$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 5/20. Fares are subject to change and may not be available on all flights or dates of travel.
SDF — ORD
May 23 — May 301
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 23, 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 23, 2026.
This American Airlines deal was found by Cheapflights users on 4/22. 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 5/1211:16 am
SDF
- ORD
Nonstop1h 40m
American Airlines
Tue 5/196:57 pm
ORD
- SDF
Nonstop1h 33m
American Airlines
Deal found 4/22![American Airlines logo]()
$177
This Southwest deal was found by Cheapflights users on 4/20. 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
Wed 5/277:40 am
MDW
- SDF
Nonstop1h 10m
Southwest
Deal found 4/20![Southwest logo]()
$177
This Southwest deal was found by Cheapflights users on 4/19. 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 5/198:55 am
SDF
- MDW
Nonstop1h 20m
Southwest
Tue 5/2612:50 pm
MDW
- SDF
Nonstop1h 15m
Southwest
Deal found 4/19![Southwest logo]()
$178
This Kiwi.com deal was found by Cheapflights users on 4/19. 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 5/810:33 am
SDF
- ORD
1 stop14h 26m
Multiple Airlines
Sun 5/103:44 pm
ORD
- SDF
1 stop16h 44m
Multiple Airlines
Deal found 4/19![Multiple Airlines logo]()
$191
This Delta deal was found by Cheapflights users on 4/22. 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 5/1210:39 am
SDF
- ORD
1 stop3h 22m
Delta
Tue 5/125:41 pm
ORD
- SDF
1 stop5h 11m
Delta
Deal found 4/22![Delta logo]()
$197
This Delta deal was found by Cheapflights users on 4/22. 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 5/127:50 am
SDF
- MDW
1 stop5h 52m
Delta
Tue 5/125:10 pm
MDW
- SDF
1 stop6h 15m
Delta
Deal found 4/22![Delta logo]()
$197
This Delta deal was found by Cheapflights users on 4/22. 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 5/121:05 pm
SDF
- ORD
1 stop6h 36m
Delta
Tue 5/199:25 am
ORD
- SDF
2 stops11h 26m
Delta
Deal found 4/22![Delta logo]()
$202
This Delta deal was found by Cheapflights users on 4/22. 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 5/127:08 am
SDF
- MDW
1 stop5h 48m
Delta
Tue 5/199:22 am
MDW
- SDF
2 stops9h 28m
Delta
Deal found 4/22![Delta logo]()
$202
This Delta deal was found by Cheapflights users on 4/20. 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 5/206:00 am
SDF
- MDW
2 stops7h 42m
Delta
Wed 5/271:22 pm
MDW
- SDF
2 stops7h 29m
Delta
Deal found 4/20![Delta logo]()
$208
This Southwest deal was found by Cheapflights users on 4/20. 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 5/207:00 am
SDF
- ORD
1 stop6h 50m
Southwest
Wed 5/272:40 pm
ORD
- SDF
1 stop5h 25m
Southwest
Deal found 4/20![Southwest logo]()
$209
This United Airlines deal was found by Cheapflights users on 4/21. 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 5/202:45 pm
SDF
- ORD
Nonstop1h 41m
United Airlines
Sat 5/239:20 pm
ORD
- SDF
Nonstop1h 29m
United Airlines
Deal found 4/21![United Airlines logo]()
$210
This Southwest deal was found by Cheapflights users on 4/21. 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 5/234:50 pm
SDF
- MDW
Nonstop1h 20m
Southwest
Tue 5/267:40 am
MDW
- SDF
Nonstop1h 10m
Southwest
Deal found 4/21![Southwest logo]()
$210
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 23, 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 23, 2026.
This Southwest deal was found by Cheapflights users on 4/19. 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 5/197:15 pm
SDF
- MDW
Nonstop1h 15m
Southwest
Tue 5/2610:15 am
MDW
- SDF
2 stops9h 50m
Southwest
Deal found 4/19![Southwest logo]()
$193
This Delta deal was found by Cheapflights users on 4/23. 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.
Wed 6/34:28 pm
SDF
- ORD
1 stop5h 52m
Delta
Sat 6/63:47 pm
ORD
- SDF
1 stop7h 05m
Delta
Deal found 4/23![Delta logo]()
$230
This United Airlines deal was found by Cheapflights users on 4/20. 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 5/209:10 am
SDF
- STL
1 stop4h 37m
United Airlines
Mon 5/257:22 am
STL
- SDF
1 stop5h 13m
United Airlines
Deal found 4/20![United Airlines logo]()
$256
This American Airlines deal was found by Cheapflights users on 4/20. 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 5/57:01 pm
SDF
- MLI
1 stop5h 53m
American Airlines
Sat 5/95:15 am
MLI
- SDF
2 stops9h 23m
American Airlines
Deal found 4/20![American Airlines logo]()
$324
This Southwest deal was found by Cheapflights users on 4/19. 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 5/197:00 am
SDF
- ORD
1 stop6h 50m
Southwest
Tue 5/262:40 pm
ORD
- SDF
1 stop5h 25m
Southwest
Deal found 4/19![Southwest logo]()
$215
This Delta deal was found by Cheapflights users on 4/23. 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.
Sat 5/233:29 pm
SDF
- ORD
1 stop5h 55m
Delta
Tue 5/2611:09 am
ORD
- SDF
1 stop5h 03m
Delta
Deal found 4/23![Delta logo]()
$230
This Delta deal was found by Cheapflights users on 4/22. 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 5/117:59 pm
SDF
- ORD
1 stop5h 00m
Delta
Tue 5/196:24 am
ORD
- SDF
1 stop4h 35m
Delta
Deal found 4/22![Delta logo]()
$230
This Southwest deal was found by Cheapflights users on 4/22. 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 5/118:10 pm
SDF
- MDW
Nonstop1h 15m
Southwest
Tue 5/1912:50 pm
MDW
- SDF
Nonstop1h 15m
Southwest
Deal found 4/22![Southwest logo]()
$235
This Delta deal was found by Cheapflights users on 4/23. 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.
Wed 8/266:00 am
SDF
- ORD
1 stop7h 08m
Delta
Fri 8/288:15 am
ORD
- SDF
1 stop4h 33m
Delta
Deal found 4/23![Delta logo]()
$234
This Southwest deal was found by Cheapflights users on 4/23. 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.
Wed 6/104:15 pm
SDF
- MDW
Nonstop1h 15m
Southwest
Mon 6/157:45 am
MDW
- SDF
Nonstop1h 20m
Southwest
Deal found 4/23![Southwest logo]()
$246
This Delta deal was found by Cheapflights users on 4/23. 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.
Wed 6/31:00 pm
SDF
- MDW
2 stops6h 33m
Delta
Sat 6/66:23 am
MDW
- SDF
1 stop7h 19m
Delta
Deal found 4/23![Delta logo]()
$235
This Southwest deal was found by Cheapflights users on 4/23. 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.
Wed 6/108:45 am
SDF
- MDW
Nonstop1h 15m
Southwest
Fri 6/127:45 pm
MDW
- SDF
Nonstop1h 10m
Southwest
Deal found 4/23![Southwest logo]()
$246
This Delta deal was found by Cheapflights users on 4/23. 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.
Sat 5/235:47 pm
SDF
- MDW
1 stop4h 22m
Delta
Tue 5/261:22 pm
MDW
- SDF
2 stops10h 03m
Delta
Deal found 4/23![Delta logo]()
$235
This Southwest deal was found by Cheapflights users on 4/23. 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.
Wed 8/267:05 am
SDF
- MDW
2 stops9h 20m
Southwest
Fri 8/2812:30 pm
MDW
- SDF
1 stop5h 00m
Southwest
Deal found 4/23![Southwest logo]()
$257
This United Airlines deal was found by Cheapflights users on 4/21. 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 8/119:00 am
SDF
- MLI
1 stop5h 54m
United Airlines
Sat 8/153:44 pm
MLI
- SDF
1 stop5h 38m
United Airlines
Deal found 4/21![United Airlines logo]()
$379
This American Airlines deal was found by Cheapflights users on 4/19. 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 5/222:36 pm
SDF
- STL
1 stop6h 54m
American Airlines
Sun 5/246:00 am
STL
- SDF
2 stops7h 52m
American Airlines
Deal found 4/19![American Airlines logo]()
$380
This Delta deal was found by Cheapflights users on 4/21. 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 5/275:47 pm
SDF
- STL
1 stop7h 12m
Delta
Mon 6/15:20 pm
STL
- SDF
1 stop6h 05m
Delta
Deal found 4/21![Delta logo]()
$256
This Southwest deal was found by Cheapflights users on 4/22. 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 5/148:10 pm
SDF
- MDW
Nonstop1h 15m
Southwest
Mon 5/186:45 pm
MDW
- SDF
Nonstop1h 15m
Southwest
Deal found 4/22![Southwest logo]()
$260
This United Airlines deal was found by Cheapflights users on 4/21. 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 5/610:06 am
SDF
- MLI
1 stop4h 48m
United Airlines
Sun 5/1010:39 am
MLI
- SDF
1 stop3h 30m
United Airlines
Deal found 4/21![United Airlines logo]()
$389
This United Airlines deal was found by Cheapflights users on 4/23. 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 5/87:48 pm
SDF
- MLI
1 stop3h 46m
United Airlines
Tue 5/123:47 pm
MLI
- SDF
1 stop5h 43m
United Airlines
Deal found 4/23![United Airlines logo]()
$389
This Delta deal was found by Cheapflights users on 4/23. 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.
Wed 6/107:05 am
SDF
- ORD
1 stop6h 31m
Delta
Mon 6/155:30 am
ORD
- SDF
1 stop5h 23m
Delta
Deal found 4/23![Delta logo]()
$266
This Southwest deal was found by Cheapflights users on 4/20. 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 5/197:00 am
SDF
- ORD
1 stop6h 50m
Southwest
Sat 5/231:55 pm
ORD
- SDF
1 stop5h 55m
Southwest
Deal found 4/20![Southwest logo]()
$270
This Southwest deal was found by Cheapflights users on 4/20. 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 6/48:05 pm
SDF
- MDW
Nonstop1h 15m
Southwest
Thu 6/115:20 pm
MDW
- SDF
1 stop6h 05m
Southwest
Deal found 4/20![Southwest logo]()
$290
This Delta deal was found by Cheapflights users on 4/19. 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 5/127:08 am
SDF
- MDW
1 stop5h 48m
Delta
Tue 5/196:23 am
MDW
- SDF
1 stop4h 45m
Delta
Deal found 4/19![Delta logo]()
$291
This Southwest deal was found by Cheapflights users on 4/23. 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 6/65:05 pm
SDF
- MDW
1 stop7h 10m
Southwest
Sun 6/78:00 am
MDW
- SDF
Nonstop1h 15m
Southwest
Deal found 4/23![Southwest logo]()
$295
This Southwest deal was found by Cheapflights users on 4/20. 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 6/95:25 pm
SDF
- STL
2 stops7h 15m
Southwest
Fri 6/124:35 pm
STL
- SDF
2 stops6h 50m
Southwest
Deal found 4/20![Southwest logo]()
$325
This Delta deal was found by Cheapflights users on 4/19. 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 5/227:49 pm
SDF
- STL
1 stop4h 32m
Delta
Sun 5/247:05 pm
STL
- SDF
1 stop3h 54m
Delta
Deal found 4/19![Delta logo]()
$375
This Southwest deal was found by Cheapflights users on 4/20. 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 5/205:50 pm
SDF
- STL
1 stop5h 45m
Southwest
Mon 5/251:45 pm
STL
- SDF
2 stops7h 00m
Southwest
Deal found 4/20![Southwest logo]()
$341
This Southwest deal was found by Cheapflights users on 4/20. 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 5/188:10 pm
SDF
- STL
1 stop3h 35m
Southwest
Mon 5/257:35 am
STL
- SDF
1 stop3h 05m
Southwest
Deal found 4/20![Southwest logo]()
$359
This Southwest deal was found by Cheapflights users on 4/20. 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 8/156:45 am
SDF
- STL
2 stops7h 00m
Southwest
Mon 8/175:45 am
STL
- SDF
2 stops6h 20m
Southwest
Deal found 4/20![Southwest logo]()
$362
Last-minute flights from Louisville to IllinoisDiscover last-minute flight deals from Louisville to Illinois. Data last updated April 23, 2026 and is based on user searches.
Discover last-minute flight deals from Louisville to Illinois. Data last updated April 23, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 4/19. 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 5/810:33 am
SDF
- ORD
1 stop14h 26m
Multiple Airlines
Sun 5/103:44 pm
ORD
- SDF
1 stop16h 44m
Multiple Airlines
Deal found 4/19![Multiple Airlines logo]()
$191
This American Airlines deal was found by Cheapflights users on 4/22. 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 5/1211:16 am
SDF
- ORD
Nonstop1h 40m
American Airlines
Tue 5/196:57 pm
ORD
- SDF
Nonstop1h 33m
American Airlines
Deal found 4/22![American Airlines logo]()
$177
This Delta deal was found by Cheapflights users on 4/22. 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 5/1210:39 am
SDF
- ORD
1 stop3h 22m
Delta
Tue 5/125:41 pm
ORD
- SDF
1 stop5h 11m
Delta
Deal found 4/22![Delta logo]()
$197
This Delta deal was found by Cheapflights users on 4/22. 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 5/127:50 am
SDF
- MDW
1 stop5h 52m
Delta
Tue 5/125:10 pm
MDW
- SDF
1 stop6h 15m
Delta
Deal found 4/22![Delta logo]()
$197
This Delta deal was found by Cheapflights users on 4/22. 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 5/121:05 pm
SDF
- ORD
1 stop6h 36m
Delta
Tue 5/199:25 am
ORD
- SDF
2 stops11h 26m
Delta
Deal found 4/22![Delta logo]()
$202
This Delta deal was found by Cheapflights users on 4/22. 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 5/127:08 am
SDF
- MDW
1 stop5h 48m
Delta
Tue 5/199:22 am
MDW
- SDF
2 stops9h 28m
Delta
Deal found 4/22![Delta logo]()
$202
This Southwest deal was found by Cheapflights users on 4/19. 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 5/198:55 am
SDF
- MDW
Nonstop1h 20m
Southwest
Tue 5/2612:50 pm
MDW
- SDF
Nonstop1h 15m
Southwest
Deal found 4/19![Southwest logo]()
$178
This Southwest deal was found by Cheapflights users on 4/20. 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
Wed 5/277:40 am
MDW
- SDF
Nonstop1h 10m
Southwest
Deal found 4/20![Southwest logo]()
$177
This Delta deal was found by Cheapflights users on 4/20. 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 5/206:00 am
SDF
- MDW
2 stops7h 42m
Delta
Wed 5/271:22 pm
MDW
- SDF
2 stops7h 29m
Delta
Deal found 4/20![Delta logo]()
$208
This Southwest deal was found by Cheapflights users on 4/20. 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 5/207:00 am
SDF
- ORD
1 stop6h 50m
Southwest
Wed 5/272:40 pm
ORD
- SDF
1 stop5h 25m
Southwest
Deal found 4/20![Southwest logo]()
$209
This United Airlines deal was found by Cheapflights users on 4/21. 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 5/202:45 pm
SDF
- ORD
Nonstop1h 41m
United Airlines
Sat 5/239:20 pm
ORD
- SDF
Nonstop1h 29m
United Airlines
Deal found 4/21![United Airlines logo]()
$210
This Southwest deal was found by Cheapflights users on 4/21. 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 5/234:50 pm
SDF
- MDW
Nonstop1h 20m
Southwest
Tue 5/267:40 am
MDW
- SDF
Nonstop1h 10m
Southwest
Deal found 4/21![Southwest logo]()
$210
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 23, 2026.
Search for one-way flight options from Louisville to Illinois. Find affordable one-way fares based on user searches. Data last updated April 23, 2026.
This United Airlines deal was found by Cheapflights users on 4/21. 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 5/207:15 am
SDF
- ORD
Nonstop1h 40m
United Airlines
Deal found 4/21![United Airlines logo]()
$89
This Southwest deal was found by Cheapflights users on 4/20. 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 5/208:55 am
SDF
- MDW
Nonstop1h 20m
Southwest
Deal found 4/20![Southwest logo]()
$89
This Kiwi.com deal was found by Cheapflights users on 4/20. 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 5/810:33 am
SDF
- ORD
1 stop14h 26m
Multiple Airlines
Deal found 4/20![Multiple Airlines logo]()
$98
This Delta deal was found by Cheapflights users on 4/20. 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 5/207:50 am
SDF
- ORD
1 stop3h 39m
Delta
Deal found 4/20![Delta logo]()
$99
This Delta deal was found by Cheapflights users on 4/20. 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 5/206:00 am
SDF
- MDW
1 stop5h 00m
Delta
Deal found 4/20![Delta logo]()
$99
This Kiwi.com deal was found by Cheapflights users on 4/20. 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 stop27h 04m
Multiple Airlines
Deal found 4/20![Multiple Airlines logo]()
$106
This Kiwi.com deal was found by Cheapflights users on 4/21. 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
- MDW
2 stops27h 14m
Multiple Airlines
Deal found 4/21![Multiple Airlines logo]()
$114
This Kiwi.com deal was found by Cheapflights users on 4/19. 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 stop22h 49m
Spirit Airlines
Deal found 4/19![Spirit Airlines logo]()
$117
This Kiwi.com deal was found by Cheapflights users on 4/21. 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
2 stops25h 03m
Multiple Airlines
Deal found 4/21![Multiple Airlines logo]()
$118
This Kiwi.com deal was found by Cheapflights users on 4/19. 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 7/196:52 pm
SDF
- MDW
1 stop26h 38m
Allegiant Air
Deal found 4/19![Allegiant Air logo]()
$120
This Kiwi.com deal was found by Cheapflights users on 4/23. 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 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 4/23![Multiple Airlines logo]()
$121
This United Airlines deal was found by Cheapflights users on 4/20. 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 6/47:10 am
SDF
- ORD
Nonstop1h 41m
United Airlines
Deal found 4/20![United Airlines 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 April 23, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $177 (American Airlines) |
One-way from | $89 (United Airlines) |
Popular in | January |
Cheapest in | November |
Average price | $332 |
Good round-trip deal | $387 or less |
Good one-way deal | $219 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 23, 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
Tue 5/19
7:15 pm-7:30 pm
Nonstop1h 15m
Chicago Midway
Tue 5/26
10:15 am-9:05 pm
2 stops9h 50m
$193
LouisvilleChicago
SDF - ORD
SDFORD
Louisville Intl
Tue 5/19
7:00 am-12:50 pm
1 stop6h 50m
Chicago O'Hare Intl
Tue 5/26
2:40 pm-9:05 pm
1 stop5h 25m
$215
LouisvilleChicago
SDF - ORD
SDFORD
Louisville Intl
Wed 6/3
4:28 pm-9:20 pm
1 stop5h 52m
Chicago O'Hare Intl
Sat 6/6
3:47 pm-11:52 pm
1 stop7h 05m
$230
LouisvilleChicago
SDF - ORD
SDFORD
Louisville Intl
Sat 5/23
3:29 pm-8:24 pm
1 stop5h 55m
Chicago O'Hare Intl
Tue 5/26
11:09 am-5:12 pm
1 stop5h 03m
$230
LouisvilleChicago
SDF - ORD
SDFORD
Louisville Intl
Mon 5/11
7:59 pm-11:59 pm
1 stop5h 00m
Chicago O'Hare Intl
Tue 5/19
6:24 am-11:59 am
1 stop4h 35m
$230
LouisvilleChicago
SDF - ORD
SDFORD
Louisville Intl
Wed 8/26
6:00 am-12:08 pm
1 stop7h 08m
Chicago O'Hare Intl
Fri 8/28
8:15 am-1:48 pm
1 stop4h 33m
$234
LouisvilleChicago
SDF - MDW
SDFMDW
Louisville Intl
Mon 5/11
8:10 pm-8:25 pm
Nonstop1h 15m
Chicago Midway
Tue 5/19
12:50 pm-3:05 pm
Nonstop1h 15m
$235
LouisvilleChicago
SDF - MDW
SDFMDW
Louisville Intl
Wed 6/3
1:00 pm-6:33 pm
2 stops6h 33m
Chicago Midway
Sat 6/6
6:23 am-2:42 pm
1 stop7h 19m
$235
LouisvilleChicago
SDF - MDW
SDFMDW
Louisville Intl
Sat 5/23
5:47 pm-9:09 pm
1 stop4h 22m
Chicago Midway
Tue 5/26
1:22 pm-12:25 am
2 stops10h 03m
$235
LouisvilleChicago
SDF - MDW
SDFMDW
Louisville Intl
Wed 6/10
4:15 pm-4:30 pm
Nonstop1h 15m
Chicago Midway
Mon 6/15
7:45 am-10:05 am
Nonstop1h 20m
$246
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-MDW
SDF-ORD
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-MDW
SDF-ORD
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 23, 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 18, 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 23, 2026.
The most flights from SDF to USIL are scheduled on a Monday (46 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (28 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 23, 2026.
See what other customers who have flown with Southwest,United Airlines, andAmerican Airlines from Louisville to Illinois have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Food
7.0
Crew
8.6
Overall
8.0
Entertainment
7.5
Boarding
8.1
Comfort
8.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Food
7.0
Crew
8.6
Overall
8.0
Entertainment
7.5
Boarding
8.1
Comfort
8.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Food
7.0
Crew
8.6
Overall
8.0
Entertainment
7.5
Boarding
8.1
Comfort
8.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Food
7.0
Crew
8.6
Overall
8.0
Entertainment
7.5
Boarding
8.1
Comfort
8.0
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 April 23, 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 23, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$77 | Average$225 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$97 | Average$253 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$114 | Average$273 | FlexibilityNo cancel fee | On-time69% |