$107+ 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 7/23. Fares are subject to change and may not be available on all flights or dates of travel.
SDF — ORD
May 30 — Jun 61
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 April 30, 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 April 30, 2026.
This Kiwi.com deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/19:10 pm
SDF
- ORD
2 stops23h 41m
Multiple Airlines
Tue 6/97:52 am
ORD
- SDF
1 stop26h 38m
Multiple Airlines
Deal found 4/26![Multiple Airlines logo]()
$224
This Kiwi.com deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/1510:33 am
SDF
- ORD
1 stop13h 42m
Multiple Airlines
Tue 5/195:05 am
ORD
- SDF
1 stop29h 29m
Multiple Airlines
Deal found 4/27![Multiple Airlines logo]()
$234
This Kiwi.com deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/2712:24 pm
SDF
- ORD
1 stop25h 13m
Multiple Airlines
Fri 5/298:05 am
ORD
- SDF
1 stop11h 15m
Multiple Airlines
Deal found 4/28![Multiple Airlines logo]()
$237
This Southwest deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/308:40 am
SDF
- MDW
Nonstop1h 20m
Southwest
Tue 6/212:50 pm
MDW
- SDF
Nonstop1h 15m
Southwest
Deal found 4/25![Southwest logo]()
$241
This Kiwi.com deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/410:33 am
SDF
- ORD
1 stop27h 04m
Multiple Airlines
Wed 6/107:52 am
ORD
- SDF
1 stop24h 36m
Multiple Airlines
Deal found 4/25![Multiple Airlines logo]()
$244
This American Airlines deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/1510:43 am
SDF
- ORD
Nonstop1h 41m
American Airlines
Sat 7/187:37 am
ORD
- SDF
Nonstop1h 36m
American Airlines
Deal found 4/25![American Airlines logo]()
$250
This American Airlines deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/167:01 pm
SDF
- ORD
Nonstop1h 48m
American Airlines
Sat 5/169:01 pm
ORD
- SDF
1 stop11h 37m
American Airlines
Deal found 4/25![American Airlines logo]()
$252
This Kiwi.com deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/1510:33 am
SDF
- ORD
1 stop14h 26m
Multiple Airlines
Wed 5/201:59 pm
ORD
- SDF
2 stops18h 29m
Multiple Airlines
Deal found 4/28![Multiple Airlines logo]()
$254
This United Airlines deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/199:10 am
SDF
- ORD
Nonstop1h 40m
United Airlines
Wed 5/209:34 pm
ORD
- SDF
Nonstop1h 25m
United Airlines
Deal found 4/28![United Airlines logo]()
$257
This Southwest deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/267:15 pm
SDF
- MDW
Nonstop1h 15m
Southwest
Tue 6/212:50 pm
MDW
- SDF
Nonstop1h 15m
Southwest
Deal found 4/28![Southwest logo]()
$257
This Southwest deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/267:15 pm
SDF
- MDW
Nonstop1h 15m
Southwest
Wed 5/273:00 pm
MDW
- SDF
1 stop5h 05m
Southwest
Deal found 4/27![Southwest logo]()
$267
This Kiwi.com deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/238:06 pm
SDF
- STL
2 stops37h 49m
Multiple Airlines
Sat 5/304:19 pm
STL
- SDF
1 stop15h 32m
Multiple Airlines
Deal found 4/25![Multiple Airlines logo]()
$269
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 April 30, 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 April 30, 2026.
This Kiwi.com deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/238:06 pm
SDF
- STL
2 stops37h 49m
Multiple Airlines
Sat 5/304:19 pm
STL
- SDF
1 stop15h 32m
Multiple Airlines
Deal found 4/25![Multiple Airlines logo]()
$269
This Southwest deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/43:35 pm
SDF
- MDW
Nonstop1h 15m
Southwest
Wed 6/107:45 am
MDW
- SDF
Nonstop1h 20m
Southwest
Deal found 4/25![Southwest logo]()
$272
This United Airlines deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/245:51 pm
SDF
- ORD
Nonstop1h 50m
United Airlines
Mon 5/257:45 pm
ORD
- SDF
Nonstop1h 29m
United Airlines
Deal found 4/27![United Airlines logo]()
$281
This Delta deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/233:29 pm
SDF
- MDW
1 stop6h 40m
Delta
Tue 5/266:23 am
MDW
- SDF
1 stop4h 45m
Delta
Deal found 4/28![Delta logo]()
$292
This American Airlines deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/187:01 pm
SDF
- STL
1 stop5h 55m
American Airlines
Fri 5/226:12 pm
STL
- SDF
1 stop5h 16m
American Airlines
Deal found 4/26![American Airlines logo]()
$363
This Delta deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/166:05 am
SDF
- ORD
2 stops7h 51m
Delta
Wed 5/2011:26 am
ORD
- SDF
1 stop4h 35m
Delta
Deal found 4/25![Delta logo]()
$297
This Southwest deal was found by Cheapflights users on 4/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/88:05 pm
SDF
- MDW
Nonstop1h 15m
Southwest
Thu 6/117:45 am
MDW
- SDF
Nonstop1h 20m
Southwest
Deal found 4/24![Southwest logo]()
$301
This United Airlines deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/115:20 am
SDF
- ORD
Nonstop1h 41m
United Airlines
Mon 6/159:24 pm
ORD
- SDF
Nonstop1h 35m
United Airlines
Deal found 4/28![United Airlines logo]()
$315
This Southwest deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/15:25 pm
SDF
- MDW
2 stops6h 20m
Southwest
Tue 6/911:25 am
MDW
- SDF
2 stops9h 15m
Southwest
Deal found 4/27![Southwest logo]()
$302
This Delta deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/246:05 am
SDF
- ORD
2 stops7h 51m
Delta
Mon 5/257:00 am
ORD
- SDF
1 stop5h 51m
Delta
Deal found 4/27![Delta logo]()
$306
This United Airlines deal was found by Cheapflights users on 4/29. 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 5/1410:06 am
SDF
- MLI
1 stop4h 48m
United Airlines
Mon 5/181:34 pm
MLI
- SDF
1 stop5h 43m
United Airlines
Deal found 4/29![United Airlines logo]()
$319
This Southwest deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/246:00 am
SDF
- MDW
1 stop9h 55m
Southwest
Mon 5/255:30 am
MDW
- SDF
1 stop5h 10m
Southwest
Deal found 4/27![Southwest logo]()
$306
This Delta deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/1012:38 pm
SDF
- MDW
1 stop6h 40m
Delta
Fri 6/129:17 am
MDW
- SDF
1 stop3h 22m
Delta
Deal found 4/26![Delta logo]()
$306
This KAYAK deal was found by Cheapflights users on 4/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/99:00 am
SDF
- ORD
Nonstop1h 38m
United Airlines
Fri 6/127:52 pm
ORD
- SDF
Nonstop1h 38m
United Airlines
Deal found 4/24![United Airlines logo]()
$337
This Southwest deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/217:25 am
SDF
- MDW
2 stops8h 45m
Southwest
Sat 7/257:40 am
MDW
- SDF
Nonstop1h 20m
Southwest
Deal found 4/27![Southwest logo]()
$310
This Delta deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/36:05 am
SDF
- ORD
2 stops7h 56m
Delta
Fri 6/57:00 am
ORD
- SDF
1 stop5h 51m
Delta
Deal found 4/28![Delta logo]()
$311
This Delta deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/106:49 am
SDF
- ORD
2 stops7h 15m
Delta
Fri 6/128:08 am
ORD
- SDF
1 stop6h 23m
Delta
Deal found 4/26![Delta logo]()
$311
This Southwest deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/88:40 am
SDF
- MDW
Nonstop1h 15m
Southwest
Sat 10/108:10 am
MDW
- SDF
Nonstop1h 25m
Southwest
Deal found 4/25![Southwest logo]()
$326
This United Airlines deal was found by Cheapflights users on 4/29. 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 5/2710:02 am
SDF
- MLI
1 stop4h 54m
United Airlines
Sat 5/3010:40 am
MLI
- SDF
1 stop5h 09m
United Airlines
Deal found 4/29![United Airlines logo]()
$359
This Delta deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/308:10 am
SDF
- STL
1 stop4h 44m
Delta
Mon 6/16:21 am
STL
- SDF
1 stop4h 38m
Delta
Deal found 4/26![Delta logo]()
$311
This Delta deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/154:47 pm
SDF
- MDW
1 stop6h 28m
Delta
Sat 7/189:19 am
MDW
- SDF
1 stop6h 28m
Delta
Deal found 4/27![Delta logo]()
$315
This Southwest deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/306:40 am
SDF
- STL
1 stop2h 45m
Southwest
Mon 6/11:45 pm
STL
- SDF
2 stops7h 00m
Southwest
Deal found 4/26![Southwest logo]()
$347
This American Airlines deal was found by Cheapflights users on 4/29. 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.
Sun 5/178:36 am
SDF
- MLI
1 stop4h 43m
American Airlines
Tue 5/1912:49 pm
MLI
- SDF
2 stops9h 41m
American Airlines
Deal found 4/29![American Airlines logo]()
$618
This Southwest deal was found by Cheapflights users on 4/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/43:00 pm
SDF
- STL
1 stop5h 10m
Southwest
Sun 6/75:50 am
STL
- SDF
1 stop3h 25m
Southwest
Deal found 4/24![Southwest logo]()
$353
This KAYAK deal was found by Cheapflights users on 4/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/206:00 am
SDF
- ORD
1 stop5h 16m
Delta
Thu 5/216:24 am
ORD
- SDF
1 stop4h 35m
Delta
Deal found 4/24![Delta logo]()
$325
This Delta deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/265:26 pm
SDF
- ORD
1 stop4h 05m
Delta
Mon 6/2911:30 am
ORD
- SDF
1 stop4h 16m
Delta
Deal found 4/25![Delta logo]()
$335
This Southwest deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/126:05 pm
SDF
- STL
1 stop5h 40m
Southwest
Mon 6/222:50 pm
STL
- SDF
1 stop7h 00m
Southwest
Deal found 4/25![Southwest logo]()
$395
This Delta deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/237:50 am
SDF
- ORD
1 stop3h 47m
Delta
Sun 7/266:30 am
ORD
- SDF
2 stops6h 12m
Delta
Deal found 4/26![Delta logo]()
$340
This Southwest deal was found by Cheapflights users on 4/29. 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 5/225:25 pm
SDF
- STL
2 stops6h 30m
Southwest
Wed 5/271:45 pm
STL
- SDF
2 stops6h 20m
Southwest
Deal found 4/29![Southwest logo]()
$396
This Delta deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/37:20 am
SDF
- ORD
1 stop6h 19m
Delta
Mon 9/71:35 pm
ORD
- SDF
2 stops9h 24m
Delta
Deal found 4/27![Delta logo]()
$340
Last-minute flights from Louisville to IllinoisDiscover last-minute flight deals from Louisville to Illinois. Data last updated April 30, 2026 and is based on user searches.
Discover last-minute flight deals from Louisville to Illinois. Data last updated April 30, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/1410:33 am
SDF
- ORD
1 stop14h 05m
Multiple Airlines
Sun 5/175:05 am
ORD
- SDF
1 stop27h 23m
Multiple Airlines
Deal found 4/28![Multiple Airlines logo]()
$271
This Kiwi.com deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/1510:33 am
SDF
- ORD
1 stop13h 42m
Multiple Airlines
Tue 5/195:05 am
ORD
- SDF
1 stop29h 29m
Multiple Airlines
Deal found 4/27![Multiple Airlines logo]()
$234
This Kiwi.com deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/1510:33 am
SDF
- ORD
1 stop14h 26m
Multiple Airlines
Wed 5/201:59 pm
ORD
- SDF
2 stops18h 29m
Multiple Airlines
Deal found 4/28![Multiple Airlines logo]()
$254
This American Airlines deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/167:01 pm
SDF
- ORD
Nonstop1h 48m
American Airlines
Sat 5/169:01 pm
ORD
- SDF
1 stop11h 37m
American Airlines
Deal found 4/25![American Airlines logo]()
$252
This United Airlines deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/199:10 am
SDF
- ORD
Nonstop1h 40m
United Airlines
Wed 5/209:34 pm
ORD
- SDF
Nonstop1h 25m
United Airlines
Deal found 4/28![United Airlines logo]()
$257
This American Airlines deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/1912:11 pm
SDF
- ORD
Nonstop1h 40m
American Airlines
Sun 5/247:40 am
ORD
- SDF
Nonstop1h 37m
American Airlines
Deal found 4/26![American Airlines logo]()
$266
This Kiwi.com deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/238:06 pm
SDF
- STL
2 stops37h 49m
Multiple Airlines
Sat 5/304:19 pm
STL
- SDF
1 stop15h 32m
Multiple Airlines
Deal found 4/25![Multiple Airlines logo]()
$269
This Southwest deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/267:15 pm
SDF
- MDW
Nonstop1h 15m
Southwest
Tue 6/212:50 pm
MDW
- SDF
Nonstop1h 15m
Southwest
Deal found 4/28![Southwest logo]()
$257
This American Airlines deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/265:00 am
SDF
- ORD
1 stop5h 02m
American Airlines
Tue 6/27:40 am
ORD
- SDF
Nonstop1h 37m
American Airlines
Deal found 4/28![American Airlines logo]()
$267
This Southwest deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/267:15 pm
SDF
- MDW
Nonstop1h 15m
Southwest
Wed 5/273:00 pm
MDW
- SDF
1 stop5h 05m
Southwest
Deal found 4/27![Southwest logo]()
$267
This Kiwi.com deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/2712:24 pm
SDF
- ORD
1 stop25h 13m
Multiple Airlines
Fri 5/298:05 am
ORD
- SDF
1 stop11h 15m
Multiple Airlines
Deal found 4/28![Multiple Airlines logo]()
$237
This Southwest deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/308:40 am
SDF
- MDW
Nonstop1h 20m
Southwest
Tue 6/212:50 pm
MDW
- SDF
Nonstop1h 15m
Southwest
Deal found 4/25![Southwest logo]()
$241
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 April 30, 2026.
Search for one-way flight options from Louisville to Illinois. Find affordable one-way fares based on user searches. Data last updated April 30, 2026.
This Kiwi.com deal was found by Cheapflights users on 4/29. 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.
Thu 7/236:50 pm
SDF
- MDW
1 stop26h 41m
Allegiant Air
Deal found 4/29![Allegiant Air logo]()
$107
This Kiwi.com deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/266:52 pm
SDF
- MDW
1 stop26h 38m
Allegiant Air
Deal found 4/28![Allegiant Air logo]()
$112
This American Airlines deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/37:07 pm
SDF
- ORD
Nonstop1h 43m
American Airlines
Deal found 4/25![American Airlines logo]()
$113
This Southwest deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/249:20 am
SDF
- MDW
Nonstop1h 15m
Southwest
Deal found 4/26![Southwest logo]()
$113
This Kiwi.com deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/229:15 pm
SDF
- ORD
1 stop16h 28m
Multiple Airlines
Deal found 4/28![Multiple Airlines logo]()
$121
This Kiwi.com deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/19:10 pm
SDF
- MDW
2 stops25h 52m
Multiple Airlines
Deal found 4/28![Multiple Airlines logo]()
$124
This Kiwi.com deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/2412:20 pm
SDF
- ORD
1 stop25h 23m
Multiple Airlines
Deal found 4/28![Multiple Airlines logo]()
$125
This Kiwi.com deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/208:48 pm
SDF
- ORD
1 stop16h 37m
Multiple Airlines
Deal found 4/25![Multiple Airlines logo]()
$126
This Kiwi.com deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/19:10 pm
SDF
- ORD
2 stops23h 41m
Multiple Airlines
Deal found 4/28![Multiple Airlines logo]()
$128
This American Airlines deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/262:46 pm
SDF
- ORD
Nonstop1h 45m
American Airlines
Deal found 4/28![American Airlines logo]()
$129
This Southwest deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/203:30 pm
SDF
- MDW
Nonstop1h 15m
Southwest
Deal found 4/27![Southwest logo]()
$129
This Kiwi.com deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/2110:33 am
SDF
- ORD
1 stop13h 42m
Spirit Airlines
Deal found 4/27![Spirit Airlines logo]()
$130
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 April 30, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $224 (Kiwi.com) |
One-way from | $107 (Kiwi.com) |
Popular in | January |
Cheapest in | November |
Average price | $349 |
Good round-trip deal | $349 or less |
Good one-way deal | $228 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 April 30, 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
LouisvilleSt. Louis
SDF - STL
SDFSTL
Louisville Intl
Sat 5/23
8:06 pm-8:55 am
2 stops37h 49m
Lambert-St Louis
Sat 5/30
4:19 pm-8:51 am
1 stop15h 32m
$269
Quickest round-trip
LouisvilleChicago
SDF - MDW
SDFMDW
Louisville Intl
Thu 6/4
3:35 pm-3:50 pm
Nonstop1h 15m
Chicago Midway
Wed 6/10
7:45 am-10:05 am
Nonstop1h 20m
$272
LouisvilleChicago
SDF - ORD
SDFORD
Louisville Intl
Sun 5/24
5:51 pm-6:41 pm
Nonstop1h 50m
Chicago O'Hare Intl
Mon 5/25
7:45 pm-10:14 pm
Nonstop1h 29m
$281
LouisvilleChicago
SDF - MDW
SDFMDW
Louisville Intl
Sat 5/23
3:29 pm-9:09 pm
1 stop6h 40m
Chicago Midway
Tue 5/26
6:23 am-12:08 pm
1 stop4h 45m
$292
LouisvilleChicago
SDF - ORD
SDFORD
Louisville Intl
Sat 5/16
6:05 am-12:56 pm
2 stops7h 51m
Chicago O'Hare Intl
Wed 5/20
11:26 am-5:01 pm
1 stop4h 35m
$297
LouisvilleChicago
SDF - MDW
SDFMDW
Louisville Intl
Mon 6/8
8:05 pm-8:20 pm
Nonstop1h 15m
Chicago Midway
Thu 6/11
7:45 am-10:05 am
Nonstop1h 20m
$301
LouisvilleChicago
SDF - MDW
SDFMDW
Louisville Intl
Mon 6/1
5:25 pm-10:45 pm
2 stops6h 20m
Chicago Midway
Tue 6/9
11:25 am-9:40 pm
2 stops9h 15m
$302
LouisvilleChicago
SDF - ORD
SDFORD
Louisville Intl
Sun 5/24
6:05 am-12:56 pm
2 stops7h 51m
Chicago O'Hare Intl
Mon 5/25
7:00 am-1:51 pm
1 stop5h 51m
$306
LouisvilleChicago
SDF - MDW
SDFMDW
Louisville Intl
Sun 5/24
6:00 am-2:55 pm
1 stop9h 55m
Chicago Midway
Mon 5/25
5:30 am-11:40 am
1 stop5h 10m
$306
LouisvilleChicago
SDF - MDW
SDFMDW
Louisville Intl
Wed 6/10
12:38 pm-6:18 pm
1 stop6h 40m
Chicago Midway
Fri 6/12
9:17 am-1:39 pm
1 stop3h 22m
$306
Showing 1-10 of 58 resultsSorted by cheapest first
Best time to book a flight from Louisville to Illinois
Have a flexible travel schedule? Discover the best time to fly to Illinois from Louisville with our price prediction graph.
SDF-ORD
SDF-MDW
SDF-STL
SDF-MLI
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Louisville to Illinois
SDF-USIL
SDF-ORD
SDF-MDW
SDF-STL
SDF-MLI
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 73 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
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 February is currently the most expensive (average of $177). 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 April 30, 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.
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 April 25, 2026.
Travelers seeking maximum savings on their Louisville to Illinois flight should consider departing on Friday 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.
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 April 30, 2026.
The most flights from SDF to USIL are scheduled on a Thursday (50 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (7 on average).
How much does it cost to fly round-trip from Louisville to Illinois?
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 April 30, 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.
Comfort
8.0
Overall
8.0
Food
7.0
Crew
8.6
Entertainment
7.5
Boarding
8.1
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Comfort
8.0
Overall
8.0
Food
7.0
Crew
8.6
Entertainment
7.5
Boarding
8.1
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Comfort
8.0
Overall
8.0
Food
7.0
Crew
8.6
Entertainment
7.5
Boarding
8.1
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Comfort
8.0
Overall
8.0
Food
7.0
Crew
8.6
Entertainment
7.5
Boarding
8.1
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
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 April 30, 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 April 30, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$97 | Average$258 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$97 | Average$230 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$122 | Average$279 | FlexibilityNo cancel fee | On-time69% |