$109+ Cheap flights from Illinois to Louisville (SDF)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/1. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SDF
Oct 5 — Oct 121
Round-trip
1 adult, Economy
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Find cheap flights from Illinois to Louisville with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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Cheapest flights from Illinois to LouisvilleExplore the most affordable flight options available from Illinois to Louisville. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 5, 2026.
Explore the most affordable flight options available from Illinois to Louisville. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 5, 2026.
This Southwest deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” 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 10/38:05 am -
Nonstop1h 15m
Mon 10/57:50 pm -
Nonstop1h 15m
Deal found 9/2![Southwest logo]()
$217
This American Airlines deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” 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 9/2611:15 am -
Nonstop1h 28m
Tue 9/295:59 pm -
Nonstop1h 55m
Deal found 9/2![American Airlines logo]()
$217
This American Airlines deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/17:09 am -
Nonstop1h 34m
Mon 10/55:19 pm -
Nonstop1h 55m
Deal found 9/3![American Airlines logo]()
$218
This Southwest deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” 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 10/96:55 pm -
Nonstop1h 15m
Mon 10/127:50 pm -
Nonstop1h 15m
Deal found 9/3![Southwest logo]()
$226
This American Airlines deal was found by Cheapflights users on 9/1. Clicking the “Pick Dates” 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 10/96:55 pm -
Nonstop1h 40m
Mon 10/125:19 pm -
Nonstop1h 55m
Deal found 9/1![American Airlines logo]()
$226
This Southwest deal was found by Cheapflights users on 9/1. Clicking the “Pick Dates” 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 10/27:55 am -
Nonstop1h 15m
Fri 10/97:50 pm -
Nonstop1h 15m
Deal found 9/1![Southwest logo]()
$235
This United Airlines deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” 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 10/25:50 pm -
Nonstop1h 41m
Fri 10/97:00 am -
Nonstop1h 40m
Deal found 9/2![United Airlines logo]()
$235
This Southwest deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” 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 10/27:55 am -
Nonstop1h 15m
Mon 10/55:10 pm -
1 stop5h 50m
Deal found 9/2![Southwest logo]()
$236
This Southwest deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” 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 11/215:25 am -
1 stop6h 05m
Thu 12/313:10 pm -
1 stop7h 15m
Deal found 9/3![Southwest logo]()
$237
This Delta deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” 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 9/266:40 am -
1 stop7h 18m
Tue 9/292:47 pm -
1 stop6h 43m
Deal found 9/2![Delta logo]()
$237
This Southwest deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” 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 10/142:45 pm -
2 stops4h 50m
Fri 10/167:50 pm -
Nonstop1h 15m
Deal found 9/2![Southwest logo]()
$241
This Southwest deal was found by Cheapflights users on 9/1. Clicking the “Pick Dates” 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 9/283:20 pm -
1 stop4h 15m
Tue 9/295:00 pm -
1 stop4h 50m
Deal found 9/1![Southwest logo]()
$246
Best flights from Illinois to LouisvilleDiscover carefully curated flight deals from Illinois to Louisville that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 5, 2026.
Discover carefully curated flight deals from Illinois to Louisville that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 5, 2026.
This United Airlines deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” 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 2/1710:40 am -
Nonstop1h 20m
Sat 2/206:00 pm -
Nonstop1h 36m
Deal found 9/2![United Airlines logo]()
$217
This Southwest deal was found by Cheapflights users on 9/1. Clicking the “Pick Dates” 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 10/38:05 am -
Nonstop1h 15m
Mon 10/57:50 pm -
Nonstop1h 15m
Deal found 9/1![Southwest logo]()
$217
This Delta deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” 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 2/175:30 am -
1 stop7h 19m
Sat 2/2010:15 am -
1 stop3h 22m
Deal found 9/2![Delta logo]()
$237
This American Airlines deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” 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 10/96:55 pm -
Nonstop1h 40m
Mon 10/125:19 pm -
Nonstop1h 55m
Deal found 9/4![American Airlines logo]()
$289
This Southwest deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” 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 10/141:05 pm -
Nonstop1h 15m
Fri 10/167:50 pm -
Nonstop1h 15m
Deal found 9/2![Southwest logo]()
$226
This Delta deal was found by Cheapflights users on 9/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/36:10 am -
1 stop4h 44m
Mon 10/55:50 pm -
1 stop3h 40m
Deal found 9/1![Delta logo]()
$237
This Delta deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/179:59 am -
1 stop7h 00m
Sat 10/245:33 pm -
1 stop3h 57m
Deal found 9/2![Delta logo]()
$237
This Southwest deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” 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 10/178:10 am -
2 stops7h 15m
Sat 10/247:05 am -
1 stop3h 25m
Deal found 9/2![Southwest logo]()
$242
This United Airlines deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” 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 10/175:50 pm -
Nonstop1h 41m
Sat 10/245:15 am -
Nonstop1h 41m
Deal found 9/2![United Airlines logo]()
$287
This United Airlines deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” 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 11/62:31 pm -
1 stop6h 59m
Sun 11/85:10 am -
1 stop5h 55m
Deal found 9/2![United Airlines logo]()
$299
This American Airlines deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” 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 11/2010:11 am -
Nonstop1h 32m
Sun 11/221:14 pm -
Nonstop1h 43m
Deal found 9/4![American Airlines logo]()
$345
This Southwest deal was found by Cheapflights users on 8/31. Clicking the “Pick Dates” 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 10/112:45 pm -
Nonstop1h 15m
Sat 10/35:05 pm -
Nonstop1h 15m
Deal found 8/31![Southwest logo]()
$291
This Delta deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” 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 11/215:13 pm -
1 stop5h 00m
Mon 11/236:00 am -
1 stop5h 23m
Deal found 9/2![Delta logo]()
$299
This United Airlines deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” 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 11/88:50 am -
1 stop4h 57m
Wed 11/115:10 am -
Nonstop1h 45m
Deal found 9/3![United Airlines logo]()
$313
This Delta deal was found by Cheapflights users on 8/31. Clicking the “Pick Dates” 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 11/126:49 am -
1 stop6h 26m
Thu 11/127:59 pm -
1 stop4h 55m
Deal found 8/31![Delta logo]()
$311
This Southwest deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” 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 11/67:50 am -
2 stops8h 10m
Sun 11/84:05 pm -
1 stop5h 55m
Deal found 9/3![Southwest logo]()
$315
This American Airlines deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/184:57 pm -
1 stop4h 36m
Tue 9/222:53 pm -
2 stops10h 12m
Deal found 9/3![American Airlines logo]()
$412
This Delta deal was found by Cheapflights users on 9/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/318:05 am -
1 stop5h 36m
Sun 11/17:55 am -
1 stop6h 04m
Deal found 9/1![Delta logo]()
$311
This Southwest deal was found by Cheapflights users on 8/31. Clicking the “Pick Dates” 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 10/151:00 pm -
1 stop6h 10m
Sat 10/175:05 pm -
1 stop4h 20m
Deal found 8/31![Southwest logo]()
$315
This United Airlines deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” 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 10/29:25 pm -
Nonstop1h 34m
Sun 10/46:00 am -
1 stop4h 38m
Deal found 9/4![United Airlines logo]()
$349
This Southwest deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/305:55 am -
1 stop5h 45m
Wed 10/73:55 pm -
1 stop7h 35m
Deal found 9/2![Southwest logo]()
$315
This United Airlines deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” 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 12/161:15 pm -
1 stop6h 47m
Sat 12/197:00 am -
1 stop4h 42m
Deal found 9/3![United Airlines logo]()
$360
This Southwest deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” 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 10/96:55 pm -
Nonstop1h 15m
Sun 10/118:25 pm -
Nonstop1h 15m
Deal found 9/4![Southwest logo]()
$317
This United Airlines deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” 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 1/273:45 pm -
1 stop3h 47m
Sun 1/315:57 pm -
1 stop6h 23m
Deal found 9/3![United Airlines logo]()
$369
This Southwest deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” 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 10/15:25 am -
2 stops10h 00m
Mon 10/56:15 pm -
2 stops6h 05m
Deal found 9/3![Southwest logo]()
$325
This United Airlines deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” 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 11/202:31 pm -
1 stop5h 21m
Mon 11/235:57 pm -
1 stop4h 25m
Deal found 9/2![United Airlines logo]()
$369
This Southwest deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” 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 10/22:15 pm -
1 stop6h 20m
Sun 10/43:25 pm -
Nonstop1h 15m
Deal found 9/4![Southwest logo]()
$327
This United Airlines deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” 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 11/202:31 pm -
1 stop5h 21m
Sun 11/225:57 pm -
1 stop4h 25m
Deal found 9/2![United Airlines logo]()
$369
This United Airlines deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” 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 10/22:28 pm -
1 stop5h 03m
Sun 10/45:15 am -
1 stop5h 57m
Deal found 9/2![United Airlines logo]()
$369
This Southwest deal was found by Cheapflights users on 9/1. Clicking the “Pick Dates” 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 10/235:25 am -
2 stops10h 00m
Mon 10/266:15 pm -
2 stops6h 05m
Deal found 9/1![Southwest logo]()
$346
Last-minute flights from Illinois to LouisvilleDiscover last-minute flight deals from Illinois to Louisville. Data last updated September 5, 2026 and is based on user searches.
Discover last-minute flight deals from Illinois to Louisville. Data last updated September 5, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” 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 9/2611:15 am -
Nonstop1h 28m
Tue 9/295:59 pm -
Nonstop1h 55m
Deal found 9/2![American Airlines logo]()
$217
This Delta deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” 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 9/266:40 am -
1 stop7h 18m
Tue 9/292:47 pm -
1 stop6h 43m
Deal found 9/2![Delta logo]()
$237
This American Airlines deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/17:09 am -
Nonstop1h 34m
Mon 10/55:19 pm -
Nonstop1h 55m
Deal found 9/3![American Airlines logo]()
$218
This United Airlines deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” 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 10/25:50 pm -
Nonstop1h 41m
Fri 10/97:00 am -
Nonstop1h 40m
Deal found 9/2![United Airlines logo]()
$235
This Southwest deal was found by Cheapflights users on 9/1. Clicking the “Pick Dates” 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 10/27:55 am -
Nonstop1h 15m
Fri 10/97:50 pm -
Nonstop1h 15m
Deal found 9/1![Southwest logo]()
$235
This Southwest deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” 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 10/27:55 am -
Nonstop1h 15m
Mon 10/55:10 pm -
1 stop5h 50m
Deal found 9/2![Southwest logo]()
$236
This Southwest deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” 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 10/34:15 pm -
Nonstop1h 10m
Wed 10/78:35 am -
Nonstop1h 15m
Deal found 9/3![Southwest logo]()
$217
This Southwest deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” 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 10/39:55 am -
1 stop5h 30m
Mon 10/53:35 pm -
Nonstop1h 15m
Deal found 9/2![Southwest logo]()
$227
This Southwest deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” 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 10/38:10 am -
2 stops7h 15m
Sat 10/104:35 pm -
1 stop6h 10m
Deal found 9/3![Southwest logo]()
$242
This American Airlines deal was found by Cheapflights users on 9/1. Clicking the “Pick Dates” 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 10/96:55 pm -
Nonstop1h 40m
Mon 10/125:19 pm -
Nonstop1h 55m
Deal found 9/1![American Airlines logo]()
$226
This Southwest deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” 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 10/96:55 pm -
Nonstop1h 15m
Mon 10/127:50 pm -
Nonstop1h 15m
Deal found 9/3![Southwest logo]()
$226
This Southwest deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” 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 10/142:45 pm -
2 stops4h 50m
Fri 10/167:50 pm -
Nonstop1h 15m
Deal found 9/2![Southwest logo]()
$241
One-way flights from Illinois to LouisvilleSearch for one-way flight options from Illinois to Louisville. Find affordable one-way fares based on user searches. Data last updated September 5, 2026.
Search for one-way flight options from Illinois to Louisville. Find affordable one-way fares based on user searches. Data last updated September 5, 2026.
This American Airlines deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” 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 9/237:09 am -
Nonstop1h 34m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/2![American Airlines logo]()
$109
This Southwest deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” 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 9/267:50 am -
Nonstop1h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/3![Southwest logo]()
$109
This United Airlines deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/255:50 pm -
Nonstop1h 41m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/2![United Airlines logo]()
$118
This Southwest deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” 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 9/256:10 pm -
Nonstop1h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/2![Southwest logo]()
$118
This Delta deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/36:10 am -
1 stop4h 44m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/2![Delta logo]()
$119
This Delta deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” 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 9/305:11 pm -
1 stop5h 48m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/2![Delta logo]()
$119
This Southwest deal was found by Cheapflights users on 9/1. Clicking the “Pick Dates” 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 9/2912:45 pm -
2 stops7h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/1![Southwest logo]()
$124
This Delta deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” 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 10/303:40 pm -
1 stop7h 19m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/3![Delta logo]()
$128
This Delta deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” 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 10/305:09 pm -
1 stop5h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/3![Delta logo]()
$128
This Delta deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” 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 9/265:30 am -
1 stop5h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/3![Delta logo]()
$129
This Kiwi.com deal was found by Cheapflights users on 8/31. Clicking the “Pick Dates” 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 10/266:35 pm -
2 stops38h 36m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 8/31![Multiple Airlines logo]()
$130
This Southwest deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” 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 10/28:40 pm -
1 stop11h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/3![Southwest logo]()
$133
Find flight deals from Illinois to Louisville
Keep the following information in mind while searching for Illinois to Louisville flight deals. Data was last updated September 5, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $217 (Southwest) |
One-way from | $109 (Southwest) |
Popular in | May |
Cheapest in | November |
Average price | $337 |
Good round-trip deal | $291 or less |
Good one-way deal | $144 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Illinois to Louisville 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 7,457,451 searches. Data last updated September 5, 2026.
Use the filters below to find and compare flights from Illinois to Louisville that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
ChicagoLouisville
ORD Chicago O'Hare Intl - SDF Louisville Intl
ORDSDF
Chicago O'Hare Intl
Tue 12/1
6:22 pm-9:02 pm
Nonstop1h 40m
Louisville Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$109
Quickest round-trip
ChicagoLouisville
MDW Chicago Midway - SDF Louisville Intl
MDWSDF
Chicago Midway
Mon 10/5
7:55 am-10:10 am
Nonstop1h 15m
Louisville Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$109
ChicagoLouisville
ORD Chicago O'Hare Intl - SDF Louisville Intl
ORDSDF
Chicago O'Hare Intl
Wed 9/30
9:25 pm-11:59 pm
Nonstop1h 34m
Louisville Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$109
ChicagoLouisville
ORD Chicago O'Hare Intl - SDF Louisville Intl
ORDSDF
Chicago O'Hare Intl
Thu 12/3
6:49 am-2:17 pm
1 stop6h 28m
Louisville Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$119
ChicagoLouisville
ORD Chicago O'Hare Intl - SDF Louisville Intl
ORDSDF
Chicago O'Hare Intl
Wed 12/2
6:49 am-2:17 pm
1 stop6h 28m
Louisville Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$119
ChicagoLouisville
MDW Chicago Midway - SDF Louisville Intl
MDWSDF
Chicago Midway
Wed 9/30
5:11 pm-11:59 pm
1 stop5h 48m
Louisville Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$119
ChicagoLouisville
MDW Chicago Midway - SDF Louisville Intl
MDWSDF
Chicago Midway
Tue 10/6
10:59 am-4:49 pm
1 stop4h 50m
Louisville Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$119
ChicagoLouisville
MDW Chicago Midway - SDF Louisville Intl
MDWSDF
Chicago Midway
Tue 11/3
11:39 am-4:49 pm
1 stop4h 10m
Louisville Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$119
ChicagoLouisville
MDW Chicago Midway - SDF Louisville Intl
MDWSDF
Chicago Midway
Wed 10/28
10:59 am-7:10 pm
1 stop7h 11m
Louisville Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$119
ChicagoLouisville
MDW Chicago Midway - SDF Louisville Intl
MDWSDF
Chicago Midway
Tue 12/1
11:30 am-8:35 pm
2 stops8h 05m
Louisville Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$124
Showing 1-10 of 59 resultsSorted by cheapest first
Best time to book a flight from Illinois to Louisville
Have a flexible travel schedule? Discover the best time to fly to Louisville from Illinois with our price prediction graph.
ORD-SDF
MDW-SDF
STL-SDF
MLI-SDF
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 Illinois to Louisville
USIL-SDF
ORD-SDF
MDW-SDF
STL-SDF
MLI-SDF
What is the cheapest month to book a flight from Illinois to Louisville?
Currently, December is the cheapest month in which you can book a flight from Illinois to Louisville (average of $285). Flying from Illinois to Louisville in June is currently the most expensive (average of $488). 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 IL to SDF?
Find hourly flight availability from Illinois to Louisville. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 5, 2026.
One of the essential ways to save on airfare from Illinois to Louisville is to remain as flexible as possible. Flights that are in the afternoon tend to be the most expensive. A flight at noon could potentially save you up to 15% on airfare.
Weekly flight availability from Illinois to Louisville
Explore weekly flight availability from Illinois to Louisville. 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 September 5, 2026.
The most flights from USIL to SDF are scheduled on a Thursday (35 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (16 on average).
How much does it cost to fly round-trip from Illinois to Louisville?
Airfare is below average for this route at the moment.
Illinois to Louisville flights typically cost between $277 and $497 in September.The cheapest round-trip price found within the last 5 days was $217 on American Airlines (Sep 26-Sep 29).
How far ahead should I book a flight from Illinois to Louisville?
Booking 81 days in advance of your planned departure date is, on average, the best time to get cheap flights from Illinois to Louisville. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
What is the cheapest day to fly from Illinois to Louisville?
Use this chart to determine the cheapest time to fly round-trip from Illinois to Louisville. Price data was last updated on August 29, 2026.
Travelers seeking maximum savings on their Illinois to Louisville flight should consider departing on Saturday at noon when fares are most often at their lowest. Monday evenings flights should be avoided if possible as fares are typically the most expensive at this time.
Related info for your journey
Find useful and relevant information for your journey from Illinois to Louisville. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near Louisville?
Book flights to Louisville if you plan to visit one of these locationsCorydon
Shepherdsville
Elizabethtown
Jeffersonville
Browse thousands of different options on Cheapflights for your next trip
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Alternative routes for Illinois to Louisville
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Complete your trip
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Search flights from Illinois to Louisville by cabin class
Find flights from Illinois to Louisville, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Other flights to Louisville
Explore flights to Louisville departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on September 5, 2026.
Illinois and Louisville flights
Browse other Illinois and Louisville flight options. Last updated on September 5, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Illinois to Louisville flights
Consider these flights traveling from Illinois to Louisville.
Top 3 airlines flying from Illinois to Louisville
Discover the top 3 airlines that operate flights from Illinois to Louisville. 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 7,457,451 searches. Data last updated September 5, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$129 | Average$390 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$143 | Average$434 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$194 | Average$352 | FlexibilityNo cancel fee | On-time71% |