$120+ 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 9/9. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — SDF
Jul 31 — Aug 71
Round-trip
1 adult, Economy
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Find cheap flights from Ontario to Kentucky with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Ontario to Kentucky
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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 1, 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 1, 2026.
This Frontier deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” 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 8/138:17 am
ONT
- CVG
1 stop7h 05m
Frontier
Thu 8/138:34 pm
CVG
- ONT
1 stop6h 16m
Frontier
Deal found 6/30![Frontier logo]()
$243
This Frontier deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” 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 8/116:00 am
ONT
- CVG
1 stop10h 29m
Frontier
Mon 8/178:34 pm
CVG
- ONT
1 stop6h 16m
Frontier
Deal found 6/30![Frontier logo]()
$248
This Booking.com deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/68:17 am
ONT
- CVG
1 stop7h 05m
Frontier
Mon 8/109:27 pm
CVG
- ONT
1 stop13h 36m
Frontier
Deal found 7/1![Frontier logo]()
$256
This Frontier deal was found by Cheapflights users on 6/29. Clicking the “Pick Dates” 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 7/296:00 am
ONT
- CVG
1 stop10h 31m
Frontier
Tue 8/188:30 pm
CVG
- ONT
1 stop6h 20m
Frontier
Deal found 6/29![Frontier logo]()
$258
This Booking.com deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/293:40 pm
ONT
- CVG
1 stop25h 45m
Frontier
Wed 8/58:34 pm
CVG
- ONT
1 stop6h 16m
Frontier
Deal found 7/1![Frontier logo]()
$261
This Frontier deal was found by Cheapflights users on 6/27. Clicking the “Pick Dates” 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.
Mon 8/106:00 am
ONT
- CVG
1 stop10h 29m
Frontier
Thu 8/138:34 pm
CVG
- ONT
1 stop6h 16m
Frontier
Deal found 6/27![Frontier logo]()
$264
This CheapOair deal was found by Cheapflights users on 6/27. Clicking the “Pick Dates” 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.
Sat 8/86:00 am
ONT
- CVG
1 stop10h 29m
Frontier
Tue 8/118:34 pm
CVG
- ONT
1 stop16h 30m
Frontier
Deal found 6/27![Frontier logo]()
$268
This CheapOair deal was found by Cheapflights users on 6/27. Clicking the “Pick Dates” 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.
Sat 8/86:00 am
ONT
- CVG
1 stop10h 29m
Frontier
Mon 8/109:27 pm
CVG
- ONT
1 stop20h 47m
Frontier
Deal found 6/27![Frontier logo]()
$271
This CheapOair deal was found by Cheapflights users on 6/29. Clicking the “Pick Dates” 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 9/249:12 pm
ONT
- CVG
1 stop20h 09m
Frontier
Mon 9/289:30 pm
CVG
- ONT
1 stop19h 27m
Frontier
Deal found 6/29![Frontier logo]()
$274
This Frontier deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” 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 8/86:00 am
ONT
- CVG
1 stop10h 29m
Frontier
Sat 8/158:26 pm
CVG
- ONT
1 stop6h 24m
Frontier
Deal found 6/30![Frontier logo]()
$278
This CheapOair deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” 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 10/152:58 pm
ONT
- CVG
1 stop26h 23m
Frontier
Tue 10/206:05 am
CVG
- ONT
1 stop7h 38m
Frontier
Deal found 6/30![Frontier logo]()
$279
This Kiwi.com deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” 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.
Sat 10/312:35 pm
ONT
- TYS
1 stop20h 36m
Multiple Airlines
Mon 11/29:42 pm
TYS
- ONT
1 stop21h 28m
Multiple Airlines
Deal found 6/28![Multiple Airlines logo]()
$285
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 1, 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 1, 2026.
This Southwest deal was found by Cheapflights users on 6/27. Clicking the “Pick Dates” 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 8/111:50 pm
ONT
- SDF
1 stop5h 40m
Southwest
Thu 8/133:20 pm
SDF
- ONT
2 stops8h 00m
Southwest
Deal found 6/27![Southwest logo]()
$306
This Delta deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” 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 7/2010:00 pm
ONT
- TRI
1 stop8h 35m
Delta
Mon 7/271:42 pm
TRI
- ONT
1 stop7h 48m
Delta
Deal found 6/28![Delta logo]()
$349
This CheapOair deal was found by Cheapflights users on 6/26. Clicking the “Pick Dates” 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.
Sun 7/126:00 am
ONT
- BNA
1 stop27h 32m
Frontier
Sat 7/2512:17 pm
BNA
- ONT
1 stop23h 47m
Frontier
Deal found 6/26![Frontier logo]()
$355
This United Airlines deal was found by Cheapflights users on 6/27. Clicking the “Pick Dates” 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 10/147:00 am
ONT
- CVG
1 stop7h 00m
United Airlines
Tue 10/205:30 am
CVG
- ONT
2 stops10h 16m
United Airlines
Deal found 6/27![United Airlines logo]()
$372
This American Airlines deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” 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 stop9h 35m
American Airlines
Deal found 6/30![American Airlines logo]()
$384
This Delta deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” 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
- TRI
1 stop8h 33m
Delta
Wed 9/306:00 am
TRI
- ONT
2 stops13h 35m
Delta
Deal found 6/30![Delta logo]()
$354
This Southwest deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/138:25 am
ONT
- CVG
2 stops7h 25m
Southwest
Tue 10/203:30 pm
CVG
- ONT
2 stops9h 30m
Southwest
Deal found 7/1![Southwest logo]()
$377
This United Airlines deal was found by Cheapflights users on 6/29. Clicking the “Pick Dates” 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 9/226:20 pm
SDF
- ONT
1 stop7h 39m
United Airlines
Deal found 6/29![United Airlines logo]()
$387
This American Airlines deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” 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 7/302:15 pm
ONT
- TRI
1 stop7h 13m
American Airlines
Sat 8/87:00 am
TRI
- ONT
1 stop7h 43m
American Airlines
Deal found 6/28![American Airlines logo]()
$408
This Delta deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/2210:00 pm
ONT
- SDF
1 stop7h 54m
Delta
Thu 7/301:02 pm
SDF
- ONT
1 stop8h 28m
Delta
Deal found 6/28![Delta logo]()
$373
This Southwest deal was found by Cheapflights users on 6/27. Clicking the “Pick Dates” 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 10/146:15 am
ONT
- CVG
2 stops9h 20m
Southwest
Tue 10/207:00 am
CVG
- ONT
2 stops10h 00m
Southwest
Deal found 6/27![Southwest logo]()
$377
This Delta deal was found by Cheapflights users on 6/27. Clicking the “Pick Dates” 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 8/710:00 pm
ONT
- LEX
1 stop9h 09m
Delta
Thu 8/135:56 pm
LEX
- ONT
1 stop6h 56m
Delta
Deal found 6/27![Delta logo]()
$374
This Southwest deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/152:10 pm
ONT
- BNA
1 stop5h 50m
Southwest
Sat 9/1912:25 pm
BNA
- ONT
Nonstop4h 05m
Southwest
Deal found 7/1![Southwest logo]()
$382
This United Airlines deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” 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
- LEX
1 stop7h 10m
United Airlines
Tue 9/225:57 pm
LEX
- ONT
1 stop8h 02m
United Airlines
Deal found 6/28![United Airlines logo]()
$431
This American Airlines deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” 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.
Sun 7/2610:10 pm
ONT
- TRI
1 stop9h 32m
American Airlines
Sun 8/26:00 am
TRI
- ONT
1 stop6h 29m
American Airlines
Deal found 6/28![American Airlines logo]()
$448
This Southwest deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/305:30 am
ONT
- CVG
2 stops10h 10m
Southwest
Mon 11/23:35 pm
CVG
- ONT
1 stop7h 15m
Southwest
Deal found 7/1![Southwest logo]()
$390
This United Airlines deal was found by Cheapflights users on 6/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/91:18 pm
ONT
- LEX
1 stop6h 20m
United Airlines
Wed 9/1610:20 am
LEX
- ONT
2 stops12h 41m
United Airlines
Deal found 6/27![United Airlines logo]()
$436
This Delta deal was found by Cheapflights users on 6/29. Clicking the “Pick Dates” 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 8/2810:00 pm
ONT
- TRI
1 stop8h 30m
Delta
Sun 8/303:46 pm
TRI
- ONT
1 stop9h 06m
Delta
Deal found 6/29![Delta logo]()
$414
This Southwest deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” 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 7/308:35 am
ONT
- SDF
1 stop12h 55m
Southwest
Thu 8/611:05 am
SDF
- ONT
1 stop7h 00m
Southwest
Deal found 6/30![Southwest logo]()
$391
This American Airlines deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/1012:35 pm
ONT
- TRI
1 stop8h 53m
American Airlines
Sat 7/185:24 pm
TRI
- ONT
1 stop8h 08m
American Airlines
Deal found 6/30![American Airlines logo]()
$488
This United Airlines deal was found by Cheapflights users on 6/27. Clicking the “Pick Dates” 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 8/189:15 am
ONT
- TYS
1 stop9h 30m
United Airlines
Tue 8/256:02 pm
TYS
- ONT
1 stop7h 33m
United Airlines
Deal found 6/27![United Airlines logo]()
$445
This Delta deal was found by Cheapflights users on 6/27. Clicking the “Pick Dates” 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 8/2410:00 pm
ONT
- LEX
1 stop8h 24m
Delta
Mon 8/316:00 am
LEX
- ONT
1 stop7h 42m
Delta
Deal found 6/27![Delta logo]()
$414
This Southwest deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” 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 10/215:30 am
ONT
- TYS
2 stops10h 00m
Southwest
Wed 10/284:05 pm
TYS
- ONT
1 stop8h 35m
Southwest
Deal found 6/28![Southwest logo]()
$397
This United Airlines deal was found by Cheapflights users on 6/29. Clicking the “Pick Dates” 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 8/269:00 am
TYS
- ONT
1 stop6h 50m
United Airlines
Deal found 6/29![United Airlines logo]()
$445
This American Airlines deal was found by Cheapflights users on 6/29. Clicking the “Pick Dates” 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 6/29![American Airlines logo]()
$499
This Delta deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/267:05 am
ONT
- CVG
1 stop7h 15m
Delta
Wed 9/307:35 am
CVG
- ONT
1 stop7h 39m
Delta
Deal found 7/1![Delta logo]()
$433
This Southwest deal was found by Cheapflights users on 6/29. Clicking the “Pick Dates” 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 8/145:15 am
ONT
- TYS
2 stops7h 40m
Southwest
Tue 8/181:55 pm
TYS
- ONT
2 stops10h 00m
Southwest
Deal found 6/29![Southwest logo]()
$411
This United Airlines deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” 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 9/57:00 am
ONT
- TYS
1 stop6h 58m
United Airlines
Wed 9/94:50 pm
TYS
- ONT
1 stop7h 03m
United Airlines
Deal found 6/30![United Airlines logo]()
$455
This American Airlines deal was found by Cheapflights users on 6/29. Clicking the “Pick Dates” 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 8/116:00 am
ONT
- HTS
2 stops13h 58m
American Airlines
Sat 8/226:10 am
HTS
- ONT
2 stops15h 05m
American Airlines
Deal found 6/29![American Airlines logo]()
$517
This Delta deal was found by Cheapflights users on 6/27. Clicking the “Pick Dates” 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 9/56:00 am
ONT
- BNA
1 stop5h 57m
Delta
Mon 9/75:14 am
BNA
- ONT
1 stop7h 28m
Delta
Deal found 6/27![Delta logo]()
$433
Last-minute flights from Ontario to KentuckyDiscover last-minute flight deals from Ontario to Kentucky. Data last updated July 1, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Kentucky. Data last updated July 1, 2026 and is based on user searches.
This Frontier deal was found by Cheapflights users on 6/27. Clicking the “Pick Dates” 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 7/286:00 am
ONT
- CVG
1 stop10h 31m
Frontier
Wed 8/58:34 pm
CVG
- ONT
1 stop6h 16m
Frontier
Deal found 6/27![Frontier logo]()
$284
This Frontier deal was found by Cheapflights users on 6/27. Clicking the “Pick Dates” 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 7/286:00 am
ONT
- CVG
1 stop10h 31m
Frontier
Thu 8/68:34 pm
CVG
- ONT
1 stop6h 16m
Frontier
Deal found 6/27![Frontier logo]()
$287
This Frontier deal was found by Cheapflights users on 6/29. Clicking the “Pick Dates” 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 7/296:00 am
ONT
- CVG
1 stop10h 31m
Frontier
Tue 8/188:30 pm
CVG
- ONT
1 stop6h 20m
Frontier
Deal found 6/29![Frontier logo]()
$258
This Booking.com deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/293:40 pm
ONT
- CVG
1 stop25h 45m
Frontier
Wed 8/58:34 pm
CVG
- ONT
1 stop6h 16m
Frontier
Deal found 7/1![Frontier logo]()
$261
This American Airlines deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” 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 8/512:33 pm
ONT
- SDF
1 stop6h 44m
American Airlines
Tue 8/117:03 am
SDF
- ONT
1 stop7h 40m
American Airlines
Deal found 6/28![American Airlines logo]()
$287
This Booking.com deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/68:17 am
ONT
- CVG
1 stop7h 05m
Frontier
Mon 8/109:27 pm
CVG
- ONT
1 stop13h 36m
Frontier
Deal found 7/1![Frontier logo]()
$256
This CheapOair deal was found by Cheapflights users on 6/27. Clicking the “Pick Dates” 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.
Sat 8/86:00 am
ONT
- CVG
1 stop10h 29m
Frontier
Tue 8/118:34 pm
CVG
- ONT
1 stop16h 30m
Frontier
Deal found 6/27![Frontier logo]()
$268
This CheapOair deal was found by Cheapflights users on 6/27. Clicking the “Pick Dates” 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.
Sat 8/86:00 am
ONT
- CVG
1 stop10h 29m
Frontier
Mon 8/109:27 pm
CVG
- ONT
1 stop20h 47m
Frontier
Deal found 6/27![Frontier logo]()
$271
This Frontier deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” 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 8/86:00 am
ONT
- CVG
1 stop10h 29m
Frontier
Sat 8/298:30 pm
CVG
- ONT
1 stop6h 20m
Frontier
Deal found 6/30![Frontier logo]()
$278
This Frontier deal was found by Cheapflights users on 6/27. Clicking the “Pick Dates” 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.
Mon 8/106:00 am
ONT
- CVG
1 stop10h 29m
Frontier
Thu 8/138:34 pm
CVG
- ONT
1 stop6h 16m
Frontier
Deal found 6/27![Frontier logo]()
$264
This Frontier deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” 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 8/116:00 am
ONT
- CVG
1 stop10h 29m
Frontier
Sat 8/158:26 pm
CVG
- ONT
1 stop6h 24m
Frontier
Deal found 6/30![Frontier logo]()
$248
This Frontier deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” 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 8/138:17 am
ONT
- CVG
1 stop7h 05m
Frontier
Thu 8/138:34 pm
CVG
- ONT
1 stop6h 16m
Frontier
Deal found 6/30![Frontier logo]()
$243
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 1, 2026.
Search for one-way flight options from Ontario to Kentucky. Find affordable one-way fares based on user searches. Data last updated July 1, 2026.
This Trip.com deal was found by Cheapflights users on 6/29. Clicking the “Pick Dates” 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 9/96:00 am
ONT
- BNA
1 stop10h 47m
Frontier
Deal found 6/29![Frontier logo]()
$120
This Super.com deal was found by Cheapflights users on 6/29. Clicking the “Pick Dates” 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.
Mon 8/318:17 am
ONT
- CVG
1 stop7h 05m
Frontier
Deal found 6/29![Frontier logo]()
$122
This Frontier deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2010:49 am
ONT
- CVG
1 stop5h 46m
Frontier
Deal found 7/1![Frontier logo]()
$124
This Trip.com deal was found by Cheapflights users on 6/29. Clicking the “Pick Dates” 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 9/166:00 am
ONT
- BNA
1 stop10h 47m
Frontier
Deal found 6/29![Frontier logo]()
$125
This Kiwi.com deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” 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 8/257:56 pm
ONT
- BNA
1 stop14h 14m
Frontier
Deal found 6/30![Frontier logo]()
$126
This Super.com deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” 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.
Mon 8/178:17 am
ONT
- BNA
1 stop8h 56m
Frontier
Deal found 6/30![Frontier logo]()
$127
This Super.com deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” 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 8/126:00 am
ONT
- CVG
1 stop10h 29m
Frontier
Deal found 6/30![Frontier logo]()
$128
This Super.com deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” 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 7/286:00 am
ONT
- BNA
1 stop27h 32m
Frontier
Deal found 6/30![Frontier logo]()
$128
This Frontier deal was found by Cheapflights users on 6/27. Clicking the “Pick Dates” 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.
Mon 8/108:17 am
ONT
- BNA
1 stop8h 56m
Frontier
Deal found 6/27![Frontier logo]()
$129
This Frontier deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/196:00 am
ONT
- CVG
1 stop10h 25m
Frontier
Deal found 7/1![Frontier logo]()
$130
This Booking.com deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/46:00 am
ONT
- BNA
1 stop27h 40m
Frontier
Deal found 7/1![Frontier logo]()
$130
This Frontier deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” 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.
Mon 8/108:17 am
ONT
- CVG
1 stop7h 05m
Frontier
Deal found 6/28![Frontier logo]()
$132
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 1, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $243 (Frontier) |
One-way from | $120 (Trip.com) |
Popular in | February |
Cheapest in | July |
Average price | $228 |
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 1, 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 8/11
1:50 pm-10:30 pm
1 stop5h 40m
Louisville Intl
Thu 8/13
3:20 pm-8:20 pm
2 stops8h 00m
$306
OntarioBlountville
ONT - TRI
ONTTRI
Ontario
Mon 7/20
10:00 pm-9:35 am
1 stop8h 35m
Blountville Tri Cities TN/VA
Mon 7/27
1:42 pm-6:30 pm
1 stop7h 48m
$349
OntarioBlountville
ONT - TRI
ONTTRI
Ontario
Fri 9/25
10:00 pm-9:33 am
1 stop8h 33m
Blountville Tri Cities TN/VA
Wed 9/30
6:00 am-4:35 pm
2 stops13h 35m
$354
OntarioNashville
ONT - BNA
ONTBNA
Ontario
Sun 7/12
6:00 am-11:32 am
1 stop27h 32m
Nashville Intl
Sat 7/25
12:17 pm-10:04 am
1 stop23h 47m
$355
OntarioCincinnati
ONT - CVG
ONTCVG
Ontario
Wed 10/14
7:00 am-5:00 pm
1 stop7h 00m
Cincinnati Cinci./N. Kentucky
Tue 10/20
5:30 am-12:46 pm
2 stops10h 16m
$372
OntarioLouisville
ONT - SDF
ONTSDF
Ontario
Wed 7/22
10:00 pm-8:54 am
1 stop7h 54m
Louisville Intl
Thu 7/30
1:02 pm-6:30 pm
1 stop8h 28m
$373
OntarioLexington
ONT - LEX
ONTLEX
Ontario
Fri 8/7
10:00 pm-10:09 am
1 stop9h 09m
Lexington Blue Grass
Thu 8/13
5:56 pm-9:52 pm
1 stop6h 56m
$374
OntarioCincinnati
ONT - CVG
ONTCVG
Ontario
Tue 10/13
8:25 am-6:50 pm
2 stops7h 25m
Cincinnati Cinci./N. Kentucky
Tue 10/20
3:30 pm-10:00 pm
2 stops9h 30m
$377
OntarioCincinnati
ONT - CVG
ONTCVG
Ontario
Wed 10/14
6:15 am-6:35 pm
2 stops9h 20m
Cincinnati Cinci./N. Kentucky
Tue 10/20
7:00 am-2:00 pm
2 stops10h 00m
$377
Quickest round-trip
OntarioNashville
ONT - BNA
ONTBNA
Ontario
Tue 9/15
2:10 pm-10:00 pm
1 stop5h 50m
Nashville Intl
Sat 9/19
12:25 pm-2:30 pm
Nonstop4h 05m
$382
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-BNA
ONT-SDF
ONT-TRI
ONT-TYS
ONT-CVG
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-BNA
ONT-SDF
ONT-TRI
ONT-TYS
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 $120). 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 1, 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
Entertainment
7.5
Overall
7.9
Comfort
8.0
Food
7.0
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Boarding
8.1
Crew
8.6
Entertainment
7.5
Overall
7.9
Comfort
8.0
Food
7.0
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Boarding
8.1
Crew
8.6
Entertainment
7.5
Overall
7.9
Comfort
8.0
Food
7.0
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Boarding
8.1
Crew
8.6
Entertainment
7.5
Overall
7.9
Comfort
8.0
Food
7.0
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Boarding
8.1
Crew
8.6
Entertainment
7.5
Overall
7.9
Comfort
8.0
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 1, 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 1, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$228 | Average$429 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$288 | Average$496 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$326 | Average$482 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$350 | Average$486 | FlexibilityNo cancel fee | On-time63% |