$49+ Cheap flights from Illinois to Kentucky
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 8/13. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SDF
Jul 22 — Jul 291
Round-trip
1 adult, Economy
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Find cheap flights from Illinois to Kentucky with Cheapflights
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Cheapest flights from Illinois to KentuckyExplore the most affordable flight options available from Illinois to Kentucky. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 22, 2026.
Explore the most affordable flight options available from Illinois to Kentucky. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 22, 2026.
This Southwest deal was found by Cheapflights users on 6/17. 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.
Wed 7/810:15 am
STL
- BNA
Nonstop1h 10m
Southwest
Tue 7/149:45 pm
BNA
- STL
Nonstop1h 20m
Southwest
Deal found 6/17![Southwest logo]()
$109
This Southwest deal was found by Cheapflights users on 6/18. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/110:45 am
STL
- BNA
2 stops5h 15m
Southwest
Wed 9/23:35 pm
BNA
- STL
Nonstop1h 10m
Southwest
Deal found 6/18![Southwest logo]()
$124
This Cheapflightsfares deal was found by Cheapflights users on 6/17. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/62:49 pm
MDW
- TYS
Nonstop1h 30m
Allegiant Air
Sun 8/91:23 pm
TYS
- MDW
Nonstop1h 36m
Allegiant Air
Deal found 6/17![Allegiant Air logo]()
$139
This Cheapflightsfares deal was found by Cheapflights users on 6/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/92:48 pm
MDW
- TYS
Nonstop1h 30m
Allegiant Air
Sun 7/121:22 pm
TYS
- MDW
Nonstop1h 36m
Allegiant Air
Deal found 6/19![Allegiant Air logo]()
$140
This Trip.com deal was found by Cheapflights users on 6/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/232:48 pm
MDW
- TYS
Nonstop1h 30m
Allegiant Air
Sun 7/261:22 pm
TYS
- MDW
Nonstop1h 36m
Allegiant Air
Deal found 6/20![Allegiant Air logo]()
$142
This Cheapflightsfares deal was found by Cheapflights users on 6/17. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/512:56 pm
MDW
- TYS
Nonstop1h 25m
Allegiant Air
Mon 10/1212:04 pm
TYS
- MDW
Nonstop1h 32m
Allegiant Air
Deal found 6/17![Allegiant Air logo]()
$143
This Cheapflightsfares deal was found by Cheapflights users on 6/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/162:48 pm
MDW
- TYS
Nonstop1h 30m
Allegiant Air
Sun 7/191:22 pm
TYS
- MDW
Nonstop1h 36m
Allegiant Air
Deal found 6/19![Allegiant Air logo]()
$146
This Southwest deal was found by Cheapflights users on 6/17. 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.
Tue 9/17:15 am
STL
- BNA
Nonstop1h 10m
Southwest
Sat 9/55:05 pm
BNA
- STL
Nonstop1h 10m
Southwest
Deal found 6/17![Southwest logo]()
$152
This Cheapflightsfares deal was found by Cheapflights users on 6/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/192:48 pm
MDW
- TYS
Nonstop1h 30m
Allegiant Air
Thu 7/231:22 pm
TYS
- MDW
Nonstop1h 36m
Allegiant Air
Deal found 6/22![Allegiant Air logo]()
$155
This Southwest deal was found by Cheapflights users on 6/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/87:50 am
STL
- BNA
Nonstop1h 10m
Southwest
Mon 8/109:00 am
BNA
- STL
Nonstop1h 10m
Southwest
Deal found 6/21![Southwest logo]()
$156
This Southwest deal was found by Cheapflights users on 6/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/146:15 pm
MDW
- CVG
Nonstop1h 15m
Southwest
Sat 7/189:15 am
CVG
- MDW
Nonstop1h 05m
Southwest
Deal found 6/22![Southwest logo]()
$157
This United Airlines deal was found by Cheapflights users on 6/19. Clicking the “Pick Dates” 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 8/196:50 am
ORD
- CVG
Nonstop1h 26m
United Airlines
Sat 8/222:05 pm
CVG
- ORD
Nonstop1h 34m
United Airlines
Deal found 6/19![United Airlines logo]()
$157
Best flights from Illinois to KentuckyDiscover carefully curated flight deals from Illinois to Kentucky that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 22, 2026.
Discover carefully curated flight deals from Illinois to Kentucky that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 22, 2026.
This Southwest deal was found by Cheapflights users on 6/17. 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.
Wed 7/810:15 am
STL
- BNA
Nonstop1h 10m
Southwest
Tue 7/149:45 pm
BNA
- STL
Nonstop1h 20m
Southwest
Deal found 6/17![Southwest logo]()
$109
This Kiwi.com deal was found by Cheapflights users on 6/18. 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.
Thu 7/166:34 pm
STL
- CVG
1 stop16h 14m
Frontier
Thu 7/2312:18 pm
CVG
- STL
1 stop6h 19m
Frontier
Deal found 6/18![Frontier logo]()
$163
This Delta deal was found by Cheapflights users on 6/21. Clicking the “Pick Dates” 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 8/155:18 pm
ORD
- CVG
1 stop4h 22m
Delta
Tue 8/1810:53 am
CVG
- ORD
1 stop6h 24m
Delta
Deal found 6/21![Delta logo]()
$177
This Kiwi.com deal was found by Cheapflights users on 6/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/242:00 pm
STL
- BNA
1 stop4h 03m
Multiple Airlines
Sun 7/266:00 am
BNA
- STL
2 stops26h 57m
Multiple Airlines
Deal found 6/20![Multiple Airlines logo]()
$232
This Southwest deal was found by Cheapflights users on 6/18. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/112:50 pm
STL
- BNA
1 stop3h 15m
Southwest
Wed 9/212:45 pm
BNA
- STL
Nonstop1h 10m
Southwest
Deal found 6/18![Southwest logo]()
$119
This United Airlines deal was found by Cheapflights users on 6/19. Clicking the “Pick Dates” 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 10/1310:54 am
ORD
- BNA
Nonstop1h 50m
United Airlines
Thu 10/157:34 am
BNA
- ORD
Nonstop1h 58m
United Airlines
Deal found 6/19![United Airlines logo]()
$251
This American Airlines deal was found by Cheapflights users on 6/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/226:30 am
ORD
- LEX
1 stop5h 04m
American Airlines
Sat 7/2511:22 am
LEX
- ORD
Nonstop1h 44m
American Airlines
Deal found 6/22![American Airlines logo]()
$259
This Kiwi.com deal was found by Cheapflights users on 6/18. 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.
Tue 7/216:34 pm
STL
- CVG
1 stop16h 14m
Frontier
Sun 7/2612:18 pm
CVG
- STL
1 stop21h 39m
Frontier
Deal found 6/18![Frontier logo]()
$166
This Southwest deal was found by Cheapflights users on 6/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/87:50 am
STL
- BNA
Nonstop1h 10m
Southwest
Mon 8/109:00 am
BNA
- STL
Nonstop1h 10m
Southwest
Deal found 6/21![Southwest logo]()
$156
This Delta deal was found by Cheapflights users on 6/17. 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.
Wed 7/87:05 am
ORD
- CVG
1 stop5h 30m
Delta
Tue 7/142:15 pm
CVG
- ORD
1 stop5h 14m
Delta
Deal found 6/17![Delta logo]()
$177
This Kiwi.com deal was found by Cheapflights users on 6/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/216:34 pm
STL
- CVG
1 stop16h 14m
Frontier
Tue 7/2812:18 pm
CVG
- STL
1 stop21h 39m
Frontier
Deal found 6/21![Frontier logo]()
$166
This Kiwi.com deal was found by Cheapflights users on 6/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/146:34 pm
STL
- CVG
1 stop16h 14m
Frontier
Thu 7/1612:18 pm
CVG
- STL
1 stop6h 19m
Frontier
Deal found 6/19![Frontier logo]()
$166
This Delta deal was found by Cheapflights users on 6/20. Clicking the “Pick Dates” 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 8/157:00 am
ORD
- CVG
1 stop5h 42m
Delta
Mon 8/174:10 pm
CVG
- ORD
1 stop5h 20m
Delta
Deal found 6/20![Delta logo]()
$196
This Southwest deal was found by Cheapflights users on 6/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/215:30 pm
MDW
- CVG
1 stop4h 40m
Southwest
Tue 7/287:00 am
CVG
- MDW
2 stops7h 35m
Southwest
Deal found 6/19![Southwest logo]()
$182
This Delta deal was found by Cheapflights users on 6/18. 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.
Thu 12/107:20 am
STL
- BNA
1 stop5h 01m
Delta
Sat 12/121:25 pm
BNA
- STL
1 stop4h 36m
Delta
Deal found 6/18![Delta logo]()
$205
This Southwest deal was found by Cheapflights users on 6/17. 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.
Thu 8/68:05 am
MDW
- CVG
Nonstop1h 20m
Southwest
Mon 8/107:00 pm
CVG
- MDW
Nonstop1h 10m
Southwest
Deal found 6/17![Southwest logo]()
$195
This United Airlines deal was found by Cheapflights users on 6/20. Clicking the “Pick Dates” 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 8/209:27 pm
ORD
- CVG
Nonstop1h 28m
United Airlines
Sun 8/232:05 pm
CVG
- ORD
Nonstop1h 34m
United Airlines
Deal found 6/20![United Airlines logo]()
$262
This Southwest deal was found by Cheapflights users on 6/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/82:25 pm
MDW
- CVG
1 stop3h 25m
Southwest
Mon 8/105:25 pm
CVG
- MDW
1 stop5h 55m
Southwest
Deal found 6/21![Southwest logo]()
$196
This American Airlines deal was found by Cheapflights users on 6/18. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/38:16 am
ORD
- LEX
Nonstop1h 34m
American Airlines
Mon 7/610:48 am
LEX
- ORD
1 stop6h 58m
American Airlines
Deal found 6/18![American Airlines logo]()
$289
This United Airlines deal was found by Cheapflights users on 6/20. Clicking the “Pick Dates” 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 7/106:55 am
ORD
- TYS
Nonstop1h 48m
United Airlines
Sun 7/126:00 am
TYS
- ORD
Nonstop1h 59m
United Airlines
Deal found 6/20![United Airlines logo]()
$264
This Kiwi.com deal was found by Cheapflights users on 6/17. 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.
Thu 8/66:34 pm
STL
- CVG
1 stop16h 14m
Frontier
Mon 8/109:30 pm
CVG
- STL
2 stops21h 07m
Frontier
Deal found 6/17![Frontier logo]()
$219
This Delta deal was found by Cheapflights users on 6/21. Clicking the “Pick Dates” 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 7/149:19 am
MDW
- CVG
1 stop4h 57m
Delta
Sat 7/182:15 pm
CVG
- MDW
1 stop4h 52m
Delta
Deal found 6/21![Delta logo]()
$228
This United Airlines deal was found by Cheapflights users on 6/21. Clicking the “Pick Dates” 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 7/410:30 am
ORD
- TYS
Nonstop1h 49m
United Airlines
Sun 7/126:00 am
TYS
- ORD
Nonstop1h 59m
United Airlines
Deal found 6/21![United Airlines logo]()
$274
This Southwest deal was found by Cheapflights users on 6/18. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/255:40 am
STL
- BNA
2 stops6h 00m
Southwest
Wed 7/296:25 am
BNA
- STL
Nonstop1h 20m
Southwest
Deal found 6/18![Southwest logo]()
$214
This Frontier deal was found by Cheapflights users on 6/18. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/174:09 pm
STL
- CVG
1 stop6h 37m
Frontier
Sun 7/1912:18 pm
CVG
- STL
1 stop6h 19m
Frontier
Deal found 6/18![Frontier logo]()
$248
This United Airlines deal was found by Cheapflights users on 6/17. 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.
Wed 9/163:40 pm
ORD
- BNA
Nonstop1h 52m
United Airlines
Thu 9/179:52 am
BNA
- ORD
Nonstop2h 00m
United Airlines
Deal found 6/17![United Airlines logo]()
$275
This Delta deal was found by Cheapflights users on 6/20. Clicking the “Pick Dates” 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 8/82:30 pm
ORD
- SDF
1 stop5h 49m
Delta
Mon 8/1010:34 am
SDF
- ORD
1 stop6h 43m
Delta
Deal found 6/20![Delta logo]()
$255
This Southwest deal was found by Cheapflights users on 6/20. Clicking the “Pick Dates” 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 9/107:30 am
MDW
- CVG
1 stop5h 05m
Southwest
Mon 9/145:25 pm
CVG
- MDW
1 stop5h 55m
Southwest
Deal found 6/20![Southwest logo]()
$215
This Delta deal was found by Cheapflights users on 6/21. Clicking the “Pick Dates” 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 9/2310:44 am
ORD
- BNA
1 stop3h 55m
Delta
Sat 9/266:40 am
BNA
- ORD
1 stop6h 18m
Delta
Deal found 6/21![Delta logo]()
$257
This United Airlines deal was found by Cheapflights users on 6/18. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/232:20 pm
ORD
- CVG
Nonstop1h 29m
United Airlines
Fri 7/247:54 pm
CVG
- ORD
Nonstop1h 40m
United Airlines
Deal found 6/18![United Airlines logo]()
$287
Last-minute flights from Illinois to KentuckyDiscover last-minute flight deals from Illinois to Kentucky. Data last updated June 22, 2026 and is based on user searches.
Discover last-minute flight deals from Illinois to Kentucky. Data last updated June 22, 2026 and is based on user searches.
This Cheapflightsfares deal was found by Cheapflights users on 6/17. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/52:48 pm
MDW
- TYS
Nonstop1h 30m
Allegiant Air
Thu 7/91:22 pm
TYS
- MDW
Nonstop1h 36m
Allegiant Air
Deal found 6/17![Allegiant Air logo]()
$162
This Southwest deal was found by Cheapflights users on 6/17. 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.
Wed 7/810:15 am
STL
- BNA
Nonstop1h 10m
Southwest
Tue 7/149:45 pm
BNA
- STL
Nonstop1h 20m
Southwest
Deal found 6/17![Southwest logo]()
$109
This Cheapflightsfares deal was found by Cheapflights users on 6/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/92:48 pm
MDW
- TYS
Nonstop1h 30m
Allegiant Air
Sun 7/121:22 pm
TYS
- MDW
Nonstop1h 36m
Allegiant Air
Deal found 6/19![Allegiant Air logo]()
$140
This Cheapflightsfares deal was found by Cheapflights users on 6/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/122:48 pm
MDW
- TYS
Nonstop1h 30m
Allegiant Air
Sun 7/191:22 pm
TYS
- MDW
Nonstop1h 36m
Allegiant Air
Deal found 6/21![Allegiant Air logo]()
$166
This Kiwi.com deal was found by Cheapflights users on 6/19. Clicking the “Pick Dates” 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 7/132:00 pm
STL
- BNA
1 stop4h 03m
Southern / Mokulele
Wed 7/159:30 am
BNA
- STL
1 stop3h 51m
Southern / Mokulele
Deal found 6/19![Southern / Mokulele logo]()
$171
This Southwest deal was found by Cheapflights users on 6/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/146:15 pm
MDW
- CVG
Nonstop1h 15m
Southwest
Sat 7/189:15 am
CVG
- MDW
Nonstop1h 05m
Southwest
Deal found 6/22![Southwest logo]()
$157
This United Airlines deal was found by Cheapflights users on 6/22. Clicking the “Pick Dates” 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 7/146:00 pm
ORD
- CVG
Nonstop1h 33m
United Airlines
Wed 7/159:08 am
CVG
- ORD
Nonstop1h 37m
United Airlines
Deal found 6/22![United Airlines logo]()
$157
This Kiwi.com deal was found by Cheapflights users on 6/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/146:34 pm
STL
- CVG
1 stop16h 14m
Frontier
Thu 7/1612:18 pm
CVG
- STL
1 stop6h 19m
Frontier
Deal found 6/19![Frontier logo]()
$166
This Cheapflightsfares deal was found by Cheapflights users on 6/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/162:48 pm
MDW
- TYS
Nonstop1h 30m
Allegiant Air
Sun 7/191:22 pm
TYS
- MDW
Nonstop1h 36m
Allegiant Air
Deal found 6/19![Allegiant Air logo]()
$146
This Kiwi.com deal was found by Cheapflights users on 6/18. 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.
Thu 7/166:34 pm
STL
- CVG
1 stop16h 14m
Frontier
Thu 7/2312:18 pm
CVG
- STL
1 stop6h 19m
Frontier
Deal found 6/18![Frontier logo]()
$163
This Kiwi.com deal was found by Cheapflights users on 6/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/174:57 pm
STL
- CVG
1 stop17h 51m
Frontier
Sun 7/1912:18 pm
CVG
- STL
1 stop21h 39m
Frontier
Deal found 6/20![Frontier logo]()
$168
This Trip.com deal was found by Cheapflights users on 6/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/232:48 pm
MDW
- TYS
Nonstop1h 30m
Allegiant Air
Sun 7/261:22 pm
TYS
- MDW
Nonstop1h 36m
Allegiant Air
Deal found 6/20![Allegiant Air logo]()
$142
One-way flights from Illinois to KentuckySearch for one-way flight options from Illinois to Kentucky. Find affordable one-way fares based on user searches. Data last updated June 22, 2026.
Search for one-way flight options from Illinois to Kentucky. Find affordable one-way fares based on user searches. Data last updated June 22, 2026.
This Kiwi.com deal was found by Cheapflights users on 6/20. Clicking the “Pick Dates” 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 8/132:49 pm
MDW
- TYS
Nonstop1h 30m
Allegiant Air
Deal found 6/20![Allegiant Air logo]()
$49
This Southwest deal was found by Cheapflights users on 6/18. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/156:15 pm
STL
- BNA
Nonstop1h 05m
Southwest
Deal found 6/18![Southwest logo]()
$55
This Kiwi.com deal was found by Cheapflights users on 6/17. 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.
Thu 7/232:48 pm
MDW
- TYS
Nonstop1h 30m
Allegiant Air
Deal found 6/17![Allegiant Air logo]()
$60
This United Airlines deal was found by Cheapflights users on 6/19. Clicking the “Pick Dates” 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 12/167:33 am
STL
- BNA
Nonstop4h 33m
United Airlines
Deal found 6/19![United Airlines logo]()
$64
This Kiwi.com deal was found by Cheapflights users on 6/17. 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.
Thu 7/302:48 pm
MDW
- TYS
Nonstop1h 30m
Allegiant Air
Deal found 6/17![Allegiant Air logo]()
$64
This Cheapflightsfares deal was found by Cheapflights users on 6/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/122:48 pm
MDW
- TYS
Nonstop1h 30m
Allegiant Air
Deal found 6/19![Allegiant Air logo]()
$67
This Southwest deal was found by Cheapflights users on 6/18. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/1510:45 am
STL
- BNA
2 stops5h 15m
Southwest
Deal found 6/18![Southwest logo]()
$70
This Super.com deal was found by Cheapflights users on 6/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/92:48 pm
MDW
- TYS
Nonstop1h 30m
Allegiant Air
Deal found 6/21![Allegiant Air logo]()
$70
This Delta deal was found by Cheapflights users on 6/18. 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.
Tue 8/186:00 am
STL
- BNA
1 stop5h 23m
Delta
Deal found 6/18![Delta logo]()
$74
This Southwest deal was found by Cheapflights users on 6/18. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/226:15 pm
MDW
- CVG
Nonstop1h 15m
Southwest
Deal found 6/18![Southwest logo]()
$79
This American Airlines deal was found by Cheapflights users on 6/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/227:06 am
ORD
- CVG
Nonstop1h 29m
American Airlines
Deal found 6/19![American Airlines logo]()
$79
This Delta deal was found by Cheapflights users on 6/18. 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.
Tue 7/146:58 pm
STL
- BNA
1 stop4h 17m
Delta
Deal found 6/18![Delta logo]()
$79
Find flight deals from Illinois to Kentucky
Keep the following information in mind while searching for Illinois to Kentucky flight deals. Data was last updated June 22, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $109 (Southwest) |
One-way from | $49 (Kiwi.com) |
Popular in | May |
Cheapest in | August |
Average price | $489 |
Good round-trip deal | $163 or less |
Good one-way deal | $119 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Illinois to Kentucky 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 June 22, 2026.
Use the filters below to find and compare flights from Illinois to Kentucky that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
St. LouisNashville
STL - BNA
STLBNA
Lambert-St Louis
Wed 7/8
10:15 am-11:25 am
Nonstop1h 10m
Nashville Intl
Tue 7/14
9:45 pm-11:05 pm
Nonstop1h 20m
$109
St. LouisNashville
STL - BNA
STLBNA
Lambert-St Louis
Tue 9/1
12:50 pm-4:05 pm
1 stop3h 15m
Nashville Intl
Wed 9/2
12:45 pm-1:55 pm
Nonstop1h 10m
$119
Quickest round-trip
St. LouisNashville
STL - BNA
STLBNA
Lambert-St Louis
Sat 8/8
7:50 am-9:00 am
Nonstop1h 10m
Nashville Intl
Mon 8/10
9:00 am-10:10 am
Nonstop1h 10m
$156
St. LouisCincinnati
STL - CVG
STLCVG
Lambert-St Louis
Thu 7/16
6:34 pm-11:48 am
1 stop16h 14m
Cincinnati Cinci./N. Kentucky
Thu 7/23
12:18 pm-5:37 pm
1 stop6h 19m
$163
St. LouisCincinnati
STL - CVG
STLCVG
Lambert-St Louis
Tue 7/21
6:34 pm-11:48 am
1 stop16h 14m
Cincinnati Cinci./N. Kentucky
Sun 7/26
12:18 pm-8:57 am
1 stop21h 39m
$166
St. LouisCincinnati
STL - CVG
STLCVG
Lambert-St Louis
Tue 7/21
6:34 pm-11:48 am
1 stop16h 14m
Cincinnati Cinci./N. Kentucky
Tue 7/28
12:18 pm-8:57 am
1 stop21h 39m
$166
St. LouisCincinnati
STL - CVG
STLCVG
Lambert-St Louis
Tue 7/14
6:34 pm-11:48 am
1 stop16h 14m
Cincinnati Cinci./N. Kentucky
Thu 7/16
12:18 pm-5:37 pm
1 stop6h 19m
$166
ChicagoCincinnati
ORD - CVG
ORDCVG
Chicago O'Hare Intl
Sat 8/15
5:18 pm-10:40 pm
1 stop4h 22m
Cincinnati Cinci./N. Kentucky
Tue 8/18
10:53 am-4:17 pm
1 stop6h 24m
$177
ChicagoCincinnati
ORD - CVG
ORDCVG
Chicago O'Hare Intl
Wed 7/8
7:05 am-1:35 pm
1 stop5h 30m
Cincinnati Cinci./N. Kentucky
Tue 7/14
2:15 pm-6:29 pm
1 stop5h 14m
$177
ChicagoCincinnati
MDW - CVG
MDWCVG
Chicago Midway
Tue 7/21
5:30 pm-11:10 pm
1 stop4h 40m
Cincinnati Cinci./N. Kentucky
Tue 7/28
7:00 am-1:35 pm
2 stops7h 35m
$182
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Illinois to Kentucky
Have a flexible travel schedule? Discover the best time to fly to Kentucky from Illinois with our price prediction graph.
STL-BNA
STL-CVG
ORD-CVG
ORD-BNA
ORD-LEX
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 Illinois to Kentucky
USIL-USKY
STL-BNA
STL-CVG
ORD-CVG
ORD-BNA
What is the cheapest month to book a flight from Illinois to Kentucky?
Currently, July is the cheapest month in which you can book a flight from Illinois to Kentucky (average of $69). Flying from Illinois to Kentucky in May is currently the most expensive (average of $206). 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 IL to KY?
Find hourly flight availability from Illinois to Kentucky. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 22, 2026.
It’s optimal to fly from Illinois to Kentucky in the morning. By choosing this option you can save up to 30% on the cost of your flight, compared to a flight in the evening.
Weekly flight availability from Illinois to Kentucky
Explore weekly flight availability from Illinois to Kentucky. 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 June 22, 2026.
The most flights from USIL to USKY are scheduled on a Monday (35 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (21 on average).
How much does it cost to fly round-trip from Illinois to Kentucky?
How far ahead should I book a flight from Illinois to Kentucky?
The best time to book flights from Illinois to Kentucky is 69 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 Illinois to Kentucky?
Use this chart to determine the cheapest time to fly round-trip from Illinois to Kentucky. Price data was last updated on June 20, 2026.
Travelers seeking maximum savings on their Illinois to Kentucky 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 Kentucky
Get insights into the airlines that provide service to Kentucky. 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 Kentucky. Reviews last updated June 22, 2026.
Peruse reviews from past customers who have flown with Southwest,Contour, andUnited Airlines from Illinois to Kentucky to help guide your decision. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Overall
7.9
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Crew
8.6
Food
7.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Overall
7.9
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Crew
8.6
Food
7.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Overall
7.9
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Crew
8.6
Food
7.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Overall
7.9
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Crew
8.6
Food
7.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Overall
7.9
Boarding
8.1
Comfort
8.0
Entertainment
7.5
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 Illinois to Kentucky. 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 Illinois to Kentucky
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Kentucky by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Illinois to Kentucky by cabin class
Find flights from Illinois to Kentucky, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Illinois and Kentucky flights
Browse other Illinois and Kentucky flight options. Last updated on June 22, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Find a return flight route from Kentucky
Find the right flight back to Illinois after your stay in Kentucky
Illinois to Kentucky flights
Consider these flights traveling from Illinois to Kentucky.
Top 4 airlines flying from Illinois to Kentucky
Discover the top 4 airlines that operate flights from Illinois to Kentucky. 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 June 22, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$104 | Average$148 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$124 | Average$295 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$136 | Average$312 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$137 | Average$394 | FlexibilityNo cancel fee | On-time69% |