$104+ 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 3/31. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — SDF
Apr 17 — Apr 241
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 March 18, 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 March 18, 2026.
This Expedia deal was found by Cheapflights users on 3/17. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/176:15 am
ONT
- CVG
1 stop10h 08m
Frontier
Sun 4/198:38 pm
CVG
- ONT
1 stop26h 26m
Frontier
Deal found 3/17![Frontier logo]()
$210
This Booking.com deal was found by Cheapflights users on 3/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/235:33 pm
ONT
- CVG
1 stop22h 39m
Frontier
Thu 4/308:17 pm
CVG
- ONT
1 stop6h 38m
Frontier
Deal found 3/16![Frontier logo]()
$217
This Mytrip deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/2312:59 am
ONT
- CVG
1 stop15h 13m
Frontier
Mon 4/278:38 pm
CVG
- ONT
1 stop17h 06m
Frontier
Deal found 3/13![Frontier logo]()
$219
This CheapOair deal was found by Cheapflights users on 3/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/235:33 pm
ONT
- CVG
1 stop22h 39m
Frontier
Mon 4/278:38 pm
CVG
- ONT
1 stop17h 06m
Frontier
Deal found 3/15![Frontier logo]()
$221
This CheapOair deal was found by Cheapflights users on 3/12. Clicking the “Pick Dates” 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.
Fri 5/86:00 am
ONT
- TYS
1 stop10h 33m
Frontier
Fri 5/158:32 pm
TYS
- ONT
1 stop16h 33m
Frontier
Deal found 3/12![Frontier logo]()
$221
This Gotogate deal was found by Cheapflights users on 3/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/235:33 pm
ONT
- CVG
1 stop22h 39m
Frontier
Sun 4/268:38 pm
CVG
- ONT
1 stop14h 46m
Frontier
Deal found 3/15![Frontier logo]()
$222
This Booking.com deal was found by Cheapflights users on 3/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/2312:59 am
ONT
- CVG
1 stop15h 13m
Frontier
Sun 4/268:38 pm
CVG
- ONT
1 stop14h 46m
Frontier
Deal found 3/14![Frontier logo]()
$223
This Frontier deal was found by Cheapflights users on 3/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/167:49 pm
ONT
- CVG
1 stop7h 04m
Frontier
Mon 4/208:17 pm
CVG
- ONT
1 stop6h 38m
Frontier
Deal found 3/16![Frontier logo]()
$230
This Booking.com deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/1611:47 am
ONT
- CVG
1 stop15h 06m
Frontier
Sun 4/198:38 pm
CVG
- ONT
1 stop16h 36m
Frontier
Deal found 3/13![Frontier logo]()
$232
This Mytrip deal was found by Cheapflights users on 3/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/16:20 am
ONT
- CVG
1 stop29h 02m
Frontier
Tue 4/77:20 am
CVG
- ONT
1 stop19h 36m
Frontier
Deal found 3/15![Frontier logo]()
$240
This Kiwi.com deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/18:20 pm
ONT
- CVG
2 stops19h 16m
Frontier
Mon 5/49:29 pm
CVG
- ONT
1 stop15h 36m
Frontier
Deal found 3/13![Frontier logo]()
$246
This Frontier deal was found by Cheapflights users on 3/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/56:00 am
ONT
- BNA
1 stop10h 22m
Frontier
Tue 5/127:17 pm
BNA
- ONT
1 stop6h 32m
Frontier
Deal found 3/15![Frontier logo]()
$250
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 March 18, 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 March 18, 2026.
This Southwest deal was found by Cheapflights users on 3/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/711:55 pm
ONT
- SDF
1 stop7h 00m
Southwest
Sat 5/91:45 pm
SDF
- ONT
2 stops9h 30m
Southwest
Deal found 3/16![Southwest logo]()
$338
This Delta deal was found by Cheapflights users on 3/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/119:50 am
ONT
- SDF
2 stops11h 35m
Delta
Sat 5/166:05 am
SDF
- ONT
2 stops9h 14m
Delta
Deal found 3/15![Delta logo]()
$364
This United Airlines deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/255:10 am
ONT
- TYS
2 stops11h 46m
United Airlines
Tue 5/55:55 pm
TYS
- ONT
1 stop7h 40m
United Airlines
Deal found 3/13![United Airlines logo]()
$364
This American Airlines deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/3110:36 pm
ONT
- TRI
1 stop9h 01m
American Airlines
Tue 4/75:08 pm
TRI
- ONT
1 stop8h 28m
American Airlines
Deal found 3/13![American Airlines logo]()
$416
This Alaska Airlines deal was found by Cheapflights users on 3/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/136:00 am
ONT
- BNA
1 stop21h 40m
Alaska Airlines
Fri 4/246:05 pm
BNA
- ONT
1 stop30h 27m
Alaska Airlines
Deal found 3/14![Alaska Airlines logo]()
$495
This Southwest deal was found by Cheapflights users on 3/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/810:10 am
ONT
- BNA
Nonstop3h 45m
Southwest
Mon 5/115:35 am
BNA
- ONT
1 stop7h 20m
Southwest
Deal found 3/14![Southwest logo]()
$367
This Delta deal was found by Cheapflights users on 3/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/2912:07 pm
ONT
- LEX
1 stop6h 58m
Delta
Fri 7/315:55 pm
LEX
- ONT
1 stop7h 14m
Delta
Deal found 3/15![Delta logo]()
$369
This United Airlines deal was found by Cheapflights users on 3/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/56:59 pm
ONT
- BNA
2 stops11h 54m
United Airlines
Sat 5/96:00 am
BNA
- ONT
2 stops13h 52m
United Airlines
Deal found 3/14![United Airlines logo]()
$397
This Southwest deal was found by Cheapflights users on 3/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/19:55 pm
ONT
- BNA
1 stop5h 15m
Southwest
Sun 5/38:15 pm
BNA
- ONT
1 stop5h 50m
Southwest
Deal found 3/15![Southwest logo]()
$377
This Delta deal was found by Cheapflights users on 3/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/1810:15 pm
ONT
- TYS
1 stop8h 07m
Delta
Tue 4/214:38 pm
TYS
- ONT
1 stop7h 22m
Delta
Deal found 3/14![Delta logo]()
$379
This United Airlines deal was found by Cheapflights users on 3/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/26:59 pm
ONT
- BNA
2 stops11h 54m
United Airlines
Tue 5/58:40 am
BNA
- ONT
2 stops13h 56m
United Airlines
Deal found 3/14![United Airlines logo]()
$397
This American Airlines deal was found by Cheapflights users on 3/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/237:00 am
ONT
- TRI
2 stops11h 57m
American Airlines
Wed 5/275:23 pm
TRI
- ONT
1 stop8h 15m
American Airlines
Deal found 3/15![American Airlines logo]()
$438
This Southwest deal was found by Cheapflights users on 3/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/712:40 pm
ONT
- SDF
1 stop8h 35m
Southwest
Fri 5/86:30 am
SDF
- ONT
1 stop7h 50m
Southwest
Deal found 3/16![Southwest logo]()
$395
This Delta deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/2910:00 pm
ONT
- TRI
1 stop8h 31m
Delta
Wed 6/33:50 pm
TRI
- ONT
1 stop8h 58m
Delta
Deal found 3/13![Delta logo]()
$397
This United Airlines deal was found by Cheapflights users on 3/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/95:00 am
ONT
- TYS
1 stop7h 53m
United Airlines
Tue 6/235:57 pm
TYS
- ONT
1 stop7h 49m
United Airlines
Deal found 3/15![United Airlines logo]()
$432
This American Airlines deal was found by Cheapflights users on 3/17. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/612:19 pm
ONT
- LEX
2 stops8h 19m
American Airlines
Mon 5/186:36 pm
LEX
- ONT
1 stop7h 00m
American Airlines
Deal found 3/17![American Airlines logo]()
$484
This Southwest deal was found by Cheapflights users on 3/17. 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.
Sat 4/186:00 am
ONT
- SDF
2 stops9h 10m
Southwest
Sun 4/198:20 pm
SDF
- ONT
1 stop6h 50m
Southwest
Deal found 3/17![Southwest logo]()
$400
This Delta deal was found by Cheapflights users on 3/12. Clicking the “Pick Dates” 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 5/1910:00 pm
ONT
- LEX
1 stop8h 21m
Delta
Fri 5/295:55 am
LEX
- ONT
1 stop8h 02m
Delta
Deal found 3/12![Delta logo]()
$424
This United Airlines deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/141:34 pm
ONT
- SDF
1 stop6h 05m
United Airlines
Sat 4/185:00 am
SDF
- ONT
3 stops15h 47m
United Airlines
Deal found 3/13![United Airlines logo]()
$433
This Southwest deal was found by Cheapflights users on 3/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/112:40 pm
ONT
- SDF
1 stop8h 35m
Southwest
Fri 6/51:10 pm
SDF
- ONT
2 stops10h 00m
Southwest
Deal found 3/16![Southwest logo]()
$400
This American Airlines deal was found by Cheapflights users on 3/17. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/2211:59 pm
ONT
- TRI
2 stops12h 48m
American Airlines
Wed 5/275:23 pm
TRI
- ONT
1 stop9h 36m
American Airlines
Deal found 3/17![American Airlines logo]()
$508
This United Airlines deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/57:00 am
ONT
- SDF
1 stop8h 35m
United Airlines
Wed 5/63:37 pm
SDF
- ONT
1 stop7h 59m
United Airlines
Deal found 3/13![United Airlines logo]()
$443
This Delta deal was found by Cheapflights users on 3/12. Clicking the “Pick Dates” 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 5/1810:00 pm
ONT
- LEX
1 stop8h 21m
Delta
Fri 5/295:55 am
LEX
- ONT
1 stop8h 02m
Delta
Deal found 3/12![Delta logo]()
$449
This United Airlines deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/251:34 pm
ONT
- SDF
1 stop6h 05m
United Airlines
Wed 4/293:36 pm
SDF
- ONT
1 stop8h 00m
United Airlines
Deal found 3/13![United Airlines logo]()
$443
This Delta deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/27:05 am
ONT
- CVG
1 stop6h 37m
Delta
Sat 6/65:44 pm
CVG
- ONT
1 stop7h 04m
Delta
Deal found 3/13![Delta logo]()
$452
This Southwest deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/137:55 am
ONT
- BNA
Nonstop3h 45m
Southwest
Wed 5/276:10 pm
BNA
- ONT
Nonstop4h 25m
Southwest
Deal found 3/13![Southwest logo]()
$454
This American Airlines deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/3011:59 pm
ONT
- TRI
1 stop7h 44m
American Airlines
Sun 4/55:30 am
TRI
- ONT
1 stop7h 36m
American Airlines
Deal found 3/13![American Airlines logo]()
$551
This Delta deal was found by Cheapflights users on 3/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/110:00 pm
ONT
- CVG
1 stop8h 04m
Delta
Sun 6/76:00 am
CVG
- ONT
1 stop8h 20m
Delta
Deal found 3/15![Delta logo]()
$452
This United Airlines deal was found by Cheapflights users on 3/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/141:34 pm
ONT
- CVG
1 stop5h 56m
United Airlines
Tue 4/219:00 am
CVG
- ONT
2 stops12h 02m
United Airlines
Deal found 3/16![United Airlines logo]()
$458
This Southwest deal was found by Cheapflights users on 3/12. Clicking the “Pick Dates” 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 5/189:55 pm
ONT
- BNA
1 stop7h 40m
Southwest
Wed 5/206:10 pm
BNA
- ONT
Nonstop4h 25m
Southwest
Deal found 3/12![Southwest logo]()
$464
Last-minute flights from Ontario to KentuckyDiscover last-minute flight deals from Ontario to Kentucky. Data last updated March 18, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Kentucky. Data last updated March 18, 2026 and is based on user searches.
This Mytrip deal was found by Cheapflights users on 3/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/16:20 am
ONT
- CVG
1 stop29h 02m
Frontier
Tue 4/77:20 am
CVG
- ONT
1 stop19h 36m
Frontier
Deal found 3/15![Frontier logo]()
$240
This Expedia deal was found by Cheapflights users on 3/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/1512:59 am
ONT
- TYS
1 stop11h 34m
Frontier
Thu 4/304:28 pm
TYS
- ONT
1 stop10h 27m
Frontier
Deal found 3/16![Frontier logo]()
$250
This Frontier deal was found by Cheapflights users on 3/17. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/167:49 pm
ONT
- CVG
1 stop7h 04m
Frontier
Mon 4/201:05 pm
CVG
- ONT
1 stop13h 38m
Frontier
Deal found 3/17![Frontier logo]()
$230
This Booking.com deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/1611:47 am
ONT
- CVG
1 stop15h 06m
Frontier
Sun 4/198:38 pm
CVG
- ONT
1 stop16h 36m
Frontier
Deal found 3/13![Frontier logo]()
$232
This Frontier deal was found by Cheapflights users on 3/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/167:49 pm
ONT
- CVG
1 stop7h 04m
Frontier
Fri 5/18:17 pm
CVG
- ONT
1 stop6h 38m
Frontier
Deal found 3/16![Frontier logo]()
$250
This Expedia deal was found by Cheapflights users on 3/17. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/176:15 am
ONT
- CVG
1 stop10h 08m
Frontier
Sun 4/198:38 pm
CVG
- ONT
1 stop26h 26m
Frontier
Deal found 3/17![Frontier logo]()
$210
This Frontier deal was found by Cheapflights users on 3/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/1912:59 am
ONT
- BNA
1 stop12h 56m
Frontier
Thu 4/303:24 pm
BNA
- ONT
1 stop10h 31m
Frontier
Deal found 3/14![Frontier logo]()
$252
This Booking.com deal was found by Cheapflights users on 3/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/235:33 pm
ONT
- CVG
1 stop22h 39m
Frontier
Thu 4/308:17 pm
CVG
- ONT
1 stop6h 38m
Frontier
Deal found 3/16![Frontier logo]()
$217
This Mytrip deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/2312:59 am
ONT
- CVG
1 stop15h 13m
Frontier
Mon 4/278:38 pm
CVG
- ONT
1 stop17h 06m
Frontier
Deal found 3/13![Frontier logo]()
$219
This CheapOair deal was found by Cheapflights users on 3/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/235:33 pm
ONT
- CVG
1 stop22h 39m
Frontier
Mon 4/278:38 pm
CVG
- ONT
1 stop17h 06m
Frontier
Deal found 3/15![Frontier logo]()
$221
This Gotogate deal was found by Cheapflights users on 3/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/235:33 pm
ONT
- CVG
1 stop22h 39m
Frontier
Sun 4/268:38 pm
CVG
- ONT
1 stop14h 46m
Frontier
Deal found 3/15![Frontier logo]()
$222
This Booking.com deal was found by Cheapflights users on 3/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/2312:59 am
ONT
- CVG
1 stop15h 13m
Frontier
Sun 4/268:38 pm
CVG
- ONT
1 stop14h 46m
Frontier
Deal found 3/14![Frontier logo]()
$223
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 March 18, 2026.
Search for one-way flight options from Ontario to Kentucky. Find affordable one-way fares based on user searches. Data last updated March 18, 2026.
This Super.com deal was found by Cheapflights users on 3/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/316:15 am
ONT
- BNA
1 stop6h 01m
Frontier
Deal found 3/16![Frontier logo]()
$104
This Frontier deal was found by Cheapflights users on 3/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/309:15 am
ONT
- CVG
1 stop6h 25m
Frontier
Deal found 3/16![Frontier logo]()
$105
This Frontier deal was found by Cheapflights users on 3/17. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/158:30 am
ONT
- BNA
1 stop7h 29m
Frontier
Deal found 3/17![Frontier logo]()
$105
This Kiwi.com deal was found by Cheapflights users on 3/18. 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 4/1612:59 am
ONT
- CVG
1 stop15h 13m
Frontier
Deal found 3/18![Frontier logo]()
$109
This Super.com deal was found by Cheapflights users on 3/18. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/176:15 am
ONT
- BNA
1 stop10h 26m
Frontier
Deal found 3/18![Frontier logo]()
$110
This Booking.com deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/235:33 pm
ONT
- CVG
1 stop22h 39m
Frontier
Deal found 3/13![Frontier logo]()
$111
This Frontier deal was found by Cheapflights users on 3/17. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/166:00 am
ONT
- BNA
1 stop10h 13m
Frontier
Deal found 3/17![Frontier logo]()
$111
This CheapOair deal was found by Cheapflights users on 3/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/3012:59 am
ONT
- CVG
1 stop15h 13m
Frontier
Deal found 3/15![Frontier logo]()
$117
This Kiwi.com deal was found by Cheapflights users on 3/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/126:00 am
ONT
- BNA
1 stop10h 22m
Frontier
Deal found 3/14![Frontier logo]()
$117
This Trip.com deal was found by Cheapflights users on 3/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/66:00 am
ONT
- BNA
1 stop10h 22m
Frontier
Deal found 3/16![Frontier logo]()
$123
This Super.com deal was found by Cheapflights users on 3/18. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/246:15 am
ONT
- BNA
1 stop6h 01m
Frontier
Deal found 3/18![Frontier logo]()
$125
This Super.com deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/2510:03 pm
ONT
- CVG
1 stop11h 39m
Frontier
Deal found 3/13![Frontier logo]()
$130
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 March 18, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $210 (Expedia) |
One-way from | $104 (Super.com) |
Popular in | March |
Cheapest in | June |
Average price | $522 |
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 March 18, 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
Thu 5/7
11:55 pm-9:55 am
1 stop7h 00m
Louisville Intl
Sat 5/9
1:45 pm-8:15 pm
2 stops9h 30m
$338
OntarioLouisville
ONT - SDF
ONTSDF
Ontario
Mon 5/11
9:50 am-12:25 am
2 stops11h 35m
Louisville Intl
Sat 5/16
6:05 am-12:19 pm
2 stops9h 14m
$364
OntarioKnoxville
ONT - TYS
ONTTYS
Ontario
Sat 4/25
5:10 am-7:56 pm
2 stops11h 46m
Knoxville McGhee Tyson
Tue 5/5
5:55 pm-10:35 pm
1 stop7h 40m
$364
OntarioNashville
ONT - BNA
ONTBNA
Ontario
Fri 5/8
10:10 am-3:55 pm
Nonstop3h 45m
Nashville Intl
Mon 5/11
5:35 am-10:55 am
1 stop7h 20m
$367
OntarioLexington
ONT - LEX
ONTLEX
Ontario
Fri 5/29
12:07 pm-10:05 pm
1 stop6h 58m
Lexington Blue Grass
Fri 7/31
5:55 pm-10:09 pm
1 stop7h 14m
$369
OntarioNashville
ONT - BNA
ONTBNA
Ontario
Fri 5/1
9:55 pm-5:10 am
1 stop5h 15m
Nashville Intl
Sun 5/3
8:15 pm-12:05 am
1 stop5h 50m
$377
OntarioKnoxville
ONT - TYS
ONTTYS
Ontario
Sat 4/18
10:15 pm-9:22 am
1 stop8h 07m
Knoxville McGhee Tyson
Tue 4/21
4:38 pm-9:00 pm
1 stop7h 22m
$379
OntarioLouisville
ONT - SDF
ONTSDF
Ontario
Thu 5/7
12:40 pm-12:15 am
1 stop8h 35m
Louisville Intl
Fri 5/8
6:30 am-11:20 am
1 stop7h 50m
$395
OntarioNashville
ONT - BNA
ONTBNA
Ontario
Tue 5/5
6:59 pm-8:53 am
2 stops11h 54m
Nashville Intl
Sat 5/9
6:00 am-5:52 pm
2 stops13h 52m
$397
OntarioNashville
ONT - BNA
ONTBNA
Ontario
Sat 5/2
6:59 pm-8:53 am
2 stops11h 54m
Nashville Intl
Tue 5/5
8:40 am-8:36 pm
2 stops13h 56m
$397
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-CVG
ONT-TYS
ONT-BNA
ONT-SDF
ONT-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 Ontario to Kentucky
ONT-USKY
ONT-CVG
ONT-TYS
ONT-BNA
ONT-SDF
What is the cheapest month to book a flight from Ontario to Kentucky?
Currently, June is the cheapest month in which you can book a flight from Ontario to Kentucky (average of $67). Flying from Ontario to Kentucky in March is currently the most expensive (average of $304). 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.
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 March 18, 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
Crew
8.6
Food
7.0
Comfort
8.0
Overall
8.0
Entertainment
7.5
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
Boarding
8.1
Crew
8.6
Food
7.0
Comfort
8.0
Overall
8.0
Entertainment
7.5
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
Boarding
8.1
Crew
8.6
Food
7.0
Comfort
8.0
Overall
8.0
Entertainment
7.5
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
Boarding
8.1
Crew
8.6
Food
7.0
Comfort
8.0
Overall
8.0
Entertainment
7.5
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
Boarding
8.1
Crew
8.6
Food
7.0
Comfort
8.0
Overall
8.0
Entertainment
7.5
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
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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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 March 18, 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 March 18, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$238 | Average$450 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$288 | Average$465 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$320 | Average$443 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$342 | Average$446 | FlexibilityNo cancel fee | On-time63% |