$90+ 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 9/11. Fares are subject to change and may not be available on all flights or dates of travel.
SDF ā ORD
Sep 8 ā Sep 151
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 āFind dealsā2. 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 August 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 August 9, 2026.
This Southwest deal was found by Cheapflights users on 8/9. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Southwest is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Sat 9/54:55 pm -
Nonstop1h 20m
Sun 9/61:45 pm -
Nonstop1h 15m
Deal found 8/9![Southwest logo]()
$199
This United Airlines deal was found by Cheapflights users on 8/6. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure United Airlines is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Sat 9/59:00 am -
Nonstop1h 41m
Sun 9/66:56 am -
Nonstop1h 42m
Deal found 8/6![United Airlines logo]()
$217
This American Airlines deal was found by Cheapflights users on 8/9. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure American Airlines is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Sat 9/57:18 pm -
Nonstop1h 54m
Sun 9/66:50 pm -
Nonstop1h 35m
Deal found 8/9![American Airlines logo]()
$218
This United Airlines deal was found by Cheapflights users on 8/6. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure United Airlines is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Sat 9/51:50 pm -
Nonstop1h 40m
Mon 9/710:35 am -
Nonstop1h 36m
Deal found 8/6![United Airlines logo]()
$226
This Southwest deal was found by Cheapflights users on 8/6. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Southwest is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Sat 9/54:55 pm -
Nonstop1h 20m
Mon 9/78:00 am -
Nonstop1h 25m
Deal found 8/6![Southwest logo]()
$226
This American Airlines deal was found by Cheapflights users on 8/7. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure American Airlines is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Wed 9/211:05 am -
Nonstop1h 39m
Mon 9/76:50 pm -
Nonstop1h 35m
Deal found 8/7![American Airlines logo]()
$235
This Southwest deal was found by Cheapflights users on 8/5. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Southwest is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Mon 8/319:00 am -
Nonstop1h 15m
Wed 9/29:00 am -
Nonstop1h 20m
Deal found 8/5![Southwest logo]()
$235
This Delta deal was found by Cheapflights users on 8/7. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Delta is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Sat 9/55:50 pm -
1 stop7h 07m
Sun 9/66:00 am -
1 stop4h 55m
Deal found 8/7![Delta logo]()
$237
This Southwest deal was found by Cheapflights users on 8/7. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Southwest is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Sat 9/54:55 pm -
Nonstop1h 20m
Sat 9/127:55 am -
2 stops8h 25m
Deal found 8/7![Southwest logo]()
$241
This Delta deal was found by Cheapflights users on 8/7. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Delta is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Fri 9/116:00 pm -
1 stop6h 59m
Sat 9/123:40 pm -
1 stop5h 19m
Deal found 8/7![Delta logo]()
$246
This Southwest deal was found by Cheapflights users on 8/7. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Southwest is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Sat 9/53:50 pm -
1 stop5h 45m
Tue 9/87:40 am -
1 stop3h 30m
Deal found 8/7![Southwest logo]()
$246
This United Airlines deal was found by Cheapflights users on 8/7. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure United Airlines is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Fri 9/47:10 am -
Nonstop1h 40m
Fri 9/113:00 pm -
Nonstop1h 38m
Deal found 8/7![United Airlines logo]()
$249
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 August 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 August 9, 2026.
This Southwest deal was found by Cheapflights users on 8/8. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Southwest is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Sat 9/54:55 pm -
Nonstop1h 20m
Sun 9/68:55 am -
1 stop4h 35m
Deal found 8/8![Southwest logo]()
$227
This United Airlines deal was found by Cheapflights users on 8/7. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure United Airlines is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Thu 9/177:10 am -
Nonstop1h 40m
Mon 9/219:20 pm -
Nonstop1h 36m
Deal found 8/7![United Airlines logo]()
$235
This Delta deal was found by Cheapflights users on 8/5. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Delta is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Sat 9/55:50 pm -
1 stop7h 07m
Sun 9/66:00 am -
1 stop4h 55m
Deal found 8/5![Delta logo]()
$237
This United Airlines deal was found by Cheapflights users on 8/4. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure United Airlines is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Wed 11/117:00 am -
Nonstop1h 45m
Mon 11/164:00 pm -
Nonstop1h 32m
Deal found 8/4![United Airlines logo]()
$235
This Southwest deal was found by Cheapflights users on 8/7. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Southwest is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Thu 9/172:15 pm -
Nonstop1h 15m
Mon 9/218:00 am -
Nonstop1h 25m
Deal found 8/7![Southwest logo]()
$235
This United Airlines deal was found by Cheapflights users on 8/6. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure United Airlines is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Mon 10/199:04 am -
Nonstop1h 41m
Mon 10/199:25 pm -
Nonstop1h 34m
Deal found 8/6![United Airlines logo]()
$235
This Southwest deal was found by Cheapflights users on 8/5. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Southwest is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Tue 10/202:05 pm -
Nonstop1h 15m
Tue 10/276:00 pm -
Nonstop1h 10m
Deal found 8/5![Southwest logo]()
$235
This Delta deal was found by Cheapflights users on 8/9. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Delta is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Fri 10/237:05 am -
1 stop4h 17m
Sun 10/255:04 pm -
1 stop5h 55m
Deal found 8/9![Delta logo]()
$299
This Southwest deal was found by Cheapflights users on 8/4. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Southwest is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Mon 9/142:15 pm -
Nonstop1h 15m
Mon 9/146:10 pm -
Nonstop1h 20m
Deal found 8/4![Southwest logo]()
$258
This Delta deal was found by Cheapflights users on 8/7. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Delta is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Mon 9/76:00 am -
1 stop4h 20m
Tue 9/83:40 pm -
1 stop5h 19m
Deal found 8/7![Delta logo]()
$299
This Southwest deal was found by Cheapflights users on 8/7. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Southwest is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Sat 9/56:45 am -
2 stops7h 35m
Tue 9/87:40 am -
1 stop3h 30m
Deal found 8/7![Southwest logo]()
$260
This United Airlines deal was found by Cheapflights users on 8/6. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure United Airlines is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Thu 9/37:10 am -
1 stop3h 44m
Sun 9/61:15 pm -
1 stop4h 52m
Deal found 8/6![United Airlines logo]()
$299
This Delta deal was found by Cheapflights users on 8/7. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Delta is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Thu 9/177:55 pm -
1 stop5h 04m
Mon 9/217:05 am -
1 stop6h 02m
Deal found 8/7![Delta logo]()
$322
This Southwest deal was found by Cheapflights users on 8/6. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Southwest is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Thu 8/279:00 am -
Nonstop1h 15m
Fri 8/289:00 am -
1 stop5h 30m
Deal found 8/6![Southwest logo]()
$268
This United Airlines deal was found by Cheapflights users on 8/6. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure United Airlines is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Tue 9/19:00 am -
1 stop6h 28m
Mon 9/712:59 pm -
1 stop6h 37m
Deal found 8/6![United Airlines logo]()
$299
This Southwest deal was found by Cheapflights users on 8/7. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Southwest is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Fri 10/165:35 am -
1 stop4h 15m
Mon 10/196:55 pm -
Nonstop1h 10m
Deal found 8/7![Southwest logo]()
$268
This Delta deal was found by Cheapflights users on 8/9. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Delta is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Tue 10/207:05 am -
1 stop6h 08m
Fri 10/238:29 am -
1 stop4h 24m
Deal found 8/9![Delta logo]()
$325
This United Airlines deal was found by Cheapflights users on 8/6. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure United Airlines is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Fri 9/1811:00 am -
Nonstop1h 42m
Sun 9/204:30 pm -
Nonstop1h 37m
Deal found 8/6![United Airlines logo]()
$303
This Southwest deal was found by Cheapflights users on 8/5. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Southwest is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Wed 9/97:05 am -
2 stops8h 45m
Fri 9/114:15 pm -
1 stop5h 25m
Deal found 8/5![Southwest logo]()
$271
This Delta deal was found by Cheapflights users on 8/6. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Delta is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Fri 9/187:55 pm -
1 stop5h 04m
Sun 9/208:55 am -
1 stop4h 12m
Deal found 8/6![Delta logo]()
$333
This United Airlines deal was found by Cheapflights users on 8/4. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure United Airlines is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Tue 12/19:00 am -
Nonstop1h 31m
Wed 12/27:45 pm -
Nonstop1h 24m
Deal found 8/4![United Airlines logo]()
$305
This Southwest deal was found by Cheapflights users on 8/6. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Southwest is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Wed 10/78:35 am -
Nonstop1h 15m
Sun 10/118:20 am -
Nonstop1h 15m
Deal found 8/6![Southwest logo]()
$280
This Delta deal was found by Cheapflights users on 8/8. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Delta is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Thu 10/15:50 pm -
1 stop3h 40m
Sun 10/46:40 am -
1 stop4h 40m
Deal found 8/8![Delta logo]()
$345
This United Airlines deal was found by Cheapflights users on 8/5. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure United Airlines is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Tue 9/81:50 pm -
Nonstop1h 40m
Thu 9/102:30 pm -
1 stop4h 39m
Deal found 8/5![United Airlines logo]()
$329
This United Airlines deal was found by Cheapflights users on 8/6. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure United Airlines is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Thu 8/2710:05 am -
1 stop5h 22m
Thu 9/39:25 pm -
Nonstop1h 34m
Deal found 8/6![United Airlines logo]()
$336
This Southwest deal was found by Cheapflights users on 8/7. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Southwest is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Fri 8/287:10 pm -
1 stop3h 55m
Mon 8/312:25 pm -
1 stop6h 30m
Deal found 8/7![Southwest logo]()
$326
This United Airlines deal was found by Cheapflights users on 8/9. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure United Airlines is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Fri 8/215:15 am -
1 stop5h 39m
Sun 8/235:40 am -
1 stop6h 31m
Deal found 8/9![United Airlines logo]()
$349
This United Airlines deal was found by Cheapflights users on 8/4. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure United Airlines is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Sat 1/99:00 am -
1 stop5h 51m
Tue 1/125:42 pm -
1 stop3h 27m
Deal found 8/4![United Airlines logo]()
$369
This Southwest deal was found by Cheapflights users on 8/6. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Southwest is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Fri 11/612:05 pm -
2 stops8h 05m
Sun 11/84:30 pm -
1 stop4h 40m
Deal found 8/6![Southwest logo]()
$384
This United Airlines deal was found by Cheapflights users on 8/8. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure United Airlines is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Sat 1/3011:00 am -
1 stop3h 51m
Tue 2/22:26 pm -
1 stop4h 48m
Deal found 8/8![United Airlines logo]()
$369
Last-minute flights from Louisville to IllinoisDiscover last-minute flight deals from Louisville to Illinois. Data last updated August 9, 2026 and is based on user searches.
Discover last-minute flight deals from Louisville to Illinois. Data last updated August 9, 2026 and is based on user searches.
This Southwest deal was found by Cheapflights users on 8/5. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Southwest is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Mon 8/319:00 am -
Nonstop1h 15m
Wed 9/29:00 am -
Nonstop1h 20m
Deal found 8/5![Southwest logo]()
$235
This American Airlines deal was found by Cheapflights users on 8/7. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure American Airlines is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Wed 9/211:05 am -
Nonstop1h 39m
Mon 9/76:50 pm -
Nonstop1h 35m
Deal found 8/7![American Airlines logo]()
$235
This United Airlines deal was found by Cheapflights users on 8/7. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure United Airlines is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Fri 9/47:10 am -
Nonstop1h 40m
Fri 9/113:00 pm -
Nonstop1h 38m
Deal found 8/7![United Airlines logo]()
$249
This Southwest deal was found by Cheapflights users on 8/9. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Southwest is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Sat 9/54:55 pm -
Nonstop1h 20m
Sun 9/61:45 pm -
Nonstop1h 15m
Deal found 8/9![Southwest logo]()
$199
This United Airlines deal was found by Cheapflights users on 8/6. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure United Airlines is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Sat 9/59:00 am -
Nonstop1h 41m
Sun 9/66:56 am -
Nonstop1h 42m
Deal found 8/6![United Airlines logo]()
$217
This American Airlines deal was found by Cheapflights users on 8/9. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure American Airlines is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Sat 9/57:18 pm -
Nonstop1h 54m
Sun 9/66:50 pm -
Nonstop1h 35m
Deal found 8/9![American Airlines logo]()
$218
This United Airlines deal was found by Cheapflights users on 8/6. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure United Airlines is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Sat 9/510:23 am -
Nonstop1h 40m
Sat 9/127:15 am -
Nonstop1h 39m
Deal found 8/6![United Airlines logo]()
$226
This Southwest deal was found by Cheapflights users on 8/6. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Southwest is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Sat 9/54:55 pm -
Nonstop1h 20m
Mon 9/78:00 am -
Nonstop1h 25m
Deal found 8/6![Southwest logo]()
$226
This Delta deal was found by Cheapflights users on 8/7. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Delta is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Sat 9/55:50 pm -
1 stop7h 07m
Sun 9/66:00 am -
1 stop4h 55m
Deal found 8/7![Delta logo]()
$237
This Southwest deal was found by Cheapflights users on 8/7. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Southwest is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Sat 9/54:55 pm -
Nonstop1h 20m
Sat 9/127:55 am -
2 stops8h 25m
Deal found 8/7![Southwest logo]()
$241
This Southwest deal was found by Cheapflights users on 8/7. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Southwest is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Sat 9/53:50 pm -
1 stop5h 45m
Tue 9/87:40 am -
1 stop3h 30m
Deal found 8/7![Southwest logo]()
$246
This Delta deal was found by Cheapflights users on 8/7. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Delta is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Fri 9/116:00 pm -
1 stop6h 59m
Sat 9/123:40 pm -
1 stop5h 19m
Deal found 8/7![Delta logo]()
$246
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 August 9, 2026.
Search for one-way flight options from Louisville to Illinois. Find affordable one-way fares based on user searches. Data last updated August 9, 2026.
This Southwest deal was found by Cheapflights users on 8/9. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Southwest is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Fri 9/117:10 pm -
Nonstop1h 15m
Deal found 8/9![Southwest logo]()
$90
This Southwest deal was found by Cheapflights users on 8/9. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Southwest is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Wed 9/98:45 am -
Nonstop1h 15m
Deal found 8/9![Southwest logo]()
$92
This Kiwi.com deal was found by Cheapflights users on 8/9. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Kiwi.com is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Mon 10/57:21 pm -
1 stop20h 59m
Deal found 8/9![Multiple Airlines logo]()
$104
This United Airlines deal was found by Cheapflights users on 8/6. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure United Airlines is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Sat 9/59:00 am -
Nonstop1h 41m
Deal found 8/6![United Airlines logo]()
$109
This Southwest deal was found by Cheapflights users on 8/6. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Southwest is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Sat 9/54:55 pm -
Nonstop1h 20m
Deal found 8/6![Southwest logo]()
$109
This Kiwi.com deal was found by Cheapflights users on 8/6. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Kiwi.com is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Sun 10/49:51 pm -
1 stop23h 21m
Deal found 8/6![Allegiant Air logo]()
$116
This American Airlines deal was found by Cheapflights users on 8/7. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure American Airlines is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Sat 10/32:47 pm -
Nonstop1h 43m
Deal found 8/7![American Airlines logo]()
$118
This Southwest deal was found by Cheapflights users on 8/5. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Southwest is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Wed 8/266:45 pm -
Nonstop1h 15m
Deal found 8/5![Southwest logo]()
$118
This Delta deal was found by Cheapflights users on 8/7. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Delta is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Sat 9/512:35 pm -
1 stop6h 06m
Deal found 8/7![Delta logo]()
$119
This Delta deal was found by Cheapflights users on 8/7. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Delta is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Sat 9/55:50 pm -
1 stop5h 46m
Deal found 8/7![Delta logo]()
$119
This Delta deal was found by Cheapflights users on 8/7. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Delta is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Sat 10/37:55 am -
1 stop3h 42m
Deal found 8/7![Delta logo]()
$128
This Kiwi.com deal was found by Cheapflights users on 8/8. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Kiwi.com is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Mon 8/3111:19 am -
1 stop26h 31m
Deal found 8/8![Multiple Airlines logo]()
$131
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 August 9, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $199 (Southwest) |
One-way from | $90 (Southwest) |
Popular in | January |
Cheapest in | December |
Average price | $375 |
Good round-trip deal | $335 or less |
Good one-way deal | $184 or less |
Cheapflights Fare Finder
Ā
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 August 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
SDFĀ Louisville Intl - MDWĀ Chicago Midway
SDFMDW
Louisville Intl
Sat 9/5
4:55 pm-5:15 pm
Nonstop1h 20m
Chicago Midway
Sun 9/6
8:55 am-2:30 pm
1 stop4h 35m
$227
LouisvilleChicago
SDFĀ Louisville Intl - ORDĀ Chicago O'Hare Intl
SDFORD
Louisville Intl
Thu 9/17
7:10 am-7:50 am
Nonstop1h 40m
Chicago O'Hare Intl
Mon 9/21
9:20 pm-11:56 pm
Nonstop1h 36m
$235
LouisvilleChicago
SDFĀ Louisville Intl - ORDĀ Chicago O'Hare Intl
SDFORD
Louisville Intl
Wed 11/11
7:00 am-7:45 am
Nonstop1h 45m
Chicago O'Hare Intl
Mon 11/16
4:00 pm-6:32 pm
Nonstop1h 32m
$235
LouisvilleChicago
SDFĀ Louisville Intl - MDWĀ Chicago Midway
SDFMDW
Louisville Intl
Thu 9/17
2:15 pm-2:30 pm
Nonstop1h 15m
Chicago Midway
Mon 9/21
8:00 am-10:25 am
Nonstop1h 25m
$235
LouisvilleChicago
SDFĀ Louisville Intl - ORDĀ Chicago O'Hare Intl
SDFORD
Louisville Intl
Mon 10/19
9:04 am-9:45 am
Nonstop1h 41m
Chicago O'Hare Intl
Mon 10/19
9:25 pm-11:59 pm
Nonstop1h 34m
$235
Quickest round-trip
LouisvilleChicago
SDFĀ Louisville Intl - MDWĀ Chicago Midway
SDFMDW
Louisville Intl
Tue 10/20
2:05 pm-2:20 pm
Nonstop1h 15m
Chicago Midway
Tue 10/27
6:00 pm-8:10 pm
Nonstop1h 10m
$235
LouisvilleChicago
SDFĀ Louisville Intl - ORDĀ Chicago O'Hare Intl
SDFORD
Louisville Intl
Sat 9/5
5:50 pm-11:57 pm
1 stop7h 07m
Chicago O'Hare Intl
Sun 9/6
6:00 am-11:55 am
1 stop4h 55m
$237
LouisvilleChicago
SDFĀ Louisville Intl - MDWĀ Chicago Midway
SDFMDW
Louisville Intl
Mon 9/14
2:15 pm-2:30 pm
Nonstop1h 15m
Chicago Midway
Mon 9/14
6:10 pm-8:30 pm
Nonstop1h 20m
$258
LouisvilleChicago
SDFĀ Louisville Intl - MDWĀ Chicago Midway
SDFMDW
Louisville Intl
Sat 9/5
6:45 am-1:20 pm
2 stops7h 35m
Chicago Midway
Tue 9/8
7:40 am-12:10 pm
1 stop3h 30m
$260
LouisvilleChicago
SDFĀ Louisville Intl - MDWĀ Chicago Midway
SDFMDW
Louisville Intl
Thu 8/27
9:00 am-9:15 am
Nonstop1h 15m
Chicago Midway
Fri 8/28
9:00 am-3:30 pm
1 stop5h 30m
$268
Showing 1-10 of 52 resultsSorted by cheapest first
Best time to book a flight from Louisville to Illinois
Have a flexible travel schedule? Discover the best time to fly to Illinois from Louisville with our price prediction graph.
SDF-MDW
SDF-ORD
SDF-MLI
SDF-STL
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-MLI
SDF-STL
What is the cheapest month to book a flight from Louisville to Illinois?
Currently, November is the cheapest month in which you can book a flight from Louisville to Illinois (average of $231). Flying from Louisville to Illinois in June is currently the most expensive (average of $390). 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 August 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 31% versus a flight at noon.
Weekly flight availability from Louisville to Illinois
Explore weekly flight availability from Louisville to Illinois. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated August 9, 2026.
The most flights from SDF to USIL are scheduled on a Friday (38 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (17 on average).
How much does it cost to fly round-trip from Louisville to Illinois?
Airfare is below average for this route at the moment.
Louisville to Illinois flights typically cost between $279 and $543 in September.The cheapest round-trip price found within the last 5 days was $217 on United Airlines (Sep 5-Sep 6).
How far ahead should I book a flight from Louisville to Illinois?
The price you pay for your flight from Louisville to Illinois may vary depending on when you book. For the best chance of a lower fare, look to book 52 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
What is the cheapest day to fly from Louisville to Illinois?
Use this chart to determine the cheapest time to fly round-trip from Louisville to Illinois. Price data was last updated on August 8, 2026.
Travelers seeking maximum savings on their Louisville to Illinois flight should consider departing on Saturday afternoons when fares are most often at their lowest. Saturday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
Reviews of airlines servicing Illinois
Get insights into the airlines that provide service to Illinois. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Illinois. Reviews last updated August 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.
Comfort
8.0
Entertainment
7.5
Boarding
8.1
Overall
8.0
Crew
8.6
Food
7.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Comfort
8.0
Entertainment
7.5
Boarding
8.1
Overall
8.0
Crew
8.6
Food
7.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Comfort
8.0
Entertainment
7.5
Boarding
8.1
Overall
8.0
Crew
8.6
Food
7.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Comfort
8.0
Entertainment
7.5
Boarding
8.1
Overall
8.0
Crew
8.6
Food
7.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Related info for your journey
Find useful and relevant information for your journey from Louisville to Illinois. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for Louisville to Illinois
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Complete your trip
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 August 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 August 9, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$97 | Average$297 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$152 | Average$296 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$157 | Average$356 | FlexibilityNo cancel fee | On-time69% |