$89+ Cheap flights from Louisville (SDF) to Illinois
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/5. Fares are subject to change and may not be available on all flights or dates of travel.
SDF — ORD
Jul 12 — Jul 191
Round-trip
1 adult, Economy
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Cheapest flights from Louisville to IllinoisExplore the most affordable flight options available from Louisville to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2026.
Explore the most affordable flight options available from Louisville to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2026.
This United Airlines deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/45:50 pm
SDF
- ORD
Nonstop1h 50m
United Airlines
Tue 8/114:30 pm
ORD
- SDF
Nonstop1h 37m
United Airlines
Deal found 6/9![United Airlines logo]()
$177
This Southwest deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/261:15 pm
SDF
- MDW
Nonstop1h 15m
Southwest
Wed 8/266:20 pm
MDW
- SDF
Nonstop1h 15m
Southwest
Deal found 6/8![Southwest logo]()
$177
This United Airlines deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/199:04 am
SDF
- ORD
Nonstop1h 41m
United Airlines
Tue 10/279:30 pm
ORD
- SDF
Nonstop1h 35m
United Airlines
Deal found 6/10![United Airlines logo]()
$196
This Southwest deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/266:45 pm
SDF
- MDW
Nonstop1h 15m
Southwest
Sat 8/297:50 am
MDW
- SDF
Nonstop1h 20m
Southwest
Deal found 6/8![Southwest logo]()
$196
This Delta deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/42:34 pm
SDF
- ORD
1 stop6h 56m
Delta
Tue 8/117:00 am
ORD
- SDF
1 stop5h 51m
Delta
Deal found 6/9![Delta logo]()
$197
This United Airlines deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/187:10 am
SDF
- ORD
Nonstop1h 40m
United Airlines
Tue 9/228:30 pm
ORD
- SDF
Nonstop1h 38m
United Airlines
Deal found 6/8![United Airlines logo]()
$214
This United Airlines deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/209:00 am
SDF
- ORD
Nonstop1h 41m
United Airlines
Mon 8/249:25 pm
ORD
- SDF
Nonstop1h 34m
United Airlines
Deal found 6/10![United Airlines logo]()
$215
This Southwest deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/107:10 pm
SDF
- MDW
Nonstop1h 15m
Southwest
Mon 9/148:00 am
MDW
- SDF
Nonstop1h 25m
Southwest
Deal found 6/8![Southwest logo]()
$215
This Delta deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/1910:15 am
SDF
- ORD
1 stop3h 22m
Delta
Wed 10/288:55 am
ORD
- SDF
1 stop3h 44m
Delta
Deal found 6/10![Delta logo]()
$216
This Delta deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/87:55 am
SDF
- MDW
1 stop5h 44m
Delta
Wed 8/129:24 am
MDW
- SDF
1 stop3h 27m
Delta
Deal found 6/8![Delta logo]()
$216
This Southwest deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/27:05 am
SDF
- MDW
2 stops9h 20m
Southwest
Mon 9/78:00 am
MDW
- SDF
Nonstop1h 25m
Southwest
Deal found 6/11![Southwest logo]()
$226
This American Airlines deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/115:59 pm
SDF
- ORD
Nonstop1h 55m
American Airlines
Mon 9/147:59 pm
ORD
- SDF
Nonstop1h 34m
American Airlines
Deal found 6/9![American Airlines logo]()
$233
Best flights from Louisville to IllinoisDiscover carefully curated flight deals from Louisville to Illinois that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 12, 2026.
Discover carefully curated flight deals from Louisville to Illinois that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 12, 2026.
This Delta deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/2210:15 am
SDF
- MDW
1 stop3h 18m
Delta
Sat 10/241:00 pm
MDW
- SDF
1 stop3h 40m
Delta
Deal found 6/10![Delta logo]()
$235
This Southwest deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/45:00 pm
SDF
- MDW
Nonstop1h 15m
Southwest
Wed 7/87:45 am
MDW
- SDF
Nonstop1h 20m
Southwest
Deal found 6/11![Southwest logo]()
$276
This United Airlines deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/287:10 am
SDF
- ORD
Nonstop1h 40m
United Airlines
Sun 8/3010:35 am
ORD
- SDF
Nonstop1h 36m
United Airlines
Deal found 6/9![United Airlines logo]()
$283
This American Airlines deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/258:15 am
SDF
- MLI
2 stops11h 07m
American Airlines
Mon 6/296:00 am
MLI
- SDF
1 stop3h 35m
American Airlines
Deal found 6/10![American Airlines logo]()
$511
This Southwest deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/272:15 pm
SDF
- MDW
Nonstop1h 15m
Southwest
Sun 8/308:50 am
MDW
- SDF
2 stops7h 55m
Southwest
Deal found 6/9![Southwest logo]()
$280
This Delta deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/307:49 am
SDF
- MDW
1 stop5h 57m
Delta
Wed 7/19:17 am
MDW
- SDF
1 stop3h 22m
Delta
Deal found 6/11![Delta logo]()
$295
This Southwest deal was found by Cheapflights users on 6/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/2510:50 am
SDF
- MDW
1 stop6h 45m
Southwest
Tue 8/256:20 pm
MDW
- SDF
Nonstop1h 15m
Southwest
Deal found 6/7![Southwest logo]()
$285
This United Airlines deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/182:10 pm
SDF
- ORD
Nonstop1h 40m
United Airlines
Sun 7/195:50 pm
ORD
- SDF
Nonstop1h 33m
United Airlines
Deal found 6/8![United Airlines logo]()
$315
This United Airlines deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/79:00 am
SDF
- ORD
Nonstop1h 38m
United Airlines
Fri 7/109:25 pm
ORD
- SDF
Nonstop1h 34m
United Airlines
Deal found 6/11![United Airlines logo]()
$318
This Southwest deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/95:10 pm
SDF
- STL
1 stop5h 00m
Southwest
Fri 9/113:45 pm
STL
- SDF
1 stop3h 45m
Southwest
Deal found 6/10![Southwest logo]()
$297
This Delta deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/237:50 am
SDF
- ORD
1 stop6h 13m
Delta
Sun 7/267:05 am
ORD
- SDF
1 stop5h 37m
Delta
Deal found 6/9![Delta logo]()
$335
This United Airlines deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/610:05 am
SDF
- ORD
1 stop5h 24m
United Airlines
Mon 8/106:59 am
ORD
- SDF
Nonstop1h 27m
United Airlines
Deal found 6/11![United Airlines logo]()
$326
This Southwest deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/77:25 am
SDF
- MDW
2 stops8h 45m
Southwest
Tue 7/149:30 am
MDW
- SDF
1 stop6h 40m
Southwest
Deal found 6/8![Southwest logo]()
$301
This Delta deal was found by Cheapflights users on 6/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/107:20 am
SDF
- ORD
1 stop4h 04m
Delta
Sun 9/138:55 am
ORD
- SDF
1 stop3h 43m
Delta
Deal found 6/7![Delta logo]()
$335
This United Airlines deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/275:15 am
SDF
- ORD
Nonstop1h 40m
United Airlines
Sun 8/308:45 am
ORD
- SDF
1 stop4h 52m
United Airlines
Deal found 6/9![United Airlines logo]()
$326
This Southwest deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/137:25 pm
SDF
- MDW
Nonstop1h 15m
Southwest
Fri 9/1812:10 pm
MDW
- SDF
Nonstop1h 15m
Southwest
Deal found 6/11![Southwest logo]()
$301
This Delta deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/256:00 am
SDF
- MLI
1 stop5h 16m
Delta
Mon 6/295:17 pm
MLI
- SDF
1 stop6h 15m
Delta
Deal found 6/10![Delta logo]()
$339
This Southwest deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/57:05 am
SDF
- STL
2 stops9h 05m
Southwest
Fri 8/74:15 pm
STL
- SDF
1 stop5h 20m
Southwest
Deal found 6/9![Southwest logo]()
$302
This Delta deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/57:49 am
SDF
- ORD
1 stop4h 01m
Delta
Wed 7/811:30 am
ORD
- SDF
1 stop4h 17m
Delta
Deal found 6/11![Delta logo]()
$369
This Southwest deal was found by Cheapflights users on 6/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/215:25 pm
SDF
- MDW
1 stop4h 45m
Southwest
Fri 7/2412:45 pm
MDW
- SDF
Nonstop1h 10m
Southwest
Deal found 6/7![Southwest logo]()
$305
This United Airlines deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/86:00 am
SDF
- ORD
1 stop6h 52m
United Airlines
Wed 8/1210:35 am
ORD
- SDF
Nonstop1h 36m
United Airlines
Deal found 6/9![United Airlines logo]()
$372
This Southwest deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/310:45 am
SDF
- MDW
2 stops6h 50m
Southwest
Sat 7/1811:30 am
MDW
- SDF
Nonstop1h 10m
Southwest
Deal found 6/11![Southwest logo]()
$310
This United Airlines deal was found by Cheapflights users on 6/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/47:10 am
SDF
- ORD
Nonstop1h 40m
United Airlines
Sun 9/612:55 pm
ORD
- SDF
1 stop5h 10m
United Airlines
Deal found 6/7![United Airlines logo]()
$376
This United Airlines deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/166:00 am
SDF
- ORD
1 stop4h 36m
United Airlines
Thu 7/236:59 am
ORD
- SDF
Nonstop1h 27m
United Airlines
Deal found 6/10![United Airlines logo]()
$376
This Southwest deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/289:00 am
SDF
- MDW
Nonstop1h 15m
Southwest
Sun 8/308:50 am
MDW
- SDF
1 stop4h 20m
Southwest
Deal found 6/11![Southwest logo]()
$311
This Southwest deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/27:30 pm
SDF
- STL
1 stop3h 25m
Southwest
Sun 12/61:25 pm
STL
- SDF
2 stops7h 45m
Southwest
Deal found 6/8![Southwest logo]()
$319
This United Airlines deal was found by Cheapflights users on 6/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/47:15 am
SDF
- MLI
1 stop6h 21m
United Airlines
Wed 7/86:30 pm
MLI
- SDF
1 stop4h 29m
United Airlines
Deal found 6/7![United Airlines logo]()
$445
This Southwest deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/38:45 am
SDF
- STL
1 stop6h 25m
Southwest
Fri 7/35:20 pm
STL
- SDF
1 stop6h 05m
Southwest
Deal found 6/10![Southwest logo]()
$347
This Southwest deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/63:20 pm
SDF
- STL
1 stop4h 50m
Southwest
Mon 8/105:45 am
STL
- SDF
2 stops6h 20m
Southwest
Deal found 6/12![Southwest logo]()
$350
This Southwest deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/156:05 am
SDF
- STL
1 stop8h 00m
Southwest
Thu 7/165:00 am
STL
- SDF
1 stop5h 25m
Southwest
Deal found 6/12![Southwest logo]()
$352
Last-minute flights from Louisville to IllinoisDiscover last-minute flight deals from Louisville to Illinois. Data last updated June 12, 2026 and is based on user searches.
Discover last-minute flight deals from Louisville to Illinois. Data last updated June 12, 2026 and is based on user searches.
This Southwest deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/307:25 am
SDF
- MDW
2 stops8h 45m
Southwest
Wed 7/16:15 pm
MDW
- SDF
Nonstop1h 10m
Southwest
Deal found 6/9![Southwest logo]()
$291
This United Airlines deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/19:00 am
SDF
- ORD
Nonstop1h 38m
United Airlines
Sat 7/46:59 am
ORD
- SDF
Nonstop1h 27m
United Airlines
Deal found 6/9![United Airlines logo]()
$275
This Southwest deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/18:45 am
SDF
- MDW
Nonstop1h 15m
Southwest
Sat 7/47:50 am
MDW
- SDF
Nonstop1h 15m
Southwest
Deal found 6/9![Southwest logo]()
$275
This Delta deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/17:49 am
SDF
- ORD
1 stop6h 11m
Delta
Sat 7/41:55 pm
ORD
- SDF
1 stop6h 20m
Delta
Deal found 6/8![Delta logo]()
$295
This American Airlines deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/31:31 pm
SDF
- ORD
1 stop5h 01m
American Airlines
Fri 7/37:29 pm
ORD
- SDF
Nonstop1h 35m
American Airlines
Deal found 6/8![American Airlines logo]()
$263
This American Airlines deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/46:48 am
SDF
- ORD
Nonstop1h 47m
American Airlines
Wed 7/87:27 am
ORD
- SDF
Nonstop1h 36m
American Airlines
Deal found 6/11![American Airlines logo]()
$277
This United Airlines deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/87:55 pm
SDF
- ORD
Nonstop1h 45m
United Airlines
Wed 7/156:59 am
ORD
- SDF
Nonstop1h 27m
United Airlines
Deal found 6/10![United Airlines logo]()
$276
This Southwest deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/208:05 pm
SDF
- MDW
Nonstop1h 15m
Southwest
Wed 7/227:45 am
MDW
- SDF
Nonstop1h 20m
Southwest
Deal found 6/12![Southwest logo]()
$279
This United Airlines deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/269:00 am
SDF
- ORD
Nonstop1h 38m
United Airlines
Tue 8/46:59 am
ORD
- SDF
Nonstop1h 27m
United Airlines
Deal found 6/8![United Airlines logo]()
$246
This Southwest deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/262:30 pm
SDF
- MDW
Nonstop1h 15m
Southwest
Tue 8/46:20 pm
MDW
- SDF
Nonstop1h 15m
Southwest
Deal found 6/8![Southwest logo]()
$246
This Delta deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/267:50 am
SDF
- ORD
1 stop6h 13m
Delta
Tue 8/47:00 am
ORD
- SDF
1 stop5h 51m
Delta
Deal found 6/8![Delta logo]()
$266
This American Airlines deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/306:48 am
SDF
- ORD
Nonstop1h 47m
American Airlines
Tue 8/47:29 pm
ORD
- SDF
Nonstop1h 35m
American Airlines
Deal found 6/12![American Airlines logo]()
$292
One-way flights from Louisville to IllinoisSearch for one-way flight options from Louisville to Illinois. Find affordable one-way fares based on user searches. Data last updated June 12, 2026.
Search for one-way flight options from Louisville to Illinois. Find affordable one-way fares based on user searches. Data last updated June 12, 2026.
This American Airlines deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/56:37 am
SDF
- ORD
Nonstop1h 47m
American Airlines
Deal found 6/10![American Airlines logo]()
$89
This Southwest deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/58:45 am
SDF
- MDW
Nonstop1h 15m
Southwest
Deal found 6/10![Southwest logo]()
$89
This Delta deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/810:15 am
SDF
- ORD
1 stop3h 22m
Delta
Deal found 6/12![Delta logo]()
$99
This Delta deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/57:55 am
SDF
- MDW
1 stop5h 44m
Delta
Deal found 6/9![Delta logo]()
$99
This Southwest deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/87:15 am
SDF
- MDW
2 stops8h 10m
Southwest
Deal found 6/11![Southwest logo]()
$104
This American Airlines deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/37:03 am
SDF
- ORD
Nonstop1h 49m
American Airlines
Deal found 6/11![American Airlines logo]()
$108
This Southwest deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/67:10 pm
SDF
- MDW
Nonstop1h 15m
Southwest
Deal found 6/9![Southwest logo]()
$108
This Kiwi.com deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/109:10 pm
SDF
- ORD
1 stop16h 05m
Multiple Airlines
Deal found 6/10![Multiple Airlines logo]()
$113
This Delta deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/310:34 am
SDF
- ORD
1 stop6h 40m
Delta
Deal found 6/8![Delta logo]()
$118
This Delta deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/87:55 am
SDF
- MDW
1 stop5h 44m
Delta
Deal found 6/10![Delta logo]()
$118
This Kiwi.com deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/79:10 pm
SDF
- ORD
1 stop16h 05m
Multiple Airlines
Deal found 6/9![Multiple Airlines logo]()
$122
This Southwest deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/107:10 pm
SDF
- MDW
Nonstop1h 15m
Southwest
Deal found 6/11![Southwest logo]()
$122
Find flight deals from Louisville to Illinois
Keep the following information in mind while searching for Louisville to Illinois flight deals. Data was last updated June 12, 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 | $356 |
Good round-trip deal | $385 or less |
Good one-way deal | $203 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Louisville to Illinois that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 12, 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
Thu 10/22
10:15 am-12:33 pm
1 stop3h 18m
Chicago Midway
Sat 10/24
1:00 pm-5:40 pm
1 stop3h 40m
$235
LouisvilleChicago
SDF - MDW
SDFMDW
Louisville Intl
Sat 7/4
5:00 pm-5:15 pm
Nonstop1h 15m
Chicago Midway
Wed 7/8
7:45 am-10:05 am
Nonstop1h 20m
$276
LouisvilleChicago
SDF - MDW
SDFMDW
Louisville Intl
Thu 8/27
2:15 pm-2:30 pm
Nonstop1h 15m
Chicago Midway
Sun 8/30
8:50 am-5:45 pm
2 stops7h 55m
$280
LouisvilleChicago
SDF - ORD
SDFORD
Louisville Intl
Fri 8/28
7:10 am-7:50 am
Nonstop1h 40m
Chicago O'Hare Intl
Sun 8/30
10:35 am-1:11 pm
Nonstop1h 36m
$283
LouisvilleChicago
SDF - MDW
SDFMDW
Louisville Intl
Tue 8/25
10:50 am-4:35 pm
1 stop6h 45m
Chicago Midway
Tue 8/25
6:20 pm-8:35 pm
Nonstop1h 15m
$285
LouisvilleChicago
SDF - MDW
SDFMDW
Louisville Intl
Tue 6/30
7:49 am-12:46 pm
1 stop5h 57m
Chicago Midway
Wed 7/1
9:17 am-1:39 pm
1 stop3h 22m
$295
LouisvilleSt. Louis
SDF - STL
SDFSTL
Louisville Intl
Wed 9/9
5:10 pm-9:10 pm
1 stop5h 00m
Lambert-St Louis
Fri 9/11
3:45 pm-8:30 pm
1 stop3h 45m
$297
LouisvilleChicago
SDF - MDW
SDFMDW
Louisville Intl
Tue 7/7
7:25 am-3:10 pm
2 stops8h 45m
Chicago Midway
Tue 7/14
9:30 am-5:10 pm
1 stop6h 40m
$301
Quickest round-trip
LouisvilleChicago
SDF - MDW
SDFMDW
Louisville Intl
Sun 9/13
7:25 pm-7:40 pm
Nonstop1h 15m
Chicago Midway
Fri 9/18
12:10 pm-2:25 pm
Nonstop1h 15m
$301
LouisvilleSt. Louis
SDF - STL
SDFSTL
Louisville Intl
Wed 8/5
7:05 am-3:10 pm
2 stops9h 05m
Lambert-St Louis
Fri 8/7
4:15 pm-10:35 pm
1 stop5h 20m
$302
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Louisville to Illinois
Have a flexible travel schedule? Discover the best time to fly to Illinois from Louisville with our price prediction graph.
SDF-MDW
SDF-ORD
SDF-MLI
SDF-STL
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Louisville to Illinois
SDF-USIL
SDF-MDW
SDF-ORD
SDF-MLI
SDF-STL
What is the cheapest month to book a flight from Louisville to Illinois?
Currently, January is the cheapest month in which you can book a flight from Louisville to Illinois (average of $67). Flying from Louisville to Illinois in June is currently the most expensive (average of $246). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from SDF to IL?
Find hourly flight availability from Louisville to Illinois. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 12, 2026.
When flying from Louisville to Illinois, the time of day you fly usually plays a role in the price. Save by searching for a flight in the morning, which can drop the price by up to 32% versus a flight at noon.
Weekly flight availability from Louisville to Illinois
Explore weekly flight availability from Louisville to Illinois. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated June 12, 2026.
The most flights from SDF to USIL are scheduled on a Wednesday (40 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 June 8, 2026.
Travelers seeking maximum savings on their Louisville to Illinois flight should consider departing on Saturday afternoons when fares are most often at their lowest. Saturday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
Reviews of airlines servicing Illinois
Get insights into the airlines that provide service to Illinois. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Illinois. Reviews last updated June 12, 2026.
See what other customers who have flown with Southwest,United Airlines, andAmerican Airlines from Louisville to Illinois have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Overall
7.9
Crew
8.6
Food
7.0
Comfort
8.0
Boarding
8.1
Entertainment
7.5
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Overall
7.9
Crew
8.6
Food
7.0
Comfort
8.0
Boarding
8.1
Entertainment
7.5
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Overall
7.9
Crew
8.6
Food
7.0
Comfort
8.0
Boarding
8.1
Entertainment
7.5
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Overall
7.9
Crew
8.6
Food
7.0
Comfort
8.0
Boarding
8.1
Entertainment
7.5
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
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 June 12, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Louisville to Illinois flights
Consider these flights traveling from Louisville to Illinois.
Top 3 airlines flying from Louisville to Illinois
Discover the top 3 airlines that operate flights from Louisville to Illinois. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 12, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$77 | Average$248 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$97 | Average$276 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$137 | Average$318 | FlexibilityNo cancel fee | On-time69% |