$90+ 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 8/31. Fares are subject to change and may not be available on all flights or dates of travel.
SDF ā ORD
Aug 4 ā Aug 111
Round-trip
1 adult, Economy
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Find cheap flights from Louisville to Illinois with Cheapflights
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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
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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 July 5, 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 July 5, 2026.
This American Airlines deal was found by Cheapflights users on 7/1. 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.
Sat 8/810:23 am
SDF
- ORD
Nonstop1h 39m
American Airlines
Wed 8/128:05 am
ORD
- SDF
Nonstop1h 30m
American Airlines
Deal found 7/1![American Airlines logo]()
$223
This Southwest deal was found by Cheapflights users on 7/2. 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.
Sat 7/257:15 pm
SDF
- MDW
Nonstop1h 15m
Southwest
Tue 7/287:45 am
MDW
- SDF
Nonstop1h 20m
Southwest
Deal found 7/2![Southwest logo]()
$223
This Southwest deal was found by Cheapflights users on 7/1. 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.
Wed 9/307:05 am
SDF
- MDW
1 stop4h 45m
Southwest
Wed 9/301:00 pm
MDW
- SDF
Nonstop1h 15m
Southwest
Deal found 7/1![Southwest logo]()
$233
This United Airlines deal was found by Cheapflights users on 7/2. 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.
Sat 8/87:55 pm
SDF
- ORD
Nonstop1h 45m
United Airlines
Mon 8/109:25 pm
ORD
- SDF
Nonstop1h 34m
United Airlines
Deal found 7/2![United Airlines logo]()
$235
This Southwest deal was found by Cheapflights users on 7/2. 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.
Sat 8/89:00 am
SDF
- MDW
Nonstop1h 15m
Southwest
Mon 8/106:10 pm
MDW
- SDF
Nonstop1h 15m
Southwest
Deal found 7/2![Southwest logo]()
$235
This American Airlines deal was found by Cheapflights users on 7/1. 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.
Sat 8/810:23 am
SDF
- ORD
Nonstop1h 39m
American Airlines
Mon 8/108:05 am
ORD
- SDF
Nonstop1h 30m
American Airlines
Deal found 7/1![American Airlines logo]()
$236
This Delta deal was found by Cheapflights users on 7/1. 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.
Sat 8/810:34 am
SDF
- ORD
1 stop4h 16m
Delta
Wed 8/126:59 am
ORD
- SDF
1 stop5h 52m
Delta
Deal found 7/1![Delta logo]()
$243
This Delta deal was found by Cheapflights users on 7/1. 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.
Sat 8/87:55 am
SDF
- MDW
1 stop5h 44m
Delta
Wed 8/129:24 am
MDW
- SDF
1 stop3h 27m
Delta
Deal found 7/1![Delta logo]()
$243
This American Airlines deal was found by Cheapflights users on 6/30. 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.
Thu 9/102:47 pm
SDF
- ORD
Nonstop1h 43m
American Airlines
Mon 9/147:09 am
ORD
- SDF
Nonstop1h 34m
American Airlines
Deal found 6/30![American Airlines logo]()
$247
This Southwest deal was found by Cheapflights users on 7/1. 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.
Thu 8/209:00 am
SDF
- MDW
Nonstop1h 15m
Southwest
Mon 10/196:55 pm
MDW
- SDF
Nonstop1h 10m
Southwest
Deal found 7/1![Southwest logo]()
$247
This Southwest deal was found by Cheapflights users on 7/1. 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.
Sat 8/158:20 am
SDF
- MDW
2 stops5h 45m
Southwest
Tue 8/1812:45 pm
MDW
- SDF
2 stops7h 45m
Southwest
Deal found 7/1![Southwest logo]()
$253
This Delta deal was found by Cheapflights users on 7/2. 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.
Sat 8/87:55 am
SDF
- ORD
1 stop3h 47m
Delta
Mon 8/101:59 pm
ORD
- SDF
1 stop6h 20m
Delta
Deal found 7/2![Delta logo]()
$255
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 July 5, 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 July 5, 2026.
This Southwest deal was found by Cheapflights users on 7/1. 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.
Wed 8/195:30 am
SDF
- MDW
1 stop4h 30m
Southwest
Sat 10/178:05 am
MDW
- SDF
Nonstop1h 15m
Southwest
Deal found 7/1![Southwest logo]()
$233
This Delta deal was found by Cheapflights users on 7/2. 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.
Thu 9/1010:32 am
SDF
- ORD
1 stop6h 42m
Delta
Mon 9/141:55 pm
ORD
- SDF
1 stop6h 21m
Delta
Deal found 7/2![Delta logo]()
$267
This United Airlines deal was found by Cheapflights users on 7/1. 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.
Sat 8/87:15 am
SDF
- STL
1 stop5h 56m
United Airlines
Mon 8/101:13 pm
STL
- SDF
1 stop6h 10m
United Airlines
Deal found 7/1![United Airlines logo]()
$275
This Southwest deal was found by Cheapflights users on 7/1. 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.
Wed 9/305:30 am
SDF
- MDW
1 stop4h 30m
Southwest
Wed 9/302:40 pm
MDW
- SDF
1 stop4h 55m
Southwest
Deal found 7/1![Southwest logo]()
$243
This American Airlines deal was found by Cheapflights users on 7/3. 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.
Fri 8/711:10 am
SDF
- MLI
2 stops8h 01m
American Airlines
Sun 8/96:00 am
MLI
- SDF
1 stop3h 35m
American Airlines
Deal found 7/3![American Airlines logo]()
$495
This Southwest deal was found by Cheapflights users on 6/30. 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.
Sat 8/83:50 pm
SDF
- MDW
1 stop5h 40m
Southwest
Mon 8/108:00 am
MDW
- SDF
Nonstop1h 25m
Southwest
Deal found 6/30![Southwest logo]()
$245
This United Airlines deal was found by Cheapflights users on 7/4. 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.
Sun 8/27:15 am
SDF
- MLI
1 stop6h 21m
United Airlines
Sat 8/81:15 pm
MLI
- SDF
1 stop6h 08m
United Airlines
Deal found 7/4![United Airlines logo]()
$289
This Southwest deal was found by Cheapflights users on 7/1. 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.
Thu 8/209:00 am
SDF
- MDW
Nonstop1h 15m
Southwest
Mon 10/196:55 pm
MDW
- SDF
Nonstop1h 10m
Southwest
Deal found 7/1![Southwest logo]()
$247
This Delta deal was found by Cheapflights users on 7/4. 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.
Sat 8/87:55 am
SDF
- ORD
1 stop6h 55m
Delta
Tue 8/118:48 am
ORD
- SDF
1 stop4h 03m
Delta
Deal found 7/4![Delta logo]()
$315
This United Airlines deal was found by Cheapflights users on 7/4. 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.
Thu 8/209:00 am
SDF
- ORD
Nonstop1h 41m
United Airlines
Sun 8/236:56 am
ORD
- SDF
Nonstop1h 42m
United Airlines
Deal found 7/4![United Airlines logo]()
$315
This Southwest deal was found by Cheapflights users on 7/2. 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.
Sat 8/156:45 am
SDF
- STL
2 stops7h 30m
Southwest
Sat 8/225:45 am
STL
- SDF
1 stop3h 25m
Southwest
Deal found 7/2![Southwest logo]()
$266
This Delta deal was found by Cheapflights users on 7/2. 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.
Thu 10/17:55 am
SDF
- ORD
1 stop6h 04m
Delta
Sun 10/41:55 pm
ORD
- SDF
1 stop6h 21m
Delta
Deal found 7/2![Delta logo]()
$323
This United Airlines deal was found by Cheapflights users on 7/2. 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.
Sat 8/87:55 pm
SDF
- ORD
Nonstop1h 45m
United Airlines
Mon 8/109:25 pm
ORD
- SDF
Nonstop1h 34m
United Airlines
Deal found 7/2![United Airlines logo]()
$318
This Southwest deal was found by Cheapflights users on 7/1. 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.
Mon 8/36:05 pm
SDF
- MDW
1 stop4h 55m
Southwest
Wed 8/56:20 pm
MDW
- SDF
Nonstop1h 15m
Southwest
Deal found 7/1![Southwest logo]()
$279
This United Airlines deal was found by Cheapflights users on 7/1. 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.
Wed 9/307:00 am
SDF
- ORD
Nonstop1h 40m
United Airlines
Wed 9/3012:55 pm
ORD
- SDF
1 stop5h 29m
United Airlines
Deal found 7/1![United Airlines logo]()
$328
This Delta deal was found by Cheapflights users on 7/3. 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.
Fri 7/2410:34 am
SDF
- ORD
1 stop6h 49m
Delta
Sun 7/267:05 am
ORD
- SDF
1 stop5h 37m
Delta
Deal found 7/3![Delta logo]()
$379
This Southwest deal was found by Cheapflights users on 7/2. 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.
Sat 8/88:20 am
SDF
- MDW
2 stops5h 45m
Southwest
Sun 8/97:35 am
MDW
- SDF
1 stop5h 35m
Southwest
Deal found 7/2![Southwest logo]()
$294
This United Airlines deal was found by Cheapflights users on 7/1. 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.
Mon 8/36:00 am
SDF
- ORD
1 stop4h 36m
United Airlines
Wed 8/511:00 am
ORD
- SDF
Nonstop1h 35m
United Airlines
Deal found 7/1![United Airlines logo]()
$330
This Delta deal was found by Cheapflights users on 7/2. 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.
Thu 7/235:28 pm
SDF
- ORD
1 stop4h 03m
Delta
Sun 7/267:05 am
ORD
- SDF
1 stop5h 37m
Delta
Deal found 7/2![Delta logo]()
$379
This Southwest deal was found by Cheapflights users on 7/4. 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.
Wed 10/148:35 am
SDF
- MDW
Nonstop1h 15m
Southwest
Fri 10/167:55 am
MDW
- SDF
Nonstop1h 15m
Southwest
Deal found 7/4![Southwest logo]()
$295
This United Airlines deal was found by Cheapflights users on 7/1. 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.
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 7/1![United Airlines logo]()
$331
This Southwest deal was found by Cheapflights users on 7/2. 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.
Wed 12/235:45 am
SDF
- MDW
1 stop7h 20m
Southwest
Wed 12/305:20 am
MDW
- SDF
1 stop5h 35m
Southwest
Deal found 7/2![Southwest logo]()
$305
This United Airlines deal was found by Cheapflights users on 6/30. 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.
Sat 7/186:00 am
SDF
- ORD
1 stop4h 36m
United Airlines
Wed 7/222:29 pm
ORD
- SDF
Nonstop1h 34m
United Airlines
Deal found 6/30![United Airlines logo]()
$343
This Southwest deal was found by Cheapflights users on 7/1. 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.
Sat 8/86:45 am
SDF
- STL
2 stops7h 30m
Southwest
Mon 8/106:55 am
STL
- SDF
1 stop5h 40m
Southwest
Deal found 7/1![Southwest logo]()
$315
This United Airlines deal was found by Cheapflights users on 6/30. 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.
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 6/30![United Airlines logo]()
$359
This United Airlines deal was found by Cheapflights users on 7/3. 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.
Thu 7/305:50 pm
SDF
- ORD
Nonstop1h 50m
United Airlines
Fri 7/314:25 pm
ORD
- SDF
Nonstop1h 31m
United Airlines
Deal found 7/3![United Airlines logo]()
$359
This Southwest deal was found by Cheapflights users on 7/1. 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.
Tue 9/225:00 pm
SDF
- STL
1 stop5h 10m
Southwest
Fri 9/252:25 pm
STL
- SDF
1 stop6h 30m
Southwest
Deal found 7/1![Southwest logo]()
$328
This Southwest deal was found by Cheapflights users on 7/2. 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.
Tue 9/112:50 pm
SDF
- STL
1 stop5h 00m
Southwest
Fri 9/43:45 pm
STL
- SDF
1 stop3h 45m
Southwest
Deal found 7/2![Southwest logo]()
$328
This United Airlines deal was found by Cheapflights users on 7/4. 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.
Fri 9/45:15 am
SDF
- ORD
Nonstop1h 40m
United Airlines
Sun 9/612:55 pm
ORD
- SDF
1 stop5h 20m
United Airlines
Deal found 7/4![United Airlines logo]()
$364
This Southwest deal was found by Cheapflights users on 7/2. 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.
Fri 7/246:40 am
SDF
- STL
1 stop7h 00m
Southwest
Sat 7/255:40 am
STL
- SDF
1 stop3h 20m
Southwest
Deal found 7/2![Southwest logo]()
$338
Last-minute flights from Louisville to IllinoisDiscover last-minute flight deals from Louisville to Illinois. Data last updated July 5, 2026 and is based on user searches.
Discover last-minute flight deals from Louisville to Illinois. Data last updated July 5, 2026 and is based on user searches.
This Southwest deal was found by Cheapflights users on 7/2. 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.
Sat 7/257:15 pm
SDF
- MDW
Nonstop1h 15m
Southwest
Tue 7/287:45 am
MDW
- SDF
Nonstop1h 20m
Southwest
Deal found 7/2![Southwest logo]()
$223
This American Airlines deal was found by Cheapflights users on 6/30. 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.
Sat 8/810:23 am
SDF
- ORD
Nonstop1h 39m
American Airlines
Wed 8/128:05 am
ORD
- SDF
Nonstop1h 30m
American Airlines
Deal found 6/30![American Airlines logo]()
$223
This United Airlines deal was found by Cheapflights users on 7/2. 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.
Sat 8/87:55 pm
SDF
- ORD
Nonstop1h 45m
United Airlines
Mon 8/109:25 pm
ORD
- SDF
Nonstop1h 34m
United Airlines
Deal found 7/2![United Airlines logo]()
$235
This Southwest deal was found by Cheapflights users on 7/2. 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.
Sat 8/89:00 am
SDF
- MDW
Nonstop1h 15m
Southwest
Mon 8/106:10 pm
MDW
- SDF
Nonstop1h 15m
Southwest
Deal found 7/2![Southwest logo]()
$235
This American Airlines deal was found by Cheapflights users on 6/30. 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.
Sat 8/810:23 am
SDF
- ORD
Nonstop1h 39m
American Airlines
Mon 8/108:05 am
ORD
- SDF
Nonstop1h 30m
American Airlines
Deal found 6/30![American Airlines logo]()
$236
This Delta deal was found by Cheapflights users on 7/1. 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.
Sat 8/810:34 am
SDF
- ORD
1 stop4h 16m
Delta
Wed 8/126:59 am
ORD
- SDF
1 stop5h 52m
Delta
Deal found 7/1![Delta logo]()
$243
This Delta deal was found by Cheapflights users on 7/1. 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.
Sat 8/87:55 am
SDF
- MDW
1 stop5h 44m
Delta
Wed 8/129:24 am
MDW
- SDF
1 stop3h 27m
Delta
Deal found 7/1![Delta logo]()
$243
This Delta deal was found by Cheapflights users on 7/2. 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.
Sat 8/87:55 am
SDF
- ORD
1 stop3h 47m
Delta
Mon 8/101:59 pm
ORD
- SDF
1 stop6h 20m
Delta
Deal found 7/2![Delta logo]()
$255
This Southwest deal was found by Cheapflights users on 7/1. 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.
Sat 8/158:20 am
SDF
- MDW
2 stops5h 45m
Southwest
Tue 8/1812:45 pm
MDW
- SDF
2 stops7h 45m
Southwest
Deal found 7/1![Southwest logo]()
$253
This Southwest deal was found by Cheapflights users on 7/2. 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.
Sat 8/153:50 pm
SDF
- STL
1 stop5h 50m
Southwest
Sat 8/225:45 am
STL
- SDF
1 stop3h 25m
Southwest
Deal found 7/2![Southwest logo]()
$261
This Delta deal was found by Cheapflights users on 7/2. 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.
Mon 8/177:55 am
SDF
- MDW
1 stop5h 44m
Delta
Sat 8/229:24 am
MDW
- SDF
1 stop6h 17m
Delta
Deal found 7/2![Delta logo]()
$255
This Southwest deal was found by Cheapflights users on 7/1. 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.
Thu 8/209:00 am
SDF
- MDW
Nonstop1h 15m
Southwest
Mon 10/196:55 pm
MDW
- SDF
Nonstop1h 10m
Southwest
Deal found 7/1![Southwest logo]()
$247
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 July 5, 2026.
Search for one-way flight options from Louisville to Illinois. Find affordable one-way fares based on user searches. Data last updated July 5, 2026.
This Kiwi.com deal was found by Cheapflights users on 6/30. 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.
Mon 8/3111:19 am
SDF
- ORD
1 stop26h 31m
Multiple Airlines
Deal found 6/30![Multiple Airlines logo]()
$90
This American Airlines deal was found by Cheapflights users on 6/30. 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.
Sat 10/37:03 am
SDF
- ORD
Nonstop1h 49m
American Airlines
Deal found 6/30![American Airlines logo]()
$112
This Southwest deal was found by Cheapflights users on 7/1. 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.
Wed 7/294:15 pm
SDF
- MDW
Nonstop1h 15m
Southwest
Deal found 7/1![Southwest logo]()
$112
This Kiwi.com deal was found by Cheapflights users on 7/2. 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.
Sun 8/26:52 pm
SDF
- MDW
1 stop26h 38m
Allegiant Air
Deal found 7/2![Allegiant Air logo]()
$116
This Kiwi.com deal was found by Cheapflights users on 6/30. 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.
Mon 7/278:48 pm
SDF
- ORD
1 stop16h 27m
Multiple Airlines
Deal found 6/30![Multiple Airlines logo]()
$117
This Delta deal was found by Cheapflights users on 7/1. 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.
Sat 10/310:32 am
SDF
- ORD
1 stop6h 42m
Delta
Deal found 7/1![Delta logo]()
$122
This Southwest deal was found by Cheapflights users on 6/30. 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.
Sat 8/15:15 pm
SDF
- MDW
1 stop6h 15m
Southwest
Deal found 6/30![Southwest logo]()
$122
This United Airlines deal was found by Cheapflights users on 7/3. 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.
Thu 10/2210:25 am
SDF
- ORD
Nonstop1h 40m
United Airlines
Deal found 7/3![United Airlines logo]()
$124
This Southwest deal was found by Cheapflights users on 7/3. 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.
Thu 8/62:15 pm
SDF
- MDW
Nonstop1h 15m
Southwest
Deal found 7/3![Southwest logo]()
$124
This Southwest deal was found by Cheapflights users on 7/1. 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.
Sat 8/298:20 am
SDF
- MDW
2 stops5h 45m
Southwest
Deal found 7/1![Southwest logo]()
$127
This Kiwi.com deal was found by Cheapflights users on 7/3. 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.
Sat 10/36:27 pm
SDF
- MDW
1 stop16h 51m
Allegiant Air
Deal found 7/3![Allegiant Air logo]()
$128
This Kiwi.com deal was found by Cheapflights users on 7/2. 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.
Thu 7/306:50 pm
SDF
- MDW
1 stop26h 41m
Allegiant Air
Deal found 7/2![Allegiant Air logo]()
$129
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 July 5, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $223 (American Airlines) |
One-way from | $90 (Kiwi.com) |
Popular in | January |
Cheapest in | November |
Average price | $337 |
Good round-trip deal | $355 or less |
Good one-way deal | $223 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 July 5, 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
Wed 8/19
5:30 am-9:00 am
1 stop4h 30m
Chicago Midway
Sat 10/17
8:05 am-10:20 am
Nonstop1h 15m
$233
LouisvilleChicago
SDF - MDW
SDFMDW
Louisville Intl
Wed 9/30
5:30 am-9:00 am
1 stop4h 30m
Chicago Midway
Wed 9/30
2:40 pm-8:35 pm
1 stop4h 55m
$243
LouisvilleChicago
SDF - MDW
SDFMDW
Louisville Intl
Sat 8/8
3:50 pm-8:30 pm
1 stop5h 40m
Chicago Midway
Mon 8/10
8:00 am-10:25 am
Nonstop1h 25m
$245
Quickest round-trip
LouisvilleChicago
SDF - MDW
SDFMDW
Louisville Intl
Thu 8/20
9:00 am-9:15 am
Nonstop1h 15m
Chicago Midway
Mon 10/19
6:55 pm-9:05 pm
Nonstop1h 10m
$247
LouisvilleSt. Louis
SDF - STL
SDFSTL
Louisville Intl
Sat 8/15
6:45 am-1:15 pm
2 stops7h 30m
Lambert-St Louis
Sat 8/22
5:45 am-10:10 am
1 stop3h 25m
$266
LouisvilleChicago
SDF - ORD
SDFORD
Louisville Intl
Thu 9/10
10:32 am-4:14 pm
1 stop6h 42m
Chicago O'Hare Intl
Mon 9/14
1:55 pm-9:16 pm
1 stop6h 21m
$267
LouisvilleSt. Louis
SDF - STL
SDFSTL
Louisville Intl
Sat 8/8
7:15 am-12:11 pm
1 stop5h 56m
Lambert-St Louis
Mon 8/10
1:13 pm-8:23 pm
1 stop6h 10m
$275
LouisvilleChicago
SDF - MDW
SDFMDW
Louisville Intl
Mon 8/3
6:05 pm-10:00 pm
1 stop4h 55m
Chicago Midway
Wed 8/5
6:20 pm-8:35 pm
Nonstop1h 15m
$279
LouisvilleMoline
SDF - MLI
SDFMLI
Louisville Intl
Sun 8/2
7:15 am-12:36 pm
1 stop6h 21m
Moline Quad-City
Sat 8/8
1:15 pm-8:23 pm
1 stop6h 08m
$289
LouisvilleChicago
SDF - MDW
SDFMDW
Louisville Intl
Sat 8/8
8:20 am-1:05 pm
2 stops5h 45m
Chicago Midway
Sun 8/9
7:35 am-2:10 pm
1 stop5h 35m
$294
Showing 1-10 of 59 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-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-ORD
SDF-MDW
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 July is currently the most expensive (average of $262). 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 July 5, 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 July 5, 2026.
The most flights from SDF to USIL are scheduled on a Saturday (41 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (23 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 4, 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 July 5, 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
Boarding
8.1
Comfort
8.0
Crew
8.6
Overall
7.9
Entertainment
7.5
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Food
7.0
Boarding
8.1
Comfort
8.0
Crew
8.6
Overall
7.9
Entertainment
7.5
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Food
7.0
Boarding
8.1
Comfort
8.0
Crew
8.6
Overall
7.9
Entertainment
7.5
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Food
7.0
Boarding
8.1
Comfort
8.0
Crew
8.6
Overall
7.9
Entertainment
7.5
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.
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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 July 5, 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 July 5, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$77 | Average$259 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$97 | Average$294 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$137 | Average$328 | FlexibilityNo cancel fee | On-time69% |