$78+ 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 10/21. Fares are subject to change and may not be available on all flights or dates of travel.
SDF — ONT
Sep 11 — Sep 181
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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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 12, 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 12, 2026.
This Frontier deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/243:14 pm -
1 stop10h 33m
Tue 9/296:15 am -
1 stop6h 03m
Deal found 8/11![Frontier logo]()
$158
This Trip.com deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/113:14 pm -
1 stop10h 33m
Wed 9/166:15 am -
1 stop6h 03m
Deal found 8/11![Frontier logo]()
$164
This Expedia deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/93:14 pm -
1 stop21h 16m
Wed 9/166:15 am -
1 stop6h 03m
Deal found 8/11![Frontier logo]()
$167
This Frontier deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure 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
Sat 9/122:30 pm -
1 stop20h 34m
Deal found 8/11![Frontier logo]()
$168
This CheapOair deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/512:55 pm -
1 stop23h 09m
Thu 9/1011:45 am -
1 stop24h 33m
Deal found 8/11![Frontier logo]()
$177
This CheapOair deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/112:55 pm -
1 stop12h 55m
Thu 9/33:40 pm -
1 stop20h 06m
Deal found 8/11![Frontier logo]()
$186
This Trip.com deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/32:41 pm -
1 stop27h 41m
Sat 9/57:56 pm -
1 stop14h 14m
Deal found 8/11![Frontier logo]()
$192
This Frontier deal was found by Cheapflights users on 8/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/113:14 pm -
1 stop10h 33m
Mon 9/146:15 am -
1 stop11h 22m
Deal found 8/10![Frontier logo]()
$193
This Frontier deal was found by Cheapflights users on 8/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/512:55 pm -
1 stop12h 55m
Fri 9/116:15 am -
1 stop11h 22m
Deal found 8/12![Frontier logo]()
$202
This CheapOair deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/188:32 pm -
1 stop29h 15m
Mon 9/216:15 am -
1 stop11h 40m
Deal found 8/11![Frontier logo]()
$203
This Frontier deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/277:42 pm -
1 stop6h 13m
Tue 11/36:15 am -
1 stop10h 32m
Deal found 8/11![Frontier logo]()
$211
This Frontier deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/195:16 pm -
1 stop9h 31m
Wed 9/236:15 am -
1 stop6h 56m
Deal found 8/11![Frontier logo]()
$218
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 12, 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 12, 2026.
This Southwest deal was found by Cheapflights users on 8/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/114:00 pm -
1 stop7h 40m
Tue 11/175:45 am -
2 stops8h 10m
Deal found 8/10![Southwest logo]()
$264
This Frontier deal was found by Cheapflights users on 8/7. Clicking the “Pick Dates” 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 8/298:30 pm -
1 stop6h 20m
Mon 8/316:00 am -
1 stop10h 25m
Deal found 8/7![Frontier logo]()
$274
This United Airlines deal was found by Cheapflights users on 8/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/53:25 pm -
1 stop8h 28m
Fri 9/115:00 am -
1 stop6h 29m
Deal found 8/10![United Airlines logo]()
$289
This Delta deal was found by Cheapflights users on 8/7. Clicking the “Pick Dates” 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 12/123:38 pm -
1 stop7h 03m
Wed 1/67:00 am -
1 stop7h 10m
Deal found 8/7![Delta logo]()
$341
This American Airlines deal was found by Cheapflights users on 8/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/108:48 am -
2 stops11h 25m
Wed 9/168:25 am -
1 stop7h 01m
Deal found 8/12![American Airlines logo]()
$524
This Alaska Airlines deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/1810:30 am -
2 stops11h 33m
Mon 9/217:59 pm -
2 stops11h 49m
Deal found 8/11![Alaska Airlines logo]()
$553
This Southwest deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/912:10 pm -
2 stops8h 25m
Mon 9/212:40 pm -
1 stop5h 30m
Deal found 8/11![Southwest logo]()
$322
This Delta deal was found by Cheapflights users on 8/7. Clicking the “Pick Dates” 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 12/115:59 pm -
1 stop7h 00m
Fri 1/87:00 am -
1 stop7h 10m
Deal found 8/7![Delta logo]()
$359
This United Airlines deal was found by Cheapflights users on 8/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/63:20 pm -
1 stop8h 00m
Thu 1/76:53 pm -
2 stops11h 52m
Deal found 8/10![United Airlines logo]()
$393
This Southwest deal was found by Cheapflights users on 8/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/254:15 pm -
2 stops7h 45m
Fri 1/89:00 am -
2 stops8h 30m
Deal found 8/12![Southwest logo]()
$384
This Delta deal was found by Cheapflights users on 8/7. Clicking the “Pick Dates” 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 9/114:30 pm -
1 stop6h 35m
Sun 9/1310:00 pm -
1 stop8h 22m
Deal found 8/7![Delta logo]()
$389
This United Airlines deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/312:29 pm -
2 stops10h 32m
Sat 9/51:18 pm -
1 stop6h 12m
Deal found 8/11![United Airlines logo]()
$394
This Southwest deal was found by Cheapflights users on 8/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/111:25 pm -
Nonstop4h 05m
Tue 9/1512:30 pm -
1 stop6h 00m
Deal found 8/8![Southwest logo]()
$387
This Delta deal was found by Cheapflights users on 8/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/51:06 pm -
1 stop8h 24m
Mon 9/710:00 pm -
1 stop9h 07m
Deal found 8/9![Delta logo]()
$389
This United Airlines deal was found by Cheapflights users on 8/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/234:53 pm -
1 stop7h 05m
Sat 10/315:00 am -
1 stop8h 04m
Deal found 8/12![United Airlines logo]()
$419
This Southwest deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/25:10 am -
1 stop6h 15m
Sun 10/46:00 am -
Nonstop3h 50m
Deal found 8/11![Southwest logo]()
$388
This Delta deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/51:45 pm -
1 stop7h 45m
Mon 9/710:00 pm -
1 stop8h 33m
Deal found 8/11![Delta logo]()
$394
This United Airlines deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/263:36 pm -
1 stop8h 22m
Wed 9/301:24 pm -
1 stop6h 08m
Deal found 8/11![United Airlines logo]()
$423
This American Airlines deal was found by Cheapflights users on 8/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/107:31 am -
2 stops13h 42m
Sun 9/1312:37 pm -
1 stop7h 12m
Deal found 8/8![American Airlines logo]()
$580
This Delta deal was found by Cheapflights users on 8/7. Clicking the “Pick Dates” 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 9/312:30 pm -
1 stop8h 00m
Tue 9/81:04 pm -
1 stop8h 07m
Deal found 8/7![Delta logo]()
$402
This Alaska Airlines deal was found by Cheapflights users on 8/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/75:30 am -
2 stops10h 46m
Sun 10/116:56 pm -
2 stops11h 29m
Deal found 8/7![Alaska Airlines logo]()
$607
This Southwest deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/227:00 am -
2 stops8h 30m
Sat 9/267:05 am -
2 stops7h 40m
Deal found 8/11![Southwest logo]()
$417
This United Airlines deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/296:45 am -
2 stops8h 48m
Sat 10/311:29 pm -
1 stop6h 00m
Deal found 8/11![United Airlines logo]()
$424
This American Airlines deal was found by Cheapflights users on 8/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/224:52 pm -
1 stop9h 05m
Sat 1/26:12 am -
1 stop8h 10m
Deal found 8/12![American Airlines logo]()
$595
This Delta deal was found by Cheapflights users on 8/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/215:19 pm -
1 stop6h 49m
Wed 11/256:00 am -
1 stop6h 17m
Deal found 8/8![Delta logo]()
$411
This United Airlines deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/23:45 pm -
1 stop8h 55m
Mon 11/95:00 am -
1 stop6h 22m
Deal found 8/11![United Airlines logo]()
$435
This Alaska Airlines deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/1810:30 am -
2 stops11h 33m
Sat 9/266:02 am -
2 stops14h 50m
Deal found 8/11![Alaska Airlines logo]()
$643
This Delta deal was found by Cheapflights users on 8/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/156:25 am -
1 stop7h 02m
Wed 1/207:00 am -
1 stop6h 18m
Deal found 8/9![Delta logo]()
$411
This Southwest deal was found by Cheapflights users on 8/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/243:20 pm -
2 stops8h 05m
Sun 9/2711:55 pm -
1 stop7h 30m
Deal found 8/9![Southwest logo]()
$472
This Alaska Airlines deal was found by Cheapflights users on 8/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/1511:58 am -
2 stops14h 44m
Sat 10/176:02 am -
2 stops14h 11m
Deal found 8/10![Alaska Airlines logo]()
$643
Last-minute flights from Kentucky to OntarioDiscover last-minute flight deals from Kentucky to Ontario. Data last updated August 12, 2026 and is based on user searches.
Discover last-minute flight deals from Kentucky to Ontario. Data last updated August 12, 2026 and is based on user searches.
This CheapOair deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/112:55 pm -
1 stop12h 55m
Thu 9/33:40 pm -
1 stop20h 06m
Deal found 8/11![Frontier logo]()
$186
This Trip.com deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/32:41 pm -
1 stop27h 41m
Sat 9/57:56 pm -
1 stop14h 14m
Deal found 8/11![Frontier logo]()
$192
This Frontier deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure 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
Sat 9/122:30 pm -
1 stop20h 34m
Deal found 8/11![Frontier logo]()
$168
This CheapOair deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/512:55 pm -
1 stop23h 09m
Thu 9/1011:45 am -
1 stop24h 33m
Deal found 8/11![Frontier logo]()
$177
This Frontier deal was found by Cheapflights users on 8/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/512:55 pm -
1 stop12h 55m
Fri 9/116:15 am -
1 stop11h 22m
Deal found 8/12![Frontier logo]()
$202
This Expedia deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/93:14 pm -
1 stop21h 16m
Wed 9/166:15 am -
1 stop6h 03m
Deal found 8/11![Frontier logo]()
$167
This Trip.com deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/113:14 pm -
1 stop10h 33m
Wed 9/166:15 am -
1 stop6h 03m
Deal found 8/11![Frontier logo]()
$164
This Frontier deal was found by Cheapflights users on 8/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/113:14 pm -
1 stop10h 33m
Mon 9/146:15 am -
1 stop11h 22m
Deal found 8/10![Frontier logo]()
$193
This Trip.com deal was found by Cheapflights users on 8/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/113:14 pm -
1 stop10h 33m
Tue 9/156:15 am -
1 stop6h 03m
Deal found 8/8![Frontier logo]()
$218
This CheapOair deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/188:32 pm -
1 stop29h 15m
Mon 9/216:15 am -
1 stop11h 40m
Deal found 8/11![Frontier logo]()
$203
This Frontier deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/195:16 pm -
1 stop9h 31m
Wed 9/236:15 am -
1 stop6h 56m
Deal found 8/11![Frontier logo]()
$218
This Frontier deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/243:14 pm -
1 stop10h 33m
Tue 9/296:15 am -
1 stop6h 03m
Deal found 8/11![Frontier logo]()
$158
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 12, 2026.
Search for one-way flight options from Kentucky to Ontario. Find affordable one-way fares based on user searches. Data last updated August 12, 2026.
This Super.com deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/217:42 pm -
1 stop6h 13m
Deal found 8/11![Frontier logo]()
$78
This Frontier deal was found by Cheapflights users on 8/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/147:42 pm -
1 stop6h 13m
Deal found 8/12![Frontier logo]()
$79
This Trip.com deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/3011:32 am -
1 stop14h 23m
Deal found 8/11![Frontier logo]()
$81
This Trip.com deal was found by Cheapflights users on 8/7. Clicking the “Pick Dates” 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 9/512:55 pm -
1 stop12h 55m
Deal found 8/7![Frontier logo]()
$83
This Super.com deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/283:14 pm -
1 stop21h 16m
Deal found 8/11![Frontier logo]()
$84
This CheapOair deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/127:42 pm -
1 stop17h 01m
Deal found 8/11![Frontier logo]()
$87
This Frontier deal was found by Cheapflights users on 8/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/93:14 pm -
1 stop10h 33m
Deal found 8/12![Frontier logo]()
$94
This Kiwi.com deal was found by Cheapflights users on 8/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/113:14 pm -
1 stop10h 33m
Deal found 8/10![Frontier logo]()
$96
This Frontier deal was found by Cheapflights users on 8/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/2611:09 am -
1 stop8h 37m
Deal found 8/10![Frontier logo]()
$109
This Frontier deal was found by Cheapflights users on 8/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/92:52 pm -
1 stop7h 07m
Deal found 8/12![Frontier logo]()
$114
This Frontier deal was found by Cheapflights users on 8/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/95:16 pm -
1 stop9h 31m
Deal found 8/10![Frontier logo]()
$115
This Kiwi.com deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/107:00 am -
1 stop30h 30m
Deal found 8/11![Multiple Airlines logo]()
$117
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 12, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $158 (Frontier) |
One-way from | $78 (Super.com) |
Popular in | December |
Cheapest in | October |
Average price | $408 |
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 2,558,603 searches. Data last updated August 12, 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
Wed 11/11
4:00 pm-9:40 pm
1 stop7h 40m
Ontario
Tue 11/17
5:45 am-3:55 pm
2 stops8h 10m
$264
CincinnatiOntario
CVG Cincinnati Cinci./N. Kentucky - ONT Ontario
CVGONT
Cincinnati Cinci./N. Kentucky
Sat 8/29
8:30 pm-11:50 pm
1 stop6h 20m
Ontario
Mon 8/31
6:00 am-7:25 pm
1 stop10h 25m
$274
LouisvilleOntario
SDF Louisville Intl - ONT Ontario
SDFONT
Louisville Intl
Sat 9/5
3:25 pm-8:53 pm
1 stop8h 28m
Ontario
Fri 9/11
5:00 am-2:29 pm
1 stop6h 29m
$289
LouisvilleOntario
SDF Louisville Intl - ONT Ontario
SDFONT
Louisville Intl
Wed 9/9
12:10 pm-5:35 pm
2 stops8h 25m
Ontario
Mon 9/21
2:40 pm-11:10 pm
1 stop5h 30m
$322
LexingtonOntario
LEX Lexington Blue Grass - ONT Ontario
LEXONT
Lexington Blue Grass
Sat 12/12
3:38 pm-7:41 pm
1 stop7h 03m
Ontario
Wed 1/6
7:00 am-5:10 pm
1 stop7h 10m
$341
LexingtonOntario
LEX Lexington Blue Grass - ONT Ontario
LEXONT
Lexington Blue Grass
Fri 12/11
5:59 pm-9:59 pm
1 stop7h 00m
Ontario
Fri 1/8
7:00 am-5:10 pm
1 stop7h 10m
$359
NashvilleOntario
BNA Nashville Intl - ONT Ontario
BNAONT
Nashville Intl
Fri 12/25
4:15 pm-10:00 pm
2 stops7h 45m
Ontario
Fri 1/8
9:00 am-7:30 pm
2 stops8h 30m
$384
Quickest round-trip
NashvilleOntario
BNA Nashville Intl - ONT Ontario
BNAONT
Nashville Intl
Fri 9/11
1:25 pm-3:30 pm
Nonstop4h 05m
Ontario
Tue 9/15
12:30 pm-8:30 pm
1 stop6h 00m
$387
NashvilleOntario
BNA Nashville Intl - ONT Ontario
BNAONT
Nashville Intl
Fri 10/2
5:10 am-9:25 am
1 stop6h 15m
Ontario
Sun 10/4
6:00 am-11:50 am
Nonstop3h 50m
$388
LexingtonOntario
LEX Lexington Blue Grass - ONT Ontario
LEXONT
Lexington Blue Grass
Fri 9/11
4:30 pm-8:05 pm
1 stop6h 35m
Ontario
Sun 9/13
10:00 pm-9:22 am
1 stop8h 22m
$389
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
SDF-ONT
EVV-ONT
TYS-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
SDF-ONT
EVV-ONT
What is the cheapest month to book a flight from Kentucky to Ontario?
Currently, October is the cheapest month in which you can book a flight from Kentucky to Ontario (average of $358). 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 $447 and $507 in September.The cheapest round-trip price found within the last 5 days was $254 on Southwest (Sep 11-Sep 15).
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
Flights by cabin class
Ontario flight routes
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Popular flights
Top destinations
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 12, 2026.
Kentucky and Ontario flights
Browse other Kentucky and Ontario flight options. Last updated on August 12, 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 2,558,603 searches. Data last updated August 12, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$268 | Average$430 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$288 | Average$358 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$331 | Average$486 | FlexibilityNo cancel fee | On-time63% |