$74+ 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 2/21. Fares are subject to change and may not be available on all flights or dates of travel.
SDF — ORD
Mar 2 — Mar 91
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 January 31, 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 January 31, 2026.
This United Airlines deal was found by Cheapflights users on 1/30. 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.
Tue 2/249:00 am
SDF
- ORD
Nonstop1h 44m
United Airlines
Wed 2/252:53 pm
ORD
- SDF
Nonstop1h 26m
United Airlines
Deal found 1/30![United Airlines logo]()
$177
This Southwest deal was found by Cheapflights users on 1/30. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/1711:50 am
SDF
- MDW
Nonstop1h 15m
Southwest
Wed 3/188:10 am
MDW
- SDF
Nonstop1h 20m
Southwest
Deal found 1/30![Southwest logo]()
$177
This American Airlines deal was found by Cheapflights users on 1/30. 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.
Thu 4/3011:19 am
SDF
- ORD
Nonstop1h 34m
American Airlines
Sat 5/28:55 pm
ORD
- SDF
Nonstop1h 32m
American Airlines
Deal found 1/30![American Airlines logo]()
$181
This Southwest deal was found by Cheapflights users on 1/30. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/188:55 am
SDF
- MDW
Nonstop1h 20m
Southwest
Wed 3/258:10 am
MDW
- SDF
Nonstop1h 20m
Southwest
Deal found 1/30![Southwest logo]()
$184
This American Airlines deal was found by Cheapflights users on 1/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/217:30 am
SDF
- ORD
Nonstop1h 42m
American Airlines
Sat 3/288:30 am
ORD
- SDF
Nonstop1h 30m
American Airlines
Deal found 1/28![American Airlines logo]()
$191
This United Airlines deal was found by Cheapflights users on 1/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/510:25 am
SDF
- ORD
Nonstop1h 39m
United Airlines
Thu 5/77:06 am
ORD
- SDF
Nonstop1h 35m
United Airlines
Deal found 1/28![United Airlines logo]()
$196
This Southwest deal was found by Cheapflights users on 1/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/53:30 pm
SDF
- MDW
Nonstop1h 15m
Southwest
Thu 5/712:45 pm
MDW
- SDF
Nonstop1h 15m
Southwest
Deal found 1/28![Southwest logo]()
$196
This Delta deal was found by Cheapflights users on 1/30. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/107:45 am
SDF
- ORD
1 stop6h 32m
Delta
Tue 3/177:10 am
ORD
- SDF
1 stop5h 50m
Delta
Deal found 1/30![Delta logo]()
$197
This Delta deal was found by Cheapflights users on 1/30. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/177:45 am
SDF
- MDW
1 stop5h 44m
Delta
Wed 3/189:35 am
MDW
- SDF
2 stops8h 14m
Delta
Deal found 1/30![Delta logo]()
$202
This American Airlines deal was found by Cheapflights users on 1/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/1212:14 pm
SDF
- ORD
Nonstop1h 34m
American Airlines
Sat 3/148:30 am
ORD
- SDF
Nonstop1h 30m
American Airlines
Deal found 1/29![American Airlines logo]()
$203
This Southwest deal was found by Cheapflights users on 1/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/147:20 am
SDF
- MDW
Nonstop1h 20m
Southwest
Mon 3/167:40 pm
MDW
- SDF
Nonstop1h 15m
Southwest
Deal found 1/29![Southwest logo]()
$203
This American Airlines deal was found by Cheapflights users on 1/30. 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.
Sat 3/1411:59 am
SDF
- ORD
Nonstop1h 41m
American Airlines
Mon 3/168:50 pm
ORD
- SDF
Nonstop1h 30m
American Airlines
Deal found 1/30![American Airlines logo]()
$204
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 January 31, 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 January 31, 2026.
This United Airlines deal was found by Cheapflights users on 1/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/245:54 pm
SDF
- ORD
Nonstop1h 55m
United Airlines
Wed 2/255:45 pm
ORD
- SDF
Nonstop1h 24m
United Airlines
Deal found 1/28![United Airlines logo]()
$177
This Southwest deal was found by Cheapflights users on 1/30. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/1711:50 am
SDF
- MDW
Nonstop1h 15m
Southwest
Wed 3/188:10 am
MDW
- SDF
Nonstop1h 20m
Southwest
Deal found 1/30![Southwest logo]()
$177
This Delta deal was found by Cheapflights users on 1/30. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/177:45 am
SDF
- MDW
1 stop5h 44m
Delta
Wed 3/189:35 am
MDW
- SDF
2 stops8h 14m
Delta
Deal found 1/30![Delta logo]()
$202
This American Airlines deal was found by Cheapflights users on 1/30. 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.
Thu 4/306:21 pm
SDF
- ORD
1 stop6h 32m
American Airlines
Sat 5/26:56 pm
ORD
- SDF
Nonstop1h 32m
American Airlines
Deal found 1/30![American Airlines logo]()
$211
This Kiwi.com deal was found by Cheapflights users on 1/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/181:19 pm
SDF
- STL
1 stop10h 08m
Multiple Airlines
Mon 2/238:22 pm
STL
- SDF
2 stops17h 16m
Multiple Airlines
Deal found 1/29![Multiple Airlines logo]()
$311
This Southwest deal was found by Cheapflights users on 1/30. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/188:55 am
SDF
- MDW
Nonstop1h 20m
Southwest
Wed 3/255:30 pm
MDW
- SDF
1 stop3h 45m
Southwest
Deal found 1/30![Southwest logo]()
$187
This Southwest deal was found by Cheapflights users on 1/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/53:30 pm
SDF
- MDW
Nonstop1h 15m
Southwest
Thu 5/712:45 pm
MDW
- SDF
Nonstop1h 15m
Southwest
Deal found 1/28![Southwest logo]()
$196
This Delta deal was found by Cheapflights users on 1/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/147:45 am
SDF
- ORD
1 stop6h 39m
Delta
Mon 3/167:10 am
ORD
- SDF
1 stop5h 27m
Delta
Deal found 1/29![Delta logo]()
$225
This Southwest deal was found by Cheapflights users on 1/30. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/186:35 am
SDF
- ORD
1 stop7h 15m
Southwest
Wed 3/252:40 pm
ORD
- SDF
1 stop6h 35m
Southwest
Deal found 1/30![Southwest logo]()
$202
This American Airlines deal was found by Cheapflights users on 1/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/148:00 pm
SDF
- ORD
1 stop4h 58m
American Airlines
Mon 3/168:50 pm
ORD
- SDF
Nonstop1h 30m
American Airlines
Deal found 1/29![American Airlines logo]()
$245
This United Airlines deal was found by Cheapflights users on 1/30. 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.
Tue 2/245:54 pm
SDF
- STL
1 stop4h 11m
United Airlines
Wed 2/257:41 am
STL
- SDF
1 stop4h 42m
United Airlines
Deal found 1/30![United Airlines logo]()
$255
This Delta deal was found by Cheapflights users on 1/30. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/306:00 am
SDF
- ORD
1 stop5h 09m
Delta
Sat 5/28:15 am
ORD
- SDF
1 stop5h 16m
Delta
Deal found 1/30![Delta logo]()
$235
This Southwest deal was found by Cheapflights users on 1/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/128:05 pm
SDF
- MDW
Nonstop1h 15m
Southwest
Sat 3/147:45 am
MDW
- SDF
Nonstop1h 15m
Southwest
Deal found 1/29![Southwest logo]()
$203
This Delta deal was found by Cheapflights users on 1/30. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/246:07 pm
SDF
- ORD
1 stop3h 33m
Delta
Tue 4/287:00 am
ORD
- SDF
1 stop6h 30m
Delta
Deal found 1/30![Delta logo]()
$236
This American Airlines deal was found by Cheapflights users on 1/30. 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.
Tue 2/245:30 am
SDF
- STL
2 stops9h 13m
American Airlines
Wed 2/255:52 pm
STL
- SDF
1 stop4h 13m
American Airlines
Deal found 1/30![American Airlines logo]()
$260
This Southwest deal was found by Cheapflights users on 1/30. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/147:55 pm
SDF
- MDW
Nonstop1h 15m
Southwest
Mon 3/167:40 pm
MDW
- SDF
Nonstop1h 15m
Southwest
Deal found 1/30![Southwest logo]()
$203
This American Airlines deal was found by Cheapflights users on 1/30. 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.
Sat 2/149:32 am
SDF
- MLI
2 stops10h 00m
American Airlines
Wed 2/182:02 pm
MLI
- SDF
1 stop6h 24m
American Airlines
Deal found 1/30![American Airlines logo]()
$264
This United Airlines deal was found by Cheapflights users on 1/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/149:00 am
SDF
- MLI
1 stop3h 46m
United Airlines
Wed 2/185:22 pm
MLI
- SDF
1 stop3h 51m
United Airlines
Deal found 1/28![United Airlines logo]()
$314
This American Airlines deal was found by Cheapflights users on 1/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/47:09 am
SDF
- STL
1 stop3h 54m
American Airlines
Fri 3/66:57 pm
STL
- SDF
1 stop4h 30m
American Airlines
Deal found 1/28![American Airlines logo]()
$305
This Delta deal was found by Cheapflights users on 1/30. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/188:05 am
SDF
- STL
1 stop4h 04m
Delta
Mon 3/231:39 pm
STL
- SDF
1 stop6h 36m
Delta
Deal found 1/30![Delta logo]()
$320
This KAYAK deal was found by Cheapflights users on 1/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/175:54 pm
SDF
- MLI
1 stop4h 33m
United Airlines
Thu 2/195:22 pm
MLI
- SDF
1 stop3h 51m
United Airlines
Deal found 1/29![United Airlines logo]()
$372
This Southwest deal was found by Cheapflights users on 1/30. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/246:45 am
SDF
- STL
2 stops7h 00m
Southwest
Wed 2/258:15 am
STL
- SDF
2 stops7h 35m
Southwest
Deal found 1/30![Southwest logo]()
$292
This American Airlines deal was found by Cheapflights users on 1/30. 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.
Tue 3/107:30 am
SDF
- STL
1 stop17h 14m
American Airlines
Fri 3/136:57 pm
STL
- SDF
1 stop4h 30m
American Airlines
Deal found 1/30![American Airlines logo]()
$331
This Delta deal was found by Cheapflights users on 1/30. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/186:00 am
SDF
- STL
1 stop6h 09m
Delta
Sun 3/226:29 am
STL
- SDF
1 stop4h 22m
Delta
Deal found 1/30![Delta logo]()
$332
This Delta deal was found by Cheapflights users on 1/30. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/187:05 am
SDF
- STL
1 stop5h 04m
Delta
Sat 3/215:29 pm
STL
- SDF
1 stop4h 40m
Delta
Deal found 1/30![Delta logo]()
$332
This Southwest deal was found by Cheapflights users on 1/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/45:35 am
SDF
- STL
2 stops8h 10m
Southwest
Fri 3/64:55 pm
STL
- SDF
2 stops6h 45m
Southwest
Deal found 1/28![Southwest logo]()
$335
This Delta deal was found by Cheapflights users on 1/30. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/2012:34 pm
SDF
- STL
1 stop5h 31m
Delta
Mon 3/231:39 pm
STL
- SDF
1 stop6h 36m
Delta
Deal found 1/30![Delta logo]()
$343
This KAYAK deal was found by Cheapflights users on 1/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/176:12 pm
SDF
- MLI
1 stop6h 25m
American Airlines
Fri 2/201:30 pm
MLI
- SDF
2 stops9h 57m
American Airlines
Deal found 1/29![American Airlines logo]()
$384
This Delta deal was found by Cheapflights users on 1/30. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/196:00 am
SDF
- STL
1 stop4h 05m
Delta
Mon 3/236:32 am
STL
- SDF
1 stop6h 05m
Delta
Deal found 1/30![Delta logo]()
$343
This KAYAK deal was found by Cheapflights users on 1/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/176:38 pm
SDF
- MLI
1 stop5h 50m
American Airlines
Thu 2/191:30 pm
MLI
- SDF
2 stops8h 13m
American Airlines
Deal found 1/29![American Airlines logo]()
$384
Last-minute flights from Louisville to IllinoisDiscover last-minute flight deals from Louisville to Illinois. Data last updated January 31, 2026 and is based on user searches.
Discover last-minute flight deals from Louisville to Illinois. Data last updated January 31, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 1/30. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/96:54 pm
SDF
- ORD
1 stop29h 53m
Multiple Airlines
Tue 2/176:02 pm
ORD
- SDF
2 stops42h 24m
Multiple Airlines
Deal found 1/30![Multiple Airlines logo]()
$268
This Delta deal was found by Cheapflights users on 1/30. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/1412:12 pm
SDF
- MLI
1 stop5h 04m
Delta
Wed 2/185:01 pm
MLI
- SDF
1 stop5h 57m
Delta
Deal found 1/30![Delta logo]()
$259
This American Airlines deal was found by Cheapflights users on 1/30. 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.
Sat 2/149:32 am
SDF
- MLI
2 stops10h 00m
American Airlines
Wed 2/182:02 pm
MLI
- SDF
1 stop6h 24m
American Airlines
Deal found 1/30![American Airlines logo]()
$264
This Kiwi.com deal was found by Cheapflights users on 1/30. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/1412:00 pm
SDF
- ORD
1 stop10h 13m
Multiple Airlines
Wed 2/186:02 pm
ORD
- SDF
2 stops37h 38m
Multiple Airlines
Deal found 1/30![Multiple Airlines logo]()
$265
This United Airlines deal was found by Cheapflights users on 1/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/245:54 pm
SDF
- ORD
Nonstop1h 55m
United Airlines
Wed 2/255:45 pm
ORD
- SDF
Nonstop1h 24m
United Airlines
Deal found 1/28![United Airlines logo]()
$177
This United Airlines deal was found by Cheapflights users on 1/30. 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.
Tue 2/245:54 pm
SDF
- STL
1 stop4h 11m
United Airlines
Wed 2/257:41 am
STL
- SDF
1 stop4h 42m
United Airlines
Deal found 1/30![United Airlines logo]()
$255
This American Airlines deal was found by Cheapflights users on 1/30. 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.
Tue 2/245:30 am
SDF
- STL
2 stops9h 13m
American Airlines
Wed 2/255:52 pm
STL
- SDF
1 stop4h 13m
American Airlines
Deal found 1/30![American Airlines logo]()
$260
This American Airlines deal was found by Cheapflights users on 1/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/266:10 am
SDF
- ORD
Nonstop1h 42m
American Airlines
Thu 3/58:51 pm
ORD
- SDF
Nonstop1h 25m
American Airlines
Deal found 1/29![American Airlines logo]()
$215
This Southwest deal was found by Cheapflights users on 1/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/265:30 am
SDF
- MDW
2 stops8h 50m
Southwest
Thu 3/57:40 pm
MDW
- SDF
Nonstop1h 15m
Southwest
Deal found 1/29![Southwest logo]()
$230
This Kiwi.com deal was found by Cheapflights users on 1/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/262:26 pm
SDF
- ORD
2 stops23h 37m
Multiple Airlines
Thu 3/53:21 pm
ORD
- SDF
1 stop16h 19m
Multiple Airlines
Deal found 1/29![Multiple Airlines logo]()
$232
This American Airlines deal was found by Cheapflights users on 1/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/2812:00 pm
SDF
- ORD
Nonstop1h 34m
American Airlines
Sun 3/16:54 pm
ORD
- SDF
Nonstop1h 32m
American Airlines
Deal found 1/28![American Airlines logo]()
$254
This Southwest deal was found by Cheapflights users on 1/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/286:40 am
SDF
- MDW
Nonstop1h 25m
Southwest
Sun 3/19:55 pm
MDW
- SDF
Nonstop1h 10m
Southwest
Deal found 1/28![Southwest logo]()
$255
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 January 31, 2026.
Search for one-way flight options from Louisville to Illinois. Find affordable one-way fares based on user searches. Data last updated January 31, 2026.
This American Airlines deal was found by Cheapflights users on 1/31. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/217:09 am
SDF
- ORD
Nonstop1h 34m
American Airlines
Deal found 1/31![American Airlines logo]()
$74
This Southwest deal was found by Cheapflights users on 1/31. 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.
Sat 3/147:55 pm
SDF
- MDW
Nonstop1h 15m
Southwest
Deal found 1/31![Southwest logo]()
$80
This United Airlines deal was found by Cheapflights users on 1/30. 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.
Wed 2/255:35 am
SDF
- ORD
Nonstop1h 44m
United Airlines
Deal found 1/30![United Airlines logo]()
$89
This Southwest deal was found by Cheapflights users on 1/31. 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.
Tue 2/246:30 pm
SDF
- MDW
Nonstop1h 15m
Southwest
Deal found 1/31![Southwest logo]()
$89
This Southwest deal was found by Cheapflights users on 1/31. 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.
Sat 4/255:35 am
SDF
- MDW
1 stop8h 35m
Southwest
Deal found 1/31![Southwest logo]()
$95
This United Airlines deal was found by Cheapflights users on 1/31. 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.
Sat 3/285:35 am
SDF
- ORD
Nonstop1h 44m
United Airlines
Deal found 1/31![United Airlines logo]()
$96
This Kiwi.com deal was found by Cheapflights users on 1/30. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/277:48 pm
SDF
- ORD
1 stop26h 29m
Multiple Airlines
Deal found 1/30![Multiple Airlines logo]()
$97
This Mytrip deal was found by Cheapflights users on 1/31. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/243:33 pm
SDF
- ORD
1 stop9h 14m
Spirit Airlines
Deal found 1/31![Spirit Airlines logo]()
$98
This Delta deal was found by Cheapflights users on 1/31. 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.
Wed 3/410:46 am
SDF
- ORD
1 stop3h 34m
Delta
Deal found 1/31![Delta logo]()
$99
This Southwest deal was found by Cheapflights users on 1/30. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/252:30 pm
SDF
- MDW
1 stop5h 30m
Southwest
Deal found 1/30![Southwest logo]()
$99
This American Airlines deal was found by Cheapflights users on 1/31. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/246:12 pm
SDF
- ORD
Nonstop1h 48m
American Airlines
Deal found 1/31![American Airlines logo]()
$101
This Mytrip deal was found by Cheapflights users on 1/31. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/33:33 pm
SDF
- ORD
1 stop9h 14m
Spirit Airlines
Deal found 1/31![Spirit Airlines logo]()
$102
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 January 31, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $177 (United Airlines) |
One-way from | $74 (American Airlines) |
Popular in | March |
Cheapest in | November |
Average price | $257 |
Good round-trip deal | $349 or less |
Good one-way deal | $196 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 January 31, 2026.
Use the filters below to find and compare flights from Louisville to Illinois that are best for you.
Fly from
Louisville
Fly to
Illinois
Route
Depart
Return
Price
LouisvilleChicago
SDF - ORD
SDFORD
Louisville Intl
Tue 2/24
5:54 pm-6:49 pm
Nonstop1h 55m
Chicago O'Hare Intl
Wed 2/25
5:45 pm-8:09 pm
Nonstop1h 24m
$177
LouisvilleChicago
SDF - MDW
SDFMDW
Louisville Intl
Tue 3/17
11:50 am-12:05 pm
Nonstop1h 15m
Chicago Midway
Wed 3/18
8:10 am-10:30 am
Nonstop1h 20m
$177
LouisvilleChicago
SDF - MDW
SDFMDW
Louisville Intl
Wed 3/18
8:55 am-9:15 am
Nonstop1h 20m
Chicago Midway
Wed 3/25
5:30 pm-10:15 pm
1 stop3h 45m
$187
LouisvilleChicago
SDF - MDW
SDFMDW
Louisville Intl
Tue 5/5
3:30 pm-3:45 pm
Nonstop1h 15m
Chicago Midway
Thu 5/7
12:45 pm-3:00 pm
Nonstop1h 15m
$196
LouisvilleChicago
SDF - MDW
SDFMDW
Louisville Intl
Tue 3/17
7:45 am-12:29 pm
1 stop5h 44m
Chicago Midway
Wed 3/18
9:35 am-6:49 pm
2 stops8h 14m
$202
LouisvilleChicago
SDF - ORD
SDFORD
Louisville Intl
Wed 3/18
6:35 am-12:50 pm
1 stop7h 15m
Chicago O'Hare Intl
Wed 3/25
2:40 pm-10:15 pm
1 stop6h 35m
$202
LouisvilleChicago
SDF - MDW
SDFMDW
Louisville Intl
Thu 3/12
8:05 pm-8:20 pm
Nonstop1h 15m
Chicago Midway
Sat 3/14
7:45 am-10:00 am
Nonstop1h 15m
$203
LouisvilleChicago
SDF - MDW
SDFMDW
Louisville Intl
Sat 3/14
7:55 pm-8:10 pm
Nonstop1h 15m
Chicago Midway
Mon 3/16
7:40 pm-9:55 pm
Nonstop1h 15m
$203
LouisvilleChicago
SDF - ORD
SDFORD
Louisville Intl
Thu 4/30
6:21 pm-11:53 pm
1 stop6h 32m
Chicago O'Hare Intl
Sat 5/2
6:56 pm-9:28 pm
Nonstop1h 32m
$211
LouisvilleChicago
SDF - ORD
SDFORD
Louisville Intl
Sat 3/14
7:45 am-1:24 pm
1 stop6h 39m
Chicago O'Hare Intl
Mon 3/16
7:10 am-1:37 pm
1 stop5h 27m
$225
Showing 1-10 of 56 results
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, September is the cheapest month in which you can book a flight from Louisville to Illinois (average of $77). Flying from Louisville to Illinois in July is currently the most expensive (average of $139). 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 January 31, 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 January 24, 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 January 31, 2026.
The most flights from SDF to USIL are scheduled on a Friday (37 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (19 on average).
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 January 31, 2026.
See what other customers who have flown with Southwest, United Airlines, and American 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
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Crew
8.6
Overall
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Food
7.0
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Crew
8.6
Overall
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Food
7.0
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Crew
8.6
Overall
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Food
7.0
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Crew
8.6
Overall
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
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.
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes for Louisville to Illinois
See prices for flight routes from nearby airports that may be better suited for you.
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 January 31, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$97 | Average$256 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$97 | Average$271 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$97 | Average$262 | FlexibilityNo cancel fee | On-time63% |