$83+ 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 3/4. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — SDF
Mar 5 — Mar 121
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
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
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
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
Cheapest
Best
Last-minute
One-way
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 February 3, 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 February 3, 2026.
This Expedia deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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.
Thu 2/267:22 pm
ONT
- CVG
1 stop26h 00m
Frontier
Mon 3/27:00 am
CVG
- ONT
1 stop19h 59m
Frontier
Deal found 2/2![Frontier logo]()
$168
This CheapOair deal was found by Cheapflights users on 2/1. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/262:08 pm
ONT
- TYS
1 stop24h 58m
Frontier
Mon 3/28:13 pm
TYS
- ONT
1 stop28h 21m
Frontier
Deal found 2/1![Frontier logo]()
$211
This CheapOair deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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 2/257:17 pm
ONT
- CVG
1 stop25h 42m
Frontier
Sun 3/17:00 am
CVG
- ONT
1 stop19h 59m
Frontier
Deal found 2/2![Frontier logo]()
$215
This Kiwi.com deal was found by Cheapflights users on 2/1. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/276:00 am
ONT
- BNA
1 stop10h 44m
Frontier
Mon 3/26:19 pm
BNA
- ONT
2 stops29h 15m
Frontier
Deal found 2/1![Frontier logo]()
$218
This Kiwi.com deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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 3/69:44 pm
ONT
- BNA
1 stop28h 19m
Multiple Airlines
Mon 3/168:41 pm
BNA
- ONT
1 stop18h 47m
Multiple Airlines
Deal found 2/2![Multiple Airlines logo]()
$224
This Priceline deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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.
Fri 2/206:00 am
ONT
- TYS
1 stop10h 27m
Frontier
Mon 2/238:13 pm
TYS
- ONT
1 stop6h 46m
Frontier
Deal found 2/2![Frontier logo]()
$224
This Kiwi.com deal was found by Cheapflights users on 2/1. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/14:52 pm
ONT
- BNA
1 stop10h 18m
Multiple Airlines
Sat 4/48:41 pm
BNA
- ONT
1 stop13h 23m
Multiple Airlines
Deal found 2/1![Multiple Airlines logo]()
$225
This Super.com deal was found by Cheapflights users on 2/1. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/262:06 pm
ONT
- CVG
1 stop7h 53m
Frontier
Fri 2/277:00 am
CVG
- ONT
1 stop19h 59m
Frontier
Deal found 2/1![Frontier logo]()
$226
This Kiwi.com deal was found by Cheapflights users on 1/31. Clicking the “Pick Dates” 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 3/287:31 pm
ONT
- BNA
1 stop7h 39m
Multiple Airlines
Thu 4/23:14 pm
BNA
- ONT
1 stop10h 42m
Multiple Airlines
Deal found 1/31![Multiple Airlines logo]()
$226
This Booking.com deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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 4/26:20 am
ONT
- CVG
1 stop25h 21m
Frontier
Tue 4/77:20 am
CVG
- ONT
1 stop19h 36m
Frontier
Deal found 2/2![Frontier logo]()
$227
This Kiwi.com deal was found by Cheapflights users on 2/1. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/242:23 pm
ONT
- BNA
2 stops21h 53m
Multiple Airlines
Tue 3/318:41 pm
BNA
- ONT
1 stop21h 16m
Multiple Airlines
Deal found 2/1![Multiple Airlines logo]()
$227
This Kiwi.com deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/152:44 pm
ONT
- CVG
2 stops22h 15m
Frontier
Sun 4/198:48 pm
CVG
- ONT
1 stop14h 16m
Frontier
Deal found 2/2![Frontier logo]()
$228
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 February 3, 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 February 3, 2026.
This Expedia deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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.
Thu 2/267:22 pm
ONT
- CVG
1 stop26h 00m
Frontier
Mon 3/27:00 am
CVG
- ONT
1 stop19h 59m
Frontier
Deal found 2/2![Frontier logo]()
$168
This United Airlines deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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 3/46:37 pm
ONT
- CVG
2 stops12h 11m
United Airlines
Wed 3/117:03 am
CVG
- ONT
2 stops8h 45m
United Airlines
Deal found 2/2![United Airlines logo]()
$267
This Orbitz deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/17:59 pm
ONT
- CVG
1 stop18h 59m
Multiple Airlines
Mon 5/47:59 pm
CVG
- ONT
1 stop6h 56m
Multiple Airlines
Deal found 2/2![Multiple Airlines logo]()
$272
This Delta deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” 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 4/71:20 pm
ONT
- BNA
1 stop6h 18m
Delta
Tue 4/147:20 am
BNA
- ONT
1 stop6h 54m
Delta
Deal found 2/3![Delta logo]()
$285
This Southwest deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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 5/1311:55 pm
ONT
- SDF
1 stop7h 00m
Southwest
Tue 5/194:40 pm
SDF
- ONT
2 stops8h 30m
Southwest
Deal found 2/2![Southwest logo]()
$326
This American Airlines deal was found by Cheapflights users on 2/1. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/1810:37 pm
ONT
- LEX
1 stop9h 14m
American Airlines
Wed 3/112:03 pm
LEX
- ONT
1 stop7h 39m
American Airlines
Deal found 2/1![American Airlines logo]()
$334
This Kiwi.com deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/152:44 pm
ONT
- CVG
2 stops22h 15m
Frontier
Sun 4/198:48 pm
CVG
- ONT
1 stop14h 16m
Frontier
Deal found 2/2![Frontier logo]()
$228
This Kiwi.com deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/292:44 pm
ONT
- CVG
2 stops22h 15m
Frontier
Mon 5/48:48 pm
CVG
- ONT
1 stop24h 46m
Frontier
Deal found 2/2![Frontier logo]()
$230
This United Airlines deal was found by Cheapflights users on 1/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/241:43 pm
ONT
- BNA
1 stop6h 03m
United Airlines
Tue 5/124:28 pm
BNA
- ONT
1 stop7h 30m
United Airlines
Deal found 1/31![United Airlines logo]()
$285
This Delta deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” 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 4/811:59 am
ONT
- BNA
1 stop9h 53m
Delta
Wed 4/157:20 pm
BNA
- ONT
1 stop6h 24m
Delta
Deal found 2/3![Delta logo]()
$285
This CheapOair deal was found by Cheapflights users on 1/31. Clicking the “Pick Dates” 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 4/238:59 pm
ONT
- CVG
1 stop6h 16m
Frontier
Sun 4/268:48 pm
CVG
- ONT
1 stop26h 16m
Frontier
Deal found 1/31![Frontier logo]()
$236
This Kiwi.com deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/292:44 pm
ONT
- CVG
1 stop23h 17m
Multiple Airlines
Mon 5/48:48 pm
CVG
- ONT
1 stop19h 52m
Multiple Airlines
Deal found 2/2![Multiple Airlines logo]()
$295
This United Airlines deal was found by Cheapflights users on 1/31. Clicking the “Pick Dates” 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 4/211:34 pm
ONT
- BNA
1 stop6h 13m
United Airlines
Tue 4/284:35 pm
BNA
- ONT
1 stop7h 15m
United Airlines
Deal found 1/31![United Airlines logo]()
$285
This Delta deal was found by Cheapflights users on 2/1. 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.
Fri 4/101:20 pm
ONT
- BNA
1 stop6h 18m
Delta
Wed 4/157:00 am
BNA
- ONT
1 stop8h 39m
Delta
Deal found 2/1![Delta logo]()
$285
This American Airlines deal was found by Cheapflights users on 2/1. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/2010:37 pm
ONT
- LEX
1 stop9h 14m
American Airlines
Sun 2/227:10 pm
LEX
- ONT
1 stop7h 49m
American Airlines
Deal found 2/1![American Airlines logo]()
$334
This United Airlines deal was found by Cheapflights users on 1/31. Clicking the “Pick Dates” 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 4/226:49 pm
ONT
- BNA
1 stop9h 37m
United Airlines
Tue 5/124:28 pm
BNA
- ONT
1 stop7h 30m
United Airlines
Deal found 1/31![United Airlines logo]()
$285
This Delta deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” 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 3/3012:57 pm
ONT
- BNA
1 stop5h 54m
Delta
Wed 4/17:22 pm
BNA
- ONT
1 stop6h 29m
Delta
Deal found 2/3![Delta logo]()
$285
This Delta deal was found by Cheapflights users on 2/1. 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 3/1410:25 pm
ONT
- BNA
1 stop7h 11m
Delta
Tue 3/176:00 am
BNA
- ONT
2 stops12h 28m
Delta
Deal found 2/1![Delta logo]()
$290
This United Airlines deal was found by Cheapflights users on 2/1. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/246:00 am
ONT
- BNA
1 stop5h 55m
United Airlines
Tue 3/3111:32 am
BNA
- ONT
2 stops11h 04m
United Airlines
Deal found 2/1![United Airlines logo]()
$290
This Kiwi.com deal was found by Cheapflights users on 1/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/14:52 pm
ONT
- TYS
2 stops36h 18m
Multiple Airlines
Mon 4/61:33 pm
TYS
- ONT
1 stop9h 34m
Multiple Airlines
Deal found 1/31![Multiple Airlines logo]()
$351
This CheapOair deal was found by Cheapflights users on 2/1. 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 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 stop14h 49m
Frontier
Mon 5/48:48 pm
CVG
- ONT
1 stop19h 52m
Frontier
Deal found 2/1![Frontier logo]()
$291
This Southwest deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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 3/29:45 am
ONT
- SDF
1 stop5h 55m
Southwest
Wed 3/46:00 am
SDF
- ONT
1 stop7h 20m
Southwest
Deal found 2/2![Southwest logo]()
$432
This Gotogate deal was found by Cheapflights users on 1/31. Clicking the “Pick Dates” 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 2/122:06 pm
ONT
- CVG
1 stop7h 53m
Frontier
Thu 2/191:19 pm
CVG
- ONT
1 stop8h 08m
Frontier
Deal found 1/31![Frontier logo]()
$297
This Delta deal was found by Cheapflights users on 2/1. 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.
Wed 3/1112:57 pm
ONT
- TRI
1 stop6h 31m
Delta
Wed 3/186:15 am
TRI
- ONT
1 stop8h 32m
Delta
Deal found 2/1![Delta logo]()
$309
This United Airlines deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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 5/131:40 pm
ONT
- SDF
1 stop5h 51m
United Airlines
Tue 5/195:47 pm
SDF
- ONT
1 stop7h 43m
United Airlines
Deal found 2/2![United Airlines logo]()
$321
This Southwest deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” 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 4/33:05 pm
ONT
- SDF
1 stop6h 40m
Southwest
Mon 4/67:00 am
SDF
- ONT
1 stop8h 40m
Southwest
Deal found 2/3![Southwest logo]()
$437
This American Airlines deal was found by Cheapflights users on 2/1. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/1811:58 pm
ONT
- TYS
1 stop8h 32m
American Airlines
Mon 3/236:21 pm
TYS
- ONT
1 stop7h 09m
American Airlines
Deal found 2/1![American Airlines logo]()
$438
This Kiwi.com deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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 3/2711:17 am
ONT
- TYS
1 stop8h 22m
Multiple Airlines
Mon 3/301:36 pm
TYS
- ONT
1 stop26h 52m
Multiple Airlines
Deal found 2/2![Multiple Airlines logo]()
$432
This American Airlines deal was found by Cheapflights users on 2/1. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/42:39 pm
ONT
- EVV
1 stop6h 49m
American Airlines
Sat 3/73:50 pm
EVV
- ONT
1 stop8h 59m
American Airlines
Deal found 2/1![American Airlines logo]()
$439
This Southwest deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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 5/299:55 pm
ONT
- SDF
2 stops9h 10m
Southwest
Mon 6/112:20 pm
SDF
- ONT
1 stop7h 05m
Southwest
Deal found 2/2![Southwest logo]()
$442
Last-minute flights from Ontario to KentuckyDiscover last-minute flight deals from Ontario to Kentucky. Data last updated February 3, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Kentucky. Data last updated February 3, 2026 and is based on user searches.
This Trip.com deal was found by Cheapflights users on 1/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/197:22 pm
ONT
- BNA
1 stop7h 46m
Multiple Airlines
Mon 2/238:45 pm
BNA
- ONT
1 stop19h 07m
Multiple Airlines
Deal found 1/31![Multiple Airlines logo]()
$229
This Priceline deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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.
Fri 2/206:00 am
ONT
- TYS
1 stop10h 27m
Frontier
Mon 2/238:13 pm
TYS
- ONT
1 stop6h 46m
Frontier
Deal found 2/2![Frontier logo]()
$224
This CheapOair deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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 2/257:17 pm
ONT
- CVG
1 stop25h 42m
Frontier
Sun 3/17:00 am
CVG
- ONT
1 stop19h 59m
Frontier
Deal found 2/2![Frontier logo]()
$215
This Expedia deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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.
Thu 2/267:22 pm
ONT
- CVG
1 stop26h 00m
Frontier
Mon 3/27:00 am
CVG
- ONT
1 stop19h 59m
Frontier
Deal found 2/2![Frontier logo]()
$168
This Kiwi.com deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” 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 2/267:22 pm
ONT
- CVG
1 stop26h 00m
Frontier
Fri 3/611:58 am
CVG
- ONT
1 stop15h 01m
Frontier
Deal found 2/3![Frontier logo]()
$195
This CheapOair deal was found by Cheapflights users on 2/1. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/262:08 pm
ONT
- TYS
1 stop24h 58m
Frontier
Mon 3/28:13 pm
TYS
- ONT
1 stop28h 21m
Frontier
Deal found 2/1![Frontier logo]()
$211
This Super.com deal was found by Cheapflights users on 2/1. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/262:06 pm
ONT
- CVG
1 stop7h 53m
Frontier
Fri 2/277:00 am
CVG
- ONT
1 stop19h 59m
Frontier
Deal found 2/1![Frontier logo]()
$226
This Kiwi.com deal was found by Cheapflights users on 2/1. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/276:00 am
ONT
- BNA
1 stop10h 44m
Frontier
Mon 3/26:19 pm
BNA
- ONT
2 stops29h 15m
Frontier
Deal found 2/1![Frontier logo]()
$218
This Kiwi.com deal was found by Cheapflights users on 2/1. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/288:09 pm
ONT
- BNA
1 stop6h 59m
Multiple Airlines
Wed 3/49:25 am
BNA
- ONT
2 stops14h 09m
Multiple Airlines
Deal found 2/1![Multiple Airlines logo]()
$234
This Kiwi.com deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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 3/69:44 pm
ONT
- BNA
1 stop28h 19m
Multiple Airlines
Mon 3/168:41 pm
BNA
- ONT
1 stop18h 47m
Multiple Airlines
Deal found 2/2![Multiple Airlines logo]()
$224
This Kiwi.com deal was found by Cheapflights users on 2/1. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/242:23 pm
ONT
- BNA
2 stops21h 53m
Multiple Airlines
Tue 3/318:41 pm
BNA
- ONT
1 stop21h 16m
Multiple Airlines
Deal found 2/1![Multiple Airlines logo]()
$227
This Kiwi.com deal was found by Cheapflights users on 1/31. Clicking the “Pick Dates” 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 3/287:31 pm
ONT
- BNA
1 stop7h 39m
Multiple Airlines
Thu 4/23:14 pm
BNA
- ONT
1 stop10h 42m
Multiple Airlines
Deal found 1/31![Multiple Airlines logo]()
$226
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 February 3, 2026.
Search for one-way flight options from Ontario to Kentucky. Find affordable one-way fares based on user searches. Data last updated February 3, 2026.
This Trip.com deal was found by Cheapflights users on 2/1. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/47:17 pm
ONT
- BNA
1 stop7h 51m
Multiple Airlines
Deal found 2/1![Multiple Airlines logo]()
$83
This Trip.com deal was found by Cheapflights users on 2/1. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/257:17 pm
ONT
- BNA
1 stop7h 51m
Multiple Airlines
Deal found 2/1![Multiple Airlines logo]()
$84
This Trip.com deal was found by Cheapflights users on 1/31. Clicking the “Pick Dates” 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.
Tue 2/243:22 pm
ONT
- BNA
1 stop11h 46m
Multiple Airlines
Deal found 1/31![Multiple Airlines logo]()
$86
This Trip.com deal was found by Cheapflights users on 1/31. Clicking the “Pick Dates” 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.
Mon 2/236:43 pm
ONT
- BNA
1 stop8h 25m
Multiple Airlines
Deal found 1/31![Multiple Airlines logo]()
$87
This Kiwi.com deal was found by Cheapflights users on 2/1. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/32:06 pm
ONT
- BNA
1 stop13h 02m
Multiple Airlines
Deal found 2/1![Multiple Airlines logo]()
$89
This Mytrip deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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 2/262:08 pm
ONT
- BNA
1 stop26h 36m
Frontier
Deal found 2/2![Frontier logo]()
$90
This Kiwi.com deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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.
Sun 3/110:14 pm
ONT
- BNA
1 stop28h 54m
Multiple Airlines
Deal found 2/2![Multiple Airlines logo]()
$92
This Super.com deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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 2/192:06 pm
ONT
- CVG
1 stop7h 53m
Frontier
Deal found 2/2![Frontier logo]()
$94
This Trip.com deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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.
Mon 3/163:30 pm
ONT
- BNA
1 stop11h 40m
Multiple Airlines
Deal found 2/2![Multiple Airlines logo]()
$94
This Super.com deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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 3/256:15 am
ONT
- BNA
1 stop6h 01m
Frontier
Deal found 2/2![Frontier logo]()
$95
This Kiwi.com deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/14:52 pm
ONT
- BNA
1 stop10h 18m
Multiple Airlines
Deal found 2/3![Multiple Airlines logo]()
$96
This Trip.com deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” 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 2/187:17 pm
ONT
- BNA
1 stop7h 51m
Multiple Airlines
Deal found 2/2![Multiple Airlines logo]()
$97
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 February 3, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $211 (CheapOair) |
One-way from | $83 (Trip.com) |
Popular in | March |
Cheapest in | July |
Average price | $454 |
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 February 3, 2026.
Use the filters below to find and compare flights from Ontario to Kentucky that are best for you.
Fly from
Ontario
Fly to
Kentucky
Route
Depart
Return
Price
OntarioCincinnati
ONT - CVG
ONTCVG
Ontario
Thu 2/26
7:22 pm-12:22 am
1 stop26h 00m
Cincinnati Cinci./N. Kentucky
Mon 3/2
7:00 am-11:59 pm
1 stop19h 59m
$168
OntarioCincinnati
ONT - CVG
ONTCVG
Ontario
Wed 4/15
2:44 pm-3:59 pm
2 stops22h 15m
Cincinnati Cinci./N. Kentucky
Sun 4/19
8:48 pm-8:04 am
1 stop14h 16m
$228
OntarioCincinnati
ONT - CVG
ONTCVG
Ontario
Wed 4/29
2:44 pm-3:59 pm
2 stops22h 15m
Cincinnati Cinci./N. Kentucky
Mon 5/4
8:48 pm-6:34 pm
1 stop24h 46m
$230
OntarioCincinnati
ONT - CVG
ONTCVG
Ontario
Thu 4/23
8:59 pm-6:15 am
1 stop6h 16m
Cincinnati Cinci./N. Kentucky
Sun 4/26
8:48 pm-8:04 pm
1 stop26h 16m
$236
OntarioCincinnati
ONT - CVG
ONTCVG
Ontario
Wed 3/4
6:37 pm-9:48 am
2 stops12h 11m
Cincinnati Cinci./N. Kentucky
Wed 3/11
7:03 am-12:48 pm
2 stops8h 45m
$267
OntarioCincinnati
ONT - CVG
ONTCVG
Ontario
Fri 5/1
7:59 pm-5:58 pm
1 stop18h 59m
Cincinnati Cinci./N. Kentucky
Mon 5/4
7:59 pm-11:55 pm
1 stop6h 56m
$272
OntarioNashville
ONT - BNA
ONTBNA
Ontario
Tue 4/7
1:20 pm-9:38 pm
1 stop6h 18m
Nashville Intl
Tue 4/14
7:20 am-12:14 pm
1 stop6h 54m
$285
OntarioNashville
ONT - BNA
ONTBNA
Ontario
Fri 4/24
1:43 pm-9:46 pm
1 stop6h 03m
Nashville Intl
Tue 5/12
4:28 pm-9:58 pm
1 stop7h 30m
$285
OntarioNashville
ONT - BNA
ONTBNA
Ontario
Wed 4/8
11:59 am-11:52 pm
1 stop9h 53m
Nashville Intl
Wed 4/15
7:20 pm-11:44 pm
1 stop6h 24m
$285
OntarioNashville
ONT - BNA
ONTBNA
Ontario
Tue 4/21
1:34 pm-9:47 pm
1 stop6h 13m
Nashville Intl
Tue 4/28
4:35 pm-9:50 pm
1 stop7h 15m
$285
Showing 1-10 of 60 results
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-EVV
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Ontario to Kentucky
ONT-USKY
ONT-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 $71). Flying from Ontario to Kentucky in March is currently the most expensive (average of $322). 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 February 3, 2026.
Read through reviews of airlines operating flights from Ontario to Kentucky, such as Southwest, Delta, and United 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
Overall
8.0
Comfort
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
Overall
8.0
Comfort
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
Overall
8.0
Comfort
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
Overall
8.0
Comfort
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
Overall
8.0
Comfort
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.
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes for Ontario to Kentucky
See prices for flight routes from nearby airports that may be better suited for you.
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 February 3, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$288 | Average$465 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$288 | Average$420 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$320 | Average$443 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$342 | Average$451 | FlexibilityNo cancel fee | On-time63% |