$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 5/5. Fares are subject to change and may not be available on all flights or dates of travel.
SDF — ORD
Apr 27 — May 41
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 March 28, 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 March 28, 2026.
This United Airlines deal was found by Cheapflights users on 3/24. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/219:07 am
SDF
- ORD
Nonstop1h 40m
United Airlines
Tue 4/286:45 am
ORD
- SDF
Nonstop1h 25m
United Airlines
Deal found 3/24![United Airlines logo]()
$177
This Southwest deal was found by Cheapflights users on 3/24. 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.
Tue 4/213:30 pm
SDF
- MDW
Nonstop1h 15m
Southwest
Tue 4/287:40 am
MDW
- SDF
Nonstop1h 10m
Southwest
Deal found 3/24![Southwest logo]()
$177
This Delta deal was found by Cheapflights users on 3/24. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/2111:12 am
SDF
- ORD
1 stop6h 30m
Delta
Tue 4/288:52 am
ORD
- SDF
1 stop4h 38m
Delta
Deal found 3/24![Delta logo]()
$197
This Southwest deal was found by Cheapflights users on 3/24. 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.
Tue 4/147:00 am
SDF
- ORD
1 stop6h 50m
Southwest
Wed 4/152:40 pm
ORD
- SDF
1 stop5h 25m
Southwest
Deal found 3/24![Southwest logo]()
$202
This United Airlines deal was found by Cheapflights users on 3/26. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/1810:07 am
SDF
- ORD
Nonstop1h 40m
United Airlines
Wed 4/229:30 pm
ORD
- SDF
Nonstop1h 29m
United Airlines
Deal found 3/26![United Airlines logo]()
$210
This Kiwi.com deal was found by Cheapflights users on 3/27. 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 4/247:48 pm
SDF
- ORD
1 stop26h 29m
Multiple Airlines
Fri 5/15:05 am
ORD
- SDF
1 stop12h 53m
Multiple Airlines
Deal found 3/27![Multiple Airlines logo]()
$211
This Southwest deal was found by Cheapflights users on 3/25. 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.
Wed 5/67:15 pm
SDF
- MDW
Nonstop1h 15m
Southwest
Thu 5/76:45 pm
MDW
- SDF
Nonstop1h 15m
Southwest
Deal found 3/25![Southwest logo]()
$211
This Kiwi.com deal was found by Cheapflights users on 3/27. 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.
Mon 4/137:48 pm
SDF
- ORD
1 stop26h 29m
Multiple Airlines
Thu 4/161:27 pm
ORD
- SDF
1 stop28h 31m
Multiple Airlines
Deal found 3/27![Multiple Airlines logo]()
$212
This American Airlines deal was found by Cheapflights users on 3/26. 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.
Sat 4/186:31 am
SDF
- ORD
1 stop7h 05m
American Airlines
Wed 4/229:16 pm
ORD
- SDF
Nonstop1h 32m
American Airlines
Deal found 3/26![American Airlines logo]()
$220
This American Airlines deal was found by Cheapflights users on 3/24. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/208:36 am
SDF
- ORD
Nonstop1h 45m
American Airlines
Sat 5/231:19 pm
ORD
- SDF
1 stop4h 30m
American Airlines
Deal found 3/24![American Airlines logo]()
$221
This Kiwi.com deal was found by Cheapflights users on 3/27. 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 5/87:48 pm
SDF
- ORD
1 stop28h 27m
Multiple Airlines
Sun 5/173:05 pm
ORD
- SDF
1 stop26h 53m
Multiple Airlines
Deal found 3/27![Multiple Airlines logo]()
$223
This Southwest deal was found by Cheapflights users on 3/26. 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 4/188:40 am
SDF
- MDW
Nonstop1h 20m
Southwest
Wed 4/226:20 pm
MDW
- SDF
Nonstop1h 15m
Southwest
Deal found 3/26![Southwest logo]()
$224
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 March 28, 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 March 28, 2026.
This Southwest deal was found by Cheapflights users on 3/24. 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.
Tue 4/147:00 am
SDF
- ORD
1 stop6h 50m
Southwest
Wed 4/152:40 pm
ORD
- SDF
1 stop5h 25m
Southwest
Deal found 3/24![Southwest logo]()
$202
This United Airlines deal was found by Cheapflights users on 3/24. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/1810:07 am
SDF
- ORD
Nonstop1h 40m
United Airlines
Tue 4/215:45 pm
ORD
- SDF
Nonstop1h 31m
United Airlines
Deal found 3/24![United Airlines logo]()
$210
This Delta deal was found by Cheapflights users on 3/24. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/183:37 pm
SDF
- ORD
1 stop5h 49m
Delta
Tue 5/199:25 am
ORD
- SDF
1 stop3h 26m
Delta
Deal found 3/24![Delta logo]()
$230
This American Airlines deal was found by Cheapflights users on 3/26. 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.
Sat 4/256:31 am
SDF
- MLI
2 stops6h 50m
American Airlines
Sat 5/212:52 pm
MLI
- SDF
1 stop7h 36m
American Airlines
Deal found 3/26![American Airlines logo]()
$314
This Southwest deal was found by Cheapflights users on 3/26. 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.
Tue 4/143:30 pm
SDF
- MDW
Nonstop1h 15m
Southwest
Wed 4/227:40 am
MDW
- SDF
Nonstop1h 10m
Southwest
Deal found 3/26![Southwest logo]()
$228
This Delta deal was found by Cheapflights users on 3/25. 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.
Wed 5/67:05 am
SDF
- ORD
2 stops10h 13m
Delta
Thu 5/77:00 am
ORD
- SDF
1 stop5h 51m
Delta
Deal found 3/25![Delta logo]()
$235
This Southwest deal was found by Cheapflights users on 3/25. 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.
Wed 4/227:15 pm
SDF
- STL
1 stop3h 55m
Southwest
Wed 4/295:35 am
STL
- SDF
1 stop3h 15m
Southwest
Deal found 3/25![Southwest logo]()
$233
This Delta deal was found by Cheapflights users on 3/24. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/234:28 pm
SDF
- ORD
1 stop5h 52m
Delta
Wed 5/2711:09 am
ORD
- SDF
2 stops9h 42m
Delta
Deal found 3/24![Delta logo]()
$235
This United Airlines deal was found by Cheapflights users on 3/23. 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 4/249:07 am
SDF
- ORD
Nonstop1h 40m
United Airlines
Sat 4/252:10 pm
ORD
- SDF
Nonstop1h 31m
United Airlines
Deal found 3/23![United Airlines logo]()
$264
This Southwest deal was found by Cheapflights users on 3/24. 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.
Wed 4/154:40 pm
SDF
- STL
2 stops6h 30m
Southwest
Wed 4/221:15 pm
STL
- SDF
2 stops6h 50m
Southwest
Deal found 3/24![Southwest logo]()
$243
This United Airlines deal was found by Cheapflights users on 3/28. 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.
Sat 4/255:00 am
SDF
- ORD
Nonstop1h 40m
United Airlines
Sat 5/211:40 am
ORD
- SDF
Nonstop1h 27m
United Airlines
Deal found 3/28![United Airlines logo]()
$271
This Delta deal was found by Cheapflights users on 3/26. 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.
Tue 4/147:56 am
SDF
- ORD
1 stop5h 49m
Delta
Wed 4/228:52 am
ORD
- SDF
1 stop4h 38m
Delta
Deal found 3/26![Delta logo]()
$247
This American Airlines deal was found by Cheapflights users on 3/27. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/116:07 am
SDF
- MLI
1 stop6h 27m
American Airlines
Wed 4/1512:51 pm
MLI
- SDF
2 stops8h 17m
American Airlines
Deal found 3/27![American Airlines logo]()
$324
This Southwest deal was found by Cheapflights users on 3/23. 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 6/14:45 pm
SDF
- MDW
1 stop6h 35m
Southwest
Mon 6/812:45 pm
MDW
- SDF
Nonstop1h 10m
Southwest
Deal found 3/23![Southwest logo]()
$254
This United Airlines deal was found by Cheapflights users on 3/25. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/167:15 am
SDF
- ORD
Nonstop1h 40m
United Airlines
Tue 5/199:25 pm
ORD
- SDF
Nonstop1h 31m
United Airlines
Deal found 3/25![United Airlines logo]()
$280
This Delta deal was found by Cheapflights users on 3/25. 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.
Wed 5/275:52 pm
SDF
- STL
1 stop4h 17m
Delta
Mon 6/17:01 pm
STL
- SDF
1 stop4h 24m
Delta
Deal found 3/25![Delta logo]()
$256
This Southwest deal was found by Cheapflights users on 3/26. 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 4/254:50 pm
SDF
- MDW
Nonstop1h 20m
Southwest
Sat 5/29:10 am
MDW
- SDF
1 stop6h 05m
Southwest
Deal found 3/26![Southwest logo]()
$254
This Delta deal was found by Cheapflights users on 3/26. 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 4/309:38 am
SDF
- ORD
1 stop4h 36m
Delta
Sat 5/21:29 pm
ORD
- SDF
2 stops8h 19m
Delta
Deal found 3/26![Delta logo]()
$268
This United Airlines deal was found by Cheapflights users on 3/25. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/125:40 am
SDF
- STL
1 stop3h 59m
United Airlines
Wed 5/137:09 pm
STL
- SDF
1 stop3h 47m
United Airlines
Deal found 3/25![United Airlines logo]()
$303
This Southwest deal was found by Cheapflights users on 3/24. 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.
Sat 5/94:50 pm
SDF
- MDW
Nonstop1h 20m
Southwest
Sat 5/166:10 am
MDW
- SDF
1 stop5h 45m
Southwest
Deal found 3/24![Southwest logo]()
$254
This Delta deal was found by Cheapflights users on 3/24. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/175:52 pm
SDF
- ORD
1 stop3h 22m
Delta
Tue 5/197:00 am
ORD
- SDF
2 stops9h 01m
Delta
Deal found 3/24![Delta logo]()
$271
This United Airlines deal was found by Cheapflights users on 3/27. 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.
Sat 5/25:52 pm
SDF
- STL
1 stop5h 53m
United Airlines
Tue 5/57:45 am
STL
- SDF
1 stop6h 09m
United Airlines
Deal found 3/27![United Airlines logo]()
$345
This Delta deal was found by Cheapflights users on 3/23. 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 5/110:46 am
SDF
- ORD
1 stop6h 32m
Delta
Sat 5/27:00 am
ORD
- SDF
2 stops10h 45m
Delta
Deal found 3/23![Delta logo]()
$289
This Southwest deal was found by Cheapflights users on 3/23. 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 4/258:40 am
SDF
- MDW
Nonstop1h 20m
Southwest
Sun 4/264:45 pm
MDW
- SDF
1 stop4h 45m
Southwest
Deal found 3/23![Southwest logo]()
$290
This Southwest deal was found by Cheapflights users on 3/28. 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.
Fri 5/152:40 pm
SDF
- MDW
Nonstop1h 15m
Southwest
Tue 5/1912:50 pm
MDW
- SDF
Nonstop1h 15m
Southwest
Deal found 3/28![Southwest logo]()
$293
This Delta deal was found by Cheapflights users on 3/26. 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 4/255:54 pm
SDF
- MLI
1 stop5h 41m
Delta
Sat 5/25:11 pm
MLI
- SDF
1 stop5h 48m
Delta
Deal found 3/26![Delta logo]()
$309
This United Airlines deal was found by Cheapflights users on 3/26. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/1010:00 am
SDF
- MLI
1 stop5h 09m
United Airlines
Tue 4/143:20 pm
MLI
- SDF
1 stop6h 10m
United Airlines
Deal found 3/26![United Airlines logo]()
$389
This American Airlines deal was found by Cheapflights users on 3/26. 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 4/147:01 pm
SDF
- MLI
1 stop5h 53m
American Airlines
Thu 4/1612:51 pm
MLI
- SDF
2 stops8h 17m
American Airlines
Deal found 3/26![American Airlines logo]()
$579
This United Airlines deal was found by Cheapflights users on 3/25. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/107:20 am
SDF
- MLI
1 stop3h 38m
United Airlines
Mon 4/137:34 pm
MLI
- SDF
1 stop3h 25m
United Airlines
Deal found 3/25![United Airlines logo]()
$389
This Southwest deal was found by Cheapflights users on 3/24. 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.
Tue 4/213:30 pm
SDF
- STL
2 stops7h 30m
Southwest
Thu 4/235:00 am
STL
- SDF
2 stops9h 00m
Southwest
Deal found 3/24![Southwest logo]()
$324
Last-minute flights from Louisville to IllinoisDiscover last-minute flight deals from Louisville to Illinois. Data last updated March 28, 2026 and is based on user searches.
Discover last-minute flight deals from Louisville to Illinois. Data last updated March 28, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 3/27. 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.
Mon 4/137:48 pm
SDF
- ORD
1 stop26h 29m
Multiple Airlines
Thu 4/161:27 pm
ORD
- SDF
1 stop28h 31m
Multiple Airlines
Deal found 3/27![Multiple Airlines logo]()
$212
This Southwest deal was found by Cheapflights users on 3/24. 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.
Tue 4/147:00 am
SDF
- ORD
1 stop6h 50m
Southwest
Wed 4/152:40 pm
ORD
- SDF
1 stop5h 25m
Southwest
Deal found 3/24![Southwest logo]()
$202
This Southwest deal was found by Cheapflights users on 3/26. 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.
Tue 4/143:30 pm
SDF
- MDW
Nonstop1h 15m
Southwest
Wed 4/227:40 am
MDW
- SDF
Nonstop1h 10m
Southwest
Deal found 3/26![Southwest logo]()
$228
This United Airlines deal was found by Cheapflights users on 3/26. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/1810:07 am
SDF
- ORD
Nonstop1h 40m
United Airlines
Wed 4/229:30 pm
ORD
- SDF
Nonstop1h 29m
United Airlines
Deal found 3/26![United Airlines logo]()
$210
This American Airlines deal was found by Cheapflights users on 3/26. 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.
Sat 4/186:31 am
SDF
- ORD
1 stop7h 05m
American Airlines
Wed 4/229:16 pm
ORD
- SDF
Nonstop1h 32m
American Airlines
Deal found 3/26![American Airlines logo]()
$220
This Southwest deal was found by Cheapflights users on 3/26. 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 4/188:40 am
SDF
- MDW
Nonstop1h 20m
Southwest
Wed 4/226:20 pm
MDW
- SDF
Nonstop1h 15m
Southwest
Deal found 3/26![Southwest logo]()
$224
This Delta deal was found by Cheapflights users on 3/26. 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 4/186:08 pm
SDF
- ORD
1 stop3h 32m
Delta
Wed 4/228:52 am
ORD
- SDF
1 stop4h 38m
Delta
Deal found 3/26![Delta logo]()
$230
This Delta deal was found by Cheapflights users on 3/26. 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 4/186:00 am
SDF
- MDW
1 stop4h 56m
Delta
Wed 4/229:27 am
MDW
- SDF
1 stop4h 03m
Delta
Deal found 3/26![Delta logo]()
$230
This United Airlines deal was found by Cheapflights users on 3/24. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/219:07 am
SDF
- ORD
Nonstop1h 40m
United Airlines
Tue 4/286:45 am
ORD
- SDF
Nonstop1h 25m
United Airlines
Deal found 3/24![United Airlines logo]()
$177
This Southwest deal was found by Cheapflights users on 3/24. 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.
Tue 4/213:30 pm
SDF
- MDW
Nonstop1h 15m
Southwest
Tue 4/287:40 am
MDW
- SDF
Nonstop1h 10m
Southwest
Deal found 3/24![Southwest logo]()
$177
This Delta deal was found by Cheapflights users on 3/24. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/2111:12 am
SDF
- ORD
1 stop6h 30m
Delta
Tue 4/288:52 am
ORD
- SDF
1 stop4h 38m
Delta
Deal found 3/24![Delta logo]()
$197
This Kiwi.com deal was found by Cheapflights users on 3/27. 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 4/247:48 pm
SDF
- ORD
1 stop26h 29m
Multiple Airlines
Fri 5/15:05 am
ORD
- SDF
1 stop12h 53m
Multiple Airlines
Deal found 3/27![Multiple Airlines logo]()
$211
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 March 28, 2026.
Search for one-way flight options from Louisville to Illinois. Find affordable one-way fares based on user searches. Data last updated March 28, 2026.
This American Airlines deal was found by Cheapflights users on 3/25. 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 4/1512:11 pm
SDF
- ORD
Nonstop1h 40m
American Airlines
Deal found 3/25![American Airlines logo]()
$89
This Southwest deal was found by Cheapflights users on 3/24. 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.
Tue 5/53:30 pm
SDF
- MDW
Nonstop1h 15m
Southwest
Deal found 3/24![Southwest logo]()
$89
This Kiwi.com deal was found by Cheapflights users on 3/26. 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 4/137:48 pm
SDF
- ORD
1 stop26h 29m
Multiple Airlines
Deal found 3/26![Multiple Airlines logo]()
$94
This Kiwi.com deal was found by Cheapflights users on 3/25. 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.
Fri 4/247:48 pm
SDF
- ORD
1 stop26h 29m
Multiple Airlines
Deal found 3/25![Multiple Airlines logo]()
$98
This Delta deal was found by Cheapflights users on 3/26. 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.
Tue 5/267:50 am
SDF
- MDW
1 stop5h 52m
Delta
Deal found 3/26![Delta logo]()
$99
This Kiwi.com deal was found by Cheapflights users on 3/27. 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.
Mon 4/276:06 pm
SDF
- ORD
1 stop28h 11m
Multiple Airlines
Deal found 3/27![Multiple Airlines logo]()
$101
This Delta deal was found by Cheapflights users on 3/25. 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.
Wed 4/226:00 am
SDF
- ORD
2 stops7h 45m
Delta
Deal found 3/25![Delta logo]()
$104
This Delta deal was found by Cheapflights users on 3/25. 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.
Wed 4/226:00 am
SDF
- MDW
2 stops7h 43m
Delta
Deal found 3/25![Delta logo]()
$104
This Kiwi.com deal was found by Cheapflights users on 3/24. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/187:48 pm
SDF
- ORD
1 stop29h 39m
Multiple Airlines
Deal found 3/24![Multiple Airlines logo]()
$113
This Delta deal was found by Cheapflights users on 3/24. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/159:38 am
SDF
- STL
1 stop6h 54m
Delta
Deal found 3/24![Delta logo]()
$117
This Kiwi.com deal was found by Cheapflights users on 3/25. 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.
Fri 4/247:48 pm
SDF
- MDW
2 stops23h 49m
Multiple Airlines
Deal found 3/25![Multiple Airlines logo]()
$118
This Kiwi.com deal was found by Cheapflights users on 3/25. 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 4/276:06 pm
SDF
- MDW
2 stops26h 25m
Multiple Airlines
Deal found 3/25![Multiple Airlines logo]()
$121
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 March 28, 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 | $286 |
Good round-trip deal | $374 or less |
Good one-way deal | $175 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 March 28, 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
Tue 4/14
7:00 am-12:50 pm
1 stop6h 50m
Chicago O'Hare Intl
Wed 4/15
2:40 pm-9:05 pm
1 stop5h 25m
$202
LouisvilleChicago
SDF - ORD
SDFORD
Louisville Intl
Sat 4/18
10:07 am-10:47 am
Nonstop1h 40m
Chicago O'Hare Intl
Tue 4/21
5:45 pm-8:16 pm
Nonstop1h 31m
$210
Quickest round-trip
LouisvilleChicago
SDF - MDW
SDFMDW
Louisville Intl
Tue 4/14
3:30 pm-3:45 pm
Nonstop1h 15m
Chicago Midway
Wed 4/22
7:40 am-9:50 am
Nonstop1h 10m
$228
LouisvilleChicago
SDF - ORD
SDFORD
Louisville Intl
Mon 5/18
3:37 pm-8:26 pm
1 stop5h 49m
Chicago O'Hare Intl
Tue 5/19
9:25 am-1:51 pm
1 stop3h 26m
$230
LouisvilleSt. Louis
SDF - STL
SDFSTL
Louisville Intl
Wed 4/22
7:15 pm-10:10 pm
1 stop3h 55m
Lambert-St Louis
Wed 4/29
5:35 am-9:50 am
1 stop3h 15m
$233
LouisvilleChicago
SDF - ORD
SDFORD
Louisville Intl
Wed 5/6
7:05 am-4:18 pm
2 stops10h 13m
Chicago O'Hare Intl
Thu 5/7
7:00 am-1:51 pm
1 stop5h 51m
$235
LouisvilleChicago
SDF - ORD
SDFORD
Louisville Intl
Sat 5/23
4:28 pm-9:20 pm
1 stop5h 52m
Chicago O'Hare Intl
Wed 5/27
11:09 am-9:51 pm
2 stops9h 42m
$235
LouisvilleSt. Louis
SDF - STL
SDFSTL
Louisville Intl
Wed 4/15
4:40 pm-10:10 pm
2 stops6h 30m
Lambert-St Louis
Wed 4/22
1:15 pm-9:05 pm
2 stops6h 50m
$243
LouisvilleChicago
SDF - ORD
SDFORD
Louisville Intl
Tue 4/14
7:56 am-12:45 pm
1 stop5h 49m
Chicago O'Hare Intl
Wed 4/22
8:52 am-2:30 pm
1 stop4h 38m
$247
LouisvilleChicago
SDF - MDW
SDFMDW
Louisville Intl
Mon 6/1
4:45 pm-10:20 pm
1 stop6h 35m
Chicago Midway
Mon 6/8
12:45 pm-2:55 pm
Nonstop1h 10m
$254
Showing 1-10 of 59 resultsSorted by cheapest first
Best time to book a flight from Louisville to Illinois
Have a flexible travel schedule? Discover the best time to fly to Illinois from Louisville with our price prediction graph.
SDF-ORD
SDF-MDW
SDF-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, April is the cheapest month in which you can book a flight from Louisville to Illinois (average of $58). Flying from Louisville to Illinois in March is currently the most expensive (average of $164). 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 March 28, 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.
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 March 28, 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 March 28, 2026.
The most flights from SDF to USIL are scheduled on a Saturday (32 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (10 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 March 28, 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
Boarding
8.1
Overall
8.0
Comfort
8.0
Food
7.0
Crew
8.6
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Entertainment
7.5
Boarding
8.1
Overall
8.0
Comfort
8.0
Food
7.0
Crew
8.6
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Entertainment
7.5
Boarding
8.1
Overall
8.0
Comfort
8.0
Food
7.0
Crew
8.6
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Entertainment
7.5
Boarding
8.1
Overall
8.0
Comfort
8.0
Food
7.0
Crew
8.6
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
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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 March 28, 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 March 28, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$97 | Average$250 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$97 | Average$247 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$114 | Average$270 | FlexibilityNo cancel fee | On-time69% |