$109+ Cheap flights from Louisville (SDF) to Illinois
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 10/20. Fares are subject to change and may not be available on all flights or dates of travel.
SDF — ORD
Oct 4 — Oct 111
Round-trip
1 adult, Economy
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Find cheap flights from Louisville to Illinois 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 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 September 4, 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 September 4, 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.
Thu 9/2410:25 am -
Nonstop1h 40m
Tue 9/299:25 pm -
Nonstop1h 34m
Deal found 9/2![United Airlines logo]()
$217
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 9/247:10 pm -
Nonstop1h 15m
Mon 9/288:00 am -
Nonstop1h 25m
Deal found 9/3![Southwest logo]()
$217
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.
Thu 9/247:11 am -
Nonstop1h 49m
Mon 9/2811:15 am -
Nonstop1h 28m
Deal found 9/1![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 10/27:00 am -
Nonstop1h 40m
Wed 10/76:55 am -
Nonstop1h 39m
Deal found 9/2![United Airlines 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.
Fri 10/93:35 pm -
Nonstop1h 15m
Mon 10/127:55 am -
Nonstop1h 15m
Deal found 9/2![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.
Tue 9/296:45 pm -
Nonstop1h 15m
Thu 10/12:15 pm -
1 stop6h 20m
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.
Thu 10/17:50 pm -
Nonstop1h 15m
Tue 10/62:45 pm -
2 stops4h 50m
Deal found 9/3![Southwest logo]()
$232
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 10/163:35 pm -
Nonstop1h 15m
Fri 10/236:55 pm -
Nonstop1h 15m
Deal found 9/1![Southwest logo]()
$235
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 10/166:29 am -
Nonstop1h 42m
Fri 10/236:59 am -
Nonstop1h 33m
Deal found 9/1![American Airlines logo]()
$236
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 11/77:55 am -
1 stop3h 34m
Thu 11/125:30 am -
1 stop5h 26m
Deal found 9/3![Delta logo]()
$237
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.
Wed 11/47:05 am -
1 stop4h 38m
Mon 11/95:13 pm -
1 stop4h 40m
Deal found 9/3![Delta logo]()
$237
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 10/107:05 am -
2 stops8h 45m
Mon 10/127:55 am -
Nonstop1h 15m
Deal found 9/3![Southwest logo]()
$238
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 September 4, 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 September 4, 2026.
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 10/123:35 pm -
Nonstop1h 15m
Wed 10/141:05 pm -
Nonstop1h 15m
Deal found 9/1![Southwest logo]()
$217
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.
Thu 11/128:05 am -
1 stop4h 54m
Sat 11/144:13 pm -
1 stop6h 00m
Deal found 9/3![Delta logo]()
$237
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.
Sat 10/3110:27 am -
Nonstop1h 45m
Sat 11/74:00 pm -
Nonstop1h 32m
Deal found 9/3![United Airlines logo]()
$287
This American Airlines deal was found by Cheapflights users on 8/30. Clicking the “Pick Dates” 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 11/256:30 pm -
Nonstop1h 59m
Sun 11/296:54 am -
Nonstop1h 34m
Deal found 8/30![American Airlines logo]()
$325
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 10/35:05 pm -
Nonstop1h 15m
Sat 10/178:05 am -
Nonstop1h 15m
Deal found 9/2![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.
Fri 9/257:10 pm -
Nonstop1h 15m
Mon 9/288:00 am -
Nonstop1h 25m
Deal found 9/2![Southwest logo]()
$226
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 10/316:00 am -
1 stop5h 37m
Sat 11/712:27 pm -
1 stop4h 32m
Deal found 9/3![Delta logo]()
$257
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 10/17:50 pm -
Nonstop1h 15m
Tue 10/67:40 am -
1 stop3h 35m
Deal found 9/3![Southwest logo]()
$227
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.
Wed 11/412:40 pm -
1 stop5h 07m
Fri 11/64:19 pm -
1 stop4h 19m
Deal found 9/3![Delta logo]()
$266
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/310:00 am -
1 stop5h 26m
Sat 10/106:50 am -
Nonstop1h 39m
Deal found 9/1![United Airlines logo]()
$313
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 10/34:35 pm -
1 stop6h 05m
Mon 10/54:30 pm -
1 stop5h 05m
Deal found 9/1![Southwest logo]()
$246
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.
Thu 9/2410:00 am -
1 stop5h 26m
Thu 10/16:55 am -
Nonstop1h 39m
Deal found 9/2![United Airlines logo]()
$313
This American Airlines deal was found by Cheapflights users on 8/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/2710:29 am -
Nonstop1h 38m
Sun 10/47:09 am -
Nonstop1h 34m
Deal found 8/30![American Airlines logo]()
$367
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 9/231:56 pm -
1 stop5h 41m
Tue 9/2910:39 am -
Nonstop1h 36m
Deal found 9/2![United Airlines logo]()
$313
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.
Thu 10/226:00 am -
1 stop4h 09m
Mon 10/265:35 pm -
1 stop5h 24m
Deal found 9/2![Delta logo]()
$315
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.
Fri 10/27:55 pm -
1 stop5h 04m
Sun 10/117:00 am -
1 stop5h 53m
Deal found 9/2![Delta logo]()
$320
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.
Fri 10/95:15 am -
Nonstop1h 41m
Sun 10/118:50 am -
1 stop4h 49m
Deal found 9/3![United Airlines logo]()
$344
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 10/55:40 pm -
1 stop6h 35m
Thu 10/85:25 am -
1 stop3h 45m
Deal found 9/1![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.
Sun 11/295:10 am -
Nonstop1h 45m
Fri 12/182:40 pm -
Nonstop1h 40m
Deal found 9/3![United Airlines logo]()
$345
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.
Thu 10/225:40 pm -
1 stop6h 35m
Mon 10/265:40 pm -
1 stop5h 35m
Deal found 9/2![Southwest logo]()
$315
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.
Thu 10/291:59 pm -
1 stop5h 16m
Sun 11/110:25 am -
1 stop5h 24m
Deal found 9/1![Delta logo]()
$360
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/197:00 am -
Nonstop1h 40m
Sat 10/248:50 am -
1 stop4h 49m
Deal found 8/31![United Airlines logo]()
$350
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.
Thu 10/15:35 am -
1 stop5h 55m
Wed 10/78:30 am -
2 stops7h 00m
Deal found 9/1![Southwest logo]()
$320
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.
Fri 10/237:05 am -
1 stop4h 13m
Sun 10/255:04 pm -
1 stop5h 55m
Deal found 9/2![Delta logo]()
$378
This United Airlines deal was found by Cheapflights users on 8/30. Clicking the “Pick Dates” 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 9/277:00 am -
Nonstop1h 40m
Sun 10/46:55 am -
Nonstop1h 30m
Deal found 8/30![United Airlines logo]()
$367
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 10/27:50 pm -
1 stop4h 25m
Tue 10/62:25 pm -
1 stop4h 50m
Deal found 9/3![Southwest logo]()
$335
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.
Sat 10/315:57 pm -
1 stop6h 02m
Wed 11/410:40 am -
1 stop5h 22m
Deal found 9/3![United Airlines logo]()
$369
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.
Sun 10/118:00 pm -
1 stop4h 55m
Tue 10/135:45 am -
1 stop6h 40m
Deal found 8/31![Southwest logo]()
$360
This KAYAK 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/186:00 am -
1 stop4h 38m
Wed 10/216:55 am -
Nonstop1h 39m
Deal found 9/3![United Airlines logo]()
$375
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/159:00 am -
1 stop4h 31m
Sat 9/192:05 pm -
1 stop4h 02m
Deal found 8/31![United Airlines logo]()
$399
Last-minute flights from Louisville to IllinoisDiscover last-minute flight deals from Louisville to Illinois. Data last updated September 4, 2026 and is based on user searches.
Discover last-minute flight deals from Louisville to Illinois. Data last updated September 4, 2026 and is based on user searches.
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.
Thu 9/2410:25 am -
Nonstop1h 40m
Mon 9/286:55 am -
Nonstop1h 39m
Deal found 9/3![United Airlines logo]()
$217
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 9/247:10 pm -
Nonstop1h 15m
Mon 9/288:00 am -
Nonstop1h 25m
Deal found 9/3![Southwest logo]()
$217
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.
Thu 9/247:11 am -
Nonstop1h 49m
Mon 9/2811:15 am -
Nonstop1h 28m
Deal found 9/1![American Airlines logo]()
$218
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.
Thu 9/247:55 am -
1 stop6h 04m
Tue 9/291:55 pm -
1 stop6h 21m
Deal found 9/2![Delta logo]()
$237
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.
Thu 9/247:55 am -
1 stop5h 44m
Sat 9/269:29 am -
1 stop6h 15m
Deal found 9/1![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.
Tue 9/296:45 pm -
Nonstop1h 15m
Thu 10/12:15 pm -
1 stop6h 20m
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.
Thu 10/17:50 pm -
Nonstop1h 15m
Tue 10/62:45 pm -
2 stops4h 50m
Deal found 9/3![Southwest logo]()
$232
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 10/29:04 am -
Nonstop1h 41m
Tue 10/65:50 pm -
Nonstop1h 41m
Deal found 9/2![United Airlines 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.
Fri 10/93:35 pm -
Nonstop1h 15m
Mon 10/127:55 am -
Nonstop1h 15m
Deal found 9/2![Southwest 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.
Sat 10/107:05 am -
2 stops8h 45m
Mon 10/127:55 am -
Nonstop1h 15m
Deal found 9/3![Southwest logo]()
$238
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 10/163:35 pm -
Nonstop1h 15m
Fri 10/236:55 pm -
Nonstop1h 15m
Deal found 9/1![Southwest logo]()
$235
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 10/166:29 am -
Nonstop1h 42m
Fri 10/236:59 am -
Nonstop1h 33m
Deal found 9/1![American Airlines logo]()
$236
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 September 4, 2026.
Search for one-way flight options from Louisville to Illinois. Find affordable one-way fares based on user searches. Data last updated September 4, 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.
Sat 10/32:47 pm -
Nonstop1h 43m
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.
Wed 9/306:45 pm -
Nonstop1h 15m
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 10/25:15 am -
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 10/27:50 pm -
Nonstop1h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/2![Southwest logo]()
$118
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 10/35:30 pm -
1 stop4h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/3![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 9/306:00 am -
1 stop4h 49m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/2![Delta logo]()
$119
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 10/217:10 am -
2 stops5h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/2![Southwest logo]()
$124
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/197:35 pm -
1 stop20h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/4![Multiple Airlines logo]()
$127
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.
Fri 10/306:00 am -
1 stop4h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/2![Delta logo]()
$128
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 10/166:15 pm -
1 stop4h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/2![Southwest 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.
Wed 9/3012:34 pm -
1 stop5h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/3![Delta logo]()
$129
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 11/77:10 am -
2 stops11h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/3![Southwest logo]()
$130
Find flight deals from Louisville to Illinois
Keep the following information in mind while searching for Louisville to Illinois flight deals. Data was last updated September 4, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $217 (United Airlines) |
One-way from | $109 (American Airlines) |
Popular in | January |
Cheapest in | December |
Average price | $369 |
Good round-trip deal | $330 or less |
Good one-way deal | $184 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 7,457,451 searches. Data last updated September 4, 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 Louisville Intl - ORD Chicago O'Hare Intl
SDFORD
Louisville Intl
Tue 10/20
10:25 am-11:05 am
Nonstop1h 40m
Chicago O'Hare Intl
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$109
Quickest round-trip
LouisvilleChicago
SDF Louisville Intl - MDW Chicago Midway
SDFMDW
Louisville Intl
Sat 11/7
9:10 am-9:25 am
Nonstop1h 15m
Chicago Midway
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$109
LouisvilleChicago
SDF Louisville Intl - ORD Chicago O'Hare Intl
SDFORD
Louisville Intl
Wed 10/21
5:15 am-5:56 am
Nonstop1h 41m
Chicago O'Hare Intl
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$109
LouisvilleChicago
SDF Louisville Intl - MDW Chicago Midway
SDFMDW
Louisville Intl
Tue 10/20
2:05 pm-2:20 pm
Nonstop1h 15m
Chicago Midway
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$109
LouisvilleChicago
SDF Louisville Intl - ORD Chicago O'Hare Intl
SDFORD
Louisville Intl
Tue 10/20
7:05 am-12:13 pm
1 stop6h 08m
Chicago O'Hare Intl
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$119
LouisvilleChicago
SDF Louisville Intl - ORD Chicago O'Hare Intl
SDFORD
Louisville Intl
Tue 12/1
10:50 am-4:17 pm
1 stop6h 27m
Chicago O'Hare Intl
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$119
LouisvilleChicago
SDF Louisville Intl - MDW Chicago Midway
SDFMDW
Louisville Intl
Wed 11/18
7:00 am-11:50 am
1 stop5h 50m
Chicago Midway
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$119
LouisvilleChicago
SDF Louisville Intl - MDW Chicago Midway
SDFMDW
Louisville Intl
Wed 9/30
10:50 am-4:35 pm
1 stop6h 45m
Chicago Midway
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$119
LouisvilleChicago
SDF Louisville Intl - MDW Chicago Midway
SDFMDW
Louisville Intl
Sat 10/17
4:35 pm-9:45 pm
1 stop6h 10m
Chicago Midway
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$119
LouisvilleChicago
SDF Louisville Intl - MDW Chicago Midway
SDFMDW
Louisville Intl
Thu 12/3
7:41 am-1:01 pm
1 stop6h 20m
Chicago Midway
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$119
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Louisville to Illinois
Have a flexible travel schedule? Discover the best time to fly to Illinois from Louisville with our price prediction graph.
SDF-MDW
SDF-ORD
SDF-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
What is the cheapest month to book a flight from Louisville to Illinois?
Currently, November is the cheapest month in which you can book a flight from Louisville to Illinois (average of $236). Flying from Louisville to Illinois in August is currently the most expensive (average of $391). 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 September 4, 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 33% versus a flight at noon.
Weekly flight availability from Louisville to Illinois
Explore weekly flight availability from Louisville to Illinois. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated September 4, 2026.
The most flights from SDF to USIL are scheduled on a Thursday (40 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (21 on average).
How much does it cost to fly round-trip from Louisville to Illinois?
Airfare is below average for this route at the moment.
Louisville to Illinois flights typically cost between $237 and $345 in September.The cheapest round-trip price found within the last 5 days was $217 on United Airlines (Sep 24-Sep 28).
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 52 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
What is the cheapest day to fly from Louisville to Illinois?
Use this chart to determine the cheapest time to fly round-trip from Louisville to Illinois. Price data was last updated on August 29, 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.
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 September 4, 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
Crew
8.6
Overall
8.0
Boarding
8.1
Comfort
8.0
Food
7.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Entertainment
7.5
Crew
8.6
Overall
8.0
Boarding
8.1
Comfort
8.0
Food
7.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Entertainment
7.5
Crew
8.6
Overall
8.0
Boarding
8.1
Comfort
8.0
Food
7.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Entertainment
7.5
Crew
8.6
Overall
8.0
Boarding
8.1
Comfort
8.0
Food
7.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
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
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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 September 4, 2026.
Popular flight searches
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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 7,457,451 searches. Data last updated September 4, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$157 | Average$362 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$171 | Average$295 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$184 | Average$315 | FlexibilityNo cancel fee | On-time63% |