$99+ Cheap flights from Kentucky to Illinois
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/9. Fares are subject to change and may not be available on all flights or dates of travel.
SDF — ORD
Dec 5 — Dec 121
Round-trip
1 adult, Economy
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Find cheap flights from Kentucky to Illinois with Cheapflights
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Cheapest flights from Kentucky to IllinoisExplore the most affordable flight options available from Kentucky to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 5, 2026.
Explore the most affordable flight options available from Kentucky to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 5, 2026.
This United Airlines deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/195:30 am -
Nonstop1h 29m
Thu 11/2612:14 pm -
Nonstop1h 27m
Deal found 11/3![United Airlines logo]()
$194
This United Airlines deal was found by Cheapflights users on 11/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/292:25 pm -
Nonstop1h 50m
Sun 12/69:20 pm -
Nonstop1h 34m
Deal found 11/1![United Airlines logo]()
$196
This United Airlines deal was found by Cheapflights users on 11/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/87:10 am -
Nonstop1h 45m
Thu 12/109:20 pm -
Nonstop1h 29m
Deal found 11/1![United Airlines logo]()
$197
This Southwest deal was found by Cheapflights users on 11/5. 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 12/87:35 pm -
Nonstop1h 15m
Thu 12/108:15 am -
Nonstop1h 15m
Deal found 11/5![Southwest logo]()
$197
This American Airlines deal was found by Cheapflights users on 11/5. 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.
Thu 12/310:13 am -
Nonstop1h 47m
Mon 12/77:00 pm -
Nonstop1h 38m
Deal found 11/5![American Airlines logo]()
$198
This Southwest deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/45:40 am -
1 stop4h 20m
Sat 12/57:55 am -
Nonstop1h 20m
Deal found 11/3![Southwest logo]()
$207
This Southwest deal was found by Cheapflights users on 10/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/234:40 pm -
Nonstop1h 20m
Thu 11/267:40 am -
2 stops7h 05m
Deal found 10/31![Southwest logo]()
$212
This Delta deal was found by Cheapflights users on 11/4. 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.
Tue 12/83:02 pm -
1 stop5h 07m
Thu 12/106:20 am -
1 stop4h 49m
Deal found 11/4![Delta logo]()
$217
This Delta deal was found by Cheapflights users on 11/5. 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.
Thu 12/103:18 pm -
1 stop3h 43m
Fri 12/111:41 pm -
1 stop6h 36m
Deal found 11/5![Delta logo]()
$217
This Southwest deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/1712:05 pm -
2 stops9h 00m
Thu 12/2411:25 am -
2 stops8h 15m
Deal found 11/2![Southwest logo]()
$227
This Southwest deal was found by Cheapflights users on 10/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/257:15 pm -
1 stop6h 05m
Fri 11/2711:10 am -
2 stops10h 05m
Deal found 10/31![Southwest logo]()
$228
This Southwest deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/257:20 am -
2 stops9h 10m
Sat 1/307:55 am -
2 stops6h 15m
Deal found 11/3![Southwest logo]()
$233
Best flights from Kentucky to IllinoisDiscover carefully curated flight deals from Kentucky to Illinois that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated November 5, 2026.
Discover carefully curated flight deals from Kentucky to Illinois that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated November 5, 2026.
This United Airlines deal was found by Cheapflights users on 11/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/25:00 am -
Nonstop1h 29m
Wed 12/911:50 am -
Nonstop1h 27m
Deal found 11/1![United Airlines logo]()
$194
This Southwest deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/252:05 pm -
Nonstop1h 20m
Sat 1/303:35 pm -
Nonstop1h 10m
Deal found 11/3![Southwest logo]()
$197
This Delta deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/276:25 am -
1 stop6h 37m
Sat 1/307:10 am -
1 stop7h 02m
Deal found 11/2![Delta logo]()
$217
This American Airlines deal was found by Cheapflights users on 11/5. 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.
Fri 2/266:19 am -
1 stop5h 32m
Sat 2/276:55 am -
1 stop4h 49m
Deal found 11/5![American Airlines logo]()
$329
This United Airlines deal was found by Cheapflights users on 11/5. 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.
Thu 1/72:05 pm -
Nonstop1h 48m
Tue 1/121:55 pm -
Nonstop1h 40m
Deal found 11/5![United Airlines logo]()
$197
This Southwest deal was found by Cheapflights users on 11/4. 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.
Wed 12/307:15 pm -
1 stop6h 05m
Fri 1/11:20 pm -
Nonstop1h 15m
Deal found 11/4![Southwest logo]()
$207
This United Airlines deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/255:57 pm -
Nonstop1h 52m
Thu 11/2610:45 am -
Nonstop1h 33m
Deal found 11/3![United Airlines logo]()
$197
This Delta deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/255:40 pm -
1 stop3h 37m
Thu 11/2611:18 am -
1 stop3h 41m
Deal found 11/3![Delta logo]()
$217
This Southwest deal was found by Cheapflights users on 10/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/207:30 am -
2 stops7h 50m
Fri 1/228:25 am -
Nonstop1h 25m
Deal found 10/31![Southwest logo]()
$212
This Delta deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/83:02 pm -
1 stop5h 07m
Thu 12/106:20 am -
1 stop4h 49m
Deal found 11/3![Delta logo]()
$217
This Delta deal was found by Cheapflights users on 11/4. 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.
Wed 12/306:56 pm -
1 stop6h 06m
Fri 1/17:00 am -
1 stop3h 50m
Deal found 11/4![Delta logo]()
$217
This Kiwi.com deal was found by Cheapflights users on 11/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/185:18 pm -
1 stop24h 49m
Sun 11/298:42 pm -
1 stop17h 07m
Deal found 11/1![Multiple Airlines logo]()
$541
This Southwest deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/277:30 am -
2 stops7h 50m
Sat 1/307:55 am -
2 stops6h 15m
Deal found 11/2![Southwest logo]()
$227
This United Airlines deal was found by Cheapflights users on 11/5. 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 11/205:30 am -
Nonstop1h 29m
Tue 11/2412:14 pm -
Nonstop1h 27m
Deal found 11/5![United Airlines logo]()
$234
This Delta deal was found by Cheapflights users on 11/5. 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.
Thu 1/710:26 am -
1 stop6h 31m
Tue 1/129:50 am -
1 stop4h 22m
Deal found 11/5![Delta logo]()
$217
This Southwest deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/83:50 pm -
1 stop4h 15m
Thu 12/108:15 am -
Nonstop1h 15m
Deal found 11/3![Southwest logo]()
$234
This United Airlines deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/275:00 am -
Nonstop1h 39m
Sun 2/2812:00 pm -
Nonstop1h 34m
Deal found 11/3![United Airlines logo]()
$234
This Delta deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/111:04 pm -
1 stop4h 12m
Fri 12/189:37 am -
1 stop4h 11m
Deal found 11/3![Delta logo]()
$217
This Southwest deal was found by Cheapflights users on 11/5. 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 12/155:40 am -
1 stop4h 20m
Wed 12/168:15 am -
Nonstop1h 15m
Deal found 11/5![Southwest logo]()
$234
This United Airlines deal was found by Cheapflights users on 11/5. 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.
Thu 12/245:00 am -
Nonstop1h 32m
Fri 1/811:59 am -
Nonstop1h 29m
Deal found 11/5![United Airlines logo]()
$234
This United Airlines deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/252:25 pm -
Nonstop1h 50m
Sat 11/289:30 pm -
Nonstop1h 35m
Deal found 11/3![United Airlines logo]()
$236
This Southwest deal was found by Cheapflights users on 11/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/114:40 pm -
Nonstop1h 20m
Sun 12/137:45 am -
Nonstop1h 20m
Deal found 11/1![Southwest logo]()
$253
This United Airlines deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/22:40 pm -
Nonstop1h 47m
Sat 12/59:20 pm -
Nonstop1h 34m
Deal found 11/2![United Airlines logo]()
$236
This Delta deal was found by Cheapflights users on 11/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/610:59 am -
1 stop6h 18m
Tue 12/811:39 am -
1 stop4h 37m
Deal found 11/1![Delta logo]()
$273
This Delta deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/257:20 am -
1 stop6h 46m
Sat 1/307:10 am -
1 stop7h 02m
Deal found 11/3![Delta logo]()
$273
This United Airlines deal was found by Cheapflights users on 11/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/295:30 am -
Nonstop1h 29m
Sun 12/611:50 am -
Nonstop1h 27m
Deal found 11/1![United Airlines logo]()
$268
This American Airlines deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/105:55 am -
2 stops12h 32m
Mon 12/146:00 am -
2 stops14h 25m
Deal found 11/2![American Airlines logo]()
$525
This Delta deal was found by Cheapflights users on 11/5. 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.
Thu 2/45:59 pm -
1 stop6h 58m
Sun 2/75:30 am -
1 stop5h 40m
Deal found 11/5![Delta logo]()
$278
This United Airlines deal was found by Cheapflights users on 11/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/25:00 am -
Nonstop1h 29m
Tue 12/811:50 am -
Nonstop1h 27m
Deal found 11/1![United Airlines logo]()
$268
This United Airlines deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/185:30 am -
Nonstop1h 29m
Sun 11/2212:14 pm -
Nonstop1h 27m
Deal found 11/3![United Airlines logo]()
$290
Last-minute flights from Kentucky to IllinoisDiscover last-minute flight deals from Kentucky to Illinois. Data last updated November 5, 2026 and is based on user searches.
Discover last-minute flight deals from Kentucky to Illinois. Data last updated November 5, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/195:30 am -
Nonstop1h 29m
Thu 11/2612:14 pm -
Nonstop1h 27m
Deal found 11/3![United Airlines logo]()
$194
This Southwest deal was found by Cheapflights users on 10/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/234:40 pm -
Nonstop1h 20m
Thu 11/267:40 am -
2 stops7h 05m
Deal found 10/31![Southwest logo]()
$212
This Southwest deal was found by Cheapflights users on 10/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/257:15 pm -
1 stop6h 05m
Fri 11/2711:10 am -
2 stops10h 05m
Deal found 10/31![Southwest logo]()
$228
This American Airlines deal was found by Cheapflights users on 11/5. 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.
Thu 12/310:13 am -
Nonstop1h 47m
Mon 12/77:00 pm -
Nonstop1h 38m
Deal found 11/5![American Airlines logo]()
$198
This Southwest deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/45:40 am -
1 stop4h 20m
Sat 12/57:55 am -
Nonstop1h 20m
Deal found 11/3![Southwest logo]()
$207
This United Airlines deal was found by Cheapflights users on 11/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/87:10 am -
Nonstop1h 45m
Thu 12/109:20 pm -
Nonstop1h 29m
Deal found 11/1![United Airlines logo]()
$197
This Southwest deal was found by Cheapflights users on 11/5. 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 12/87:35 pm -
Nonstop1h 15m
Thu 12/108:15 am -
Nonstop1h 15m
Deal found 11/5![Southwest logo]()
$197
This Delta deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/83:02 pm -
1 stop5h 07m
Thu 12/106:20 am -
1 stop4h 49m
Deal found 11/3![Delta logo]()
$217
This Delta deal was found by Cheapflights users on 11/5. 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.
Thu 12/103:18 pm -
1 stop3h 43m
Fri 12/111:41 pm -
1 stop6h 36m
Deal found 11/5![Delta logo]()
$217
This Southwest deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/1712:05 pm -
2 stops9h 00m
Thu 12/2411:25 am -
2 stops8h 15m
Deal found 11/2![Southwest logo]()
$227
This United Airlines deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/245:00 am -
Nonstop1h 32m
Fri 1/811:59 am -
Nonstop1h 29m
Deal found 11/3![United Airlines logo]()
$234
This Southwest deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/257:20 am -
2 stops9h 10m
Sat 1/307:55 am -
2 stops6h 15m
Deal found 11/3![Southwest logo]()
$233
One-way flights from Kentucky to IllinoisSearch for one-way flight options from Kentucky to Illinois. Find affordable one-way fares based on user searches. Data last updated November 5, 2026.
Search for one-way flight options from Kentucky to Illinois. Find affordable one-way fares based on user searches. Data last updated November 5, 2026.
This American Airlines deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/910:17 am -
Nonstop1h 48m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/2![American Airlines logo]()
$99
This Southwest deal was found by Cheapflights users on 11/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/234:40 pm -
Nonstop1h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/1![Southwest logo]()
$99
This Kiwi.com deal was found by Cheapflights users on 11/4. 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 1/118:41 pm -
1 stop29h 09m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/4![Multiple Airlines logo]()
$105
This Delta deal was found by Cheapflights users on 11/4. 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.
Sat 1/95:40 am -
1 stop5h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/4![Delta logo]()
$109
This Delta deal was found by Cheapflights users on 11/4. 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.
Sat 1/97:30 am -
1 stop6h 47m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/4![Delta logo]()
$109
This Southwest deal was found by Cheapflights users on 11/4. 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 1/115:45 am -
2 stops10h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/4![Southwest logo]()
$114
This Kiwi.com deal was found by Cheapflights users on 11/4. 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.
Thu 12/34:55 pm -
1 stop22h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/4![Multiple Airlines logo]()
$124
This Kiwi.com deal was found by Cheapflights users on 11/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/236:54 pm -
1 stop29h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/1![Multiple Airlines logo]()
$124
This Southwest deal was found by Cheapflights users on 11/4. 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 3/17:25 am -
Nonstop1h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/4![Southwest logo]()
$126
This Delta deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 1/185:59 pm -
1 stop6h 58m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/3![Delta logo]()
$140
This deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/253:14 pm -
1 stop3h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/3![Delta logo]()
$140
This United Airlines deal was found by Cheapflights users on 11/5. 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.
Thu 11/2610:27 am -
Nonstop1h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/5![United Airlines logo]()
$144
Find flight deals from Kentucky to Illinois
Keep the following information in mind while searching for Kentucky to Illinois flight deals. Data was last updated November 5, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $194 (United Airlines) |
One-way from | $99 (American Airlines) |
Popular in | August |
Cheapest in | January |
Average price | $313 |
Good round-trip deal | $236 or less |
Good one-way deal | $224 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Kentucky to Illinois that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated November 5, 2026.
Use the filters below to find and compare flights from Kentucky to Illinois that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
LouisvilleChicago
SDF Louisville Intl - ORD Chicago O'Hare Intl
SDFORD
Louisville Intl
Mon 1/18
1:11 pm-1:57 pm
Nonstop1h 46m
Chicago O'Hare Intl
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$99
LouisvilleChicago
SDF Louisville Intl - ORD Chicago O'Hare Intl
SDFORD
Louisville Intl
Wed 11/25
10:37 am-11:22 am
Nonstop1h 45m
Chicago O'Hare Intl
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$99
LouisvilleChicago
SDF Louisville Intl - MDW Chicago Midway
SDFMDW
Louisville Intl
Wed 11/25
2:10 pm-2:30 pm
Nonstop1h 20m
Chicago Midway
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$99
LouisvilleChicago
SDF Louisville Intl - ORD Chicago O'Hare Intl
SDFORD
Louisville Intl
Fri 11/27
1:14 pm-1:57 pm
Nonstop1h 43m
Chicago O'Hare Intl
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$99
LouisvilleChicago
SDF Louisville Intl - ORD Chicago O'Hare Intl
SDFORD
Louisville Intl
Mon 11/23
5:10 am-5:55 am
Nonstop1h 45m
Chicago O'Hare Intl
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$99
LouisvilleChicago
SDF Louisville Intl - ORD Chicago O'Hare Intl
SDFORD
Louisville Intl
Fri 11/27
6:42 am-11:48 am
1 stop6h 06m
Chicago O'Hare Intl
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$109
LouisvilleChicago
SDF Louisville Intl - ORD Chicago O'Hare Intl
SDFORD
Louisville Intl
Wed 12/9
5:59 pm-11:56 pm
1 stop6h 57m
Chicago O'Hare Intl
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$109
LouisvilleChicago
SDF Louisville Intl - MDW Chicago Midway
SDFMDW
Louisville Intl
Mon 11/23
5:10 pm-11:10 pm
1 stop7h 00m
Chicago Midway
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$109
LouisvilleChicago
SDF Louisville Intl - MDW Chicago Midway
SDFMDW
Louisville Intl
Tue 11/24
7:50 am-12:51 pm
1 stop6h 01m
Chicago Midway
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$109
LouisvilleChicago
SDF Louisville Intl - MDW Chicago Midway
SDFMDW
Louisville Intl
Wed 12/9
7:05 am-10:28 am
1 stop4h 23m
Chicago Midway
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$109
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Kentucky to Illinois
Have a flexible travel schedule? Discover the best time to fly to Illinois from Kentucky with our price prediction graph.
SDF-ORD
SDF-MDW
LEX-ORD
PAH-ORD
LEX-MDW
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 Kentucky to Illinois
USKY-USIL
SDF-ORD
SDF-MDW
LEX-ORD
PAH-ORD
What is the cheapest month to book a flight from Kentucky to Illinois?
Currently, March is the cheapest month in which you can book a flight from Kentucky to Illinois (average of $275). Flying from Kentucky to Illinois in October is currently the most expensive (average of $394). 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 KY to IL?
Find hourly flight availability from Kentucky 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 November 5, 2026.
A simple way to save on the total cost of your ticket is to fly from Kentucky to Illinois in the morning. If you’re flexible enough to do this you can expect to save up to 39% on your trip compared to booking a flight in the evening.
Weekly flight availability from Kentucky to Illinois
Explore weekly flight availability from Kentucky 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 November 5, 2026.
The most flights from USKY to USIL are scheduled on a Wednesday (45 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (12 on average).
How much does it cost to fly round-trip from Kentucky to Illinois?
Airfare is below average for this route at the moment.
Kentucky to Illinois flights typically cost between $228 and $365 in December.The cheapest round-trip price found within the last 5 days was $197 on United Airlines (Dec 8-Dec 10).
How far ahead should I book a flight from Kentucky to Illinois?
The best time to book flights from Kentucky to Illinois is 41 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
What is the cheapest day to fly from Kentucky to Illinois?
Use this chart to determine the cheapest time to fly round-trip from Kentucky to Illinois. Price data was last updated on October 31, 2026.
Travelers seeking maximum savings on their Kentucky to Illinois flight should consider departing on Sunday mornings when fares are most often at their lowest. Tuesday evenings 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 November 5, 2026.
Read through reviews of airlines operating flights from Kentucky to Illinois, such as Southwest,Contour, andUnited Airlines. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Overall
8.0
Comfort
8.0
Food
7.0
Crew
8.6
Entertainment
7.5
Boarding
8.1
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Overall
8.0
Comfort
8.0
Food
7.0
Crew
8.6
Entertainment
7.5
Boarding
8.1
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Overall
8.0
Comfort
8.0
Food
7.0
Crew
8.6
Entertainment
7.5
Boarding
8.1
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Overall
8.0
Comfort
8.0
Food
7.0
Crew
8.6
Entertainment
7.5
Boarding
8.1
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Overall
8.0
Comfort
8.0
Food
7.0
Crew
8.6
Entertainment
7.5
Boarding
8.1
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Related info for your journey
Find useful and relevant information for your journey from Kentucky to Illinois. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Browse thousands of different options on Cheapflights for your next trip
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Alternative routes for Kentucky 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 Kentucky to Illinois by cabin class
Find flights from Kentucky to Illinois, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Kentucky and Illinois flights
Browse other Kentucky and Illinois flight options. Last updated on November 5, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Find a return flight route from Illinois
Find the right flight back to Kentucky after your stay in Illinois
Kentucky to Illinois flights
Consider these flights traveling from Kentucky to Illinois.
Top 4 airlines flying from Kentucky to Illinois
Discover the top 4 airlines that operate flights from Kentucky to Illinois. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated November 5, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$59 | Average$167 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$193 | Average$337 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$194 | Average$347 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$208 | Average$320 | FlexibilityNo cancel fee | On-time71% |