$82+ Cheap flights from Kentucky to Ontario (ONT)
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 9/16. Fares are subject to change and may not be available on all flights or dates of travel.
SDF — ONT
Sep 23 — Sep 301
Round-trip
1 adult, Economy
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Find cheap flights from Kentucky to Ontario 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 Kentucky to Ontario
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Cheapest flights from Kentucky to OntarioExplore the most affordable flight options available from Kentucky to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 24, 2026.
Explore the most affordable flight options available from Kentucky to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 24, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” 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 9/123:14 pm -
1 stop10h 33m
Mon 9/146:15 am -
1 stop11h 22m
Deal found 8/19![Frontier logo]()
$161
This Travelocity deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/233:14 pm -
1 stop21h 16m
Mon 9/286:15 am -
1 stop6h 03m
Deal found 8/19![Frontier logo]()
$164
This Frontier deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” 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 9/512:55 pm -
1 stop12h 55m
Fri 9/116:15 am -
1 stop11h 22m
Deal found 8/19![Frontier logo]()
$165
This Kiwi.com deal was found by Cheapflights users on 8/24. Clicking the “Pick Dates” 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 9/243:14 pm -
1 stop10h 33m
Mon 9/2811:45 am -
1 stop24h 33m
Deal found 8/24![Frontier logo]()
$167
This Booking.com deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” 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.
Fri 8/212:41 pm -
1 stop8h 46m
Mon 8/2410:49 am -
1 stop23h 21m
Deal found 8/19![Frontier logo]()
$170
This CheapOair deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” 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 8/2712:55 pm -
1 stop12h 55m
Sun 8/306:00 am -
1 stop28h 10m
Deal found 8/19![Frontier logo]()
$174
This Gotogate deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” 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 8/202:41 pm -
1 stop27h 41m
Mon 8/246:00 am -
1 stop28h 10m
Deal found 8/19![Frontier logo]()
$176
This Kiwi.com deal was found by Cheapflights users on 8/23. Clicking the “Pick Dates” 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 9/233:14 pm -
1 stop10h 33m
Fri 10/3011:52 am -
1 stop24h 24m
Deal found 8/23![Frontier logo]()
$177
This Kiwi.com deal was found by Cheapflights users on 8/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/213:14 pm -
1 stop10h 36m
Tue 10/2711:52 am -
1 stop24h 24m
Deal found 8/21![Frontier logo]()
$179
This Kiwi.com deal was found by Cheapflights users on 8/22. Clicking the “Pick Dates” 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 9/118:32 pm -
1 stop15h 58m
Mon 9/146:15 am -
1 stop11h 22m
Deal found 8/22![Frontier logo]()
$182
This Trip.com deal was found by Cheapflights users on 8/21. Clicking the “Pick Dates” 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.
Sat 9/123:14 pm -
1 stop10h 33m
Sat 9/196:15 am -
1 stop6h 03m
Deal found 8/21![Frontier logo]()
$189
This Trip.com deal was found by Cheapflights users on 8/21. Clicking the “Pick Dates” 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 10/13:14 pm -
1 stop10h 33m
Sat 10/316:25 am -
1 stop5h 51m
Deal found 8/21![Frontier logo]()
$190
Best flights from Kentucky to OntarioDiscover carefully curated flight deals from Kentucky to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 24, 2026.
Discover carefully curated flight deals from Kentucky to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 24, 2026.
This Delta deal was found by Cheapflights users on 8/21. Clicking the “Pick Dates” 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 8/277:39 pm -
1 stop5h 55m
Thu 9/31:06 pm -
1 stop7h 44m
Deal found 8/21![Delta logo]()
$263
This Southwest deal was found by Cheapflights users on 8/21. Clicking the “Pick Dates” 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 10/154:05 pm -
Nonstop4h 20m
Wed 10/2111:55 pm -
1 stop8h 05m
Deal found 8/21![Southwest logo]()
$347
This United Airlines deal was found by Cheapflights users on 8/20. Clicking the “Pick Dates” 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 11/711:59 am -
2 stops11h 52m
Thu 11/265:00 am -
1 stop8h 03m
Deal found 8/20![United Airlines logo]()
$368
This American Airlines deal was found by Cheapflights users on 8/21. Clicking the “Pick Dates” 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 10/145:22 pm -
1 stop9h 30m
Sat 10/1710:10 pm -
1 stop9h 29m
Deal found 8/21![American Airlines logo]()
$476
This Kiwi.com deal was found by Cheapflights users on 8/21. Clicking the “Pick Dates” 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.
Mon 10/59:54 pm -
1 stop14h 15m
Sun 10/116:15 am -
2 stops25h 59m
Deal found 8/21![Multiple Airlines logo]()
$487
This Delta deal was found by Cheapflights users on 8/22. Clicking the “Pick Dates” 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 11/55:00 pm -
1 stop7h 11m
Sun 11/811:15 pm -
1 stop8h 34m
Deal found 8/22![Delta logo]()
$263
This Southwest deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” 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 9/154:50 pm -
Nonstop4h 10m
Fri 9/1811:00 am -
1 stop7h 20m
Deal found 8/19![Southwest logo]()
$363
This United Airlines deal was found by Cheapflights users on 8/21. Clicking the “Pick Dates” 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 10/2010:42 am -
2 stops12h 49m
Tue 10/275:00 am -
1 stop7h 00m
Deal found 8/21![United Airlines logo]()
$368
This Delta deal was found by Cheapflights users on 8/20. Clicking the “Pick Dates” 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 11/37:00 am -
1 stop7h 06m
Sat 11/76:00 am -
1 stop6h 15m
Deal found 8/20![Delta logo]()
$357
This Southwest deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” 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 9/154:50 pm -
Nonstop4h 10m
Thu 9/1711:00 am -
1 stop7h 20m
Deal found 8/19![Southwest logo]()
$363
This United Airlines deal was found by Cheapflights users on 8/21. Clicking the “Pick Dates” 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 11/1011:18 am -
2 stops10h 57m
Tue 11/175:00 am -
2 stops13h 15m
Deal found 8/21![United Airlines logo]()
$374
This Delta deal was found by Cheapflights users on 8/23. Clicking the “Pick Dates” 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 9/235:40 am -
1 stop8h 29m
Mon 9/2812:19 pm -
1 stop8h 36m
Deal found 8/23![Delta logo]()
$363
This Southwest deal was found by Cheapflights users on 8/20. Clicking the “Pick Dates” 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 9/215:35 am -
1 stop8h 25m
Wed 9/237:25 am -
Nonstop3h 50m
Deal found 8/20![Southwest logo]()
$372
This Delta deal was found by Cheapflights users on 8/23. Clicking the “Pick Dates” 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 9/117:05 am -
1 stop7h 00m
Tue 9/157:05 am -
1 stop6h 57m
Deal found 8/23![Delta logo]()
$371
This Southwest deal was found by Cheapflights users on 8/21. Clicking the “Pick Dates” 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 10/204:20 pm -
2 stops8h 40m
Tue 10/279:15 am -
2 stops8h 45m
Deal found 8/21![Southwest logo]()
$373
This United Airlines deal was found by Cheapflights users on 8/23. Clicking the “Pick Dates” 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 11/178:00 am -
1 stop7h 33m
Wed 11/185:00 am -
1 stop6h 22m
Deal found 8/23![United Airlines logo]()
$417
This American Airlines deal was found by Cheapflights users on 8/22. Clicking the “Pick Dates” 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 9/175:31 pm -
1 stop9h 05m
Thu 9/2410:25 am -
1 stop9h 24m
Deal found 8/22![American Airlines logo]()
$507
This Delta deal was found by Cheapflights users on 8/22. Clicking the “Pick Dates” 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 9/117:05 am -
1 stop7h 00m
Tue 9/221:04 pm -
1 stop6h 48m
Deal found 8/22![Delta logo]()
$371
This American Airlines deal was found by Cheapflights users on 8/23. Clicking the “Pick Dates” 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 10/155:54 pm -
1 stop7h 58m
Tue 10/202:22 pm -
1 stop7h 00m
Deal found 8/23![American Airlines logo]()
$509
This United Airlines deal was found by Cheapflights users on 8/21. Clicking the “Pick Dates” 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.
Sun 9/67:10 am -
2 stops8h 40m
Wed 9/95:00 am -
2 stops11h 07m
Deal found 8/21![United Airlines logo]()
$421
This Southwest deal was found by Cheapflights users on 8/22. Clicking the “Pick Dates” 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 10/222:25 pm -
1 stop8h 15m
Mon 11/25:00 am -
2 stops8h 55m
Deal found 8/22![Southwest logo]()
$390
This Delta deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” 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 9/196:10 pm -
1 stop6h 54m
Fri 9/2510:00 pm -
1 stop8h 55m
Deal found 8/19![Delta logo]()
$375
This United Airlines deal was found by Cheapflights users on 8/20. Clicking the “Pick Dates” 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 10/174:10 pm -
1 stop9h 39m
Sun 10/255:00 am -
1 stop6h 19m
Deal found 8/20![United Airlines logo]()
$427
This Southwest deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/185:15 am -
2 stops8h 50m
Wed 10/215:40 am -
2 stops7h 55m
Deal found 8/19![Southwest logo]()
$401
This American Airlines deal was found by Cheapflights users on 8/24. Clicking the “Pick Dates” 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 9/85:23 pm -
1 stop8h 36m
Sat 9/1212:37 pm -
1 stop7h 12m
Deal found 8/24![American Airlines logo]()
$541
This Delta deal was found by Cheapflights users on 8/20. Clicking the “Pick Dates” 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 9/97:05 am -
1 stop7h 00m
Sat 9/1212:17 pm -
1 stop6h 42m
Deal found 8/20![Delta logo]()
$376
This United Airlines deal was found by Cheapflights users on 8/20. Clicking the “Pick Dates” 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.
Thu 8/2711:18 am -
2 stops10h 43m
Sun 8/307:13 pm -
2 stops11h 36m
Deal found 8/20![United Airlines logo]()
$431
This Southwest deal was found by Cheapflights users on 8/24. Clicking the “Pick Dates” 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 9/233:00 pm -
1 stop10h 05m
Wed 9/308:30 am -
2 stops7h 30m
Deal found 8/24![Southwest logo]()
$407
This American Airlines deal was found by Cheapflights users on 8/21. Clicking the “Pick Dates” 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 9/65:01 pm -
1 stop7h 58m
Thu 9/1012:37 pm -
1 stop8h 52m
Deal found 8/21![American Airlines logo]()
$550
This Delta deal was found by Cheapflights users on 8/23. Clicking the “Pick Dates” 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 9/127:05 am -
1 stop7h 00m
Fri 9/1810:00 pm -
1 stop9h 19m
Deal found 8/23![Delta logo]()
$379
Last-minute flights from Kentucky to OntarioDiscover last-minute flight deals from Kentucky to Ontario. Data last updated August 24, 2026 and is based on user searches.
Discover last-minute flight deals from Kentucky to Ontario. Data last updated August 24, 2026 and is based on user searches.
This CheapOair deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” 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 8/2712:55 pm -
1 stop12h 55m
Sun 8/306:00 am -
1 stop28h 10m
Deal found 8/19![Frontier logo]()
$174
This Frontier deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” 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 9/512:55 pm -
1 stop12h 55m
Fri 9/116:15 am -
1 stop11h 22m
Deal found 8/19![Frontier logo]()
$165
This Kiwi.com deal was found by Cheapflights users on 8/20. Clicking the “Pick Dates” 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 9/95:16 pm -
1 stop9h 31m
Sat 9/126:15 am -
1 stop6h 56m
Deal found 8/20![Frontier logo]()
$202
This Kiwi.com deal was found by Cheapflights users on 8/22. Clicking the “Pick Dates” 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 9/118:32 pm -
1 stop15h 58m
Mon 9/146:15 am -
1 stop11h 22m
Deal found 8/22![Frontier logo]()
$182
This Kiwi.com deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” 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 9/123:14 pm -
1 stop10h 33m
Mon 9/146:15 am -
1 stop11h 22m
Deal found 8/19![Frontier logo]()
$161
This Trip.com deal was found by Cheapflights users on 8/21. Clicking the “Pick Dates” 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.
Sat 9/123:14 pm -
1 stop10h 33m
Sat 9/196:15 am -
1 stop6h 03m
Deal found 8/21![Frontier logo]()
$189
This Trip.com deal was found by Cheapflights users on 8/22. Clicking the “Pick Dates” 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 9/153:14 pm -
1 stop10h 33m
Sat 9/196:15 am -
1 stop6h 03m
Deal found 8/22![Frontier logo]()
$191
This Frontier deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” 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 9/233:14 pm -
1 stop10h 33m
Mon 9/286:15 am -
1 stop6h 03m
Deal found 8/19![Frontier logo]()
$164
This Kiwi.com deal was found by Cheapflights users on 8/23. Clicking the “Pick Dates” 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 9/233:14 pm -
1 stop10h 33m
Fri 10/3011:52 am -
1 stop24h 24m
Deal found 8/23![Frontier logo]()
$177
This Kiwi.com deal was found by Cheapflights users on 8/23. Clicking the “Pick Dates” 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 9/233:14 pm -
1 stop21h 16m
Wed 9/306:15 am -
1 stop6h 03m
Deal found 8/23![Frontier logo]()
$196
This Kiwi.com deal was found by Cheapflights users on 8/24. Clicking the “Pick Dates” 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 9/243:14 pm -
1 stop10h 33m
Mon 9/2811:45 am -
1 stop24h 33m
Deal found 8/24![Frontier logo]()
$167
This Kiwi.com deal was found by Cheapflights users on 8/24. Clicking the “Pick Dates” 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 9/243:14 pm -
1 stop10h 33m
Sun 9/276:15 am -
1 stop6h 03m
Deal found 8/24![Frontier logo]()
$192
One-way flights from Kentucky to OntarioSearch for one-way flight options from Kentucky to Ontario. Find affordable one-way fares based on user searches. Data last updated August 24, 2026.
Search for one-way flight options from Kentucky to Ontario. Find affordable one-way fares based on user searches. Data last updated August 24, 2026.
This Trip.com deal was found by Cheapflights users on 8/21. Clicking the “Pick Dates” 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 9/163:14 pm -
1 stop10h 33m
Deal found 8/21![Frontier logo]()
$82
This Trip.com deal was found by Cheapflights users on 8/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/283:11 pm -
1 stop10h 40m
Deal found 8/22![Frontier logo]()
$83
This Trip.com deal was found by Cheapflights users on 8/24. Clicking the “Pick Dates” 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 10/63:14 pm -
1 stop10h 33m
Deal found 8/24![Frontier logo]()
$84
This Kiwi.com deal was found by Cheapflights users on 8/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/213:14 pm -
1 stop10h 36m
Deal found 8/24![Frontier logo]()
$85
This Super.com deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” 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 9/218:40 pm -
1 stop15h 50m
Deal found 8/19![Frontier logo]()
$86
This Super.com deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/93:14 pm -
1 stop10h 36m
Deal found 8/19![Frontier logo]()
$87
This Frontier deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” 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 9/112:55 pm -
1 stop12h 55m
Deal found 8/19![Frontier logo]()
$88
This Jetabroad deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Jetabroad is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/269:50 pm -
1 stop20h 20m
Deal found 8/19![Frontier logo]()
$90
This Kiwi.com deal was found by Cheapflights users on 8/21. Clicking the “Pick Dates” 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 9/188:32 pm -
1 stop29h 15m
Deal found 8/21![Frontier logo]()
$91
This CheapOair deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” 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 11/511:32 am -
1 stop25h 11m
Deal found 8/19![Frontier logo]()
$93
This Trip.com deal was found by Cheapflights users on 8/20. Clicking the “Pick Dates” 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 10/193:14 pm -
1 stop10h 36m
Deal found 8/20![Frontier logo]()
$94
This Trip.com deal was found by Cheapflights users on 8/24. Clicking the “Pick Dates” 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.
Sat 9/263:14 pm -
1 stop10h 33m
Deal found 8/24![Frontier logo]()
$98
Find flight deals from Kentucky to Ontario
Keep the following information in mind while searching for Kentucky to Ontario flight deals. Data was last updated August 24, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $161 (Kiwi.com) |
One-way from | $82 (Trip.com) |
Popular in | December |
Cheapest in | September |
Average price | $422 |
Cheapflights Fare Finder
Customize your flight search to find flights from Kentucky to Ontario 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 7,457,451 searches. Data last updated August 24, 2026.
Use the filters below to find and compare flights from Kentucky to Ontario that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
NashvilleOntario
BNA Nashville Intl - ONT Ontario
BNAONT
Nashville Intl
Thu 8/27
7:39 pm-11:34 pm
1 stop5h 55m
Ontario
Thu 9/3
1:06 pm-10:50 pm
1 stop7h 44m
$263
NashvilleOntario
BNA Nashville Intl - ONT Ontario
BNAONT
Nashville Intl
Thu 11/5
5:00 pm-10:11 pm
1 stop7h 11m
Ontario
Sun 11/8
11:15 pm-9:49 am
1 stop8h 34m
$263
NashvilleOntario
BNA Nashville Intl - ONT Ontario
BNAONT
Nashville Intl
Thu 10/15
4:05 pm-6:25 pm
Nonstop4h 20m
Ontario
Wed 10/21
11:55 pm-10:00 am
1 stop8h 05m
$347
CincinnatiOntario
CVG Cincinnati Cinci./N. Kentucky - ONT Ontario
CVGONT
Cincinnati Cinci./N. Kentucky
Tue 11/3
7:00 am-11:06 am
1 stop7h 06m
Ontario
Sat 11/7
6:00 am-3:15 pm
1 stop6h 15m
$357
Quickest round-trip
NashvilleOntario
BNA Nashville Intl - ONT Ontario
BNAONT
Nashville Intl
Tue 9/15
4:50 pm-7:00 pm
Nonstop4h 10m
Ontario
Fri 9/18
11:00 am-8:20 pm
1 stop7h 20m
$363
NashvilleOntario
BNA Nashville Intl - ONT Ontario
BNAONT
Nashville Intl
Tue 9/15
4:50 pm-7:00 pm
Nonstop4h 10m
Ontario
Thu 9/17
11:00 am-8:20 pm
1 stop7h 20m
$363
KnoxvilleOntario
TYS Knoxville McGhee Tyson - ONT Ontario
TYSONT
Knoxville McGhee Tyson
Wed 9/23
5:40 am-11:09 am
1 stop8h 29m
Ontario
Mon 9/28
12:19 pm-11:55 pm
1 stop8h 36m
$363
KnoxvilleOntario
TYS Knoxville McGhee Tyson - ONT Ontario
TYSONT
Knoxville McGhee Tyson
Sat 11/7
11:59 am-8:51 pm
2 stops11h 52m
Ontario
Thu 11/26
5:00 am-4:03 pm
1 stop8h 03m
$368
KnoxvilleOntario
TYS Knoxville McGhee Tyson - ONT Ontario
TYSONT
Knoxville McGhee Tyson
Tue 10/20
10:42 am-8:31 pm
2 stops12h 49m
Ontario
Tue 10/27
5:00 am-3:00 pm
1 stop7h 00m
$368
CincinnatiOntario
CVG Cincinnati Cinci./N. Kentucky - ONT Ontario
CVGONT
Cincinnati Cinci./N. Kentucky
Fri 9/11
7:05 am-11:05 am
1 stop7h 00m
Ontario
Tue 9/15
7:05 am-5:02 pm
1 stop6h 57m
$371
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Kentucky to Ontario
Have a flexible travel schedule? Discover the best time to fly to Ontario from Kentucky with our price prediction graph.
BNA-ONT
CVG-ONT
TYS-ONT
SDF-ONT
TRI-ONT
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 Kentucky to Ontario
USKY-ONT
BNA-ONT
CVG-ONT
TYS-ONT
SDF-ONT
What is the cheapest month to book a flight from Kentucky to Ontario?
Currently, March is the cheapest month in which you can book a flight from Kentucky to Ontario (average of $359). Flying from Kentucky to Ontario in November is currently the most expensive (average of $630). 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 Kentucky to Ontario?
Airfare is below average for this route at the moment.
Kentucky to Ontario flights typically cost between $386 and $604 in January.The cheapest round-trip price found within the last 5 days was $317 on Delta (Jan 5-Jan 11).
Related info for your journey
Find useful and relevant information for your journey from Kentucky to Ontario. 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
Complete your trip
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Ontario flight routes
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Alternative routes for Kentucky to Ontario
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Ontario by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Kentucky to Ontario by cabin class
Find flights from Kentucky to Ontario, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Other flights to Ontario
Explore flights to Ontario departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on August 24, 2026.
Kentucky and Ontario flights
Browse other Kentucky and Ontario flight options. Last updated on August 24, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Kentucky to Ontario flights
Consider these flights traveling from Kentucky to Ontario.
Top 3 airlines flying from Kentucky to Ontario
Discover the top 3 airlines that operate flights from Kentucky to Ontario. 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 7,457,451 searches. Data last updated August 24, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$288 | Average$358 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$324 | Average$425 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$331 | Average$482 | FlexibilityNo cancel fee | On-time63% |