$100+ 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 8/24. Fares are subject to change and may not be available on all flights or dates of travel.
SDF — ORD
Jul 29 — Aug 51
Round-trip
1 adult, Economy
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Find cheap flights from Louisville 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
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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 Louisville to Illinois
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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 June 29, 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 June 29, 2026.
This United Airlines deal was found by Cheapflights users on 6/25. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/159:00 am
SDF
- ORD
Nonstop1h 41m
United Airlines
Wed 8/196:56 am
ORD
- SDF
Nonstop1h 42m
United Airlines
Deal found 6/25![United Airlines logo]()
$223
This Southwest deal was found by Cheapflights users on 6/25. 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.
Tue 8/46:45 pm
SDF
- MDW
Nonstop1h 15m
Southwest
Wed 8/51:00 pm
MDW
- SDF
Nonstop1h 15m
Southwest
Deal found 6/25![Southwest logo]()
$223
This United Airlines deal was found by Cheapflights users on 6/28. 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 8/87:55 pm
SDF
- ORD
Nonstop1h 45m
United Airlines
Mon 8/109:25 pm
ORD
- SDF
Nonstop1h 34m
United Airlines
Deal found 6/28![United Airlines logo]()
$224
This Southwest deal was found by Cheapflights users on 6/25. 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 8/84:55 pm
SDF
- MDW
Nonstop1h 20m
Southwest
Mon 8/108:00 am
MDW
- SDF
Nonstop1h 25m
Southwest
Deal found 6/25![Southwest logo]()
$224
This American Airlines deal was found by Cheapflights users on 6/28. 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 8/86:28 am
SDF
- ORD
Nonstop1h 47m
American Airlines
Mon 8/103:24 pm
ORD
- SDF
Nonstop1h 36m
American Airlines
Deal found 6/28![American Airlines logo]()
$225
This Southwest deal was found by Cheapflights users on 6/28. 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 8/109:00 am
SDF
- MDW
Nonstop1h 15m
Southwest
Mon 8/176:10 pm
MDW
- SDF
Nonstop1h 15m
Southwest
Deal found 6/28![Southwest logo]()
$225
This Delta deal was found by Cheapflights users on 6/25. 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.
Tue 7/215:28 pm
SDF
- ORD
1 stop4h 03m
Delta
Wed 7/298:52 am
ORD
- SDF
1 stop3h 50m
Delta
Deal found 6/25![Delta logo]()
$243
This Southwest deal was found by Cheapflights users on 6/25. 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 7/185:15 pm
SDF
- MDW
1 stop6h 15m
Southwest
Wed 7/229:30 am
MDW
- SDF
1 stop6h 40m
Southwest
Deal found 6/25![Southwest logo]()
$243
This Delta deal was found by Cheapflights users on 6/28. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/810:34 am
SDF
- ORD
1 stop6h 43m
Delta
Mon 8/108:48 am
ORD
- SDF
1 stop4h 03m
Delta
Deal found 6/28![Delta logo]()
$244
This Delta deal was found by Cheapflights users on 6/27. 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.
Sat 8/87:55 am
SDF
- MDW
1 stop5h 44m
Delta
Mon 8/109:24 am
MDW
- SDF
1 stop3h 27m
Delta
Deal found 6/27![Delta logo]()
$244
This Delta deal was found by Cheapflights users on 6/28. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/105:25 pm
SDF
- ORD
1 stop4h 05m
Delta
Mon 8/178:48 am
ORD
- SDF
1 stop4h 03m
Delta
Deal found 6/28![Delta logo]()
$245
This United Airlines deal was found by Cheapflights users on 6/25. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/279:00 am
SDF
- ORD
Nonstop1h 41m
United Airlines
Mon 8/319:25 pm
ORD
- SDF
Nonstop1h 34m
United Airlines
Deal found 6/25![United Airlines logo]()
$247
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 June 29, 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 June 29, 2026.
This Southwest deal was found by Cheapflights users on 6/25. 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.
Tue 7/284:15 pm
SDF
- MDW
Nonstop1h 15m
Southwest
Wed 7/297:45 am
MDW
- SDF
Nonstop1h 20m
Southwest
Deal found 6/25![Southwest logo]()
$223
This United Airlines deal was found by Cheapflights users on 6/28. 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 8/87:55 pm
SDF
- ORD
Nonstop1h 45m
United Airlines
Mon 8/109:25 pm
ORD
- SDF
Nonstop1h 34m
United Airlines
Deal found 6/28![United Airlines logo]()
$224
This Delta deal was found by Cheapflights users on 6/27. 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.
Sat 8/87:55 am
SDF
- ORD
1 stop6h 55m
Delta
Mon 8/101:59 pm
ORD
- SDF
1 stop6h 20m
Delta
Deal found 6/27![Delta logo]()
$255
This Southwest deal was found by Cheapflights users on 6/28. 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 8/89:00 am
SDF
- MDW
Nonstop1h 15m
Southwest
Mon 8/106:10 pm
MDW
- SDF
Nonstop1h 15m
Southwest
Deal found 6/28![Southwest logo]()
$224
This Southwest deal was found by Cheapflights users on 6/27. 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 8/277:10 pm
SDF
- MDW
Nonstop1h 15m
Southwest
Mon 8/318:00 am
MDW
- SDF
Nonstop1h 25m
Southwest
Deal found 6/27![Southwest logo]()
$225
This Delta deal was found by Cheapflights users on 6/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/106:00 am
SDF
- MLI
1 stop5h 23m
Delta
Sun 9/136:00 am
MLI
- SDF
1 stop5h 20m
Delta
Deal found 6/24![Delta logo]()
$289
This United Airlines deal was found by Cheapflights users on 6/25. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/155:45 pm
SDF
- ORD
Nonstop1h 51m
United Airlines
Wed 8/198:45 am
ORD
- SDF
1 stop4h 52m
United Airlines
Deal found 6/25![United Airlines logo]()
$318
This Delta deal was found by Cheapflights users on 6/28. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/202:34 pm
SDF
- ORD
1 stop4h 55m
Delta
Sun 8/236:59 am
ORD
- SDF
1 stop5h 52m
Delta
Deal found 6/28![Delta logo]()
$290
This Southwest deal was found by Cheapflights users on 6/27. 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 7/255:15 pm
SDF
- MDW
1 stop6h 15m
Southwest
Sat 8/12:35 pm
MDW
- SDF
2 stops6h 10m
Southwest
Deal found 6/27![Southwest logo]()
$294
This United Airlines deal was found by Cheapflights users on 6/28. 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.
Tue 10/209:04 am
SDF
- STL
1 stop4h 09m
United Airlines
Wed 10/211:29 pm
STL
- SDF
1 stop6h 02m
United Airlines
Deal found 6/28![United Airlines logo]()
$331
This United Airlines deal was found by Cheapflights users on 6/25. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/1510:04 am
SDF
- ORD
Nonstop1h 36m
United Airlines
Sat 7/186:59 am
ORD
- SDF
Nonstop1h 27m
United Airlines
Deal found 6/25![United Airlines logo]()
$333
This Delta deal was found by Cheapflights users on 6/25. 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 7/232:22 pm
SDF
- ORD
1 stop5h 07m
Delta
Sun 7/267:05 am
ORD
- SDF
1 stop5h 37m
Delta
Deal found 6/25![Delta logo]()
$357
This Southwest deal was found by Cheapflights users on 6/24. Clicking the “Pick Dates” 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 7/246:05 pm
SDF
- MDW
1 stop4h 55m
Southwest
Sun 7/268:00 am
MDW
- SDF
Nonstop1h 15m
Southwest
Deal found 6/24![Southwest logo]()
$325
This United Airlines deal was found by Cheapflights users on 6/24. Clicking the “Pick Dates” 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 7/299:00 am
SDF
- ORD
Nonstop1h 38m
United Airlines
Fri 7/311:30 pm
ORD
- SDF
1 stop4h 48m
United Airlines
Deal found 6/24![United Airlines logo]()
$337
This Southwest deal was found by Cheapflights users on 6/26. 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 8/217:10 pm
SDF
- MDW
Nonstop1h 15m
Southwest
Sun 8/237:35 am
MDW
- SDF
1 stop5h 35m
Southwest
Deal found 6/26![Southwest logo]()
$325
This Delta deal was found by Cheapflights users on 6/25. 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.
Wed 9/27:55 am
SDF
- ORD
1 stop6h 13m
Delta
Mon 9/71:59 pm
ORD
- SDF
1 stop6h 20m
Delta
Deal found 6/25![Delta logo]()
$371
This United Airlines deal was found by Cheapflights users on 6/24. Clicking the “Pick Dates” 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 8/265:15 am
SDF
- MLI
1 stop5h 39m
United Airlines
Sat 8/298:13 am
MLI
- SDF
1 stop3h 58m
United Airlines
Deal found 6/24![United Airlines logo]()
$359
This Southwest deal was found by Cheapflights users on 6/24. Clicking the “Pick Dates” 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 7/812:40 pm
SDF
- MDW
1 stop8h 35m
Southwest
Wed 7/157:45 am
MDW
- SDF
Nonstop1h 20m
Southwest
Deal found 6/24![Southwest logo]()
$343
This United Airlines deal was found by Cheapflights users on 6/28. 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 11/1110:25 am
SDF
- MLI
1 stop4h 33m
United Airlines
Sat 11/142:35 pm
MLI
- SDF
1 stop5h 06m
United Airlines
Deal found 6/28![United Airlines logo]()
$359
This Delta deal was found by Cheapflights users on 6/26. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/216:00 am
SDF
- ORD
2 stops8h 08m
Delta
Mon 8/248:48 am
ORD
- SDF
1 stop4h 03m
Delta
Deal found 6/26![Delta logo]()
$405
This United Airlines deal was found by Cheapflights users on 6/28. 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 8/151:50 pm
SDF
- ORD
Nonstop1h 40m
United Airlines
Sat 8/155:30 pm
ORD
- SDF
2 stops15h 48m
United Airlines
Deal found 6/28![United Airlines logo]()
$374
This Southwest deal was found by Cheapflights users on 6/24. Clicking the “Pick Dates” 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 10/234:35 pm
SDF
- STL
2 stops9h 00m
Southwest
Mon 10/263:50 pm
STL
- SDF
1 stop5h 30m
Southwest
Deal found 6/24![Southwest logo]()
$375
This Southwest deal was found by Cheapflights users on 6/24. Clicking the “Pick Dates” 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 9/134:05 pm
SDF
- STL
2 stops6h 30m
Southwest
Thu 9/172:25 pm
STL
- SDF
1 stop6h 30m
Southwest
Deal found 6/24![Southwest logo]()
$375
This Delta deal was found by Cheapflights users on 6/25. 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.
Mon 7/135:28 pm
SDF
- STL
1 stop4h 09m
Delta
Fri 7/176:30 am
STL
- SDF
1 stop6h 12m
Delta
Deal found 6/25![Delta logo]()
$467
This United Airlines deal was found by Cheapflights users on 6/25. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/109:00 am
SDF
- MLI
1 stop5h 56m
United Airlines
Tue 7/1410:40 am
MLI
- SDF
1 stop5h 23m
United Airlines
Deal found 6/25![United Airlines logo]()
$389
This United Airlines deal was found by Cheapflights users on 6/26. 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.
Mon 8/1010:05 am
SDF
- ORD
1 stop5h 24m
United Airlines
Thu 8/132:00 pm
ORD
- SDF
Nonstop1h 38m
United Airlines
Deal found 6/26![United Airlines logo]()
$412
This Southwest deal was found by Cheapflights users on 6/25. 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.
Mon 7/133:35 pm
SDF
- STL
1 stop4h 35m
Southwest
Fri 7/174:25 pm
STL
- SDF
2 stops7h 05m
Southwest
Deal found 6/25![Southwest logo]()
$472
Last-minute flights from Louisville to IllinoisDiscover last-minute flight deals from Louisville to Illinois. Data last updated June 29, 2026 and is based on user searches.
Discover last-minute flight deals from Louisville to Illinois. Data last updated June 29, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” 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
- ORD
1 stop4h 01m
Delta
Wed 7/11:40 pm
ORD
- SDF
1 stop6h 35m
Delta
Deal found 6/23![Delta logo]()
$295
This American Airlines deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” 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 7/1410:33 am
SDF
- ORD
Nonstop1h 39m
American Airlines
Sat 7/183:46 pm
ORD
- SDF
Nonstop1h 36m
American Airlines
Deal found 6/23![American Airlines logo]()
$223
This Delta deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” 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 7/142:22 pm
SDF
- ORD
1 stop5h 07m
Delta
Sat 7/182:31 pm
ORD
- SDF
1 stop5h 41m
Delta
Deal found 6/23![Delta logo]()
$271
This Southwest deal was found by Cheapflights users on 6/25. 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.
Thu 7/168:05 pm
SDF
- MDW
Nonstop1h 15m
Southwest
Sat 7/187:40 am
MDW
- SDF
Nonstop1h 20m
Southwest
Deal found 6/25![Southwest logo]()
$291
This Southwest deal was found by Cheapflights users on 6/25. 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 7/187:15 pm
SDF
- MDW
Nonstop1h 15m
Southwest
Wed 7/221:25 pm
MDW
- SDF
Nonstop1h 10m
Southwest
Deal found 6/25![Southwest logo]()
$223
This United Airlines deal was found by Cheapflights users on 6/25. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/197:15 am
SDF
- ORD
Nonstop1h 41m
United Airlines
Wed 7/294:25 pm
ORD
- SDF
Nonstop1h 31m
United Airlines
Deal found 6/25![United Airlines logo]()
$291
This Delta deal was found by Cheapflights users on 6/25. 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.
Tue 7/215:28 pm
SDF
- ORD
1 stop4h 03m
Delta
Wed 7/298:52 am
ORD
- SDF
1 stop3h 50m
Delta
Deal found 6/25![Delta logo]()
$243
This Delta deal was found by Cheapflights users on 6/25. 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.
Tue 7/215:28 pm
SDF
- ORD
1 stop4h 03m
Delta
Fri 7/317:05 am
ORD
- SDF
1 stop5h 37m
Delta
Deal found 6/25![Delta logo]()
$289
This United Airlines deal was found by Cheapflights users on 6/25. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/215:50 pm
SDF
- ORD
Nonstop1h 50m
United Airlines
Tue 7/289:25 pm
ORD
- SDF
Nonstop1h 34m
United Airlines
Deal found 6/25![United Airlines logo]()
$293
This Southwest deal was found by Cheapflights users on 6/24. Clicking the “Pick Dates” 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 7/227:25 am
SDF
- MDW
2 stops8h 45m
Southwest
Wed 7/297:45 am
MDW
- SDF
Nonstop1h 20m
Southwest
Deal found 6/24![Southwest logo]()
$238
This Southwest deal was found by Cheapflights users on 6/27. 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 7/255:15 pm
SDF
- MDW
1 stop6h 15m
Southwest
Sat 8/12:35 pm
MDW
- SDF
2 stops6h 10m
Southwest
Deal found 6/27![Southwest logo]()
$294
This United Airlines deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” 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 7/297:15 am
SDF
- ORD
Nonstop1h 41m
United Airlines
Thu 7/302:29 pm
ORD
- SDF
Nonstop1h 34m
United Airlines
Deal found 6/23![United Airlines logo]()
$269
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 June 29, 2026.
Search for one-way flight options from Louisville to Illinois. Find affordable one-way fares based on user searches. Data last updated June 29, 2026.
This Kiwi.com deal was found by Cheapflights users on 6/28. 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 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 stop27h 11m
Multiple Airlines
Deal found 6/28![Multiple Airlines logo]()
$100
This United Airlines deal was found by Cheapflights users on 6/26. 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 9/1611:00 am
SDF
- ORD
Nonstop1h 42m
United Airlines
Deal found 6/26![United Airlines logo]()
$112
This Southwest deal was found by Cheapflights users on 6/24. Clicking the “Pick Dates” 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 7/157:45 pm
SDF
- MDW
Nonstop1h 15m
Southwest
Deal found 6/24![Southwest logo]()
$112
This United Airlines deal was found by Cheapflights users on 6/27. 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.
Thu 8/137:10 am
SDF
- ORD
Nonstop1h 40m
United Airlines
Deal found 6/27![United Airlines logo]()
$113
This Southwest deal was found by Cheapflights users on 6/27. 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 8/137:10 pm
SDF
- MDW
Nonstop1h 15m
Southwest
Deal found 6/27![Southwest logo]()
$113
This Delta deal was found by Cheapflights users on 6/26. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/255:27 pm
SDF
- ORD
1 stop4h 04m
Delta
Deal found 6/26![Delta logo]()
$122
This Delta deal was found by Cheapflights users on 6/25. 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.
Tue 8/257:55 am
SDF
- MDW
1 stop5h 44m
Delta
Deal found 6/25![Delta logo]()
$122
This Delta deal was found by Cheapflights users on 6/28. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/277:55 am
SDF
- ORD
1 stop6h 13m
Delta
Deal found 6/28![Delta logo]()
$123
This Delta deal was found by Cheapflights users on 6/28. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/242:34 pm
SDF
- MDW
1 stop4h 59m
Delta
Deal found 6/28![Delta logo]()
$123
This American Airlines deal was found by Cheapflights users on 6/24. Clicking the “Pick Dates” 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 8/66:28 am
SDF
- ORD
Nonstop1h 47m
American Airlines
Deal found 6/24![American Airlines logo]()
$124
This Southwest deal was found by Cheapflights users on 6/26. 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.
Thu 9/172:15 pm
SDF
- MDW
Nonstop1h 15m
Southwest
Deal found 6/26![Southwest logo]()
$124
This Southwest deal was found by Cheapflights users on 6/24. Clicking the “Pick Dates” 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 7/227:25 am
SDF
- MDW
2 stops8h 45m
Southwest
Deal found 6/24![Southwest logo]()
$127
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 June 29, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $223 (United Airlines) |
One-way from | $100 (Kiwi.com) |
Popular in | January |
Cheapest in | November |
Average price | $356 |
Good round-trip deal | $343 or less |
Good one-way deal | $209 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 June 29, 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 7/28
4:15 pm-4:30 pm
Nonstop1h 15m
Chicago Midway
Wed 7/29
7:45 am-10:05 am
Nonstop1h 20m
$223
LouisvilleChicago
SDF - ORD
SDFORD
Louisville Intl
Sat 8/8
7:55 pm-8:40 pm
Nonstop1h 45m
Chicago O'Hare Intl
Mon 8/10
9:25 pm-11:59 pm
Nonstop1h 34m
$224
Quickest round-trip
LouisvilleChicago
SDF - MDW
SDFMDW
Louisville Intl
Sat 8/8
9:00 am-9:15 am
Nonstop1h 15m
Chicago Midway
Mon 8/10
6:10 pm-8:25 pm
Nonstop1h 15m
$224
LouisvilleChicago
SDF - MDW
SDFMDW
Louisville Intl
Thu 8/27
7:10 pm-7:25 pm
Nonstop1h 15m
Chicago Midway
Mon 8/31
8:00 am-10:25 am
Nonstop1h 25m
$225
LouisvilleChicago
SDF - ORD
SDFORD
Louisville Intl
Sat 8/8
7:55 am-1:50 pm
1 stop6h 55m
Chicago O'Hare Intl
Mon 8/10
1:59 pm-9:19 pm
1 stop6h 20m
$255
LouisvilleMoline
SDF - MLI
SDFMLI
Louisville Intl
Thu 9/10
6:00 am-10:23 am
1 stop5h 23m
Moline Quad-City
Sun 9/13
6:00 am-12:20 pm
1 stop5h 20m
$289
LouisvilleChicago
SDF - ORD
SDFORD
Louisville Intl
Thu 8/20
2:34 pm-6:29 pm
1 stop4h 55m
Chicago O'Hare Intl
Sun 8/23
6:59 am-1:51 pm
1 stop5h 52m
$290
LouisvilleChicago
SDF - MDW
SDFMDW
Louisville Intl
Sat 7/25
5:15 pm-10:30 pm
1 stop6h 15m
Chicago Midway
Sat 8/1
2:35 pm-9:45 pm
2 stops6h 10m
$294
LouisvilleChicago
SDF - ORD
SDFORD
Louisville Intl
Sat 8/15
5:45 pm-6:36 pm
Nonstop1h 51m
Chicago O'Hare Intl
Wed 8/19
8:45 am-2:37 pm
1 stop4h 52m
$318
LouisvilleChicago
SDF - MDW
SDFMDW
Louisville Intl
Fri 7/24
6:05 pm-10:00 pm
1 stop4h 55m
Chicago Midway
Sun 7/26
8:00 am-10:15 am
Nonstop1h 15m
$325
Showing 1-10 of 54 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 June 29, 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 32% 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 June 29, 2026.
The most flights from SDF to USIL are scheduled on a Tuesday (38 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (9 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 June 27, 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 June 29, 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.
Overall
7.9
Comfort
8.0
Entertainment
7.5
Crew
8.6
Food
7.0
Boarding
8.1
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Overall
7.9
Comfort
8.0
Entertainment
7.5
Crew
8.6
Food
7.0
Boarding
8.1
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Overall
7.9
Comfort
8.0
Entertainment
7.5
Crew
8.6
Food
7.0
Boarding
8.1
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Overall
7.9
Comfort
8.0
Entertainment
7.5
Crew
8.6
Food
7.0
Boarding
8.1
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
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
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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 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 June 29, 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 June 29, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$97 | Average$291 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$97 | Average$253 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$137 | Average$330 | FlexibilityNo cancel fee | On-time69% |