$78+ Cheap flights from Louisville (SDF) to Illinois
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/1. Fares are subject to change and may not be available on all flights or dates of travel.
SDF — ORD
May 9 — May 161
Round-trip
1 adult, Economy
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Find cheap flights from Louisville to Illinois with Cheapflights
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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 April 9, 2026.
Explore the most affordable flight options available from Louisville to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 9, 2026.
This Kiwi.com deal was found by Cheapflights users on 4/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/276:06 pm
SDF
- ORD
1 stop28h 11m
Multiple Airlines
Thu 5/73:44 pm
ORD
- SDF
1 stop16h 44m
Multiple Airlines
Deal found 4/7![Multiple Airlines logo]()
$149
This Kiwi.com deal was found by Cheapflights users on 4/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/17:48 pm
SDF
- ORD
1 stop26h 29m
Multiple Airlines
Thu 5/73:44 pm
ORD
- SDF
1 stop26h 14m
Multiple Airlines
Deal found 4/8![Multiple Airlines logo]()
$161
This Kiwi.com deal was found by Cheapflights users on 4/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/276:06 pm
SDF
- ORD
1 stop28h 11m
Multiple Airlines
Fri 5/15:05 am
ORD
- SDF
1 stop10h 59m
Multiple Airlines
Deal found 4/7![Multiple Airlines logo]()
$175
This Kiwi.com deal was found by Cheapflights users on 4/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/1510:33 am
SDF
- ORD
1 stop14h 26m
Multiple Airlines
Tue 5/191:18 pm
ORD
- SDF
1 stop21h 16m
Multiple Airlines
Deal found 4/7![Multiple Airlines logo]()
$176
This Kiwi.com deal was found by Cheapflights users on 4/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/16:06 pm
SDF
- ORD
1 stop16h 30m
Multiple Airlines
Sun 5/31:00 pm
ORD
- SDF
1 stop19h 28m
Multiple Airlines
Deal found 4/5![Multiple Airlines logo]()
$180
This Kiwi.com deal was found by Cheapflights users on 4/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/276:06 pm
SDF
- ORD
1 stop16h 30m
Multiple Airlines
Thu 4/301:27 pm
ORD
- SDF
1 stop28h 31m
Multiple Airlines
Deal found 4/8![Multiple Airlines logo]()
$188
This Kiwi.com deal was found by Cheapflights users on 4/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/410:33 am
SDF
- ORD
2 stops22h 22m
Multiple Airlines
Thu 5/73:44 pm
ORD
- SDF
1 stop16h 44m
Multiple Airlines
Deal found 4/5![Multiple Airlines logo]()
$192
This Kiwi.com deal was found by Cheapflights users on 4/4. 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 4/206:06 pm
SDF
- ORD
1 stop28h 11m
Multiple Airlines
Fri 5/15:05 am
ORD
- SDF
1 stop10h 59m
Multiple Airlines
Deal found 4/4![Multiple Airlines logo]()
$193
This Kiwi.com deal was found by Cheapflights users on 4/4. 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.
Fri 5/810:33 am
SDF
- ORD
1 stop14h 26m
Multiple Airlines
Sun 5/103:44 pm
ORD
- SDF
1 stop16h 44m
Multiple Airlines
Deal found 4/4![Multiple Airlines logo]()
$195
This Kiwi.com deal was found by Cheapflights users on 4/6. Clicking the “Pick Dates” 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 5/68:06 pm
SDF
- ORD
1 stop19h 33m
Multiple Airlines
Wed 5/133:55 pm
ORD
- SDF
1 stop16h 08m
Multiple Airlines
Deal found 4/6![Multiple Airlines logo]()
$198
This Southwest deal was found by Cheapflights users on 4/7. Clicking the “Pick Dates” 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
Tue 5/1212:50 pm
MDW
- SDF
Nonstop1h 15m
Southwest
Deal found 4/7![Southwest logo]()
$257
This Southwest deal was found by Cheapflights users on 4/6. Clicking the “Pick Dates” 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 7/144:20 pm
SDF
- MDW
Nonstop1h 15m
Southwest
Wed 7/157:45 am
MDW
- SDF
Nonstop1h 20m
Southwest
Deal found 4/6![Southwest logo]()
$275
Best flights from Louisville to IllinoisDiscover carefully curated flight deals from Louisville to Illinois that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 9, 2026.
Discover carefully curated flight deals from Louisville to Illinois that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 9, 2026.
This United Airlines deal was found by Cheapflights users on 4/5. Clicking the “Pick Dates” 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 5/57:15 am
SDF
- ORD
Nonstop1h 40m
United Airlines
Tue 5/52:25 pm
ORD
- SDF
Nonstop1h 35m
United Airlines
Deal found 4/5![United Airlines logo]()
$257
This Southwest deal was found by Cheapflights users on 4/5. Clicking the “Pick Dates” 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 5/56:20 am
SDF
- MDW
1 stop5h 20m
Southwest
Wed 5/612:50 pm
MDW
- SDF
Nonstop1h 15m
Southwest
Deal found 4/5![Southwest logo]()
$267
This Delta deal was found by Cheapflights users on 4/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/55:48 pm
SDF
- MDW
1 stop5h 40m
Delta
Wed 5/61:24 pm
MDW
- SDF
2 stops9h 35m
Delta
Deal found 4/5![Delta logo]()
$282
This American Airlines deal was found by Cheapflights users on 4/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/278:15 am
SDF
- STL
1 stop4h 44m
American Airlines
Mon 6/16:12 pm
STL
- SDF
1 stop5h 16m
American Airlines
Deal found 4/5![American Airlines logo]()
$293
This Southwest deal was found by Cheapflights users on 4/4. 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.
Sat 4/258:40 am
SDF
- MDW
Nonstop1h 20m
Southwest
Mon 4/276:45 pm
MDW
- SDF
Nonstop1h 15m
Southwest
Deal found 4/4![Southwest logo]()
$279
This Delta deal was found by Cheapflights users on 4/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/56:04 am
SDF
- ORD
2 stops7h 41m
Delta
Wed 5/66:25 am
ORD
- SDF
2 stops7h 05m
Delta
Deal found 4/5![Delta logo]()
$288
This Southwest deal was found by Cheapflights users on 4/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/158:40 am
SDF
- MDW
Nonstop1h 20m
Southwest
Tue 5/197:40 am
MDW
- SDF
Nonstop1h 10m
Southwest
Deal found 4/6![Southwest logo]()
$286
This United Airlines deal was found by Cheapflights users on 4/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/2210:02 am
SDF
- ORD
Nonstop1h 36m
United Airlines
Sun 5/249:24 pm
ORD
- SDF
Nonstop1h 35m
United Airlines
Deal found 4/5![United Airlines logo]()
$315
This American Airlines deal was found by Cheapflights users on 4/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/2110:35 am
SDF
- MLI
2 stops8h 32m
American Airlines
Sat 4/2512:52 pm
MLI
- SDF
1 stop5h 10m
American Airlines
Deal found 4/6![American Airlines logo]()
$324
This Delta deal was found by Cheapflights users on 4/8. Clicking the “Pick Dates” 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 4/306:08 pm
SDF
- ORD
1 stop3h 32m
Delta
Sat 5/27:00 am
ORD
- SDF
2 stops6h 31m
Delta
Deal found 4/8![Delta logo]()
$304
This Southwest deal was found by Cheapflights users on 4/4. 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.
Sat 4/256:40 am
SDF
- STL
1 stop2h 45m
Southwest
Mon 4/277:35 am
STL
- SDF
1 stop3h 05m
Southwest
Deal found 4/4![Southwest logo]()
$288
This American Airlines deal was found by Cheapflights users on 4/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/19:43 am
SDF
- ORD
1 stop6h 38m
American Airlines
Sat 5/29:16 pm
ORD
- SDF
Nonstop1h 32m
American Airlines
Deal found 4/8![American Airlines logo]()
$325
This United Airlines deal was found by Cheapflights users on 4/5. Clicking the “Pick Dates” 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 4/297:20 am
SDF
- ORD
Nonstop1h 40m
United Airlines
Wed 5/611:40 am
ORD
- SDF
Nonstop1h 27m
United Airlines
Deal found 4/5![United Airlines logo]()
$327
This Delta deal was found by Cheapflights users on 4/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/97:50 am
SDF
- ORD
2 stops10h 01m
Delta
Mon 5/116:24 am
ORD
- SDF
2 stops6h 27m
Delta
Deal found 4/8![Delta logo]()
$309
This Southwest deal was found by Cheapflights users on 4/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/26:40 am
SDF
- STL
1 stop2h 45m
Southwest
Mon 5/45:05 am
STL
- SDF
1 stop5h 30m
Southwest
Deal found 4/7![Southwest logo]()
$288
This United Airlines deal was found by Cheapflights users on 4/4. 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.
Tue 5/123:36 pm
SDF
- ORD
Nonstop1h 41m
United Airlines
Sat 5/1612:29 pm
ORD
- SDF
Nonstop1h 25m
United Airlines
Deal found 4/4![United Airlines logo]()
$334
This Delta deal was found by Cheapflights users on 4/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/2111:12 am
SDF
- MLI
1 stop6h 16m
Delta
Sat 4/255:11 pm
MLI
- SDF
1 stop5h 48m
Delta
Deal found 4/6![Delta logo]()
$319
This Southwest deal was found by Cheapflights users on 4/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/88:40 am
SDF
- MDW
Nonstop1h 20m
Southwest
Mon 5/1112:45 pm
MDW
- SDF
Nonstop1h 15m
Southwest
Deal found 4/7![Southwest logo]()
$301
This United Airlines deal was found by Cheapflights users on 4/4. 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.
Sat 5/25:52 pm
SDF
- STL
1 stop4h 21m
United Airlines
Tue 5/55:28 pm
STL
- SDF
1 stop4h 02m
United Airlines
Deal found 4/4![United Airlines logo]()
$345
This Southwest deal was found by Cheapflights users on 4/4. 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.
Mon 5/48:10 pm
SDF
- MDW
Nonstop1h 15m
Southwest
Fri 5/86:45 pm
MDW
- SDF
Nonstop1h 15m
Southwest
Deal found 4/4![Southwest logo]()
$301
This Delta deal was found by Cheapflights users on 4/4. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/207:00 am
SDF
- ORD
1 stop6h 08m
Delta
Sun 8/237:10 am
ORD
- SDF
1 stop5h 28m
Delta
Deal found 4/4![Delta logo]()
$335
This Southwest deal was found by Cheapflights users on 4/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/75:45 am
SDF
- MDW
2 stops8h 25m
Southwest
Thu 5/76:45 pm
MDW
- SDF
Nonstop1h 15m
Southwest
Deal found 4/7![Southwest logo]()
$302
This Delta deal was found by Cheapflights users on 4/4. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/167:50 am
SDF
- ORD
1 stop3h 47m
Delta
Sun 7/198:03 am
ORD
- SDF
1 stop6h 39m
Delta
Deal found 4/4![Delta logo]()
$335
This United Airlines deal was found by Cheapflights users on 4/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/1110:15 am
SDF
- MLI
1 stop5h 54m
United Airlines
Sat 8/153:44 pm
MLI
- SDF
1 stop3h 52m
United Airlines
Deal found 4/8![United Airlines logo]()
$399
This Southwest deal was found by Cheapflights users on 4/4. 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 5/228:10 pm
SDF
- MDW
Nonstop1h 15m
Southwest
Sun 5/2412:55 pm
MDW
- SDF
Nonstop1h 15m
Southwest
Deal found 4/4![Southwest logo]()
$315
This Southwest deal was found by Cheapflights users on 4/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/26:20 am
SDF
- STL
2 stops7h 30m
Southwest
Fri 6/55:20 pm
STL
- SDF
1 stop6h 05m
Southwest
Deal found 4/6![Southwest logo]()
$340
Last-minute flights from Louisville to IllinoisDiscover last-minute flight deals from Louisville to Illinois. Data last updated April 9, 2026 and is based on user searches.
Discover last-minute flight deals from Louisville to Illinois. Data last updated April 9, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 4/4. 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 4/206:06 pm
SDF
- ORD
1 stop28h 11m
Multiple Airlines
Fri 5/15:05 am
ORD
- SDF
1 stop10h 59m
Multiple Airlines
Deal found 4/4![Multiple Airlines logo]()
$193
This Kiwi.com deal was found by Cheapflights users on 4/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/276:06 pm
SDF
- ORD
1 stop28h 11m
Multiple Airlines
Thu 5/73:44 pm
ORD
- SDF
1 stop16h 44m
Multiple Airlines
Deal found 4/7![Multiple Airlines logo]()
$149
This Kiwi.com deal was found by Cheapflights users on 4/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/276:06 pm
SDF
- ORD
1 stop28h 11m
Multiple Airlines
Fri 5/15:05 am
ORD
- SDF
1 stop10h 59m
Multiple Airlines
Deal found 4/7![Multiple Airlines logo]()
$175
This Kiwi.com deal was found by Cheapflights users on 4/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/276:06 pm
SDF
- ORD
1 stop16h 30m
Multiple Airlines
Thu 4/301:27 pm
ORD
- SDF
1 stop28h 31m
Multiple Airlines
Deal found 4/8![Multiple Airlines logo]()
$188
This Delta deal was found by Cheapflights users on 4/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/295:48 pm
SDF
- MDW
1 stop5h 40m
Delta
Tue 5/56:00 am
MDW
- SDF
1 stop5h 11m
Delta
Deal found 4/8![Delta logo]()
$277
This Kiwi.com deal was found by Cheapflights users on 4/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/17:48 pm
SDF
- ORD
1 stop26h 29m
Multiple Airlines
Thu 5/73:44 pm
ORD
- SDF
1 stop26h 14m
Multiple Airlines
Deal found 4/8![Multiple Airlines logo]()
$161
This Kiwi.com deal was found by Cheapflights users on 4/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/16:06 pm
SDF
- ORD
1 stop16h 30m
Multiple Airlines
Sun 5/31:00 pm
ORD
- SDF
1 stop19h 28m
Multiple Airlines
Deal found 4/5![Multiple Airlines logo]()
$180
This Kiwi.com deal was found by Cheapflights users on 4/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/410:33 am
SDF
- ORD
2 stops22h 22m
Multiple Airlines
Thu 5/73:44 pm
ORD
- SDF
1 stop16h 44m
Multiple Airlines
Deal found 4/5![Multiple Airlines logo]()
$192
This Southwest deal was found by Cheapflights users on 4/7. Clicking the “Pick Dates” 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
Tue 5/1212:50 pm
MDW
- SDF
Nonstop1h 15m
Southwest
Deal found 4/7![Southwest logo]()
$257
This Kiwi.com deal was found by Cheapflights users on 4/6. Clicking the “Pick Dates” 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 5/68:06 pm
SDF
- ORD
1 stop19h 33m
Multiple Airlines
Wed 5/133:55 pm
ORD
- SDF
1 stop16h 08m
Multiple Airlines
Deal found 4/6![Multiple Airlines logo]()
$198
This Kiwi.com deal was found by Cheapflights users on 4/4. 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.
Fri 5/810:33 am
SDF
- ORD
1 stop14h 26m
Multiple Airlines
Sun 5/103:44 pm
ORD
- SDF
1 stop16h 44m
Multiple Airlines
Deal found 4/4![Multiple Airlines logo]()
$195
This Kiwi.com deal was found by Cheapflights users on 4/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/1510:33 am
SDF
- ORD
1 stop14h 26m
Multiple Airlines
Tue 5/191:18 pm
ORD
- SDF
1 stop21h 16m
Multiple Airlines
Deal found 4/7![Multiple Airlines logo]()
$176
One-way flights from Louisville to IllinoisSearch for one-way flight options from Louisville to Illinois. Find affordable one-way fares based on user searches. Data last updated April 9, 2026.
Search for one-way flight options from Louisville to Illinois. Find affordable one-way fares based on user searches. Data last updated April 9, 2026.
This Kiwi.com deal was found by Cheapflights users on 4/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/16:06 pm
SDF
- ORD
1 stop28h 11m
Multiple Airlines
Deal found 4/6![Multiple Airlines logo]()
$78
This Kiwi.com deal was found by Cheapflights users on 4/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/247:48 pm
SDF
- ORD
1 stop26h 29m
Multiple Airlines
Deal found 4/5![Multiple Airlines logo]()
$79
This Kiwi.com deal was found by Cheapflights users on 4/4. 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.
Tue 4/1412:42 pm
SDF
- ORD
1 stop9h 35m
Multiple Airlines
Deal found 4/4![Multiple Airlines logo]()
$89
This Kiwi.com deal was found by Cheapflights users on 4/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/810:33 am
SDF
- ORD
1 stop26h 52m
Multiple Airlines
Deal found 4/6![Multiple Airlines logo]()
$92
This Mytrip deal was found by Cheapflights users on 4/6. Clicking the “Pick Dates” 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 4/1412:42 pm
SDF
- ORD
1 stop11h 35m
Spirit Airlines
Deal found 4/6![Spirit Airlines logo]()
$93
This Kiwi.com deal was found by Cheapflights users on 4/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/47:48 pm
SDF
- ORD
1 stop28h 27m
Multiple Airlines
Deal found 4/7![Multiple Airlines logo]()
$98
This Kiwi.com deal was found by Cheapflights users on 4/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/410:33 am
SDF
- ORD
1 stop25h 46m
Spirit Airlines
Deal found 4/5![Spirit Airlines logo]()
$104
This Kiwi.com deal was found by Cheapflights users on 4/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/59:10 pm
SDF
- ORD
1 stop16h 27m
Multiple Airlines
Deal found 4/8![Multiple Airlines logo]()
$105
This Kiwi.com deal was found by Cheapflights users on 4/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/810:33 am
SDF
- ORD
1 stop14h 26m
Multiple Airlines
Deal found 4/8![Multiple Airlines logo]()
$108
This Kiwi.com deal was found by Cheapflights users on 4/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/16:06 pm
SDF
- MDW
2 stops29h 08m
Multiple Airlines
Deal found 4/5![Multiple Airlines logo]()
$115
This Kiwi.com deal was found by Cheapflights users on 4/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/246:06 pm
SDF
- MDW
2 stops29h 08m
Multiple Airlines
Deal found 4/5![Multiple Airlines logo]()
$117
This Kiwi.com deal was found by Cheapflights users on 4/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/410:33 am
SDF
- MDW
2 stops25h 36m
Multiple Airlines
Deal found 4/6![Multiple Airlines logo]()
$126
Find flight deals from Louisville to Illinois
Keep the following information in mind while searching for Louisville to Illinois flight deals. Data was last updated April 9, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $149 (Kiwi.com) |
One-way from | $78 (Kiwi.com) |
Popular in | January |
Cheapest in | November |
Average price | $332 |
Good round-trip deal | $380 or less |
Good one-way deal | $199 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Louisville to Illinois that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 9, 2026.
Use the filters below to find and compare flights from Louisville to Illinois that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
LouisvilleChicago
SDF - ORD
SDFORD
Louisville Intl
Tue 5/5
7:15 am-7:55 am
Nonstop1h 40m
Chicago O'Hare Intl
Tue 5/5
2:25 pm-5:00 pm
Nonstop1h 35m
$257
LouisvilleChicago
SDF - MDW
SDFMDW
Louisville Intl
Tue 5/5
6:20 am-10:40 am
1 stop5h 20m
Chicago Midway
Wed 5/6
12:50 pm-3:05 pm
Nonstop1h 15m
$267
LouisvilleChicago
SDF - MDW
SDFMDW
Louisville Intl
Sat 4/25
8:40 am-9:00 am
Nonstop1h 20m
Chicago Midway
Mon 4/27
6:45 pm-9:00 pm
Nonstop1h 15m
$279
LouisvilleChicago
SDF - MDW
SDFMDW
Louisville Intl
Tue 5/5
5:48 pm-10:28 pm
1 stop5h 40m
Chicago Midway
Wed 5/6
1:24 pm-11:59 pm
2 stops9h 35m
$282
Quickest round-trip
LouisvilleChicago
SDF - MDW
SDFMDW
Louisville Intl
Fri 5/15
8:40 am-9:00 am
Nonstop1h 20m
Chicago Midway
Tue 5/19
7:40 am-9:50 am
Nonstop1h 10m
$286
LouisvilleChicago
SDF - ORD
SDFORD
Louisville Intl
Tue 5/5
6:04 am-12:45 pm
2 stops7h 41m
Chicago O'Hare Intl
Wed 5/6
6:25 am-2:30 pm
2 stops7h 05m
$288
LouisvilleSt. Louis
SDF - STL
SDFSTL
Louisville Intl
Sat 4/25
6:40 am-8:25 am
1 stop2h 45m
Lambert-St Louis
Mon 4/27
7:35 am-11:40 am
1 stop3h 05m
$288
LouisvilleSt. Louis
SDF - STL
SDFSTL
Louisville Intl
Sat 5/2
6:40 am-8:25 am
1 stop2h 45m
Lambert-St Louis
Mon 5/4
5:05 am-11:35 am
1 stop5h 30m
$288
LouisvilleSt. Louis
SDF - STL
SDFSTL
Louisville Intl
Wed 5/27
8:15 am-11:59 am
1 stop4h 44m
Lambert-St Louis
Mon 6/1
6:12 pm-12:28 am
1 stop5h 16m
$293
LouisvilleChicago
SDF - MDW
SDFMDW
Louisville Intl
Fri 5/8
8:40 am-9:00 am
Nonstop1h 20m
Chicago Midway
Mon 5/11
12:45 pm-3:00 pm
Nonstop1h 15m
$301
Showing 1-10 of 56 resultsSorted by cheapest first
Best time to book a flight from Louisville to Illinois
Have a flexible travel schedule? Discover the best time to fly to Illinois from Louisville with our price prediction graph.
SDF-ORD
SDF-MDW
SDF-STL
SDF-MLI
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Louisville to Illinois
SDF-USIL
SDF-ORD
SDF-MDW
SDF-STL
SDF-MLI
What is the cheapest month to book a flight from Louisville to Illinois?
Currently, April is the cheapest month in which you can book a flight from Louisville to Illinois (average of $58). Flying from Louisville to Illinois in March is currently the most expensive (average of $180). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from SDF to IL?
Find hourly flight availability from Louisville to Illinois. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 9, 2026.
When flying from Louisville to Illinois, the time of day you fly usually plays a role in the price. Save by searching for a flight in the morning, which can drop the price by up to 32% versus a flight at noon.
What is the cheapest day to fly from Louisville to Illinois?
Use this chart to determine the cheapest time to fly round-trip from Louisville to Illinois. Price data was last updated on April 4, 2026.
Travelers seeking maximum savings on their Louisville to Illinois flight should consider departing on Friday afternoons when fares are most often at their lowest. Saturday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
Weekly flight availability from Louisville to Illinois
Explore weekly flight availability from Louisville to Illinois. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated April 9, 2026.
The most flights from SDF to USIL are scheduled on a Wednesday (45 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (27 on average).
How much does it cost to fly round-trip from Louisville to Illinois?
Reviews of airlines servicing Illinois
Get insights into the airlines that provide service to Illinois. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Illinois. Reviews last updated April 9, 2026.
See what other customers who have flown with Southwest,United Airlines, andAmerican Airlines from Louisville to Illinois have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Food
7.0
Boarding
8.1
Overall
8.0
Comfort
8.0
Entertainment
7.5
Crew
8.6
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Food
7.0
Boarding
8.1
Overall
8.0
Comfort
8.0
Entertainment
7.5
Crew
8.6
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Food
7.0
Boarding
8.1
Overall
8.0
Comfort
8.0
Entertainment
7.5
Crew
8.6
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Food
7.0
Boarding
8.1
Overall
8.0
Comfort
8.0
Entertainment
7.5
Crew
8.6
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Related info for your journey
Find useful and relevant information for your journey from Louisville to Illinois. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for Louisville to Illinois
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Complete your trip
Complete your trip to Illinois by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Louisville to Illinois by cabin class
Find flights from Louisville to Illinois, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Louisville and Illinois flights
Browse other Louisville and Illinois flight options. Last updated on April 9, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Louisville to Illinois flights
Consider these flights traveling from Louisville to Illinois.
Top 3 airlines flying from Louisville to Illinois
Discover the top 3 airlines that operate flights from Louisville to Illinois. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 9, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$97 | Average$252 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$97 | Average$240 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$114 | Average$273 | FlexibilityNo cancel fee | On-time69% |