$123+ Cheap flights from Ontario (ONT) 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 8/18. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — SDF
Aug 10 — Aug 171
Round-trip
1 adult, Economy
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Find cheap flights from Ontario to Kentucky with Cheapflights
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Cheapest flights from Ontario to KentuckyExplore the most affordable flight options available from Ontario to Kentucky. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 11, 2026.
Explore the most affordable flight options available from Ontario to Kentucky. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 11, 2026.
This American Airlines deal was found by Cheapflights users on 7/11. Clicking the “Pick Dates” 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 8/1912:33 pm
ONT
- TYS
1 stop7h 45m
American Airlines
Wed 8/266:03 am
TYS
- ONT
1 stop6h 31m
American Airlines
Deal found 7/11![American Airlines logo]()
$233
This United Airlines deal was found by Cheapflights users on 7/9. Clicking the “Pick Dates” 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 8/195:00 am
ONT
- TYS
1 stop7h 54m
United Airlines
Wed 8/2610:40 am
TYS
- ONT
2 stops12h 21m
United Airlines
Deal found 7/9![United Airlines logo]()
$238
This Kiwi.com deal was found by Cheapflights users on 7/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/51:38 pm
ONT
- CVG
1 stop23h 18m
Multiple Airlines
Mon 8/109:27 pm
CVG
- ONT
1 stop13h 36m
Multiple Airlines
Deal found 7/8![Multiple Airlines logo]()
$251
This United Airlines deal was found by Cheapflights users on 7/9. Clicking the “Pick Dates” 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 8/195:00 am
ONT
- TYS
1 stop7h 54m
United Airlines
Mon 8/246:02 pm
TYS
- ONT
1 stop7h 33m
United Airlines
Deal found 7/9![United Airlines logo]()
$260
This Southwest deal was found by Cheapflights users on 7/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/58:20 am
ONT
- SDF
1 stop6h 30m
Southwest
Sat 12/128:40 am
SDF
- ONT
1 stop7h 10m
Southwest
Deal found 7/7![Southwest logo]()
$261
This American Airlines deal was found by Cheapflights users on 7/9. Clicking the “Pick Dates” 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 8/2812:33 pm
ONT
- TYS
1 stop7h 45m
American Airlines
Tue 9/17:19 am
TYS
- ONT
1 stop9h 12m
American Airlines
Deal found 7/9![American Airlines logo]()
$263
This Kiwi.com deal was found by Cheapflights users on 7/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/284:27 pm
ONT
- TYS
1 stop25h 12m
Multiple Airlines
Mon 11/29:42 pm
TYS
- ONT
1 stop21h 28m
Multiple Airlines
Deal found 7/8![Multiple Airlines logo]()
$268
This Kiwi.com deal was found by Cheapflights users on 7/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/253:40 pm
ONT
- CVG
1 stop25h 35m
Frontier
Tue 9/19:20 pm
CVG
- ONT
1 stop21h 34m
Frontier
Deal found 7/8![Frontier logo]()
$269
This Southwest deal was found by Cheapflights users on 7/10. Clicking the “Pick Dates” 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 11/28:05 am
ONT
- TYS
1 stop7h 40m
Southwest
Tue 11/177:00 am
TYS
- ONT
2 stops10h 25m
Southwest
Deal found 7/10![Southwest logo]()
$269
This Southwest deal was found by Cheapflights users on 7/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/115:45 am
ONT
- SDF
2 stops9h 10m
Southwest
Tue 8/1812:10 pm
SDF
- ONT
2 stops8h 25m
Southwest
Deal found 7/8![Southwest logo]()
$271
This Kiwi.com deal was found by Cheapflights users on 7/10. Clicking the “Pick Dates” 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 8/203:40 pm
ONT
- CVG
1 stop25h 35m
Frontier
Tue 8/259:20 pm
CVG
- ONT
1 stop21h 34m
Frontier
Deal found 7/10![Frontier logo]()
$274
This Southwest deal was found by Cheapflights users on 7/10. Clicking the “Pick Dates” 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 8/51:50 pm
ONT
- SDF
1 stop5h 40m
Southwest
Wed 8/128:15 am
SDF
- ONT
1 stop7h 25m
Southwest
Deal found 7/10![Southwest logo]()
$275
Best flights from Ontario to KentuckyDiscover carefully curated flight deals from Ontario to Kentucky that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 11, 2026.
Discover carefully curated flight deals from Ontario to Kentucky that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 11, 2026.
This Southwest deal was found by Cheapflights users on 7/9. Clicking the “Pick Dates” 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 9/18:35 am
ONT
- SDF
2 stops9h 00m
Southwest
Tue 9/158:15 am
SDF
- ONT
1 stop7h 25m
Southwest
Deal found 7/9![Southwest logo]()
$266
This Delta deal was found by Cheapflights users on 7/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/2611:15 pm
ONT
- SDF
1 stop9h 21m
Delta
Mon 11/93:24 pm
SDF
- ONT
1 stop9h 50m
Delta
Deal found 7/8![Delta logo]()
$277
This Alaska Airlines deal was found by Cheapflights users on 7/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/45:26 pm
ONT
- BNA
1 stop10h 14m
Alaska Airlines
Wed 8/54:43 pm
BNA
- ONT
1 stop9h 09m
Alaska Airlines
Deal found 7/10![Alaska Airlines logo]()
$344
This Kiwi.com deal was found by Cheapflights users on 7/10. Clicking the “Pick Dates” 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 10/16:00 am
ONT
- CVG
1 stop11h 29m
Frontier
Sun 10/412:48 pm
CVG
- ONT
2 stops28h 49m
Frontier
Deal found 7/10![Frontier logo]()
$345
This United Airlines deal was found by Cheapflights users on 7/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/255:00 am
ONT
- SDF
1 stop6h 29m
United Airlines
Tue 9/18:00 am
SDF
- ONT
2 stops13h 11m
United Airlines
Deal found 7/9![United Airlines logo]()
$366
This American Airlines deal was found by Cheapflights users on 7/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/510:34 pm
ONT
- EVV
1 stop10h 05m
American Airlines
Sat 12/125:44 am
EVV
- ONT
2 stops12h 17m
American Airlines
Deal found 7/7![American Airlines logo]()
$476
This Southwest deal was found by Cheapflights users on 7/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/55:35 am
ONT
- SDF
1 stop6h 40m
Southwest
Sat 12/128:40 am
SDF
- ONT
2 stops9h 40m
Southwest
Deal found 7/7![Southwest logo]()
$266
This Southwest deal was found by Cheapflights users on 7/10. Clicking the “Pick Dates” 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 11/28:05 am
ONT
- TYS
1 stop7h 40m
Southwest
Tue 11/177:00 am
TYS
- ONT
2 stops10h 25m
Southwest
Deal found 7/10![Southwest logo]()
$269
This Delta deal was found by Cheapflights users on 7/11. Clicking the “Pick Dates” 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 8/1010:00 pm
ONT
- TYS
1 stop8h 36m
Delta
Thu 8/136:12 pm
TYS
- ONT
1 stop6h 40m
Delta
Deal found 7/11![Delta logo]()
$318
This United Airlines deal was found by Cheapflights users on 7/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/119:15 am
ONT
- LEX
2 stops11h 40m
United Airlines
Tue 8/189:15 am
LEX
- ONT
1 stop6h 35m
United Airlines
Deal found 7/10![United Airlines logo]()
$374
This Delta deal was found by Cheapflights users on 7/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2710:00 pm
ONT
- SDF
1 stop7h 46m
Delta
Mon 8/317:05 am
SDF
- ONT
1 stop6h 37m
Delta
Deal found 7/10![Delta logo]()
$350
This Southwest deal was found by Cheapflights users on 7/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/158:45 am
ONT
- BNA
Nonstop3h 55m
Southwest
Mon 8/317:35 am
BNA
- ONT
1 stop5h 50m
Southwest
Deal found 7/7![Southwest logo]()
$338
This United Airlines deal was found by Cheapflights users on 7/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/85:45 am
ONT
- LEX
2 stops15h 14m
United Airlines
Fri 8/146:15 pm
LEX
- ONT
1 stop7h 20m
United Airlines
Deal found 7/6![United Airlines logo]()
$376
This Delta deal was found by Cheapflights users on 7/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/1512:00 pm
ONT
- LEX
1 stop7h 46m
Delta
Sat 8/226:00 am
LEX
- ONT
1 stop7h 42m
Delta
Deal found 7/6![Delta logo]()
$366
This Southwest deal was found by Cheapflights users on 7/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/77:30 am
ONT
- BNA
2 stops8h 15m
Southwest
Sun 10/115:05 am
BNA
- ONT
1 stop5h 55m
Southwest
Deal found 7/7![Southwest logo]()
$339
This United Airlines deal was found by Cheapflights users on 7/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/257:00 am
ONT
- TYS
1 stop6h 58m
United Airlines
Wed 8/264:50 pm
TYS
- ONT
1 stop7h 03m
United Airlines
Deal found 7/7![United Airlines logo]()
$377
This Delta deal was found by Cheapflights users on 7/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/99:45 am
ONT
- BNA
1 stop6h 23m
Delta
Sun 10/187:25 am
BNA
- ONT
1 stop6h 57m
Delta
Deal found 7/8![Delta logo]()
$367
This Southwest deal was found by Cheapflights users on 7/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/248:10 am
ONT
- SDF
1 stop6h 10m
Southwest
Fri 8/289:00 am
SDF
- ONT
2 stops8h 00m
Southwest
Deal found 7/7![Southwest logo]()
$340
This American Airlines deal was found by Cheapflights users on 7/9. Clicking the “Pick Dates” 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 9/167:20 am
ONT
- EVV
1 stop8h 06m
American Airlines
Fri 9/256:00 am
EVV
- ONT
1 stop7h 47m
American Airlines
Deal found 7/9![American Airlines logo]()
$499
This Delta deal was found by Cheapflights users on 7/11. Clicking the “Pick Dates” 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 9/2510:00 pm
ONT
- BNA
1 stop8h 25m
Delta
Sun 9/277:15 am
BNA
- ONT
1 stop6h 59m
Delta
Deal found 7/11![Delta logo]()
$367
This United Airlines deal was found by Cheapflights users on 7/10. Clicking the “Pick Dates” 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 8/265:00 am
ONT
- CVG
1 stop6h 23m
United Airlines
Sat 8/297:00 am
CVG
- ONT
2 stops11h 41m
United Airlines
Deal found 7/10![United Airlines logo]()
$408
This American Airlines deal was found by Cheapflights users on 7/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/52:56 pm
ONT
- EVV
1 stop6h 02m
American Airlines
Sun 12/133:50 pm
EVV
- ONT
1 stop8h 29m
American Airlines
Deal found 7/6![American Airlines logo]()
$499
This Southwest deal was found by Cheapflights users on 7/10. Clicking the “Pick Dates” 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.
Sun 11/18:05 am
ONT
- TYS
1 stop7h 40m
Southwest
Wed 11/187:00 am
TYS
- ONT
2 stops8h 15m
Southwest
Deal found 7/10![Southwest logo]()
$350
This United Airlines deal was found by Cheapflights users on 7/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/257:00 am
ONT
- CVG
1 stop6h 55m
United Airlines
Wed 8/2612:29 pm
CVG
- ONT
2 stops10h 32m
United Airlines
Deal found 7/7![United Airlines logo]()
$408
This American Airlines deal was found by Cheapflights users on 7/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/96:30 am
ONT
- EVV
1 stop6h 50m
American Airlines
Sun 12/133:50 pm
EVV
- ONT
1 stop8h 29m
American Airlines
Deal found 7/7![American Airlines logo]()
$499
This Delta deal was found by Cheapflights users on 7/10. Clicking the “Pick Dates” 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 8/211:06 pm
ONT
- CVG
1 stop6h 35m
Delta
Sun 8/237:29 pm
CVG
- ONT
1 stop7h 05m
Delta
Deal found 7/10![Delta logo]()
$395
This United Airlines deal was found by Cheapflights users on 7/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/259:01 am
ONT
- BNA
2 stops10h 36m
United Airlines
Sat 8/296:00 am
BNA
- ONT
2 stops11h 41m
United Airlines
Deal found 7/10![United Airlines logo]()
$408
This Southwest deal was found by Cheapflights users on 7/9. Clicking the “Pick Dates” 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 8/1010:00 am
ONT
- BNA
Nonstop3h 50m
Southwest
Fri 8/141:25 pm
BNA
- ONT
Nonstop4h 05m
Southwest
Deal found 7/9![Southwest logo]()
$377
This United Airlines deal was found by Cheapflights users on 7/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/197:00 am
ONT
- SDF
1 stop9h 07m
United Airlines
Tue 9/223:25 pm
SDF
- ONT
1 stop8h 28m
United Airlines
Deal found 7/8![United Airlines logo]()
$412
This Southwest deal was found by Cheapflights users on 7/9. Clicking the “Pick Dates” 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 9/2511:55 pm
ONT
- BNA
2 stops9h 35m
Southwest
Sun 9/275:30 am
BNA
- ONT
1 stop6h 30m
Southwest
Deal found 7/9![Southwest logo]()
$384
Last-minute flights from Ontario to KentuckyDiscover last-minute flight deals from Ontario to Kentucky. Data last updated July 11, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Kentucky. Data last updated July 11, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 7/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/45:00 am
ONT
- SDF
1 stop6h 28m
United Airlines
Tue 8/113:25 pm
SDF
- ONT
1 stop8h 28m
United Airlines
Deal found 7/8![United Airlines logo]()
$261
This Kiwi.com deal was found by Cheapflights users on 7/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/51:38 pm
ONT
- CVG
1 stop23h 18m
Multiple Airlines
Mon 8/109:27 pm
CVG
- ONT
1 stop13h 36m
Multiple Airlines
Deal found 7/8![Multiple Airlines logo]()
$251
This Southwest deal was found by Cheapflights users on 7/10. Clicking the “Pick Dates” 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 8/51:50 pm
ONT
- SDF
1 stop5h 40m
Southwest
Wed 8/128:15 am
SDF
- ONT
1 stop7h 25m
Southwest
Deal found 7/10![Southwest logo]()
$275
This Delta deal was found by Cheapflights users on 7/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/1010:00 pm
ONT
- TYS
1 stop8h 36m
Delta
Thu 8/136:12 pm
TYS
- ONT
1 stop6h 40m
Delta
Deal found 7/8![Delta logo]()
$277
This Southwest deal was found by Cheapflights users on 7/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/102:40 pm
ONT
- SDF
1 stop5h 25m
Southwest
Tue 8/1111:50 am
SDF
- ONT
1 stop8h 45m
Southwest
Deal found 7/8![Southwest logo]()
$278
This Southwest deal was found by Cheapflights users on 7/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/112:10 pm
ONT
- SDF
1 stop5h 50m
Southwest
Tue 8/184:00 pm
SDF
- ONT
2 stops7h 55m
Southwest
Deal found 7/8![Southwest logo]()
$266
This American Airlines deal was found by Cheapflights users on 7/11. Clicking the “Pick Dates” 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 8/1912:33 pm
ONT
- TYS
1 stop7h 45m
American Airlines
Wed 8/266:03 am
TYS
- ONT
1 stop6h 31m
American Airlines
Deal found 7/11![American Airlines logo]()
$233
This United Airlines deal was found by Cheapflights users on 7/9. Clicking the “Pick Dates” 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 8/195:00 am
ONT
- TYS
1 stop7h 54m
United Airlines
Wed 8/2610:40 am
TYS
- ONT
2 stops12h 21m
United Airlines
Deal found 7/9![United Airlines logo]()
$238
This United Airlines deal was found by Cheapflights users on 7/9. Clicking the “Pick Dates” 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 8/195:00 am
ONT
- TYS
1 stop7h 54m
United Airlines
Mon 8/246:02 pm
TYS
- ONT
1 stop7h 33m
United Airlines
Deal found 7/9![United Airlines logo]()
$260
This Kiwi.com deal was found by Cheapflights users on 7/10. Clicking the “Pick Dates” 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 8/203:40 pm
ONT
- CVG
1 stop25h 35m
Frontier
Tue 8/259:20 pm
CVG
- ONT
1 stop21h 34m
Frontier
Deal found 7/10![Frontier logo]()
$274
This Kiwi.com deal was found by Cheapflights users on 7/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/253:40 pm
ONT
- CVG
1 stop25h 35m
Frontier
Tue 9/19:20 pm
CVG
- ONT
1 stop21h 34m
Frontier
Deal found 7/8![Frontier logo]()
$269
This American Airlines deal was found by Cheapflights users on 7/9. Clicking the “Pick Dates” 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 8/2812:33 pm
ONT
- TYS
1 stop7h 45m
American Airlines
Tue 9/17:19 am
TYS
- ONT
1 stop9h 12m
American Airlines
Deal found 7/9![American Airlines logo]()
$263
One-way flights from Ontario to KentuckySearch for one-way flight options from Ontario to Kentucky. Find affordable one-way fares based on user searches. Data last updated July 11, 2026.
Search for one-way flight options from Ontario to Kentucky. Find affordable one-way fares based on user searches. Data last updated July 11, 2026.
This Southwest deal was found by Cheapflights users on 7/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/187:25 am
ONT
- BNA
Nonstop3h 50m
Southwest
Deal found 7/7![Southwest logo]()
$123
This Delta deal was found by Cheapflights users on 7/11. Clicking the “Pick Dates” 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 8/256:00 am
ONT
- BNA
1 stop5h 57m
Delta
Deal found 7/11![Delta logo]()
$126
This Delta deal was found by Cheapflights users on 7/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/61:06 pm
ONT
- BNA
1 stop7h 44m
Delta
Deal found 7/8![Delta logo]()
$127
This Super.com deal was found by Cheapflights users on 7/9. Clicking the “Pick Dates” 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.
Tue 8/186:00 am
ONT
- BNA
1 stop28h 10m
Frontier
Deal found 7/9![Frontier logo]()
$128
This Super.com deal was found by Cheapflights users on 7/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/46:15 am
ONT
- BNA
1 stop10h 32m
Frontier
Deal found 7/8![Frontier logo]()
$129
This Frontier deal was found by Cheapflights users on 7/10. Clicking the “Pick Dates” 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.
Tue 10/66:00 am
ONT
- BNA
1 stop10h 47m
Frontier
Deal found 7/10![Frontier logo]()
$130
This United Airlines deal was found by Cheapflights users on 7/9. Clicking the “Pick Dates” 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 8/265:00 am
ONT
- BNA
2 stops11h 45m
United Airlines
Deal found 7/9![United Airlines logo]()
$131
This Kiwi.com deal was found by Cheapflights users on 7/9. Clicking the “Pick Dates” 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 10/78:07 am
ONT
- CVG
1 stop12h 52m
Frontier
Deal found 7/9![Frontier logo]()
$133
This Trip.com deal was found by Cheapflights users on 7/9. Clicking the “Pick Dates” 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.
Wed 10/286:15 am
ONT
- BNA
1 stop26h 22m
Frontier
Deal found 7/9![Frontier logo]()
$134
This Kiwi.com deal was found by Cheapflights users on 7/10. Clicking the “Pick Dates” 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 8/121:38 pm
ONT
- CVG
1 stop27h 44m
Frontier
Deal found 7/10![Frontier logo]()
$135
This CheapOair deal was found by Cheapflights users on 7/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/239:49 pm
ONT
- BNA
1 stop14h 08m
Frontier
Deal found 7/8![Frontier logo]()
$135
This Super.com deal was found by Cheapflights users on 7/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/78:17 am
ONT
- BNA
1 stop8h 56m
Frontier
Deal found 7/8![Frontier logo]()
$136
Find flight deals from Ontario to Kentucky
Keep the following information in mind while searching for Ontario to Kentucky flight deals. Data was last updated July 11, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $233 (American Airlines) |
One-way from | $123 (Southwest) |
Popular in | February |
Cheapest in | July |
Average price | $267 |
Cheapflights Fare Finder
Customize your flight search to find flights from Ontario 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 July 11, 2026.
Use the filters below to find and compare flights from Ontario to Kentucky that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
OntarioLouisville
ONT - SDF
ONTSDF
Ontario
Tue 9/1
8:35 am-8:35 pm
2 stops9h 00m
Louisville Intl
Tue 9/15
8:15 am-12:40 pm
1 stop7h 25m
$266
OntarioLouisville
ONT - SDF
ONTSDF
Ontario
Sat 12/5
5:35 am-3:15 pm
1 stop6h 40m
Louisville Intl
Sat 12/12
8:40 am-3:20 pm
2 stops9h 40m
$266
OntarioKnoxville
ONT - TYS
ONTTYS
Ontario
Mon 11/2
8:05 am-6:45 pm
1 stop7h 40m
Knoxville McGhee Tyson
Tue 11/17
7:00 am-2:25 pm
2 stops10h 25m
$269
OntarioLouisville
ONT - SDF
ONTSDF
Ontario
Mon 10/26
11:15 pm-11:36 am
1 stop9h 21m
Louisville Intl
Mon 11/9
3:24 pm-10:14 pm
1 stop9h 50m
$277
OntarioKnoxville
ONT - TYS
ONTTYS
Ontario
Mon 8/10
10:00 pm-9:36 am
1 stop8h 36m
Knoxville McGhee Tyson
Thu 8/13
6:12 pm-9:52 pm
1 stop6h 40m
$318
OntarioNashville
ONT - BNA
ONTBNA
Ontario
Sat 8/15
8:45 am-2:40 pm
Nonstop3h 55m
Nashville Intl
Mon 8/31
7:35 am-11:25 am
1 stop5h 50m
$338
OntarioNashville
ONT - BNA
ONTBNA
Ontario
Wed 10/7
7:30 am-5:45 pm
2 stops8h 15m
Nashville Intl
Sun 10/11
5:05 am-9:00 am
1 stop5h 55m
$339
OntarioLouisville
ONT - SDF
ONTSDF
Ontario
Mon 8/24
8:10 am-5:20 pm
1 stop6h 10m
Louisville Intl
Fri 8/28
9:00 am-2:00 pm
2 stops8h 00m
$340
OntarioNashville
ONT - BNA
ONTBNA
Ontario
Tue 8/4
5:26 pm-5:40 am
1 stop10h 14m
Nashville Intl
Wed 8/5
4:43 pm-11:52 pm
1 stop9h 09m
$344
OntarioCincinnati
ONT - CVG
ONTCVG
Ontario
Thu 10/1
6:00 am-8:29 pm
1 stop11h 29m
Cincinnati Cinci./N. Kentucky
Sun 10/4
12:48 pm-2:37 pm
2 stops28h 49m
$345
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Ontario to Kentucky
Have a flexible travel schedule? Discover the best time to fly to Kentucky from Ontario with our price prediction graph.
ONT-TYS
ONT-CVG
ONT-SDF
ONT-BNA
ONT-EVV
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 Ontario to Kentucky
ONT-USKY
ONT-TYS
ONT-CVG
ONT-SDF
ONT-BNA
What is the cheapest month to book a flight from Ontario to Kentucky?
Currently, July is the cheapest month in which you can book a flight from Ontario to Kentucky (average of $122). Flying from Ontario to Kentucky in June is currently the most expensive (average of $382). 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.
How much does it cost to fly round-trip from Ontario to Kentucky?
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 July 11, 2026.
Read through reviews of airlines operating flights from Ontario to Kentucky, such as Southwest,Delta, andUnited Airlines. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Boarding
8.1
Overall
7.9
Entertainment
7.5
Comfort
8.0
Crew
8.6
Food
7.0
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Boarding
8.1
Overall
7.9
Entertainment
7.5
Comfort
8.0
Crew
8.6
Food
7.0
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Boarding
8.1
Overall
7.9
Entertainment
7.5
Comfort
8.0
Crew
8.6
Food
7.0
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Boarding
8.1
Overall
7.9
Entertainment
7.5
Comfort
8.0
Crew
8.6
Food
7.0
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Boarding
8.1
Overall
7.9
Entertainment
7.5
Comfort
8.0
Crew
8.6
Food
7.0
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Related info for your journey
Find useful and relevant information for your journey from Ontario 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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Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
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Alternative routes for Ontario 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 Ontario to Kentucky by cabin class
Find flights from Ontario to Kentucky, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Ontario and Kentucky flights
Browse other Ontario and Kentucky flight options. Last updated on July 11, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Ontario to Kentucky flights
Consider these flights traveling from Ontario to Kentucky.
Top 4 airlines flying from Ontario to Kentucky
Discover the top 4 airlines that operate flights from Ontario 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 July 11, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$228 | Average$429 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$288 | Average$517 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$326 | Average$485 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$341 | Average$486 | FlexibilityNo cancel fee | On-time63% |