$109+ 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 6/2. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — SDF
Jun 12 — Jun 191
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 May 13, 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 May 13, 2026.
This Gotogate deal was found by Cheapflights users on 5/10. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/71:28 pm
ONT
- CVG
1 stop27h 20m
Frontier
Tue 7/149:00 pm
CVG
- ONT
1 stop25h 53m
Frontier
Deal found 5/10![Frontier logo]()
$210
This Booking.com deal was found by Cheapflights users on 5/11. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/141:28 pm
ONT
- CVG
1 stop27h 20m
Frontier
Tue 7/219:00 pm
CVG
- ONT
1 stop25h 53m
Frontier
Deal found 5/11![Frontier logo]()
$222
This Expedia deal was found by Cheapflights users on 5/8. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/141:28 pm
ONT
- CVG
1 stop27h 20m
Frontier
Sat 7/189:00 pm
CVG
- ONT
1 stop25h 53m
Frontier
Deal found 5/8![Frontier logo]()
$224
This CheapOair deal was found by Cheapflights users on 5/11. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/81:28 pm
ONT
- CVG
1 stop27h 20m
Frontier
Sun 7/128:36 pm
CVG
- ONT
1 stop16h 27m
Frontier
Deal found 5/11![Frontier logo]()
$230
This Mytrip deal was found by Cheapflights users on 5/11. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/13:34 pm
ONT
- CVG
1 stop25h 13m
Frontier
Tue 7/79:00 pm
CVG
- ONT
1 stop25h 53m
Frontier
Deal found 5/11![Frontier logo]()
$233
This Mytrip deal was found by Cheapflights users on 5/8. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/136:00 am
ONT
- CVG
1 stop10h 24m
Frontier
Tue 7/149:00 pm
CVG
- ONT
1 stop21h 07m
Frontier
Deal found 5/8![Frontier logo]()
$239
This Booking.com deal was found by Cheapflights users on 5/9. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/26:00 am
ONT
- CVG
1 stop10h 31m
Frontier
Tue 9/88:40 pm
CVG
- ONT
1 stop22h 30m
Frontier
Deal found 5/9![Frontier logo]()
$242
This Booking.com deal was found by Cheapflights users on 5/11. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/106:00 am
ONT
- TYS
1 stop10h 37m
Frontier
Wed 6/178:32 pm
TYS
- ONT
1 stop16h 33m
Frontier
Deal found 5/11![Frontier logo]()
$242
This Expedia deal was found by Cheapflights users on 5/9. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/101:33 pm
ONT
- CVG
1 stop27h 14m
Frontier
Sat 6/138:15 pm
CVG
- ONT
1 stop16h 50m
Frontier
Deal found 5/9![Frontier logo]()
$244
This Gotogate deal was found by Cheapflights users on 5/9. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/203:34 pm
ONT
- CVG
1 stop25h 01m
Frontier
Mon 8/248:36 pm
CVG
- ONT
1 stop6h 13m
Frontier
Deal found 5/9![Frontier logo]()
$248
This Frontier deal was found by Cheapflights users on 5/9. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/136:00 am
ONT
- CVG
1 stop10h 24m
Frontier
Wed 8/198:36 pm
CVG
- ONT
1 stop6h 13m
Frontier
Deal found 5/9![Frontier logo]()
$250
This Booking.com deal was found by Cheapflights users on 5/10. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/93:40 pm
ONT
- CVG
1 stop25h 08m
Frontier
Sun 7/129:00 pm
CVG
- ONT
1 stop21h 07m
Frontier
Deal found 5/10![Frontier logo]()
$251
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 May 13, 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 May 13, 2026.
This CheapOair deal was found by Cheapflights users on 5/12. 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 8/2810:45 am
ONT
- BNA
1 stop28h 41m
Alaska Airlines
Tue 9/17:00 am
BNA
- ONT
1 stop9h 11m
Alaska Airlines
Deal found 5/12![Alaska Airlines logo]()
$350
This Southwest deal was found by Cheapflights users on 5/8. 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 6/111:55 pm
ONT
- SDF
1 stop6h 55m
Southwest
Tue 6/95:35 am
SDF
- ONT
1 stop9h 30m
Southwest
Deal found 5/8![Southwest logo]()
$353
This Booking.com deal was found by Cheapflights users on 5/12. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/146:00 am
ONT
- CVG
1 stop10h 31m
Frontier
Mon 6/159:00 pm
CVG
- ONT
1 stop25h 51m
Frontier
Deal found 5/12![Frontier logo]()
$358
This Delta deal was found by Cheapflights users on 5/8. 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.
Wed 10/712:00 pm
ONT
- TRI
1 stop7h 24m
Delta
Mon 10/123:50 pm
TRI
- ONT
1 stop9h 24m
Delta
Deal found 5/8![Delta logo]()
$359
This American Airlines deal was found by Cheapflights users on 5/10. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/2810:00 pm
ONT
- LEX
1 stop7h 50m
American Airlines
Sat 5/301:30 pm
LEX
- ONT
2 stops11h 32m
American Airlines
Deal found 5/10![American Airlines logo]()
$380
This United Airlines deal was found by Cheapflights users on 5/10. 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 9/17:00 am
ONT
- BNA
1 stop8h 32m
United Airlines
Wed 9/29:52 am
BNA
- ONT
2 stops13h 01m
United Airlines
Deal found 5/10![United Airlines logo]()
$426
This Southwest deal was found by Cheapflights users on 5/8. 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 6/111:55 pm
ONT
- SDF
1 stop6h 55m
Southwest
Thu 6/45:05 pm
SDF
- ONT
1 stop8h 20m
Southwest
Deal found 5/8![Southwest logo]()
$355
This Delta deal was found by Cheapflights users on 5/10. 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.
Wed 5/2710:00 pm
ONT
- TRI
1 stop8h 31m
Delta
Sun 5/313:50 pm
TRI
- ONT
1 stop8h 58m
Delta
Deal found 5/10![Delta logo]()
$369
This American Airlines deal was found by Cheapflights users on 5/8. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/2510:00 pm
ONT
- TRI
1 stop9h 42m
American Airlines
Sat 5/304:12 pm
TRI
- ONT
1 stop9h 24m
American Airlines
Deal found 5/8![American Airlines logo]()
$389
This Alaska Airlines deal was found by Cheapflights users on 5/12. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/47:41 pm
ONT
- BNA
1 stop8h 10m
Alaska Airlines
Sat 6/67:11 am
BNA
- ONT
1 stop9h 58m
Alaska Airlines
Deal found 5/12![Alaska Airlines logo]()
$428
This United Airlines deal was found by Cheapflights users on 5/10. 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.
Sat 8/297:00 am
ONT
- LEX
1 stop7h 11m
United Airlines
Tue 9/19:15 am
LEX
- ONT
1 stop6h 35m
United Airlines
Deal found 5/10![United Airlines logo]()
$431
This Southwest deal was found by Cheapflights users on 5/12. 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.
Fri 7/312:40 pm
ONT
- SDF
1 stop8h 45m
Southwest
Wed 7/810:55 am
SDF
- ONT
1 stop6h 10m
Southwest
Deal found 5/12![Southwest logo]()
$404
This Delta deal was found by Cheapflights users on 5/9. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/59:43 am
ONT
- SDF
2 stops11h 13m
Delta
Sun 8/96:00 am
SDF
- ONT
1 stop7h 42m
Delta
Deal found 5/9![Delta logo]()
$409
This American Airlines deal was found by Cheapflights users on 5/10. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/2612:40 pm
ONT
- TRI
1 stop7h 46m
American Airlines
Sat 5/305:23 pm
TRI
- ONT
1 stop9h 36m
American Airlines
Deal found 5/10![American Airlines logo]()
$419
This United Airlines deal was found by Cheapflights users on 5/10. 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.
Sat 9/191:18 pm
ONT
- LEX
1 stop6h 15m
United Airlines
Tue 9/2211:05 am
LEX
- ONT
1 stop10h 14m
United Airlines
Deal found 5/10![United Airlines logo]()
$431
This Southwest deal was found by Cheapflights users on 5/12. 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.
Fri 9/42:40 pm
ONT
- SDF
1 stop5h 25m
Southwest
Tue 9/88:15 am
SDF
- ONT
1 stop7h 25m
Southwest
Deal found 5/12![Southwest logo]()
$404
This Delta deal was found by Cheapflights users on 5/9. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2011:56 am
ONT
- TYS
1 stop8h 56m
Delta
Mon 8/246:12 pm
TYS
- ONT
1 stop6h 40m
Delta
Deal found 5/9![Delta logo]()
$409
This Alaska Airlines deal was found by Cheapflights users on 5/8. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/256:00 am
ONT
- CVG
1 stop8h 05m
Alaska Airlines
Tue 9/296:05 pm
CVG
- ONT
1 stop8h 19m
Alaska Airlines
Deal found 5/8![Alaska Airlines logo]()
$452
This American Airlines deal was found by Cheapflights users on 5/10. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/1810:10 pm
ONT
- TRI
1 stop9h 32m
American Airlines
Sat 7/255:24 pm
TRI
- ONT
1 stop8h 08m
American Airlines
Deal found 5/10![American Airlines logo]()
$423
This Southwest deal was found by Cheapflights users on 5/9. 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.
Thu 9/35:40 am
ONT
- BNA
2 stops7h 40m
Southwest
Sun 9/66:30 am
BNA
- ONT
1 stop9h 00m
Southwest
Deal found 5/9![Southwest logo]()
$410
This Delta deal was found by Cheapflights users on 5/9. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/711:56 am
ONT
- SDF
1 stop6h 33m
Delta
Thu 8/137:05 am
SDF
- ONT
1 stop6h 37m
Delta
Deal found 5/9![Delta logo]()
$417
This United Airlines deal was found by Cheapflights users on 5/12. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/19:15 am
ONT
- SDF
2 stops10h 13m
United Airlines
Wed 9/211:00 am
SDF
- ONT
2 stops12h 01m
United Airlines
Deal found 5/12![United Airlines logo]()
$462
This CheapOair deal was found by Cheapflights users on 5/12. 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.
Tue 6/27:41 pm
ONT
- BNA
2 stops20h 06m
Alaska Airlines
Sat 6/67:11 am
BNA
- ONT
1 stop9h 58m
Alaska Airlines
Deal found 5/12![Alaska Airlines logo]()
$504
This Delta deal was found by Cheapflights users on 5/10. 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 7/1710:00 pm
ONT
- LEX
1 stop8h 16m
Delta
Mon 7/205:56 pm
LEX
- ONT
1 stop6h 54m
Delta
Deal found 5/10![Delta logo]()
$419
This United Airlines deal was found by Cheapflights users on 5/10. 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.
Sat 5/235:00 am
ONT
- TYS
2 stops12h 56m
United Airlines
Thu 5/284:56 pm
TYS
- ONT
1 stop6h 46m
United Airlines
Deal found 5/10![United Airlines logo]()
$464
This Southwest deal was found by Cheapflights users on 5/10. 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 6/109:55 am
ONT
- BNA
2 stops7h 25m
Southwest
Mon 6/155:15 am
BNA
- ONT
2 stops8h 05m
Southwest
Deal found 5/10![Southwest logo]()
$427
This Alaska Airlines deal was found by Cheapflights users on 5/9. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/196:54 pm
ONT
- BNA
2 stops12h 29m
Alaska Airlines
Thu 10/225:00 am
BNA
- ONT
2 stops15h 00m
Alaska Airlines
Deal found 5/9![Alaska Airlines logo]()
$509
This Delta deal was found by Cheapflights users on 5/12. 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 5/2612:07 pm
ONT
- TRI
1 stop7h 33m
Delta
Sat 5/301:36 pm
TRI
- ONT
2 stops12h 09m
Delta
Deal found 5/12![Delta logo]()
$424
This Southwest deal was found by Cheapflights users on 5/10. 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 6/101:20 pm
ONT
- SDF
1 stop7h 55m
Southwest
Wed 6/1710:55 am
SDF
- ONT
1 stop6h 10m
Southwest
Deal found 5/10![Southwest logo]()
$439
This United Airlines deal was found by Cheapflights users on 5/12. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/66:39 pm
ONT
- BNA
1 stop9h 58m
United Airlines
Fri 7/244:59 pm
BNA
- ONT
1 stop7h 38m
United Airlines
Deal found 5/12![United Airlines logo]()
$485
Last-minute flights from Ontario to KentuckyDiscover last-minute flight deals from Ontario to Kentucky. Data last updated May 13, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Kentucky. Data last updated May 13, 2026 and is based on user searches.
This Booking.com deal was found by Cheapflights users on 5/10. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/246:00 am
ONT
- CVG
1 stop10h 31m
Frontier
Tue 6/28:36 pm
CVG
- ONT
1 stop16h 29m
Frontier
Deal found 5/10![Frontier logo]()
$242
This Booking.com deal was found by Cheapflights users on 5/8. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/276:00 am
ONT
- CVG
1 stop10h 41m
Frontier
Thu 5/288:36 pm
CVG
- ONT
1 stop16h 29m
Frontier
Deal found 5/8![Frontier logo]()
$273
This Gotogate deal was found by Cheapflights users on 5/11. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/296:00 am
ONT
- CVG
1 stop10h 31m
Frontier
Mon 6/18:40 pm
CVG
- ONT
1 stop22h 04m
Frontier
Deal found 5/11![Frontier logo]()
$264
This Booking.com deal was found by Cheapflights users on 5/8. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/306:00 am
ONT
- CVG
1 stop10h 31m
Frontier
Sat 6/68:36 pm
CVG
- ONT
1 stop16h 29m
Frontier
Deal found 5/8![Frontier logo]()
$256
This Mytrip deal was found by Cheapflights users on 5/12. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/3111:51 am
ONT
- CVG
1 stop28h 44m
Frontier
Sat 6/68:36 pm
CVG
- ONT
1 stop16h 29m
Frontier
Deal found 5/12![Frontier logo]()
$263
This Booking.com deal was found by Cheapflights users on 5/11. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/16:00 am
ONT
- TYS
1 stop10h 33m
Frontier
Fri 6/58:32 pm
TYS
- ONT
1 stop16h 33m
Frontier
Deal found 5/11![Frontier logo]()
$282
This Frontier deal was found by Cheapflights users on 5/8. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/56:00 am
ONT
- CVG
1 stop10h 31m
Frontier
Fri 6/128:36 pm
CVG
- ONT
1 stop6h 13m
Frontier
Deal found 5/8![Frontier logo]()
$270
This Frontier deal was found by Cheapflights users on 5/8. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/56:00 am
ONT
- CVG
1 stop10h 31m
Frontier
Thu 6/119:00 pm
CVG
- ONT
1 stop25h 51m
Frontier
Deal found 5/8![Frontier logo]()
$271
This Booking.com deal was found by Cheapflights users on 5/11. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/106:00 am
ONT
- TYS
1 stop10h 37m
Frontier
Wed 6/178:32 pm
TYS
- ONT
1 stop16h 33m
Frontier
Deal found 5/11![Frontier logo]()
$242
This Expedia deal was found by Cheapflights users on 5/9. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/101:33 pm
ONT
- CVG
1 stop27h 14m
Frontier
Sat 6/138:15 pm
CVG
- ONT
1 stop16h 50m
Frontier
Deal found 5/9![Frontier logo]()
$244
This Mytrip deal was found by Cheapflights users on 5/12. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/106:00 am
ONT
- CVG
1 stop10h 10m
Frontier
Fri 6/129:00 pm
CVG
- ONT
1 stop21h 08m
Frontier
Deal found 5/12![Frontier logo]()
$259
This Booking.com deal was found by Cheapflights users on 5/11. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/183:34 pm
ONT
- CVG
1 stop25h 13m
Frontier
Sun 6/289:00 pm
CVG
- ONT
1 stop21h 08m
Frontier
Deal found 5/11![Frontier logo]()
$262
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 May 13, 2026.
Search for one-way flight options from Ontario to Kentucky. Find affordable one-way fares based on user searches. Data last updated May 13, 2026.
This Super.com deal was found by Cheapflights users on 5/12. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/26:00 am
ONT
- BNA
1 stop10h 22m
Frontier
Deal found 5/12![Frontier logo]()
$109
This Super.com deal was found by Cheapflights users on 5/10. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/103:34 pm
ONT
- BNA
1 stop24h 06m
Frontier
Deal found 5/10![Frontier logo]()
$110
This Frontier deal was found by Cheapflights users on 5/12. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/166:00 am
ONT
- BNA
1 stop10h 47m
Frontier
Deal found 5/12![Frontier logo]()
$111
This Trip.com deal was found by Cheapflights users on 5/10. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/193:34 pm
ONT
- BNA
1 stop26h 55m
Frontier
Deal found 5/10![Frontier logo]()
$114
This Mytrip deal was found by Cheapflights users on 5/10. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/56:00 am
ONT
- BNA
1 stop27h 19m
Frontier
Deal found 5/10![Frontier logo]()
$115
This Booking.com deal was found by Cheapflights users on 5/12. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/263:34 pm
ONT
- CVG
1 stop25h 01m
Frontier
Deal found 5/12![Frontier logo]()
$116
This Booking.com deal was found by Cheapflights users on 5/11. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/263:34 pm
ONT
- BNA
1 stop26h 55m
Frontier
Deal found 5/11![Frontier logo]()
$116
This Super.com deal was found by Cheapflights users on 5/11. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/1510:49 am
ONT
- BNA
1 stop22h 30m
Frontier
Deal found 5/11![Frontier logo]()
$119
This Frontier deal was found by Cheapflights users on 5/8. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/276:00 am
ONT
- BNA
1 stop10h 22m
Frontier
Deal found 5/8![Frontier logo]()
$121
This Super.com deal was found by Cheapflights users on 5/9. 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.
Wed 7/11:33 pm
ONT
- BNA
1 stop26h 07m
Frontier
Deal found 5/9![Frontier logo]()
$123
This Super.com deal was found by Cheapflights users on 5/10. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/203:34 pm
ONT
- BNA
1 stop26h 55m
Frontier
Deal found 5/10![Frontier logo]()
$124
This Priceline deal was found by Cheapflights users on 5/11. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/276:00 am
ONT
- CVG
1 stop10h 31m
Frontier
Deal found 5/11![Frontier logo]()
$125
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 May 13, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $210 (Gotogate) |
One-way from | $109 (Super.com) |
Popular in | April |
Cheapest in | June |
Average price | $418 |
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 May 13, 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
OntarioNashville
ONT - BNA
ONTBNA
Ontario
Fri 8/28
10:45 am-5:26 pm
1 stop28h 41m
Nashville Intl
Tue 9/1
7:00 am-2:11 pm
1 stop9h 11m
$350
OntarioLouisville
ONT - SDF
ONTSDF
Ontario
Mon 6/1
11:55 pm-9:50 am
1 stop6h 55m
Louisville Intl
Tue 6/9
5:35 am-12:05 pm
1 stop9h 30m
$353
OntarioLouisville
ONT - SDF
ONTSDF
Ontario
Mon 6/1
11:55 pm-9:50 am
1 stop6h 55m
Louisville Intl
Thu 6/4
5:05 pm-10:25 pm
1 stop8h 20m
$355
OntarioCincinnati
ONT - CVG
ONTCVG
Ontario
Sun 6/14
6:00 am-7:31 pm
1 stop10h 31m
Cincinnati Cinci./N. Kentucky
Mon 6/15
9:00 pm-7:51 pm
1 stop25h 51m
$358
OntarioBlountville
ONT - TRI
ONTTRI
Ontario
Wed 10/7
12:00 pm-10:24 pm
1 stop7h 24m
Blountville Tri Cities TN/VA
Mon 10/12
3:50 pm-10:14 pm
1 stop9h 24m
$359
OntarioBlountville
ONT - TRI
ONTTRI
Ontario
Wed 5/27
10:00 pm-9:31 am
1 stop8h 31m
Blountville Tri Cities TN/VA
Sun 5/31
3:50 pm-9:48 pm
1 stop8h 58m
$369
OntarioLexington
ONT - LEX
ONTLEX
Ontario
Thu 5/28
10:00 pm-8:50 am
1 stop7h 50m
Lexington Blue Grass
Sat 5/30
1:30 pm-10:02 pm
2 stops11h 32m
$380
OntarioBlountville
ONT - TRI
ONTTRI
Ontario
Mon 5/25
10:00 pm-10:42 am
1 stop9h 42m
Blountville Tri Cities TN/VA
Sat 5/30
4:12 pm-10:36 pm
1 stop9h 24m
$389
OntarioLouisville
ONT - SDF
ONTSDF
Ontario
Fri 7/3
12:40 pm-12:25 am
1 stop8h 45m
Louisville Intl
Wed 7/8
10:55 am-2:05 pm
1 stop6h 10m
$404
Quickest round-trip
OntarioLouisville
ONT - SDF
ONTSDF
Ontario
Fri 9/4
2:40 pm-11:05 pm
1 stop5h 25m
Louisville Intl
Tue 9/8
8:15 am-12:40 pm
1 stop7h 25m
$404
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-TRI
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 $75). Flying from Ontario to Kentucky in November is currently the most expensive (average of $373). 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 May 13, 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.
Crew
8.6
Food
7.0
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Overall
7.9
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
Crew
8.6
Food
7.0
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Overall
7.9
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
Crew
8.6
Food
7.0
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Overall
7.9
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
Crew
8.6
Food
7.0
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Overall
7.9
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
Crew
8.6
Food
7.0
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Overall
7.9
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 May 13, 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 May 13, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$228 | Average$436 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$238 | Average$462 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$288 | Average$460 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$341 | Average$468 | FlexibilityNo cancel fee | On-time63% |