$99+ Cheap flights to Ontario
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 9/10. Fares are subject to change and may not be available on all flights or dates of travel.
— ONT
Sep 4 — Sep 111
Round-trip
1 adult, Economy
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Cheapest flights to OntarioExplore the most affordable flight options available to Ontario. Find the lowest fares based on data from user searches, with prices last updated on August 5, 2026.
Explore the most affordable flight options available to Ontario. Find the lowest fares based on data from user searches, with prices last updated on August 5, 2026.
This Frontier deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/101:30 pm -
1 stop8h 09m
Mon 9/148:11 pm -
1 stop13h 24m
Deal found 8/1![Frontier logo]()
$198
This HOPEGOO deal was found by Cheapflights users on 8/3. 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 HOPEGOO is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/101:30 pm -
1 stop8h 09m
Mon 9/287:46 pm -
1 stop13h 49m
Deal found 8/3![Frontier logo]()
$208
This FlightHub deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/241:30 pm -
1 stop8h 09m
Mon 9/287:46 pm -
1 stop13h 49m
Deal found 8/4![Frontier logo]()
$217
This Trip.com deal was found by Cheapflights users on 7/31. 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.
Fri 9/111:30 pm -
1 stop8h 09m
Mon 9/148:11 pm -
1 stop13h 24m
Deal found 7/31![Frontier logo]()
$228
This Frontier deal was found by Cheapflights users on 8/3. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/241:30 pm -
1 stop8h 09m
Sun 9/277:46 pm -
1 stop13h 49m
Deal found 8/3![Frontier logo]()
$261
This Frontier deal was found by Cheapflights users on 7/31. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/241:30 pm -
1 stop8h 09m
Mon 10/57:46 pm -
1 stop13h 49m
Deal found 7/31![Frontier logo]()
$263
This Frontier deal was found by Cheapflights users on 8/3. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/11:30 pm -
1 stop8h 09m
Mon 10/57:46 pm -
1 stop13h 49m
Deal found 8/3![Frontier logo]()
$265
This Frontier deal was found by Cheapflights users on 8/5. Clicking the “Pick Dates” 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 10/11:30 pm -
1 stop8h 09m
Sun 10/47:46 pm -
1 stop13h 49m
Deal found 8/5![Frontier logo]()
$266
This FlightHub deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/241:30 pm -
1 stop8h 09m
Sun 10/47:46 pm -
1 stop13h 49m
Deal found 8/4![Frontier logo]()
$270
This HOPEGOO deal was found by Cheapflights users on 8/1. 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 HOPEGOO is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/110:55 pm -
1 stop12h 41m
Tue 9/89:37 am -
1 stop9h 23m
Deal found 8/1![Frontier logo]()
$281
This FlightHub deal was found by Cheapflights users on 8/2. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/210:55 pm -
1 stop12h 43m
Sun 9/68:17 am -
1 stop10h 43m
Deal found 8/2![Frontier logo]()
$283
This American Airlines deal was found by Cheapflights users on 8/3. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/58:15 am -
1 stop8h 38m
Sat 9/121:05 pm -
1 stop7h 53m
Deal found 8/3![American Airlines logo]()
$287
Best flights to OntarioDiscover carefully curated flight deals to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 5, 2026.
Discover carefully curated flight deals to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 5, 2026.
This United Airlines deal was found by Cheapflights users on 8/3. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/54:16 pm -
1 stop9h 19m
Sat 9/127:00 am -
1 stop7h 25m
Deal found 8/3![United Airlines logo]()
$287
This Delta deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” 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 9/126:00 am -
1 stop8h 05m
Sat 9/1912:17 pm -
1 stop8h 23m
Deal found 8/4![Delta logo]()
$302
This Southwest deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” 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 9/81:30 pm -
1 stop11h 35m
Tue 9/158:35 am -
2 stops8h 40m
Deal found 8/4![Southwest logo]()
$353
This JetBlue deal was found by Cheapflights users on 8/3. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/37:30 pm -
Nonstop6h 08m
Sat 9/1210:39 pm -
Nonstop5h 21m
Deal found 8/3![JetBlue logo]()
$359
This Alaska Airlines deal was found by Cheapflights users on 7/31. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1810:00 am -
1 stop9h 58m
Thu 11/195:52 pm -
1 stop10h 33m
Deal found 7/31![Alaska Airlines logo]()
$437
This Delta deal was found by Cheapflights users on 8/2. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/316:00 am -
1 stop8h 06m
Sat 11/712:18 pm -
1 stop9h 41m
Deal found 8/2![Delta logo]()
$320
This United Airlines deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” 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 8/275:25 pm -
1 stop8h 10m
Sun 8/307:13 pm -
2 stops11h 00m
Deal found 8/4![United Airlines logo]()
$335
This JetBlue deal was found by Cheapflights users on 7/31. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/295:59 pm -
Nonstop5h 58m
Fri 10/210:39 pm -
Nonstop5h 21m
Deal found 7/31![JetBlue logo]()
$367
This Delta deal was found by Cheapflights users on 8/2. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/1212:59 pm -
1 stop9h 54m
Sun 8/1610:00 pm -
1 stop7h 10m
Deal found 8/2![Delta logo]()
$342
This JetBlue deal was found by Cheapflights users on 8/2. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/257:29 pm -
Nonstop6h 08m
Sun 8/3011:59 pm -
Nonstop5h 21m
Deal found 8/2![JetBlue logo]()
$372
This Delta deal was found by Cheapflights users on 8/1. 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.
Thu 10/16:00 am -
1 stop8h 09m
Sun 10/410:00 pm -
1 stop7h 07m
Deal found 8/1![Delta logo]()
$372
This United Airlines deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” 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 9/103:39 pm -
1 stop9h 20m
Sun 9/136:00 am -
1 stop10h 02m
Deal found 8/4![United Airlines logo]()
$412
This Alaska Airlines deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” 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 9/177:20 am -
1 stop9h 56m
Wed 9/2310:47 am -
1 stop9h 42m
Deal found 8/4![Alaska Airlines logo]()
$454
This Delta deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” 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 9/126:00 am -
1 stop8h 05m
Sat 9/1912:17 pm -
1 stop9h 42m
Deal found 8/4![Delta logo]()
$373
This Alaska Airlines deal was found by Cheapflights users on 8/2. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/147:17 am -
1 stop10h 58m
Thu 11/195:52 pm -
1 stop9h 06m
Deal found 8/2![Alaska Airlines logo]()
$454
This United Airlines deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/183:29 pm -
1 stop10h 06m
Tue 8/257:00 am -
1 stop8h 25m
Deal found 8/4![United Airlines logo]()
$417
This JetBlue deal was found by Cheapflights users on 8/1. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/287:30 pm -
Nonstop6h 08m
Sat 8/2911:13 pm -
Nonstop5h 20m
Deal found 8/1![JetBlue logo]()
$447
This Delta deal was found by Cheapflights users on 8/2. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/294:29 pm -
1 stop8h 54m
Sat 9/51:06 pm -
1 stop7h 38m
Deal found 8/2![Delta logo]()
$379
This Alaska Airlines deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” 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.
Sun 10/259:03 am -
1 stop11h 57m
Tue 11/36:00 am -
1 stop9h 56m
Deal found 8/4![Alaska Airlines logo]()
$464
This United Airlines deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/237:29 am -
1 stop8h 21m
Tue 9/295:00 am -
1 stop9h 14m
Deal found 8/4![United Airlines logo]()
$437
This JetBlue deal was found by Cheapflights users on 8/3. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/207:30 pm -
Nonstop6h 08m
Sun 8/2311:59 pm -
Nonstop5h 21m
Deal found 8/3![JetBlue logo]()
$462
This Alaska Airlines deal was found by Cheapflights users on 8/2. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/294:46 pm -
1 stop20h 05m
Sat 9/54:32 pm -
2 stops10h 29m
Deal found 8/2![Alaska Airlines logo]()
$466
This Delta deal was found by Cheapflights users on 7/31. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/144:00 pm -
1 stop8h 52m
Sun 8/1610:00 pm -
1 stop7h 10m
Deal found 7/31![Delta logo]()
$393
This Alaska Airlines deal was found by Cheapflights users on 8/2. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/165:41 pm -
1 stop9h 18m
Sat 1/236:00 am -
1 stop9h 56m
Deal found 8/2![Alaska Airlines logo]()
$474
This United Airlines deal was found by Cheapflights users on 8/3. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/510:45 am -
1 stop10h 27m
Sat 9/127:00 am -
1 stop9h 25m
Deal found 8/3![United Airlines logo]()
$489
This JetBlue deal was found by Cheapflights users on 8/2. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/307:40 pm -
Nonstop6h 04m
Wed 9/211:59 pm -
Nonstop5h 21m
Deal found 8/2![JetBlue logo]()
$497
This Delta deal was found by Cheapflights users on 8/3. 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.
Thu 8/1311:59 am -
1 stop9h 31m
Mon 8/317:05 am -
1 stop7h 45m
Deal found 8/3![Delta logo]()
$413
This United Airlines deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” 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 1/128:00 am -
1 stop7h 33m
Thu 1/215:00 am -
1 stop7h 18m
Deal found 8/4![United Airlines logo]()
$489
This Alaska Airlines deal was found by Cheapflights users on 8/3. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/107:03 am -
2 stops13h 02m
Mon 10/127:25 am -
1 stop13h 00m
Deal found 8/3![Alaska Airlines logo]()
$492
This JetBlue deal was found by Cheapflights users on 8/1. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/177:30 pm -
Nonstop6h 08m
Mon 8/2411:59 pm -
Nonstop5h 21m
Deal found 8/1![JetBlue logo]()
$520
Last-minute flights to OntarioDiscover last-minute flight deals to Ontario. Data last updated August 5, 2026 and is based on user searches.
Discover last-minute flight deals to Ontario. Data last updated August 5, 2026 and is based on user searches.
This HOPEGOO deal was found by Cheapflights users on 8/1. 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 HOPEGOO is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/110:55 pm -
1 stop12h 41m
Tue 9/89:37 am -
1 stop9h 23m
Deal found 8/1![Frontier logo]()
$281
This FlightHub deal was found by Cheapflights users on 8/2. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/210:55 pm -
1 stop12h 43m
Sun 9/68:17 am -
1 stop10h 43m
Deal found 8/2![Frontier logo]()
$283
This United Airlines deal was found by Cheapflights users on 8/3. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/54:16 pm -
1 stop9h 19m
Sat 9/127:00 am -
1 stop7h 25m
Deal found 8/3![United Airlines logo]()
$287
This Frontier deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/101:30 pm -
1 stop8h 09m
Mon 9/148:11 pm -
1 stop13h 24m
Deal found 8/1![Frontier logo]()
$198
This HOPEGOO deal was found by Cheapflights users on 8/3. 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 HOPEGOO is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/101:30 pm -
1 stop8h 09m
Mon 9/287:46 pm -
1 stop13h 49m
Deal found 8/3![Frontier logo]()
$208
This Trip.com deal was found by Cheapflights users on 7/31. 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.
Fri 9/111:30 pm -
1 stop8h 09m
Mon 9/148:11 pm -
1 stop13h 24m
Deal found 7/31![Frontier logo]()
$228
This HOPEGOO deal was found by Cheapflights users on 8/1. 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 HOPEGOO is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/111:30 pm -
1 stop8h 09m
Sun 9/277:46 pm -
1 stop13h 49m
Deal found 8/1![Frontier logo]()
$274
This FlightHub deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/241:30 pm -
1 stop8h 09m
Mon 9/287:46 pm -
1 stop13h 49m
Deal found 8/4![Frontier logo]()
$217
This Frontier deal was found by Cheapflights users on 8/3. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/241:30 pm -
1 stop8h 09m
Sun 9/277:46 pm -
1 stop13h 49m
Deal found 8/3![Frontier logo]()
$261
This Frontier deal was found by Cheapflights users on 7/31. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/241:30 pm -
1 stop8h 09m
Mon 10/57:46 pm -
1 stop13h 49m
Deal found 7/31![Frontier logo]()
$263
This FlightHub deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/241:30 pm -
1 stop8h 09m
Sun 10/47:46 pm -
1 stop13h 49m
Deal found 8/4![Frontier logo]()
$270
This Frontier deal was found by Cheapflights users on 8/5. Clicking the “Pick Dates” 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 9/251:30 pm -
1 stop8h 09m
Mon 9/287:46 pm -
1 stop13h 49m
Deal found 8/5![Frontier logo]()
$266
One-way flights to OntarioSearch for one-way flight options to Ontario. Find affordable one-way fares based on user searches. Data last updated August 5, 2026.
Search for one-way flight options to Ontario. Find affordable one-way fares based on user searches. Data last updated August 5, 2026.
This Booking.com deal was found by Cheapflights users on 7/31. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/101:30 pm -
1 stop8h 09m
Deal found 7/31![Frontier logo]()
$99
This Super.com deal was found by Cheapflights users on 8/5. Clicking the “Pick Dates” 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 9/111:30 pm -
1 stop8h 09m
Deal found 8/5![Frontier logo]()
$103
This Mytrip deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/281:30 pm -
1 stop8h 09m
Deal found 8/4![Frontier logo]()
$104
This HOPEGOO deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure HOPEGOO is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/241:30 pm -
1 stop8h 09m
Deal found 8/4![Frontier logo]()
$105
This Kiwi.com deal was found by Cheapflights users on 8/3. 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.
Tue 9/221:30 pm -
1 stop31h 46m
Deal found 8/3![Frontier logo]()
$146
This Delta deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/196:00 am -
1 stop7h 42m
Deal found 8/4![Delta logo]()
$154
This Delta deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/196:00 am -
1 stop7h 42m
Deal found 8/4![Delta logo]()
$154
This American Airlines deal was found by Cheapflights users on 8/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/196:56 am -
1 stop7h 47m
Deal found 8/5![American Airlines logo]()
$155
This American Airlines deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/247:00 am -
1 stop7h 53m
Deal found 8/4![American Airlines logo]()
$155
This American Airlines deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/296:35 am -
2 stops10h 18m
Deal found 8/4![American Airlines logo]()
$159
This United Airlines deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” 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 8/1911:20 am -
2 stops11h 41m
Deal found 8/4![United Airlines logo]()
$159
This Kiwi.com deal was found by Cheapflights users on 7/31. 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.
Tue 11/31:30 pm -
2 stops27h 10m
Deal found 7/31![Frontier logo]()
$159
Find flight deals to Ontario
Find the latest flights to Ontario in 2026, with up-to-date prices and availability. In the last 7 days, Cheapflights users made a total of 2,558,603 searches and data was last updated on August 5, 2026.
Popular in | June |
|---|---|
Cheapest in | January |
Average price | $374 |
Round-trip from | $321 |
One-way from | $99 |
Good round-trip deal | $367 or less |
Good one-way deal | $240 or less |
Cheapflights Fare Finder
Locate flights to Ontario that fit your budget, with regularly updated fares and availability. In the last 7 days, Cheapflights users made a total of 2,558,603 searches and data was last updated on August 5, 2026.
Use the filters below to find and compare flights to Ontario that are best for you.
Fly from
Route
Depart
Return
Cheapest round-trip
New YorkOntario
LGA New York LaGuardia - ONT Ontario
LGAONT
New York LaGuardia
Sat 9/5
4:16 pm-10:35 pm
1 stop9h 19m
Ontario
Sat 9/12
7:00 am-5:25 pm
1 stop7h 25m
$287
New YorkOntario
LGA New York LaGuardia - ONT Ontario
LGAONT
New York LaGuardia
Sat 9/12
6:00 am-11:05 am
1 stop8h 05m
Ontario
Sat 9/19
12:17 pm-11:40 pm
1 stop8h 23m
$302
New YorkOntario
JFK New York John F Kennedy Intl - ONT Ontario
JFKONT
New York John F Kennedy Intl
Sat 10/31
6:00 am-11:06 am
1 stop8h 06m
Ontario
Sat 11/7
12:18 pm-12:59 am
1 stop9h 41m
$320
New YorkOntario
LGA New York LaGuardia - ONT Ontario
LGAONT
New York LaGuardia
Thu 8/27
5:25 pm-10:35 pm
1 stop8h 10m
Ontario
Sun 8/30
7:13 pm-9:13 am
2 stops11h 00m
$335
New YorkOntario
LGA New York LaGuardia - ONT Ontario
LGAONT
New York LaGuardia
Wed 8/12
12:59 pm-7:53 pm
1 stop9h 54m
Ontario
Sun 8/16
10:00 pm-8:10 am
1 stop7h 10m
$342
New YorkOntario
LGA New York LaGuardia - ONT Ontario
LGAONT
New York LaGuardia
Tue 9/8
1:30 pm-10:05 pm
1 stop11h 35m
Ontario
Tue 9/15
8:35 am-8:15 pm
2 stops8h 40m
$353
New YorkOntario
JFK New York John F Kennedy Intl - ONT Ontario
JFKONT
New York John F Kennedy Intl
Thu 9/3
7:30 pm-10:38 pm
Nonstop6h 08m
Ontario
Sat 9/12
10:39 pm-7:00 am
Nonstop5h 21m
$359
Quickest round-trip
New YorkOntario
JFK New York John F Kennedy Intl - ONT Ontario
JFKONT
New York John F Kennedy Intl
Tue 9/29
5:59 pm-8:57 pm
Nonstop5h 58m
Ontario
Fri 10/2
10:39 pm-7:00 am
Nonstop5h 21m
$367
New YorkOntario
JFK New York John F Kennedy Intl - ONT Ontario
JFKONT
New York John F Kennedy Intl
Tue 8/25
7:29 pm-10:37 pm
Nonstop6h 08m
Ontario
Sun 8/30
11:59 pm-8:20 am
Nonstop5h 21m
$372
New YorkOntario
LGA New York LaGuardia - ONT Ontario
LGAONT
New York LaGuardia
Thu 10/1
6:00 am-11:09 am
1 stop8h 09m
Ontario
Sun 10/4
10:00 pm-8:07 am
1 stop7h 07m
$372
Showing 1-10 of 60 resultsSorted by cheapest first
Compare providers for flights to Ontario
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals to Ontario in August.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star | |
| Price Accuracy2 stars | Trust Score*1 star | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*3 stars |
- Most accurate provider: Out of all of the providers offering Ontario flight deals, Cheapflights users have found FlightHub to have the most accurate pricing on Cheapflights vs. their site about >95% of the time, users can find the same price on Ontario flight deals on Cheapflights and FlightHub. This is based on searches made for Ontario flights over the past month.
- Most trusted provider: FlightHub is the most trusted provider by Cheapflights users offering Ontario flight deals. With a user feedback rating of 3 out of 3 stars (3 being the best), FlightHub has received the most positive sentiment from Cheapflights users searching for flights to Ontario. This is based on data collected from Cheapflights searches made over the past month.
Best time to book a flight to Ontario
Have a flexible travel schedule? Discover the best time to fly to Ontario with our price prediction graph.
NYC-ONT
LGA-ONT
JFK-ONT
SWF-ONT
EWR-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 to Ontario
NYC-ONT
LGA-ONT
JFK-ONT
SWF-ONT
EWR-ONT
How long is the flight to Ontario?
On average, a flight from New York to Ontario takes 9 hours 10 minutes. Flights to Ontario from other popular cities in USA will vary in length. Below are a few examples of popular routes and their flight times.
What are the most popular airlines that fly to Ontario?
The most popular airlines flying from New York to Ontario are American Airlines, JetBlue and United Airlines.
What are the cheapest airlines that fly to Ontario?
The cheapest airlines flying from New York to Ontario are Frontier, Delta and Southwest.
Rainfall in Ontario by month
Plan your trip to Ontario by taking into account the average rainfall totals by month.
In terms of precipitation, rainfall in Ontario ranges from 0.1 - 3.4 inches per month. February is typically the wettest month, when rainfall can reach 3.4 in. June is typically the driest time to visit Ontario when rainfall is around 0.1 in.
Temperature in Ontario by month
Plan your trip to Ontario by taking into account the average temperature totals by month.
If weather is an important factor for your trip to Ontario, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 78.8 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 53.6 F).
When is the best time to book a flight to Ontario?
The price you pay for your flight to Ontario may vary depending on when you book. For the best chance of a lower fare, look to book 46 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
The best insider tips for flights to Ontario
AI-powered summary based on content written by travel experts. AI can make mistakes.
Cheapflights partnered with top experts to bring you the best recommendations for your Ontario trip
Our travel experts
Reviews of airlines servicing Ontario
Get insights into the airlines that provide service to Ontario. 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 Ontario. Reviews last updated August 5, 2026.
Peruse reviews from past customers who have flown Southwest,Delta, andAmerican Airlines to the United States to help guide your decision. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Comfort
8.0
Food
7.0
Crew
8.6
Boarding
8.1
Overall
8.0
Entertainment
7.5
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Comfort
8.0
Food
7.0
Crew
8.6
Boarding
8.1
Overall
8.0
Entertainment
7.5
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Comfort
8.0
Food
7.0
Crew
8.6
Boarding
8.1
Overall
8.0
Entertainment
7.5
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Comfort
8.0
Food
7.0
Crew
8.6
Boarding
8.1
Overall
8.0
Entertainment
7.5
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Comfort
8.0
Food
7.0
Crew
8.6
Boarding
8.1
Overall
8.0
Entertainment
7.5
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Comfort
8.0
Food
7.0
Crew
8.6
Boarding
8.1
Overall
8.0
Entertainment
7.5
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
FAQs about flying to Ontario
Ontario, CA airport overview
At just 2.3 miles (3.7km) east of downtown Ontario, Ontario International Airport (ONT) is a small but well-equipped alternative to Los Angeles Airport and John Wayne Airport for passengers flying to California.
The number of flights to Ontario International Airport has been declining steadily in recent years (there were 4.8 million passengers in 2010, but the terminals are built to handle twice that) – some say due to the lack of direct flights to major destinations, in comparison with other airports nearby. However, those who use the airport agree that it is a convenient alternative, well connected to nearby air fields and towns, easy to get in and out of, clean and with good basic facilities.
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