27. Clicking the “Pick Dates” 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 6/307:49 am
SDF
- MDW
1 stop5h 57m
Delta
Wed 7/19:17 am
MDW
- SDF
1 stop3h 22m
Delta
Deal found 5/27![Delta logo]()
$277
One-way flights from Louisville to IllinoisSearch for one-way flight options from Louisville to Illinois. Find affordable one-way fares based on user searches. Data last updated May 30, 2026.
Search for one-way flight options from Louisville to Illinois. Find affordable one-way fares based on user searches. Data last updated May 30, 2026.
This Southwest deal was found by Cheapflights users on 5/29. Clicking the “Pick Dates” 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 8/251:15 pm
SDF
- MDW
Nonstop1h 15m
Southwest
Deal found 5/29![Southwest logo]()
$89
This Delta deal was found by Cheapflights users on 5/30. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/2510:34 am
SDF
- ORD
1 stop3h 39m
Delta
Deal found 5/30![Delta logo]()
$99
This Kiwi.com deal was found by Cheapflights users on 5/27. Clicking the “Pick Dates” 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 8/2410:39 am
SDF
- ORD
1 stop26h 46m
Multiple Airlines
Deal found 5/27![Multiple Airlines logo]()
$117
This Kiwi.com deal was found by Cheapflights users on 5/26. Clicking the “Pick Dates” 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 7/196:52 pm
SDF
- MDW
1 stop26h 38m
Allegiant Air
Deal found 5/26![Allegiant Air logo]()
$122
This Delta deal was found by Cheapflights users on 5/29. Clicking the “Pick Dates” 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 8/297:55 am
SDF
- ORD
1 stop6h 41m
Delta
Deal found 5/29![Delta logo]()
$125
This Kiwi.com deal was found by Cheapflights users on 5/26. Clicking the “Pick Dates” 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 7/236:50 pm
SDF
- MDW
1 stop26h 41m
Allegiant Air
Deal found 5/26![Allegiant Air logo]()
$127
This United Airlines deal was found by Cheapflights users on 5/27. Clicking the “Pick Dates” 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 7/17:15 am
SDF
- ORD
Nonstop1h 41m
United Airlines
Deal found 5/27![United Airlines logo]()
$129
This Kiwi.com deal was found by Cheapflights users on 5/27. Clicking the “Pick Dates” 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 7/208:48 pm
SDF
- ORD
1 stop16h 27m
Multiple Airlines
Deal found 5/27![Multiple Airlines logo]()
$130
This Southwest deal was found by Cheapflights users on 5/28. Clicking the “Pick Dates” 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 8/2411:50 am
SDF
- MDW
1 stop7h 25m
Southwest
Deal found 5/28![Southwest logo]()
$132
This Kiwi.com deal was found by Cheapflights users on 5/27. Clicking the “Pick Dates” 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 6/229:05 pm
SDF
- ORD
1 stop16h 19m
Multiple Airlines
Deal found 5/27![Multiple Airlines logo]()
$134
This Kiwi.com deal was found by Cheapflights users on 5/27. Clicking the “Pick Dates” 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 7/266:52 pm
SDF
- MDW
1 stop26h 38m
Allegiant Air
Deal found 5/27![Allegiant Air logo]()
$134
This Kiwi.com deal was found by Cheapflights users on 5/27. Clicking the “Pick Dates” 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 7/126:52 pm
SDF
- MDW
1 stop26h 38m
Allegiant Air
Deal found 5/27![Allegiant Air logo]()
$135
Find flight deals from Louisville to Illinois
Keep the following information in mind while searching for Louisville to Illinois flight deals. Data was last updated May 30, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $217 (Kiwi.com) |
One-way from | $89 (Southwest) |
Popular in | January |
Cheapest in | November |
Average price | $380 |
Good round-trip deal | $393 or less |
Good one-way deal | $203 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Louisville 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 May 30, 2026.
Use the filters below to find and compare flights from Louisville to Illinois that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
LouisvilleChicago
SDF - MDW
SDFMDW
Louisville Intl
Tue 6/30
7:49 am-12:46 pm
1 stop5h 57m
Chicago Midway
Wed 7/1
9:17 am-1:39 pm
1 stop3h 22m
$277
LouisvilleChicago
SDF - ORD
SDFORD
Louisville Intl
Mon 6/29
5:50 pm-6:40 pm
Nonstop1h 50m
Chicago O'Hare Intl
Tue 6/30
5:50 pm-8:23 pm
Nonstop1h 33m
$286
LouisvilleChicago
SDF - MDW
SDFMDW
Louisville Intl
Mon 8/3
3:35 pm-3:50 pm
Nonstop1h 15m
Chicago Midway
Wed 8/5
2:00 pm-8:35 pm
2 stops5h 35m
$301
LouisvilleChicago
SDF - MDW
SDFMDW
Louisville Intl
Tue 7/14
7:25 am-1:35 pm
2 stops7h 10m
Chicago Midway
Thu 7/16
12:45 pm-2:55 pm
Nonstop1h 10m
$301
LouisvilleChicago
SDF - ORD
SDFORD
Louisville Intl
Fri 8/7
7:55 pm-8:40 pm
Nonstop1h 45m
Chicago O'Hare Intl
Mon 8/31
5:59 pm-8:36 pm
Nonstop1h 37m
$303
Quickest round-trip
LouisvilleChicago
SDF - ORD
SDFORD
Louisville Intl
Mon 7/6
2:10 pm-2:50 pm
Nonstop1h 40m
Chicago O'Hare Intl
Thu 7/9
6:59 am-9:26 am
Nonstop1h 27m
$315
LouisvilleSt. Louis
SDF - STL
SDFSTL
Louisville Intl
Thu 10/15
8:10 pm-10:35 pm
1 stop3h 25m
Lambert-St Louis
Sat 10/17
12:05 pm-10:20 pm
2 stops9h 15m
$316
LouisvilleChicago
SDF - ORD
SDFORD
Louisville Intl
Thu 10/22
10:15 am-12:37 pm
1 stop3h 22m
Chicago O'Hare Intl
Sat 10/24
11:30 am-5:40 pm
1 stop5h 10m
$317
LouisvilleChicago
SDF - MDW
SDFMDW
Louisville Intl
Tue 7/14
7:25 am-1:35 pm
2 stops7h 10m
Chicago Midway
Fri 7/17
7:15 am-12:00 pm
1 stop3h 45m
$320
LouisvilleChicago
SDF - MDW
SDFMDW
Louisville Intl
Thu 7/23
3:35 pm-3:50 pm
Nonstop1h 15m
Chicago Midway
Thu 7/23
5:20 pm-12:30 am
1 stop6h 10m
$325
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Louisville to Illinois
Have a flexible travel schedule? Discover the best time to fly to Illinois from Louisville with our price prediction graph.
SDF-MDW
SDF-ORD
SDF-MLI
SDF-STL
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Louisville to Illinois
SDF-USIL
SDF-MDW
SDF-ORD
SDF-MLI
SDF-STL
What is the cheapest month to book a flight from Louisville to Illinois?
Currently, January is the cheapest month in which you can book a flight from Louisville to Illinois (average of $67). Flying from Louisville to Illinois in June is currently the most expensive (average of $246). 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 SDF to IL?
Find hourly flight availability from Louisville 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 May 30, 2026.
When flying from Louisville to Illinois, the time of day you fly usually plays a role in the price. Save by searching for a flight in the morning, which can drop the price by up to 31% versus a flight at noon.
Weekly flight availability from Louisville to Illinois
Explore weekly flight availability from Louisville 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 May 30, 2026.
The most flights from SDF to USIL are scheduled on a Saturday (44 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (5 on average).
How much does it cost to fly round-trip from Louisville to Illinois?
How far ahead should I book a flight from Louisville to Illinois?
The price you pay for your flight from Louisville to Illinois may vary depending on when you book. For the best chance of a lower fare, look to book 41 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
What is the cheapest day to fly from Louisville to Illinois?
Use this chart to determine the cheapest time to fly round-trip from Louisville to Illinois. Price data was last updated on May 30, 2026.
Travelers seeking maximum savings on their Louisville to Illinois flight should consider departing on Saturday afternoons when fares are most often at their lowest. Saturday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
Reviews of airlines servicing Illinois
Get insights into the airlines that provide service to Illinois. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Illinois. Reviews last updated May 30, 2026.
See what other customers who have flown with Southwest,United Airlines, andAmerican Airlines from Louisville to Illinois have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Food
7.0
Overall
8.0
Comfort
8.0
Boarding
8.1
Crew
8.6
Entertainment
7.5
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Food
7.0
Overall
8.0
Comfort
8.0
Boarding
8.1
Crew
8.6
Entertainment
7.5
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Food
7.0
Overall
8.0
Comfort
8.0
Boarding
8.1
Crew
8.6
Entertainment
7.5
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Food
7.0
Overall
8.0
Comfort
8.0
Boarding
8.1
Crew
8.6
Entertainment
7.5
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Related info for your journey
Find useful and relevant information for your journey from Louisville 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 Louisville 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 Louisville to Illinois by cabin class
Find flights from Louisville to Illinois, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Louisville and Illinois flights
Browse other Louisville and Illinois flight options. Last updated on May 30, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Louisville to Illinois flights
Consider these flights traveling from Louisville to Illinois.
Top 3 airlines flying from Louisville to Illinois
Discover the top 3 airlines that operate flights from Louisville 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 May 30, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$97 | Average$276 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$97 | Average$236 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$137 | Average$316 | FlexibilityNo cancel fee | On-time69% |