$88+ 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 5/15. Fares are subject to change and may not be available on all flights or dates of travel.
SDF — ORD
mag 18 — mag 251
Round-trip
1 adult, Economy
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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 aprile 18, 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 aprile 18, 2026.
This Kiwi.com deal was found by Cheapflights users on 4/15. Clicking the “Pick Dates” 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.
ven 5/1510:33 am
SDF
- ORD
1 stop14h 26m
Multiple Airlines
mar 5/195:05 am
ORD
- SDF
1 stop29h 29m
Multiple Airlines
Deal found 4/15![Multiple Airlines logo]()
$190
This Kiwi.com deal was found by Cheapflights users on 4/15. Clicking the “Pick Dates” 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.
ven 5/810:33 am
SDF
- ORD
1 stop14h 26m
Multiple Airlines
mar 5/124:05 pm
ORD
- SDF
2 stops39h 58m
Multiple Airlines
Deal found 4/15![Multiple Airlines logo]()
$199
This Kiwi.com deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” 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.
ven 5/17:48 pm
SDF
- ORD
1 stop14h 48m
Multiple Airlines
sab 5/27:15 pm
ORD
- SDF
1 stop20h 49m
Multiple Airlines
Deal found 4/14![Multiple Airlines logo]()
$222
This Kiwi.com deal was found by Cheapflights users on 4/13. Clicking the “Pick Dates” 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.
ven 6/59:10 pm
SDF
- ORD
1 stop16h 27m
Multiple Airlines
mar 6/97:52 am
ORD
- SDF
1 stop26h 38m
Multiple Airlines
Deal found 4/13![Multiple Airlines logo]()
$228
This Kiwi.com deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” 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.
ven 5/2210:33 am
SDF
- ORD
1 stop27h 04m
Multiple Airlines
dom 5/247:33 pm
ORD
- SDF
1 stop12h 55m
Multiple Airlines
Deal found 4/16![Multiple Airlines logo]()
$232
This Kiwi.com deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” 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.
sab 5/910:33 am
SDF
- ORD
1 stop13h 42m
Multiple Airlines
dom 5/103:44 pm
ORD
- SDF
1 stop16h 44m
Multiple Airlines
Deal found 4/14![Multiple Airlines logo]()
$238
This Kiwi.com deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” 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.
ven 5/1510:33 am
SDF
- ORD
1 stop14h 26m
Multiple Airlines
dom 5/1710:22 am
ORD
- SDF
2 stops22h 06m
Multiple Airlines
Deal found 4/16![Multiple Airlines logo]()
$239
This Kiwi.com deal was found by Cheapflights users on 4/17. Clicking the “Pick Dates” 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.
ven 6/59:10 pm
SDF
- ORD
1 stop16h 27m
Multiple Airlines
mer 6/107:52 am
ORD
- SDF
1 stop24h 36m
Multiple Airlines
Deal found 4/17![Multiple Airlines logo]()
$242
This Kiwi.com deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” 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.
gio 5/2110:33 am
SDF
- ORD
1 stop13h 42m
Multiple Airlines
mar 5/268:05 am
ORD
- SDF
1 stop26h 29m
Multiple Airlines
Deal found 4/16![Multiple Airlines logo]()
$243
This Kiwi.com deal was found by Cheapflights users on 4/15. Clicking the “Pick Dates” 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.
mer 5/2012:24 pm
SDF
- ORD
1 stop25h 13m
Multiple Airlines
sab 5/235:11 pm
ORD
- SDF
1 stop14h 40m
Multiple Airlines
Deal found 4/15![Multiple Airlines logo]()
$245
This Southwest deal was found by Cheapflights users on 4/15. Clicking the “Pick Dates” 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.
mer 5/133:30 pm
SDF
- MDW
Nonstop1h 15m
Southwest
mer 5/2012:50 pm
MDW
- SDF
Nonstop1h 15m
Southwest
Deal found 4/15![Southwest logo]()
$257
This Southwest deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” 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.
sab 5/168:40 am
SDF
- MDW
Nonstop1h 20m
Southwest
mar 5/197:40 am
MDW
- SDF
Nonstop1h 10m
Southwest
Deal found 4/16![Southwest logo]()
$264
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 aprile 18, 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 aprile 18, 2026.
This United Airlines deal was found by Cheapflights users on 4/13. Clicking the “Pick Dates” 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.
mar 5/125:40 am
SDF
- ORD
Nonstop1h 40m
United Airlines
mer 5/137:53 pm
ORD
- SDF
Nonstop1h 37m
United Airlines
Deal found 4/13![United Airlines logo]()
$257
This Southwest deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” 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.
mar 5/123:45 pm
SDF
- STL
1 stop6h 20m
Southwest
mar 5/192:30 pm
STL
- SDF
1 stop5h 35m
Southwest
Deal found 4/14![Southwest logo]()
$275
This Delta deal was found by Cheapflights users on 4/17. Clicking the “Pick Dates” 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.
mar 6/27:50 am
SDF
- ORD
1 stop3h 39m
Delta
mar 6/95:57 pm
ORD
- SDF
1 stop4h 57m
Delta
Deal found 4/17![Delta logo]()
$277
This American Airlines deal was found by Cheapflights users on 4/15. Clicking the “Pick Dates” 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.
mer 5/275:43 pm
SDF
- STL
1 stop7h 01m
American Airlines
lun 6/16:12 pm
STL
- SDF
1 stop5h 16m
American Airlines
Deal found 4/15![American Airlines logo]()
$293
This Kiwi.com deal was found by Cheapflights users on 4/18. Clicking the “Pick Dates” 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.
dom 5/311:08 am
SDF
- MLI
1 stop23h 21m
Allegiant Air
gio 5/79:24 am
MLI
- SDF
1 stop10h 00m
Allegiant Air
Deal found 4/18![Allegiant Air logo]()
$456
This United Airlines deal was found by Cheapflights users on 4/15. Clicking the “Pick Dates” 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.
mer 5/1310:06 am
SDF
- ORD
Nonstop1h 39m
United Airlines
mer 5/2012:30 pm
ORD
- SDF
Nonstop1h 25m
United Airlines
Deal found 4/15![United Airlines logo]()
$257
This Southwest deal was found by Cheapflights users on 4/15. Clicking the “Pick Dates” 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.
ven 5/88:10 pm
SDF
- MDW
Nonstop1h 15m
Southwest
mar 5/126:20 pm
MDW
- SDF
Nonstop1h 15m
Southwest
Deal found 4/15![Southwest logo]()
$277
This Delta deal was found by Cheapflights users on 4/17. Clicking the “Pick Dates” 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.
mar 5/195:47 pm
SDF
- MDW
1 stop4h 22m
Delta
mar 5/269:22 am
MDW
- SDF
1 stop3h 29m
Delta
Deal found 4/17![Delta logo]()
$277
This Kiwi.com deal was found by Cheapflights users on 4/18. Clicking the “Pick Dates” 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.
dom 5/311:08 am
SDF
- MLI
1 stop23h 21m
Multiple Airlines
gio 5/712:19 pm
MLI
- SDF
2 stops54h 07m
Multiple Airlines
Deal found 4/18![Multiple Airlines logo]()
$613
This Southwest deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” 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.
mar 5/1212:10 pm
SDF
- STL
2 stops8h 50m
Southwest
mer 5/135:35 am
STL
- SDF
1 stop3h 15m
Southwest
Deal found 4/14![Southwest logo]()
$280
This Delta deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” 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.
lun 5/117:59 pm
SDF
- ORD
1 stop5h 00m
Delta
mer 5/137:00 am
ORD
- SDF
1 stop5h 51m
Delta
Deal found 4/14![Delta logo]()
$292
This United Airlines deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” 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.
lun 6/85:20 am
SDF
- ORD
Nonstop1h 41m
United Airlines
gio 6/116:35 am
ORD
- SDF
Nonstop1h 27m
United Airlines
Deal found 4/16![United Airlines logo]()
$301
This Southwest deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” 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.
sab 5/98:40 am
SDF
- MDW
Nonstop1h 20m
Southwest
lun 5/115:30 am
MDW
- SDF
1 stop7h 30m
Southwest
Deal found 4/14![Southwest logo]()
$289
This Delta deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” 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.
mer 5/277:49 pm
SDF
- STL
1 stop4h 32m
Delta
lun 6/15:20 pm
STL
- SDF
1 stop4h 16m
Delta
Deal found 4/16![Delta logo]()
$293
This Southwest deal was found by Cheapflights users on 4/15. Clicking the “Pick Dates” 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.
ven 5/152:40 pm
SDF
- MDW
Nonstop1h 15m
Southwest
mar 5/1910:15 am
MDW
- SDF
2 stops9h 50m
Southwest
Deal found 4/15![Southwest logo]()
$292
This Delta deal was found by Cheapflights users on 4/15. Clicking the “Pick Dates” 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.
sab 5/305:47 pm
SDF
- ORD
1 stop7h 16m
Delta
sab 6/61:44 pm
ORD
- SDF
1 stop6h 34m
Delta
Deal found 4/15![Delta logo]()
$307
This United Airlines deal was found by Cheapflights users on 4/13. Clicking the “Pick Dates” 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.
mar 6/210:02 am
SDF
- STL
1 stop6h 44m
United Airlines
mer 6/35:41 pm
STL
- SDF
1 stop3h 49m
United Airlines
Deal found 4/13![United Airlines logo]()
$345
This Southwest deal was found by Cheapflights users on 4/17. Clicking the “Pick Dates” 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.
mer 5/271:35 pm
SDF
- STL
1 stop5h 20m
Southwest
gio 5/285:40 am
STL
- SDF
1 stop3h 15m
Southwest
Deal found 4/17![Southwest logo]()
$293
This Delta deal was found by Cheapflights users on 4/18. Clicking the “Pick Dates” 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.
ven 6/266:00 am
SDF
- MLI
1 stop5h 24m
Delta
lun 6/295:56 am
MLI
- SDF
1 stop4h 57m
Delta
Deal found 4/18![Delta logo]()
$309
This United Airlines deal was found by Cheapflights users on 4/17. Clicking the “Pick Dates” 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.
mar 6/95:20 am
SDF
- STL
1 stop4h 21m
United Airlines
mer 6/101:13 pm
STL
- SDF
1 stop6h 10m
United Airlines
Deal found 4/17![United Airlines logo]()
$345
This Southwest deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” 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.
sab 5/95:35 am
SDF
- ORD
2 stops10h 55m
Southwest
lun 5/112:40 pm
ORD
- SDF
1 stop6h 05m
Southwest
Deal found 4/16![Southwest logo]()
$304
This Delta deal was found by Cheapflights users on 4/13. Clicking the “Pick Dates” 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.
sab 5/96:05 am
SDF
- ORD
2 stops7h 51m
Delta
lun 5/116:24 am
ORD
- SDF
2 stops6h 27m
Delta
Deal found 4/13![Delta logo]()
$309
This Southwest deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” 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.
lun 6/86:05 pm
SDF
- MDW
1 stop4h 50m
Southwest
gio 6/117:45 pm
MDW
- SDF
Nonstop1h 10m
Southwest
Deal found 4/16![Southwest logo]()
$311
This Delta deal was found by Cheapflights users on 4/15. Clicking the “Pick Dates” 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.
gio 5/146:05 am
SDF
- STL
1 stop5h 27m
Delta
gio 5/216:45 am
STL
- SDF
1 stop6h 06m
Delta
Deal found 4/15![Delta logo]()
$311
This United Airlines deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” 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.
mar 8/117:22 am
SDF
- MLI
1 stop3h 32m
United Airlines
sab 8/156:50 pm
MLI
- SDF
1 stop4h 15m
United Airlines
Deal found 4/14![United Airlines logo]()
$379
This Southwest deal was found by Cheapflights users on 4/13. Clicking the “Pick Dates” 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.
ven 6/55:05 pm
SDF
- MDW
1 stop5h 55m
Southwest
lun 6/85:05 pm
MDW
- SDF
1 stop4h 20m
Southwest
Deal found 4/13![Southwest logo]()
$312
This Delta deal was found by Cheapflights users on 4/13. Clicking the “Pick Dates” 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.
mer 7/154:47 pm
SDF
- ORD
1 stop4h 46m
Delta
dom 7/198:52 am
ORD
- SDF
1 stop3h 47m
Delta
Deal found 4/13![Delta logo]()
$315
This Southwest deal was found by Cheapflights users on 4/15. Clicking the “Pick Dates” 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.
gio 5/218:40 am
SDF
- MDW
Nonstop1h 20m
Southwest
lun 5/2512:45 pm
MDW
- SDF
Nonstop1h 15m
Southwest
Deal found 4/15![Southwest logo]()
$312
This Delta deal was found by Cheapflights users on 4/15. Clicking the “Pick Dates” 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.
mer 7/154:47 pm
SDF
- MDW
1 stop6h 28m
Delta
sab 7/186:05 am
MDW
- SDF
1 stop4h 46m
Delta
Deal found 4/15![Delta logo]()
$315
This Delta deal was found by Cheapflights users on 4/15. Clicking the “Pick Dates” 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.
mer 7/156:49 am
SDF
- ORD
2 stops7h 14m
Delta
sab 7/186:30 am
ORD
- SDF
1 stop4h 21m
Delta
Deal found 4/15![Delta logo]()
$320
Last-minute flights from Louisville to IllinoisDiscover last-minute flight deals from Louisville to Illinois. Data last updated aprile 18, 2026 and is based on user searches.
Discover last-minute flight deals from Louisville to Illinois. Data last updated aprile 18, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 4/15. Clicking the “Pick Dates” 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.
gio 4/3011:40 am
SDF
- ORD
1 stop25h 02m
Multiple Airlines
lun 5/45:05 am
ORD
- SDF
1 stop12h 53m
Multiple Airlines
Deal found 4/15![Multiple Airlines logo]()
$248
This Kiwi.com deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” 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.
ven 5/17:48 pm
SDF
- ORD
1 stop14h 48m
Multiple Airlines
sab 5/27:15 pm
ORD
- SDF
1 stop20h 49m
Multiple Airlines
Deal found 4/14![Multiple Airlines logo]()
$222
This Kiwi.com deal was found by Cheapflights users on 4/15. Clicking the “Pick Dates” 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.
ven 5/810:33 am
SDF
- ORD
1 stop14h 26m
Multiple Airlines
mar 5/124:05 pm
ORD
- SDF
2 stops39h 58m
Multiple Airlines
Deal found 4/15![Multiple Airlines logo]()
$199
This Kiwi.com deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” 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.
sab 5/910:33 am
SDF
- ORD
1 stop13h 42m
Multiple Airlines
dom 5/103:44 pm
ORD
- SDF
1 stop16h 44m
Multiple Airlines
Deal found 4/14![Multiple Airlines logo]()
$238
This Southwest deal was found by Cheapflights users on 4/17. Clicking the “Pick Dates” 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.
sab 5/94:50 pm
SDF
- MDW
Nonstop1h 20m
Southwest
sab 5/163:35 pm
MDW
- SDF
Nonstop1h 10m
Southwest
Deal found 4/17![Southwest logo]()
$271
This Southwest deal was found by Cheapflights users on 4/15. Clicking the “Pick Dates” 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.
mer 5/133:30 pm
SDF
- MDW
Nonstop1h 15m
Southwest
mer 5/2012:50 pm
MDW
- SDF
Nonstop1h 15m
Southwest
Deal found 4/15![Southwest logo]()
$257
This Kiwi.com deal was found by Cheapflights users on 4/15. Clicking the “Pick Dates” 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.
ven 5/1510:33 am
SDF
- ORD
1 stop14h 26m
Multiple Airlines
mar 5/195:05 am
ORD
- SDF
1 stop29h 29m
Multiple Airlines
Deal found 4/15![Multiple Airlines logo]()
$190
This Kiwi.com deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” 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.
ven 5/1510:33 am
SDF
- ORD
1 stop14h 26m
Multiple Airlines
dom 5/1710:22 am
ORD
- SDF
2 stops22h 06m
Multiple Airlines
Deal found 4/16![Multiple Airlines logo]()
$239
This Southwest deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” 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.
sab 5/168:40 am
SDF
- MDW
Nonstop1h 20m
Southwest
mar 5/197:40 am
MDW
- SDF
Nonstop1h 10m
Southwest
Deal found 4/16![Southwest logo]()
$264
This Kiwi.com deal was found by Cheapflights users on 4/15. Clicking the “Pick Dates” 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.
mer 5/2012:24 pm
SDF
- ORD
1 stop25h 13m
Multiple Airlines
sab 5/235:11 pm
ORD
- SDF
1 stop14h 40m
Multiple Airlines
Deal found 4/15![Multiple Airlines logo]()
$245
This Kiwi.com deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” 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.
gio 5/2110:33 am
SDF
- ORD
1 stop13h 42m
Multiple Airlines
mar 5/268:05 am
ORD
- SDF
1 stop26h 29m
Multiple Airlines
Deal found 4/16![Multiple Airlines logo]()
$243
This Kiwi.com deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” 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.
ven 5/2210:33 am
SDF
- ORD
1 stop27h 04m
Multiple Airlines
dom 5/247:33 pm
ORD
- SDF
1 stop12h 55m
Multiple Airlines
Deal found 4/16![Multiple Airlines logo]()
$232
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 aprile 18, 2026.
Search for one-way flight options from Louisville to Illinois. Find affordable one-way fares based on user searches. Data last updated aprile 18, 2026.
This Kiwi.com deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” 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.
ven 5/1510:33 am
SDF
- ORD
1 stop14h 26m
Multiple Airlines
Deal found 4/14![Multiple Airlines logo]()
$88
This Kiwi.com deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” 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.
lun 6/159:15 pm
SDF
- ORD
1 stop16h 28m
Multiple Airlines
Deal found 4/16![Multiple Airlines logo]()
$89
This Kiwi.com deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” 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.
lun 6/19:10 pm
SDF
- ORD
1 stop16h 27m
Multiple Airlines
Deal found 4/16![Multiple Airlines logo]()
$96
This Kiwi.com deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” 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.
lun 5/1810:33 am
SDF
- ORD
1 stop14h 26m
Multiple Airlines
Deal found 4/16![Multiple Airlines logo]()
$101
This Kiwi.com deal was found by Cheapflights users on 4/18. Clicking the “Pick Dates” 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.
mer 5/2012:24 pm
SDF
- ORD
1 stop25h 13m
Multiple Airlines
Deal found 4/18![Multiple Airlines logo]()
$110
This Kiwi.com deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” 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.
sab 5/168:06 pm
SDF
- ORD
1 stop19h 33m
Multiple Airlines
Deal found 4/14![Multiple Airlines logo]()
$112
This Kiwi.com deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” 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.
gio 5/1410:33 am
SDF
- ORD
1 stop14h 05m
Multiple Airlines
Deal found 4/14![Multiple Airlines logo]()
$114
This Kiwi.com deal was found by Cheapflights users on 4/15. Clicking the “Pick Dates” 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.
lun 5/187:48 pm
SDF
- MDW
2 stops16h 21m
Multiple Airlines
Deal found 4/15![Multiple Airlines logo]()
$119
This Kiwi.com deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” 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.
lun 6/19:10 pm
SDF
- MDW
2 stops15h 02m
Multiple Airlines
Deal found 4/16![Multiple Airlines logo]()
$120
This Kiwi.com deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” 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.
lun 5/1110:33 am
SDF
- ORD
1 stop25h 46m
Spirit Airlines
Deal found 4/14![Spirit Airlines logo]()
$124
This Kiwi.com deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” 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.
ven 5/1510:33 am
SDF
- MDW
2 stops36h 29m
Multiple Airlines
Deal found 4/14![Multiple Airlines logo]()
$125
This Southwest deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” 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.
mar 5/53:30 pm
SDF
- MDW
Nonstop1h 15m
Southwest
Deal found 4/14![Southwest logo]()
$129
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 aprile 18, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $190 (Kiwi.com) |
One-way from | $88 (Kiwi.com) |
Popular in | January |
Cheapest in | November |
Average price | $332 |
Good round-trip deal | $384 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 aprile 18, 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
mar 5/12
5:40 am-6:20 am
Nonstop1h 40m
Chicago O'Hare Intl
mer 5/13
7:53 pm-10:30 pm
Nonstop1h 37m
$257
LouisvilleChicago
SDF - ORD
SDFORD
Louisville Intl
mer 5/13
10:06 am-10:45 am
Nonstop1h 39m
Chicago O'Hare Intl
mer 5/20
12:30 pm-2:55 pm
Nonstop1h 25m
$257
LouisvilleSt. Louis
SDF - STL
SDFSTL
Louisville Intl
mar 5/12
3:45 pm-9:05 pm
1 stop6h 20m
Lambert-St Louis
mar 5/19
2:30 pm-9:05 pm
1 stop5h 35m
$275
LouisvilleChicago
SDF - ORD
SDFORD
Louisville Intl
mar 6/2
7:50 am-10:29 am
1 stop3h 39m
Chicago O'Hare Intl
mar 6/9
5:57 pm-11:54 pm
1 stop4h 57m
$277
Quickest round-trip
LouisvilleChicago
SDF - MDW
SDFMDW
Louisville Intl
ven 5/8
8:10 pm-8:25 pm
Nonstop1h 15m
Chicago Midway
mar 5/12
6:20 pm-8:35 pm
Nonstop1h 15m
$277
LouisvilleChicago
SDF - MDW
SDFMDW
Louisville Intl
mar 5/19
5:47 pm-9:09 pm
1 stop4h 22m
Chicago Midway
mar 5/26
9:22 am-1:51 pm
1 stop3h 29m
$277
LouisvilleSt. Louis
SDF - STL
SDFSTL
Louisville Intl
mar 5/12
12:10 pm-8:00 pm
2 stops8h 50m
Lambert-St Louis
mer 5/13
5:35 am-9:50 am
1 stop3h 15m
$280
LouisvilleChicago
SDF - MDW
SDFMDW
Louisville Intl
sab 5/9
8:40 am-9:00 am
Nonstop1h 20m
Chicago Midway
lun 5/11
5:30 am-2:00 pm
1 stop7h 30m
$289
LouisvilleChicago
SDF - ORD
SDFORD
Louisville Intl
lun 5/11
7:59 pm-11:59 pm
1 stop5h 00m
Chicago O'Hare Intl
mer 5/13
7:00 am-1:51 pm
1 stop5h 51m
$292
LouisvilleChicago
SDF - MDW
SDFMDW
Louisville Intl
ven 5/15
2:40 pm-2:55 pm
Nonstop1h 15m
Chicago Midway
mar 5/19
10:15 am-9:05 pm
2 stops9h 50m
$292
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-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, January is the cheapest month in which you can book a flight from Louisville to Illinois (average of $67). Flying from Louisville to Illinois in February is currently the most expensive (average of $177). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from SDF to IL?
Find hourly flight availability from Louisville to Illinois. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated aprile 18, 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 18, 2026.
Travelers seeking maximum savings on their Louisville to Illinois flight should consider departing on Friday afternoons when fares are most often at their lowest. Saturday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
Weekly flight availability from Louisville to Illinois
Explore weekly flight availability from Louisville to Illinois. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated aprile 18, 2026.
The most flights from SDF to USIL are scheduled on a Wednesday (47 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (30 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 aprile 18, 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.
Comfort
8.0
Food
7.0
Overall
8.0
Crew
8.6
Boarding
8.1
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Comfort
8.0
Food
7.0
Overall
8.0
Crew
8.6
Boarding
8.1
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Comfort
8.0
Food
7.0
Overall
8.0
Crew
8.6
Boarding
8.1
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Comfort
8.0
Food
7.0
Overall
8.0
Crew
8.6
Boarding
8.1
Entertainment
7.5
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
See prices for flight routes from nearby airports that may be better suited for you.
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 aprile 18, 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 aprile 18, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$77 | Average$225 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$97 | Average$253 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$114 | Average$273 | FlexibilityNo cancel fee | On-time69% |