$96+ 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 8/17. Fares are subject to change and may not be available on all flights or dates of travel.
SDF ā ORD
aoĆ»t 21 ā aoĆ»t 281
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
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 āFind dealsā2. 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 providerās pricing and select the best option for you! Book through your favorite providerās website for a seamless experience.Cheap flight deals from Louisville to Illinois
Cheapest
Best
Last-minute
One-way
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 juillet 22, 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 juillet 22, 2026.
This United Airlines deal was found by Cheapflights users on 7/21. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure United Airlines is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
sam. 8/157:10 am
SDF
- ORD
Nonstop1h 40m
United Airlines
mar. 8/252:00 pm
ORD
- SDF
Nonstop1h 38m
United Airlines
Deal found 7/21![United Airlines logo]()
$217
This Southwest deal was found by Cheapflights users on 7/21. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Southwest is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
jeu. 8/137:10 pm
SDF
- MDW
Nonstop1h 15m
Southwest
jeu. 8/276:10 pm
MDW
- SDF
Nonstop1h 15m
Southwest
Deal found 7/21![Southwest logo]()
$217
This American Airlines deal was found by Cheapflights users on 7/21. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure American Airlines is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
ven. 8/146:28 am
SDF
- ORD
Nonstop1h 47m
American Airlines
sam. 8/157:15 am
ORD
- SDF
Nonstop1h 30m
American Airlines
Deal found 7/21![American Airlines logo]()
$222
This Southwest deal was found by Cheapflights users on 7/21. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Southwest is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
jeu. 8/137:10 pm
SDF
- MDW
Nonstop1h 15m
Southwest
ven. 8/148:00 am
MDW
- SDF
Nonstop1h 25m
Southwest
Deal found 7/21![Southwest logo]()
$222
This American Airlines deal was found by Cheapflights users on 7/21. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure American Airlines is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
ven. 8/216:28 am
SDF
- ORD
Nonstop1h 47m
American Airlines
dim. 8/233:24 pm
ORD
- SDF
Nonstop1h 36m
American Airlines
Deal found 7/21![American Airlines logo]()
$227
This Southwest deal was found by Cheapflights users on 7/21. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Southwest is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
jeu. 8/137:10 pm
SDF
- MDW
Nonstop1h 15m
Southwest
lun. 8/175:55 am
MDW
- SDF
1 stop6h 10m
Southwest
Deal found 7/21![Southwest logo]()
$227
This American Airlines deal was found by Cheapflights users on 7/18. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure American Airlines is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
mer. 9/26:30 pm
SDF
- ORD
Nonstop1h 54m
American Airlines
dim. 9/68:05 am
ORD
- SDF
Nonstop1h 30m
American Airlines
Deal found 7/18![American Airlines logo]()
$232
This Southwest deal was found by Cheapflights users on 7/21. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Southwest is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
mer. 8/127:05 am
SDF
- MDW
1 stop4h 45m
Southwest
jeu. 8/135:55 am
MDW
- SDF
1 stop6h 10m
Southwest
Deal found 7/21![Southwest logo]()
$237
This Southwest deal was found by Cheapflights users on 7/20. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Southwest is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
lun. 8/106:45 am
SDF
- MDW
2 stops9h 40m
Southwest
jeu. 8/138:00 am
MDW
- SDF
Nonstop1h 25m
Southwest
Deal found 7/20![Southwest logo]()
$238
This Delta deal was found by Cheapflights users on 7/22. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Delta is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
sam. 8/155:21 pm
SDF
- ORD
1 stop4h 09m
Delta
dim. 8/166:59 am
ORD
- SDF
1 stop5h 52m
Delta
Deal found 7/22![Delta logo]()
$247
This Delta deal was found by Cheapflights users on 7/22. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Delta is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
sam. 8/157:55 am
SDF
- MDW
1 stop5h 44m
Delta
dim. 8/169:24 am
MDW
- SDF
1 stop3h 27m
Delta
Deal found 7/22![Delta logo]()
$247
This American Airlines deal was found by Cheapflights users on 7/21. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure American Airlines is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
jeu. 8/136:28 am
SDF
- ORD
Nonstop1h 47m
American Airlines
lun. 8/178:05 am
ORD
- SDF
Nonstop1h 30m
American Airlines
Deal found 7/21![American Airlines logo]()
$248
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 juillet 22, 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 juillet 22, 2026.
This Southwest deal was found by Cheapflights users on 7/21. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Southwest is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
lun. 11/97:55 pm
SDF
- MDW
Nonstop1h 15m
Southwest
jeu. 11/127:50 am
MDW
- SDF
2 stops8h 10m
Southwest
Deal found 7/21![Southwest logo]()
$232
This Delta deal was found by Cheapflights users on 7/21. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Delta is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
ven. 8/215:25 pm
SDF
- ORD
1 stop4h 05m
Delta
dim. 8/236:59 am
ORD
- SDF
1 stop5h 52m
Delta
Deal found 7/21![Delta logo]()
$247
This United Airlines deal was found by Cheapflights users on 7/17. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure United Airlines is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
jeu. 9/1011:00 am
SDF
- ORD
Nonstop1h 42m
United Airlines
lun. 9/149:20 pm
ORD
- SDF
Nonstop1h 36m
United Airlines
Deal found 7/17![United Airlines logo]()
$247
This Southwest deal was found by Cheapflights users on 7/21. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Southwest is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
jeu. 9/37:10 pm
SDF
- MDW
Nonstop1h 15m
Southwest
ven. 9/45:25 pm
MDW
- SDF
1 stop4h 10m
Southwest
Deal found 7/21![Southwest logo]()
$237
This American Airlines deal was found by Cheapflights users on 7/21. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure American Airlines is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
ven. 8/218:16 am
SDF
- MLI
2 stops10h 55m
American Airlines
ven. 8/2811:43 am
MLI
- SDF
1 stop5h 17m
American Airlines
Deal found 7/21![American Airlines logo]()
$495
This Southwest deal was found by Cheapflights users on 7/20. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Southwest is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
sam. 8/159:00 am
SDF
- MDW
Nonstop1h 15m
Southwest
mar. 8/181:00 pm
MDW
- SDF
Nonstop1h 15m
Southwest
Deal found 7/20![Southwest logo]()
$247
This United Airlines deal was found by Cheapflights users on 7/19. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure United Airlines is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
lun. 8/105:50 pm
SDF
- STL
1 stop6h 39m
United Airlines
jeu. 8/135:30 pm
STL
- SDF
1 stop5h 29m
United Airlines
Deal found 7/19![United Airlines logo]()
$289
This Delta deal was found by Cheapflights users on 7/21. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Delta is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
dim. 9/610:34 am
SDF
- ORD
1 stop6h 43m
Delta
dim. 9/208:55 am
ORD
- SDF
1 stop4h 12m
Delta
Deal found 7/21![Delta logo]()
$296
This Southwest deal was found by Cheapflights users on 7/20. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Southwest is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
jeu. 8/277:10 pm
SDF
- MDW
Nonstop1h 15m
Southwest
lun. 8/318:00 am
MDW
- SDF
Nonstop1h 25m
Southwest
Deal found 7/20![Southwest logo]()
$247
This Southwest deal was found by Cheapflights users on 7/17. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Southwest is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
sam. 8/223:50 pm
SDF
- MDW
1 stop5h 40m
Southwest
sam. 8/293:15 pm
MDW
- SDF
Nonstop1h 10m
Southwest
Deal found 7/17![Southwest logo]()
$257
This Delta deal was found by Cheapflights users on 7/19. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Delta is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
jeu. 10/17:55 am
SDF
- ORD
1 stop6h 04m
Delta
mar. 10/62:00 pm
ORD
- SDF
1 stop6h 14m
Delta
Deal found 7/19![Delta logo]()
$323
This United Airlines deal was found by Cheapflights users on 7/17. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure United Airlines is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
mer. 8/191:56 pm
SDF
- ORD
1 stop5h 41m
United Airlines
lun. 8/249:25 pm
ORD
- SDF
Nonstop1h 34m
United Airlines
Deal found 7/17![United Airlines logo]()
$330
This Southwest deal was found by Cheapflights users on 7/19. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Southwest is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
mer. 12/308:15 pm
SDF
- MDW
Nonstop1h 25m
Southwest
jeu. 1/75:35 pm
MDW
- SDF
Nonstop1h 15m
Southwest
Deal found 7/19![Southwest logo]()
$261
This United Airlines deal was found by Cheapflights users on 7/21. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure United Airlines is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
ven. 8/215:45 pm
SDF
- ORD
Nonstop1h 51m
United Airlines
mar. 8/258:45 am
ORD
- SDF
1 stop4h 52m
United Airlines
Deal found 7/21![United Airlines logo]()
$330
This Delta deal was found by Cheapflights users on 7/20. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Delta is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
jeu. 8/202:34 pm
SDF
- ORD
1 stop4h 55m
Delta
dim. 8/238:48 am
ORD
- SDF
1 stop4h 03m
Delta
Deal found 7/20![Delta logo]()
$335
This Southwest deal was found by Cheapflights users on 7/21. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Southwest is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
jeu. 10/227:50 pm
SDF
- MDW
Nonstop1h 15m
Southwest
dim. 10/257:00 pm
MDW
- SDF
Nonstop1h 10m
Southwest
Deal found 7/21![Southwest logo]()
$271
This United Airlines deal was found by Cheapflights users on 7/21. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure United Airlines is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
mar. 10/69:04 am
SDF
- STL
1 stop6h 13m
United Airlines
mer. 10/711:35 am
STL
- SDF
1 stop6h 36m
United Airlines
Deal found 7/21![United Airlines logo]()
$331
This Delta deal was found by Cheapflights users on 7/19. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Delta is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
ven. 10/167:55 am
SDF
- ORD
1 stop6h 06m
Delta
dim. 10/1811:19 am
ORD
- SDF
1 stop4h 58m
Delta
Deal found 7/19![Delta logo]()
$357
This Southwest deal was found by Cheapflights users on 7/17. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Southwest is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
ven. 10/167:50 pm
SDF
- MDW
Nonstop1h 15m
Southwest
lun. 10/196:55 pm
MDW
- SDF
Nonstop1h 10m
Southwest
Deal found 7/17![Southwest logo]()
$281
This United Airlines deal was found by Cheapflights users on 7/21. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure United Airlines is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
jeu. 10/226:00 am
SDF
- ORD
1 stop4h 38m
United Airlines
dim. 10/257:05 am
ORD
- SDF
Nonstop1h 38m
United Airlines
Deal found 7/21![United Airlines logo]()
$342
This American Airlines deal was found by Cheapflights users on 7/21. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure American Airlines is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
lun. 8/35:04 am
SDF
- MLI
2 stops7h 19m
American Airlines
ven. 8/1411:43 am
MLI
- SDF
1 stop5h 17m
American Airlines
Deal found 7/21![American Airlines logo]()
$530
This Southwest deal was found by Cheapflights users on 7/18. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Southwest is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
jeu. 8/136:45 am
SDF
- STL
1 stop4h 25m
Southwest
jeu. 8/202:20 pm
STL
- SDF
1 stop5h 05m
Southwest
Deal found 7/18![Southwest logo]()
$289
This United Airlines deal was found by Cheapflights users on 7/17. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure United Airlines is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
ven. 8/75:50 pm
SDF
- STL
1 stop4h 36m
United Airlines
jeu. 8/1312:59 pm
STL
- SDF
1 stop6h 37m
United Airlines
Deal found 7/17![United Airlines logo]()
$352
This Southwest deal was found by Cheapflights users on 7/18. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Southwest is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
jeu. 8/206:45 am
SDF
- STL
1 stop4h 25m
Southwest
lun. 8/242:25 pm
STL
- SDF
1 stop6h 30m
Southwest
Deal found 7/18![Southwest logo]()
$289
This United Airlines deal was found by Cheapflights users on 7/17. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure United Airlines is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
dim. 10/256:12 pm
SDF
- ORD
Nonstop1h 50m
United Airlines
mer. 10/288:45 am
ORD
- SDF
1 stop5h 01m
United Airlines
Deal found 7/17![United Airlines logo]()
$376
This Southwest deal was found by Cheapflights users on 7/19. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Southwest is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
mar. 10/68:35 am
SDF
- STL
2 stops7h 25m
Southwest
mar. 10/64:05 pm
STL
- SDF
1 stop3h 05m
Southwest
Deal found 7/19![Southwest logo]()
$294
This Southwest deal was found by Cheapflights users on 7/19. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Southwest is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
lun. 10/56:15 pm
SDF
- STL
2 stops6h 00m
Southwest
mar. 10/62:25 pm
STL
- SDF
2 stops7h 35m
Southwest
Deal found 7/19![Southwest logo]()
$299
This Southwest deal was found by Cheapflights users on 7/19. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Southwest is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
lun. 10/58:20 am
SDF
- STL
1 stop4h 55m
Southwest
lun. 10/54:30 pm
STL
- SDF
2 stops6h 40m
Southwest
Deal found 7/19![Southwest logo]()
$319
This Southwest deal was found by Cheapflights users on 7/18. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Southwest is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
ven. 9/187:55 am
SDF
- STL
1 stop4h 55m
Southwest
lun. 9/216:05 am
STL
- SDF
1 stop3h 20m
Southwest
Deal found 7/18![Southwest logo]()
$342
This United Airlines deal was found by Cheapflights users on 7/21. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure United Airlines is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
lun. 8/37:15 am
SDF
- MLI
1 stop3h 49m
United Airlines
ven. 8/143:44 pm
MLI
- SDF
1 stop3h 52m
United Airlines
Deal found 7/21![United Airlines logo]()
$604
Last-minute flights from Louisville to IllinoisDiscover last-minute flight deals from Louisville to Illinois. Data last updated juillet 22, 2026 and is based on user searches.
Discover last-minute flight deals from Louisville to Illinois. Data last updated juillet 22, 2026 and is based on user searches.
This Southwest deal was found by Cheapflights users on 7/20. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Southwest is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
lun. 8/106:45 am
SDF
- MDW
2 stops9h 40m
Southwest
jeu. 8/138:00 am
MDW
- SDF
Nonstop1h 25m
Southwest
Deal found 7/20![Southwest logo]()
$238
This Southwest deal was found by Cheapflights users on 7/21. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Southwest is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
mer. 8/127:05 am
SDF
- MDW
1 stop4h 45m
Southwest
jeu. 8/135:55 am
MDW
- SDF
1 stop6h 10m
Southwest
Deal found 7/21![Southwest logo]()
$237
This Southwest deal was found by Cheapflights users on 7/21. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Southwest is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
jeu. 8/137:10 pm
SDF
- MDW
Nonstop1h 15m
Southwest
lun. 8/178:00 am
MDW
- SDF
Nonstop1h 25m
Southwest
Deal found 7/21![Southwest logo]()
$217
This Southwest deal was found by Cheapflights users on 7/21. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Southwest is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
jeu. 8/137:10 pm
SDF
- MDW
Nonstop1h 15m
Southwest
ven. 8/148:00 am
MDW
- SDF
Nonstop1h 25m
Southwest
Deal found 7/21![Southwest logo]()
$222
This Southwest deal was found by Cheapflights users on 7/21. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Southwest is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
jeu. 8/136:45 am
SDF
- MDW
2 stops9h 45m
Southwest
jeu. 8/276:10 pm
MDW
- SDF
Nonstop1h 15m
Southwest
Deal found 7/21![Southwest logo]()
$232
This American Airlines deal was found by Cheapflights users on 7/21. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure American Airlines is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
jeu. 8/136:28 am
SDF
- ORD
Nonstop1h 47m
American Airlines
lun. 8/178:05 am
ORD
- SDF
Nonstop1h 30m
American Airlines
Deal found 7/21![American Airlines logo]()
$248
This American Airlines deal was found by Cheapflights users on 7/21. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure American Airlines is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
ven. 8/146:28 am
SDF
- ORD
Nonstop1h 47m
American Airlines
sam. 8/157:15 am
ORD
- SDF
Nonstop1h 30m
American Airlines
Deal found 7/21![American Airlines logo]()
$222
This United Airlines deal was found by Cheapflights users on 7/21. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure United Airlines is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
sam. 8/157:10 am
SDF
- ORD
Nonstop1h 40m
United Airlines
mar. 8/252:00 pm
ORD
- SDF
Nonstop1h 38m
United Airlines
Deal found 7/21![United Airlines logo]()
$217
This Delta deal was found by Cheapflights users on 7/22. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Delta is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
sam. 8/155:21 pm
SDF
- ORD
1 stop4h 09m
Delta
dim. 8/166:59 am
ORD
- SDF
1 stop5h 52m
Delta
Deal found 7/22![Delta logo]()
$247
This Delta deal was found by Cheapflights users on 7/22. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Delta is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
sam. 8/157:55 am
SDF
- MDW
1 stop5h 44m
Delta
dim. 8/169:24 am
MDW
- SDF
1 stop3h 27m
Delta
Deal found 7/22![Delta logo]()
$247
This American Airlines deal was found by Cheapflights users on 7/21. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure American Airlines is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
ven. 8/216:28 am
SDF
- ORD
Nonstop1h 47m
American Airlines
dim. 8/233:24 pm
ORD
- SDF
Nonstop1h 36m
American Airlines
Deal found 7/21![American Airlines logo]()
$227
This Southwest deal was found by Cheapflights users on 7/21. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Southwest is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
ven. 8/213:20 pm
SDF
- MDW
2 stops7h 35m
Southwest
lun. 8/248:15 am
MDW
- SDF
2 stops6h 15m
Southwest
Deal found 7/21![Southwest logo]()
$252
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 juillet 22, 2026.
Search for one-way flight options from Louisville to Illinois. Find affordable one-way fares based on user searches. Data last updated juillet 22, 2026.
This Kiwi.com deal was found by Cheapflights users on 7/21. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Kiwi.com is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
lun. 8/179:10 pm
SDF
- ORD
1 stop16h 40m
Multiple Airlines
Deal found 7/21![Multiple Airlines logo]()
$96
This United Airlines deal was found by Cheapflights users on 7/21. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure United Airlines is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
jeu. 8/2010:23 am
SDF
- ORD
Nonstop1h 40m
United Airlines
Deal found 7/21![United Airlines logo]()
$109
This Southwest deal was found by Cheapflights users on 7/21. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Southwest is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
mer. 8/268:45 am
SDF
- MDW
Nonstop1h 15m
Southwest
Deal found 7/21![Southwest logo]()
$109
This American Airlines deal was found by Cheapflights users on 7/21. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure American Airlines is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
ven. 8/216:28 am
SDF
- ORD
Nonstop1h 47m
American Airlines
Deal found 7/21![American Airlines logo]()
$114
This Delta deal was found by Cheapflights users on 7/17. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Delta is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
ven. 9/117:55 am
SDF
- ORD
1 stop6h 04m
Delta
Deal found 7/17![Delta logo]()
$119
This American Airlines deal was found by Cheapflights users on 7/20. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure American Airlines is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
lun. 8/106:30 pm
SDF
- ORD
Nonstop1h 54m
American Airlines
Deal found 7/20![American Airlines logo]()
$123
This Delta deal was found by Cheapflights users on 7/21. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Delta is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
sam. 10/310:32 am
SDF
- ORD
1 stop6h 42m
Delta
Deal found 7/21![Delta logo]()
$124
This Delta deal was found by Cheapflights users on 7/21. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Delta is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
lun. 8/177:55 am
SDF
- MDW
1 stop5h 44m
Delta
Deal found 7/21![Delta logo]()
$124
This Delta deal was found by Cheapflights users on 7/17. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Delta is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
sam. 8/155:21 pm
SDF
- ORD
1 stop4h 09m
Delta
Deal found 7/17![Delta logo]()
$134
This Delta deal was found by Cheapflights users on 7/17. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Delta is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
sam. 8/157:55 am
SDF
- MDW
1 stop5h 44m
Delta
Deal found 7/17![Delta logo]()
$134
This Southwest deal was found by Cheapflights users on 7/20. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Southwest is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
lun. 8/106:45 am
SDF
- MDW
2 stops9h 45m
Southwest
Deal found 7/20![Southwest logo]()
$139
This Kiwi.com deal was found by Cheapflights users on 7/18. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Kiwi.com is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
dim. 8/26:52 pm
SDF
- MDW
1 stop26h 38m
Allegiant Air
Deal found 7/18![Allegiant Air logo]()
$142
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 juillet 22, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $217 (United Airlines) |
One-way from | $96 (Kiwi.com) |
Popular in | January |
Cheapest in | November |
Average price | $337 |
Good round-trip deal | $356 or less |
Good one-way deal | $229 or less |
Cheapflights Fare Finder
Ā
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 juillet 22, 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
lun. 11/9
7:55 pm-8:10 pm
Nonstop1h 15m
Chicago Midway
jeu. 11/12
7:50 am-5:00 pm
2 stops8h 10m
$232
LouisvilleChicago
SDF - MDW
SDFMDW
Louisville Intl
jeu. 9/3
7:10 pm-7:25 pm
Nonstop1h 15m
Chicago Midway
ven. 9/4
5:25 pm-10:35 pm
1 stop4h 10m
$237
LouisvilleChicago
SDF - ORD
SDFORD
Louisville Intl
ven. 8/21
5:25 pm-8:30 pm
1 stop4h 05m
Chicago O'Hare Intl
dim. 8/23
6:59 am-1:51 pm
1 stop5h 52m
$247
LouisvilleChicago
SDF - ORD
SDFORD
Louisville Intl
jeu. 9/10
11:00 am-11:42 am
Nonstop1h 42m
Chicago O'Hare Intl
lun. 9/14
9:20 pm-11:56 pm
Nonstop1h 36m
$247
LouisvilleChicago
SDF - MDW
SDFMDW
Louisville Intl
sam. 8/15
9:00 am-9:15 am
Nonstop1h 15m
Chicago Midway
mar. 8/18
1:00 pm-3:15 pm
Nonstop1h 15m
$247
LouisvilleChicago
SDF - MDW
SDFMDW
Louisville Intl
jeu. 8/27
7:10 pm-7:25 pm
Nonstop1h 15m
Chicago Midway
lun. 8/31
8:00 am-10:25 am
Nonstop1h 25m
$247
LouisvilleChicago
SDF - MDW
SDFMDW
Louisville Intl
sam. 8/22
3:50 pm-8:30 pm
1 stop5h 40m
Chicago Midway
sam. 8/29
3:15 pm-5:25 pm
Nonstop1h 10m
$257
LouisvilleChicago
SDF - MDW
SDFMDW
Louisville Intl
mer. 12/30
8:15 pm-8:40 pm
Nonstop1h 25m
Chicago Midway
jeu. 1/7
5:35 pm-7:50 pm
Nonstop1h 15m
$261
Quickest round-trip
LouisvilleChicago
SDF - MDW
SDFMDW
Louisville Intl
jeu. 10/22
7:50 pm-8:05 pm
Nonstop1h 15m
Chicago Midway
dim. 10/25
7:00 pm-9:10 pm
Nonstop1h 10m
$271
LouisvilleChicago
SDF - MDW
SDFMDW
Louisville Intl
ven. 10/16
7:50 pm-8:05 pm
Nonstop1h 15m
Chicago Midway
lun. 10/19
6:55 pm-9:05 pm
Nonstop1h 10m
$281
Showing 1-10 of 58 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-ORD
SDF-MDW
SDF-STL
SDF-MLI
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-ORD
SDF-MDW
SDF-STL
SDF-MLI
What is the cheapest month to book a flight from Louisville to Illinois?
Currently, October is the cheapest month in which you can book a flight from Louisville to Illinois (average of $226). Flying from Louisville to Illinois in June is currently the most expensive (average of $390). 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 juillet 22, 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 juillet 22, 2026.
The most flights from SDF to USIL are scheduled on a Tuesday (39 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (19 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 July 18, 2026.
Travelers seeking maximum savings on their Louisville to Illinois flight should consider departing on Tuesday at noon 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 juillet 22, 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.
Boarding
8.1
Crew
8.6
Entertainment
7.5
Overall
8.0
Food
7.0
Comfort
8.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Boarding
8.1
Crew
8.6
Entertainment
7.5
Overall
8.0
Food
7.0
Comfort
8.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Boarding
8.1
Crew
8.6
Entertainment
7.5
Overall
8.0
Food
7.0
Comfort
8.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Boarding
8.1
Crew
8.6
Entertainment
7.5
Overall
8.0
Food
7.0
Comfort
8.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Related info for your journey
Find useful and relevant information for your journey from Louisville 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 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 juillet 22, 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 juillet 22, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$77 | Average$269 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$97 | Average$294 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$137 | Average$338 | FlexibilityNo cancel fee | On-time69% |