$89+ Cheap flights from Louisville (SDF) to Illinois
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/19. Fares are subject to change and may not be available on all flights or dates of travel.
SDF ā ORD
Aug 10 ā Aug 171
Round-trip
1 adult, Economy
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Find cheap flights from Louisville to Illinois with Cheapflights
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Cheapest flights from Louisville to IllinoisExplore the most affordable flight options available from Louisville to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 11, 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 11, 2026.
This United Airlines deal was found by Cheapflights users on 7/9. 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 9/210:23 am
SDF
- ORD
Nonstop1h 40m
United Airlines
Tue 9/85:55 pm
ORD
- SDF
Nonstop1h 37m
United Airlines
Deal found 7/9![United Airlines logo]()
$177
This Southwest deal was found by Cheapflights users on 7/8. 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 8/67:10 pm
SDF
- MDW
Nonstop1h 15m
Southwest
Mon 8/106:10 pm
MDW
- SDF
Nonstop1h 15m
Southwest
Deal found 7/8![Southwest logo]()
$177
This American Airlines deal was found by Cheapflights users on 7/10. 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 8/611:05 am
SDF
- ORD
Nonstop1h 39m
American Airlines
Mon 8/108:05 am
ORD
- SDF
Nonstop1h 30m
American Airlines
Deal found 7/10![American Airlines logo]()
$178
This Southwest deal was found by Cheapflights users on 7/7. 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 8/128:45 am
SDF
- MDW
Nonstop1h 15m
Southwest
Wed 8/126:20 pm
MDW
- SDF
Nonstop1h 15m
Southwest
Deal found 7/7![Southwest logo]()
$178
This Southwest deal was found by Cheapflights users on 7/9. 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 10/13:35 pm
SDF
- MDW
Nonstop1h 15m
Southwest
Tue 10/66:00 pm
MDW
- SDF
Nonstop1h 10m
Southwest
Deal found 7/9![Southwest logo]()
$189
This Southwest deal was found by Cheapflights users on 7/7. 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 8/261:15 pm
SDF
- MDW
Nonstop1h 15m
Southwest
Mon 8/318:00 am
MDW
- SDF
Nonstop1h 25m
Southwest
Deal found 7/7![Southwest logo]()
$190
This Southwest deal was found by Cheapflights users on 7/8. 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 8/267:05 am
SDF
- MDW
2 stops9h 20m
Southwest
Thu 8/278:00 am
MDW
- SDF
Nonstop1h 25m
Southwest
Deal found 7/8![Southwest logo]()
$192
This Delta deal was found by Cheapflights users on 7/8. 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 8/65:25 pm
SDF
- ORD
1 stop4h 05m
Delta
Mon 8/106:59 am
ORD
- SDF
1 stop5h 52m
Delta
Deal found 7/8![Delta logo]()
$197
This Delta deal was found by Cheapflights users on 7/8. 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 8/62:34 pm
SDF
- MDW
1 stop4h 59m
Delta
Mon 8/109:24 am
MDW
- SDF
1 stop3h 27m
Delta
Deal found 7/8![Delta logo]()
$197
This United Airlines deal was found by Cheapflights users on 7/7. 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 10/137:00 am
SDF
- ORD
Nonstop1h 40m
United Airlines
Fri 10/164:30 pm
ORD
- SDF
Nonstop1h 41m
United Airlines
Deal found 7/7![United Airlines logo]()
$201
This United Airlines deal was found by Cheapflights users on 7/9. 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 9/25:15 am
SDF
- ORD
Nonstop1h 40m
United Airlines
Fri 9/44:38 pm
ORD
- SDF
Nonstop1h 37m
United Airlines
Deal found 7/9![United Airlines logo]()
$202
This Southwest deal was found by Cheapflights users on 7/10. 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 9/21:15 pm
SDF
- MDW
Nonstop1h 15m
Southwest
Fri 9/48:00 am
MDW
- SDF
Nonstop1h 25m
Southwest
Deal found 7/10![Southwest logo]()
$202
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 11, 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 11, 2026.
This United Airlines deal was found by Cheapflights users on 7/8. 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 8/139:00 am
SDF
- ORD
Nonstop1h 41m
United Airlines
Wed 9/96:55 am
ORD
- SDF
Nonstop1h 42m
United Airlines
Deal found 7/8![United Airlines logo]()
$177
This Southwest deal was found by Cheapflights users on 7/9. 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 9/54:55 pm
SDF
- MDW
Nonstop1h 20m
Southwest
Tue 9/81:00 pm
MDW
- SDF
Nonstop1h 15m
Southwest
Deal found 7/9![Southwest logo]()
$177
This Delta deal was found by Cheapflights users on 7/8. 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 8/65:25 pm
SDF
- ORD
1 stop4h 05m
Delta
Mon 8/106:59 am
ORD
- SDF
1 stop5h 52m
Delta
Deal found 7/8![Delta logo]()
$197
This American Airlines deal was found by Cheapflights users on 7/7. 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 8/286:30 pm
SDF
- STL
1 stop6h 44m
American Airlines
Sat 8/295:00 am
STL
- SDF
1 stop3h 45m
American Airlines
Deal found 7/7![American Airlines logo]()
$219
This United Airlines deal was found by Cheapflights users on 7/8. 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 8/107:15 am
SDF
- ORD
Nonstop1h 41m
United Airlines
Thu 8/132:00 pm
ORD
- SDF
Nonstop1h 38m
United Airlines
Deal found 7/8![United Airlines logo]()
$177
This Southwest deal was found by Cheapflights users on 7/9. 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 8/265:30 am
SDF
- MDW
1 stop4h 30m
Southwest
Sat 8/297:50 am
MDW
- SDF
Nonstop1h 20m
Southwest
Deal found 7/9![Southwest logo]()
$187
This Delta deal was found by Cheapflights users on 7/9. 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 9/510:34 am
SDF
- ORD
1 stop4h 16m
Delta
Tue 9/81:55 pm
ORD
- SDF
1 stop6h 21m
Delta
Deal found 7/9![Delta logo]()
$197
This Southwest deal was found by Cheapflights users on 7/9. 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 8/266:45 pm
SDF
- MDW
Nonstop1h 15m
Southwest
Thu 8/278:00 am
MDW
- SDF
Nonstop1h 25m
Southwest
Deal found 7/9![Southwest logo]()
$189
This Delta deal was found by Cheapflights users on 7/9. 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
- MDW
1 stop5h 44m
Delta
Tue 10/69:29 am
MDW
- SDF
1 stop3h 22m
Delta
Deal found 7/9![Delta logo]()
$197
This Southwest deal was found by Cheapflights users on 7/10. 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 8/294:55 pm
SDF
- MDW
Nonstop1h 20m
Southwest
Mon 8/312:35 pm
MDW
- SDF
2 stops7h 00m
Southwest
Deal found 7/10![Southwest logo]()
$192
This Delta deal was found by Cheapflights users on 7/8. 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 8/75:25 pm
SDF
- STL
1 stop4h 17m
Delta
Thu 8/1310:33 am
STL
- SDF
1 stop5h 46m
Delta
Deal found 7/8![Delta logo]()
$219
This Southwest deal was found by Cheapflights users on 7/10. 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 9/242:15 pm
SDF
- MDW
Nonstop1h 15m
Southwest
Fri 9/256:10 pm
MDW
- SDF
Nonstop1h 15m
Southwest
Deal found 7/10![Southwest logo]()
$202
This Southwest deal was found by Cheapflights users on 7/7. 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 8/67:10 pm
SDF
- MDW
Nonstop1h 15m
Southwest
Thu 8/136:10 pm
MDW
- SDF
Nonstop1h 15m
Southwest
Deal found 7/7![Southwest logo]()
$202
This United Airlines deal was found by Cheapflights users on 7/9. 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 8/77:55 pm
SDF
- MLI
1 stop4h 21m
United Airlines
Sun 8/92:31 pm
MLI
- SDF
1 stop4h 52m
United Airlines
Deal found 7/9![United Airlines logo]()
$289
This Southwest deal was found by Cheapflights users on 7/9. 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 9/56:45 am
SDF
- MDW
2 stops7h 35m
Southwest
Mon 9/78:00 am
MDW
- SDF
Nonstop1h 25m
Southwest
Deal found 7/9![Southwest logo]()
$205
This United Airlines deal was found by Cheapflights users on 7/10. 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 8/127:10 am
SDF
- STL
1 stop5h 52m
United Airlines
Sat 8/1512:59 pm
STL
- SDF
1 stop6h 37m
United Airlines
Deal found 7/10![United Airlines logo]()
$289
This Delta deal was found by Cheapflights users on 7/10. 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.
Sun 9/1310:32 am
SDF
- ORD
1 stop6h 42m
Delta
Thu 9/178:55 am
ORD
- SDF
1 stop4h 12m
Delta
Deal found 7/10![Delta logo]()
$266
This Southwest deal was found by Cheapflights users on 7/8. 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 8/48:45 am
SDF
- MDW
Nonstop1h 15m
Southwest
Wed 8/57:40 am
MDW
- SDF
1 stop3h 30m
Southwest
Deal found 7/8![Southwest logo]()
$212
This United Airlines deal was found by Cheapflights users on 7/7. 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 8/267:10 am
SDF
- ORD
Nonstop1h 40m
United Airlines
Mon 8/319:25 pm
ORD
- SDF
Nonstop1h 34m
United Airlines
Deal found 7/7![United Airlines logo]()
$295
This Southwest deal was found by Cheapflights users on 7/7. 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 8/265:30 am
SDF
- MDW
2 stops9h 25m
Southwest
Mon 8/312:35 pm
MDW
- SDF
2 stops7h 00m
Southwest
Deal found 7/7![Southwest logo]()
$220
This United Airlines deal was found by Cheapflights users on 7/9. 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 9/51:56 pm
SDF
- ORD
1 stop5h 41m
United Airlines
Mon 9/76:56 am
ORD
- SDF
Nonstop1h 42m
United Airlines
Deal found 7/9![United Airlines logo]()
$295
This Delta deal was found by Cheapflights users on 7/6. 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 9/172:47 pm
SDF
- ORD
1 stop6h 43m
Delta
Wed 10/72:00 pm
ORD
- SDF
1 stop6h 14m
Delta
Deal found 7/6![Delta logo]()
$315
This United Airlines deal was found by Cheapflights users on 7/10. 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 8/291:56 pm
SDF
- ORD
1 stop5h 41m
United Airlines
Mon 8/314:30 pm
ORD
- SDF
Nonstop1h 37m
United Airlines
Deal found 7/10![United Airlines logo]()
$295
This Southwest deal was found by Cheapflights users on 7/9. 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 8/255:30 am
SDF
- STL
2 stops6h 50m
Southwest
Wed 8/2610:45 am
STL
- SDF
2 stops8h 50m
Southwest
Deal found 7/9![Southwest logo]()
$229
This American Airlines deal was found by Cheapflights users on 7/9. 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 7/9![American Airlines logo]()
$495
This United Airlines deal was found by Cheapflights users on 7/9. 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 8/261:56 pm
SDF
- ORD
1 stop5h 41m
United Airlines
Thu 8/272:00 pm
ORD
- SDF
Nonstop1h 38m
United Airlines
Deal found 7/9![United Airlines logo]()
$307
This Southwest deal was found by Cheapflights users on 7/7. 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 8/45:00 pm
SDF
- STL
1 stop5h 10m
Southwest
Tue 8/1110:45 am
STL
- SDF
2 stops8h 50m
Southwest
Deal found 7/7![Southwest logo]()
$257
This United Airlines deal was found by Cheapflights users on 7/10. 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 9/246:00 am
SDF
- ORD
1 stop4h 38m
United Airlines
Fri 9/255:50 pm
ORD
- SDF
Nonstop1h 41m
United Airlines
Deal found 7/10![United Airlines logo]()
$332
This Southwest deal was found by Cheapflights users on 7/11. 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 8/255:00 pm
SDF
- STL
1 stop5h 10m
Southwest
Tue 9/13:45 pm
STL
- SDF
1 stop3h 50m
Southwest
Deal found 7/11![Southwest logo]()
$261
This American Airlines deal was found by Cheapflights users on 7/7. 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 9/256:00 am
SDF
- MLI
1 stop6h 38m
American Airlines
Mon 10/56:00 am
MLI
- SDF
2 stops9h 22m
American Airlines
Deal found 7/7![American Airlines logo]()
$626
Last-minute flights from Louisville to IllinoisDiscover last-minute flight deals from Louisville to Illinois. Data last updated July 11, 2026 and is based on user searches.
Discover last-minute flight deals from Louisville to Illinois. Data last updated July 11, 2026 and is based on user searches.
This Southwest deal was found by Cheapflights users on 7/8. 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 8/48:45 am
SDF
- MDW
Nonstop1h 15m
Southwest
Wed 8/59:00 am
MDW
- SDF
Nonstop1h 20m
Southwest
Deal found 7/8![Southwest logo]()
$203
This Southwest deal was found by Cheapflights users on 7/9. 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 8/58:45 am
SDF
- MDW
Nonstop1h 15m
Southwest
Sat 8/83:15 pm
MDW
- SDF
Nonstop1h 10m
Southwest
Deal found 7/9![Southwest logo]()
$189
This United Airlines deal was found by Cheapflights users on 7/11. 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 8/59:00 am
SDF
- ORD
Nonstop1h 38m
United Airlines
Thu 8/62:29 pm
ORD
- SDF
Nonstop1h 34m
United Airlines
Deal found 7/11![United Airlines logo]()
$217
This United Airlines deal was found by Cheapflights users on 7/8. 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 8/67:55 pm
SDF
- ORD
Nonstop1h 45m
United Airlines
Mon 8/105:50 pm
ORD
- SDF
Nonstop1h 33m
United Airlines
Deal found 7/8![United Airlines logo]()
$177
This Southwest deal was found by Cheapflights users on 7/8. 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 8/67:10 pm
SDF
- MDW
Nonstop1h 15m
Southwest
Mon 8/106:10 pm
MDW
- SDF
Nonstop1h 15m
Southwest
Deal found 7/8![Southwest logo]()
$177
This American Airlines deal was found by Cheapflights users on 7/10. 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 8/611:05 am
SDF
- ORD
Nonstop1h 39m
American Airlines
Mon 8/108:05 am
ORD
- SDF
Nonstop1h 30m
American Airlines
Deal found 7/10![American Airlines logo]()
$178
This Delta deal was found by Cheapflights users on 7/8. 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 8/65:25 pm
SDF
- ORD
1 stop4h 05m
Delta
Mon 8/106:59 am
ORD
- SDF
1 stop5h 52m
Delta
Deal found 7/8![Delta logo]()
$197
This Delta deal was found by Cheapflights users on 7/8. 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 8/62:34 pm
SDF
- MDW
1 stop4h 59m
Delta
Mon 8/109:24 am
MDW
- SDF
1 stop3h 27m
Delta
Deal found 7/8![Delta logo]()
$197
This American Airlines deal was found by Cheapflights users on 7/10. 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 8/76:28 am
SDF
- ORD
Nonstop1h 47m
American Airlines
Mon 8/106:50 pm
ORD
- SDF
Nonstop1h 35m
American Airlines
Deal found 7/10![American Airlines logo]()
$202
This Southwest deal was found by Cheapflights users on 7/7. 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 8/128:45 am
SDF
- MDW
Nonstop1h 15m
Southwest
Wed 8/126:20 pm
MDW
- SDF
Nonstop1h 15m
Southwest
Deal found 7/7![Southwest logo]()
$178
This Southwest deal was found by Cheapflights users on 7/7. 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 8/261:15 pm
SDF
- MDW
Nonstop1h 15m
Southwest
Mon 8/318:00 am
MDW
- SDF
Nonstop1h 25m
Southwest
Deal found 7/7![Southwest logo]()
$190
This Southwest deal was found by Cheapflights users on 7/8. 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 8/267:05 am
SDF
- MDW
2 stops9h 20m
Southwest
Thu 8/278:00 am
MDW
- SDF
Nonstop1h 25m
Southwest
Deal found 7/8![Southwest logo]()
$192
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 11, 2026.
Search for one-way flight options from Louisville to Illinois. Find affordable one-way fares based on user searches. Data last updated July 11, 2026.
This American Airlines deal was found by Cheapflights users on 7/9. 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 7/9![American Airlines logo]()
$89
This Southwest deal was found by Cheapflights users on 7/8. 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 7/8![Southwest logo]()
$89
This Delta deal was found by Cheapflights users on 7/8. 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 7/8![Delta logo]()
$99
This Delta deal was found by Cheapflights users on 7/8. 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.
Wed 10/77:55 am
SDF
- MDW
1 stop5h 53m
Delta
Deal found 7/8![Delta logo]()
$99
This Southwest deal was found by Cheapflights users on 7/8. 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 9/37:10 pm
SDF
- MDW
Nonstop1h 15m
Southwest
Deal found 7/8![Southwest logo]()
$101
This Southwest deal was found by Cheapflights users on 7/8. 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 10/77:10 am
SDF
- MDW
2 stops8h 15m
Southwest
Deal found 7/8![Southwest logo]()
$104
This Southwest deal was found by Cheapflights users on 7/11. 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 9/91:15 pm
SDF
- MDW
Nonstop1h 15m
Southwest
Deal found 7/11![Southwest logo]()
$109
This American Airlines deal was found by Cheapflights users on 7/9. 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 8/66:30 pm
SDF
- STL
1 stop6h 44m
American Airlines
Deal found 7/9![American Airlines logo]()
$110
This Southwest deal was found by Cheapflights users on 7/6. 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 9/53:50 pm
SDF
- MDW
1 stop5h 40m
Southwest
Deal found 7/6![Southwest logo]()
$111
This United Airlines deal was found by Cheapflights users on 7/7. 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 9/2111:00 am
SDF
- ORD
Nonstop1h 42m
United Airlines
Deal found 7/7![United Airlines logo]()
$113
This United Airlines deal was found by Cheapflights users on 7/8. 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 8/77:15 am
SDF
- ORD
Nonstop1h 41m
United Airlines
Deal found 7/8![United Airlines logo]()
$114
This Southwest deal was found by Cheapflights users on 7/7. 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 8/56:45 pm
SDF
- MDW
Nonstop1h 15m
Southwest
Deal found 7/7![Southwest logo]()
$114
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 11, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $177 (United Airlines) |
One-way from | $89 (American Airlines) |
Popular in | January |
Cheapest in | November |
Average price | $337 |
Good round-trip deal | $358 or less |
Good one-way deal | $228 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 11, 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 - ORD
SDFORD
Louisville Intl
Thu 8/13
9:00 am-9:41 am
Nonstop1h 41m
Chicago O'Hare Intl
Wed 9/9
6:55 am-9:37 am
Nonstop1h 42m
$177
LouisvilleChicago
SDF - MDW
SDFMDW
Louisville Intl
Sat 9/5
4:55 pm-5:15 pm
Nonstop1h 20m
Chicago Midway
Tue 9/8
1:00 pm-3:15 pm
Nonstop1h 15m
$177
LouisvilleChicago
SDF - ORD
SDFORD
Louisville Intl
Mon 8/10
7:15 am-7:56 am
Nonstop1h 41m
Chicago O'Hare Intl
Thu 8/13
2:00 pm-4:38 pm
Nonstop1h 38m
$177
LouisvilleChicago
SDF - MDW
SDFMDW
Louisville Intl
Wed 8/26
5:30 am-9:00 am
1 stop4h 30m
Chicago Midway
Sat 8/29
7:50 am-10:10 am
Nonstop1h 20m
$187
LouisvilleChicago
SDF - MDW
SDFMDW
Louisville Intl
Wed 8/26
6:45 pm-7:00 pm
Nonstop1h 15m
Chicago Midway
Thu 8/27
8:00 am-10:25 am
Nonstop1h 25m
$189
LouisvilleChicago
SDF - MDW
SDFMDW
Louisville Intl
Sat 8/29
4:55 pm-5:15 pm
Nonstop1h 20m
Chicago Midway
Mon 8/31
2:35 pm-10:35 pm
2 stops7h 00m
$192
LouisvilleChicago
SDF - ORD
SDFORD
Louisville Intl
Thu 8/6
5:25 pm-8:30 pm
1 stop4h 05m
Chicago O'Hare Intl
Mon 8/10
6:59 am-1:51 pm
1 stop5h 52m
$197
LouisvilleChicago
SDF - ORD
SDFORD
Louisville Intl
Sat 9/5
10:34 am-1:50 pm
1 stop4h 16m
Chicago O'Hare Intl
Tue 9/8
1:55 pm-9:16 pm
1 stop6h 21m
$197
LouisvilleChicago
SDF - MDW
SDFMDW
Louisville Intl
Thu 10/1
7:55 am-12:39 pm
1 stop5h 44m
Chicago Midway
Tue 10/6
9:29 am-1:51 pm
1 stop3h 22m
$197
Quickest round-trip
LouisvilleChicago
SDF - MDW
SDFMDW
Louisville Intl
Thu 9/24
2:15 pm-2:30 pm
Nonstop1h 15m
Chicago Midway
Fri 9/25
6:10 pm-8:25 pm
Nonstop1h 15m
$202
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Louisville to Illinois
Have a flexible travel schedule? Discover the best time to fly to Illinois from Louisville with our price prediction graph.
SDF-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, 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 11, 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 July 11, 2026.
The most flights from SDF to USIL are scheduled on a Friday (39 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (24 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 11, 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 11, 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.
Entertainment
7.5
Crew
8.6
Food
7.0
Boarding
8.1
Comfort
8.0
Overall
7.9
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Entertainment
7.5
Crew
8.6
Food
7.0
Boarding
8.1
Comfort
8.0
Overall
7.9
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Entertainment
7.5
Crew
8.6
Food
7.0
Boarding
8.1
Comfort
8.0
Overall
7.9
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Entertainment
7.5
Crew
8.6
Food
7.0
Boarding
8.1
Comfort
8.0
Overall
7.9
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
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 11, 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 11, 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% |