$147+ Cheap flights from John F Kennedy Intl, NY (JFK) 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 5/26. Fares are subject to change and may not be available on all flights or dates of travel.
JFK — ONT
May 22 — May 291
Round-trip
1 adult, Economy
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Find cheap flights from John F Kennedy Intl 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
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheapflights Tip: The best prices from New York John F Kennedy Intl to Ontario are usually found in January or October, booked 58 days in advance, depart on a Friday or Wednesday and return on a Sunday
Cheap flight deals from John F Kennedy Intl to Ontario
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Best
Last-minute
One-way
Cheapest flights from John F Kennedy Intl to OntarioExplore the most affordable flight options available from John F Kennedy Intl to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 22, 2026.
Explore the most affordable flight options available from John F Kennedy Intl to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 22, 2026.
This American Airlines deal was found by Cheapflights users on 4/18. Clicking the “Pick Dates” 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 5/128:29 am
JFK
- ONT
1 stop10h 53m
American Airlines
Tue 5/1911:59 pm
ONT
- JFK
1 stop8h 40m
American Airlines
Deal found 4/18![American Airlines logo]()
$281
This Super.com deal was found by Cheapflights users on 4/21. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/295:30 pm
JFK
- ONT
Nonstop6h 17m
JetBlue
Tue 6/210:41 pm
ONT
- JFK
Nonstop5h 29m
JetBlue
Deal found 4/21![JetBlue logo]()
$288
This Super.com deal was found by Cheapflights users on 4/21. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/77:30 pm
JFK
- ONT
Nonstop6h 05m
JetBlue
Fri 8/1411:50 pm
ONT
- JFK
Nonstop5h 21m
JetBlue
Deal found 4/21![JetBlue logo]()
$289
This Trip.com deal was found by Cheapflights users on 4/20. 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.
Thu 5/77:00 am
JFK
- ONT
1 stop10h 32m
Alaska Airlines
Tue 5/1210:39 am
ONT
- JFK
1 stop9h 20m
Alaska Airlines
Deal found 4/20![Alaska Airlines logo]()
$290
This Trip.com deal was found by Cheapflights users on 4/19. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/57:00 am
JFK
- ONT
1 stop10h 32m
Alaska Airlines
Sat 5/96:00 am
ONT
- JFK
1 stop10h 27m
Alaska Airlines
Deal found 4/19![Alaska Airlines logo]()
$291
This Trip.com deal was found by Cheapflights users on 4/20. 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.
Fri 5/84:29 pm
JFK
- ONT
1 stop10h 30m
Alaska Airlines
Sat 5/96:00 am
ONT
- JFK
1 stop10h 27m
Alaska Airlines
Deal found 4/20![Alaska Airlines logo]()
$292
This Super.com deal was found by Cheapflights users on 4/20. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/77:30 pm
JFK
- ONT
Nonstop6h 05m
JetBlue
Sat 8/1511:24 pm
ONT
- JFK
Nonstop5h 21m
JetBlue
Deal found 4/20![JetBlue logo]()
$294
This Jetabroad deal was found by Cheapflights users on 4/21. 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 Jetabroad is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/107:30 pm
JFK
- ONT
Nonstop6h 05m
JetBlue
Sun 8/1611:50 pm
ONT
- JFK
Nonstop5h 21m
JetBlue
Deal found 4/21![JetBlue logo]()
$296
This JetBlue deal was found by Cheapflights users on 4/20. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/167:33 pm
JFK
- ONT
Nonstop6h 06m
JetBlue
Wed 6/2411:54 pm
ONT
- JFK
Nonstop5h 24m
JetBlue
Deal found 4/20![JetBlue logo]()
$297
This Delta deal was found by Cheapflights users on 4/21. 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 6/411:10 am
JFK
- ONT
1 stop10h 26m
Delta
Tue 6/95:59 pm
ONT
- JFK
1 stop9h 35m
Delta
Deal found 4/21![Delta logo]()
$298
Best flights from John F Kennedy Intl to OntarioDiscover carefully curated flight deals from John F Kennedy Intl to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 22, 2026.
Discover carefully curated flight deals from John F Kennedy Intl to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 22, 2026.
This Alaska Airlines deal was found by Cheapflights users on 4/19. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/54:29 pm
JFK
- ONT
1 stop10h 19m
Alaska Airlines
Sat 5/96:00 am
ONT
- JFK
1 stop10h 27m
Alaska Airlines
Deal found 4/19![Alaska Airlines logo]()
$307
This JetBlue deal was found by Cheapflights users on 4/20. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/256:59 pm
JFK
- ONT
Nonstop6h 06m
JetBlue
Sat 8/111:24 pm
ONT
- JFK
Nonstop5h 21m
JetBlue
Deal found 4/20![JetBlue logo]()
$402
This Alaska Airlines deal was found by Cheapflights users on 4/17. Clicking the “Pick Dates” 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.
Mon 5/47:00 am
JFK
- ONT
1 stop10h 32m
Alaska Airlines
Thu 5/710:39 am
ONT
- JFK
1 stop9h 20m
Alaska Airlines
Deal found 4/17![Alaska Airlines logo]()
$335
This Alaska Airlines deal was found by Cheapflights users on 4/17. Clicking the “Pick Dates” 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.
Tue 9/19:55 am
JFK
- ONT
1 stop10h 15m
Alaska Airlines
Wed 9/167:10 am
ONT
- JFK
1 stop9h 02m
Alaska Airlines
Deal found 4/17![Alaska Airlines logo]()
$363
This JetBlue deal was found by Cheapflights users on 4/21. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/285:15 pm
JFK
- ONT
Nonstop5h 58m
JetBlue
Sat 10/1711:05 pm
ONT
- JFK
Nonstop5h 21m
JetBlue
Deal found 4/21![JetBlue logo]()
$487
This Alaska Airlines deal was found by Cheapflights users on 4/21. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/287:00 am
JFK
- ONT
1 stop11h 09m
Alaska Airlines
Tue 6/24:03 pm
ONT
- JFK
1 stop12h 13m
Alaska Airlines
Deal found 4/21![Alaska Airlines logo]()
$421
This Alaska Airlines deal was found by Cheapflights users on 4/20. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/94:29 pm
JFK
- ONT
1 stop10h 19m
Alaska Airlines
Wed 5/207:00 am
ONT
- JFK
1 stop9h 13m
Alaska Airlines
Deal found 4/20![Alaska Airlines logo]()
$451
This Alaska Airlines deal was found by Cheapflights users on 4/18. Clicking the “Pick Dates” 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 10/87:00 am
JFK
- ONT
1 stop10h 47m
Alaska Airlines
Thu 10/86:10 pm
ONT
- JFK
1 stop10h 15m
Alaska Airlines
Deal found 4/18![Alaska Airlines logo]()
$471
This Alaska Airlines deal was found by Cheapflights users on 4/17. Clicking the “Pick Dates” 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 8/204:05 pm
JFK
- ONT
1 stop10h 19m
Alaska Airlines
Sun 8/236:05 pm
ONT
- JFK
1 stop8h 59m
Alaska Airlines
Deal found 4/17![Alaska Airlines logo]()
$479
This Alaska Airlines deal was found by Cheapflights users on 4/19. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/244:05 pm
JFK
- ONT
1 stop10h 19m
Alaska Airlines
Sun 8/306:05 pm
ONT
- JFK
1 stop8h 59m
Alaska Airlines
Deal found 4/19![Alaska Airlines logo]()
$479
This Alaska Airlines deal was found by Cheapflights users on 4/19. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/84:01 pm
JFK
- ONT
2 stops20h 50m
Alaska Airlines
Tue 9/1510:45 am
ONT
- JFK
1 stop29h 42m
Alaska Airlines
Deal found 4/19![Alaska Airlines logo]()
$507
This Alaska Airlines deal was found by Cheapflights users on 4/22. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/68:28 pm
JFK
- ONT
1 stop17h 42m
Alaska Airlines
Wed 6/107:00 am
ONT
- JFK
1 stop9h 23m
Alaska Airlines
Deal found 4/22![Alaska Airlines logo]()
$530
Last-minute flights from John F Kennedy Intl to OntarioDiscover last-minute flight deals from John F Kennedy Intl to Ontario. Data last updated April 22, 2026 and is based on user searches.
Discover last-minute flight deals from John F Kennedy Intl to Ontario. Data last updated April 22, 2026 and is based on user searches.
This Trip.com deal was found by Cheapflights users on 4/19. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/57:00 am
JFK
- ONT
1 stop10h 32m
Alaska Airlines
Sat 5/96:00 am
ONT
- JFK
1 stop10h 27m
Alaska Airlines
Deal found 4/19![Alaska Airlines logo]()
$291
This Kiwi.com deal was found by Cheapflights users on 4/20. 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 5/67:00 am
JFK
- ONT
1 stop10h 30m
Alaska Airlines
Sat 5/96:00 am
ONT
- JFK
1 stop10h 27m
Alaska Airlines
Deal found 4/20![Alaska Airlines logo]()
$305
This Trip.com deal was found by Cheapflights users on 4/20. 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.
Thu 5/77:00 am
JFK
- ONT
1 stop10h 32m
Alaska Airlines
Tue 5/1210:39 am
ONT
- JFK
1 stop9h 20m
Alaska Airlines
Deal found 4/20![Alaska Airlines logo]()
$290
This Trip.com deal was found by Cheapflights users on 4/20. 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.
Fri 5/84:29 pm
JFK
- ONT
1 stop10h 30m
Alaska Airlines
Sat 5/96:00 am
ONT
- JFK
1 stop10h 27m
Alaska Airlines
Deal found 4/20![Alaska Airlines logo]()
$292
This American Airlines deal was found by Cheapflights users on 4/18. Clicking the “Pick Dates” 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 5/128:29 am
JFK
- ONT
1 stop10h 53m
American Airlines
Tue 5/1911:59 pm
ONT
- JFK
1 stop8h 40m
American Airlines
Deal found 4/18![American Airlines logo]()
$281
This JetBlue deal was found by Cheapflights users on 4/20. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/275:30 pm
JFK
- ONT
Nonstop6h 17m
JetBlue
Tue 6/210:41 pm
ONT
- JFK
Nonstop5h 29m
JetBlue
Deal found 4/20![JetBlue logo]()
$297
This Jetabroad deal was found by Cheapflights users on 4/21. 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 Jetabroad is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/285:30 pm
JFK
- ONT
Nonstop6h 17m
JetBlue
Tue 6/210:41 pm
ONT
- JFK
Nonstop5h 29m
JetBlue
Deal found 4/21![JetBlue logo]()
$296
This Jetabroad deal was found by Cheapflights users on 4/22. 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 Jetabroad is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/285:30 pm
JFK
- ONT
Nonstop6h 17m
JetBlue
Fri 5/2910:41 pm
ONT
- JFK
Nonstop5h 29m
JetBlue
Deal found 4/22![JetBlue logo]()
$300
This Super.com deal was found by Cheapflights users on 4/21. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/295:30 pm
JFK
- ONT
Nonstop6h 17m
JetBlue
Tue 6/210:41 pm
ONT
- JFK
Nonstop5h 29m
JetBlue
Deal found 4/21![JetBlue logo]()
$288
One-way flights from John F Kennedy Intl to OntarioSearch for one-way flight options from John F Kennedy Intl to Ontario. Find affordable one-way fares based on user searches. Data last updated April 22, 2026.
Search for one-way flight options from John F Kennedy Intl to Ontario. Find affordable one-way fares based on user searches. Data last updated April 22, 2026.
This Super.com deal was found by Cheapflights users on 4/19. 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.
Tue 5/265:30 pm
JFK
- ONT
Nonstop6h 17m
JetBlue
Deal found 4/19![JetBlue logo]()
$147
This American Airlines deal was found by Cheapflights users on 4/20. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/2912:29 pm
JFK
- ONT
1 stop8h 53m
American Airlines
Deal found 4/20![American Airlines logo]()
$148
This JetBlue deal was found by Cheapflights users on 4/20. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/55:30 pm
JFK
- ONT
Nonstop6h 17m
JetBlue
Deal found 4/20![JetBlue logo]()
$149
This Kiwi.com deal was found by Cheapflights users on 4/19. 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.
Wed 5/61:00 pm
JFK
- ONT
2 stops24h 51m
Frontier
Deal found 4/19![Frontier logo]()
$151
This Jettzy deal was found by Cheapflights users on 4/21. 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 Jettzy is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/67:00 am
JFK
- ONT
1 stop10h 30m
Alaska Airlines
Deal found 4/21![Alaska Airlines logo]()
$152
This Jetabroad deal was found by Cheapflights users on 4/21. 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 Jetabroad is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/187:33 pm
JFK
- ONT
Nonstop6h 06m
JetBlue
Deal found 4/21![JetBlue logo]()
$153
This Alaska Airlines deal was found by Cheapflights users on 4/20. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/84:29 pm
JFK
- ONT
1 stop10h 30m
Alaska Airlines
Deal found 4/20![Alaska Airlines logo]()
$154
This Kiwi.com deal was found by Cheapflights users on 4/19. 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.
Wed 5/271:00 pm
JFK
- ONT
2 stops22h 04m
Frontier
Deal found 4/19![Frontier logo]()
$157
This Alaska Airlines deal was found by Cheapflights users on 4/21. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/74:29 pm
JFK
- ONT
1 stop10h 30m
Alaska Airlines
Deal found 4/21![Alaska Airlines logo]()
$159
This Kiwi.com deal was found by Cheapflights users on 4/19. 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.
Thu 5/71:00 pm
JFK
- ONT
2 stops21h 35m
Multiple Airlines
Deal found 4/19![Multiple Airlines logo]()
$161
This Trip.com deal was found by Cheapflights users on 4/18. Clicking the “Pick Dates” 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 5/151:00 pm
JFK
- ONT
2 stops29h 09m
Frontier
Deal found 4/18![Frontier logo]()
$162
Find flight deals from John F Kennedy Intl to Ontario
Discover tips and strategies to find the most affordable flight options for your journey from John F Kennedy Intl (JFK) to Ontario (ONT). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated April 22, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $281 (American Airlines) |
One-way from | $147 (Super.com) |
Popular in | December |
Cheapest in | January |
Average price | $457 |
Good round-trip deal | $303 or less |
Good one-way deal | $163 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from John F Kennedy Intl 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 April 22, 2026.
Use the filters below to find and compare flights from New York John F Kennedy Intl Airport to Ontario that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
New YorkOntario
JFK - ONT
JFKONT
New York John F Kennedy Intl
Tue 5/5
4:29 pm-11:48 pm
1 stop10h 19m
Ontario
Sat 5/9
6:00 am-7:27 pm
1 stop10h 27m
$307
New YorkOntario
JFK - ONT
JFKONT
New York John F Kennedy Intl
Mon 5/4
7:00 am-2:32 pm
1 stop10h 32m
Ontario
Thu 5/7
10:39 am-10:59 pm
1 stop9h 20m
$335
New YorkOntario
JFK - ONT
JFKONT
New York John F Kennedy Intl
Tue 9/1
9:55 am-5:10 pm
1 stop10h 15m
Ontario
Wed 9/16
7:10 am-7:12 pm
1 stop9h 02m
$363
New YorkOntario
JFK - ONT
JFKONT
New York John F Kennedy Intl
Sat 7/25
6:59 pm-10:05 pm
Nonstop6h 06m
Ontario
Sat 8/1
11:24 pm-7:45 am
Nonstop5h 21m
$402
New YorkOntario
JFK - ONT
JFKONT
New York John F Kennedy Intl
Thu 5/28
7:00 am-3:09 pm
1 stop11h 09m
Ontario
Tue 6/2
4:03 pm-7:16 am
1 stop12h 13m
$421
New YorkOntario
JFK - ONT
JFKONT
New York John F Kennedy Intl
Sat 5/9
4:29 pm-11:48 pm
1 stop10h 19m
Ontario
Wed 5/20
7:00 am-7:13 pm
1 stop9h 13m
$451
New YorkOntario
JFK - ONT
JFKONT
New York John F Kennedy Intl
Thu 10/8
7:00 am-2:47 pm
1 stop10h 47m
Ontario
Thu 10/8
6:10 pm-7:25 am
1 stop10h 15m
$471
New YorkOntario
JFK - ONT
JFKONT
New York John F Kennedy Intl
Thu 8/20
4:05 pm-11:24 pm
1 stop10h 19m
Ontario
Sun 8/23
6:05 pm-6:04 am
1 stop8h 59m
$479
New YorkOntario
JFK - ONT
JFKONT
New York John F Kennedy Intl
Mon 8/24
4:05 pm-11:24 pm
1 stop10h 19m
Ontario
Sun 8/30
6:05 pm-6:04 am
1 stop8h 59m
$479
Quickest round-trip
New YorkOntario
JFK - ONT
JFKONT
New York John F Kennedy Intl
Mon 9/28
5:15 pm-8:13 pm
Nonstop5h 58m
Ontario
Sat 10/17
11:05 pm-7:26 am
Nonstop5h 21m
$487
Showing 1-10 of 24 resultsSorted by cheapest first
Compare providers for flights from John F Kennedy Intl 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 from John F Kennedy Intl to Ontario in April.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on New York John F Kennedy Intl Airport-Ontario flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on New York John F Kennedy Intl Airport-Ontario flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from New York John F Kennedy Intl Airport-Ontario flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on New York John F Kennedy Intl Airport-Ontario flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for New York John F Kennedy Intl Airport-Ontario flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from John F Kennedy Intl to Ontario
Have a flexible travel schedule? Discover the best time to fly to Ontario from John F Kennedy Intl with our price prediction graph.
JFK-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 New York John F Kennedy Intl Airport to Ontario
How far ahead should I book a flight from New York John F Kennedy Intl Airport to Ontario?
Use this chart to determine the optimal time to book a round-trip flight from John F Kennedy Intl to Ontario. Price data was last updated on April 17, 2026.
The price you pay for your flight from New York John F Kennedy Intl Airport to Ontario may vary depending on when you book. For the best chance of a lower fare, look to book 58 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
What is the cheapest month to book a flight from New York John F Kennedy Intl Airport to Ontario?
Currently, January is the cheapest month in which you can book a flight from New York John F Kennedy Intl Airport to Ontario (average of $282). Flying from New York John F Kennedy Intl Airport to Ontario in December is currently the most expensive (average of $654). 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 New York John F Kennedy Intl Airport to Ontario?
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 April 22, 2026.
Read through reviews of airlines operating flights from New York John F Kennedy Intl Airport to Ontario, such as Delta,JetBlue, andAmerican Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Boarding
8.1
Comfort
7.9
Overall
7.9
Crew
8.5
Entertainment
7.8
Food
7.2
Reviews
1 / 20
10.0
ExcellentKymberlee,Oct 2024
JFK - ATL
Boarding
8.1
Comfort
7.9
Overall
7.9
Crew
8.5
Entertainment
7.8
Food
7.2
Reviews
1 / 20
10.0
ExcellentKymberlee,Oct 2024
JFK - ATL
Boarding
8.1
Comfort
7.9
Overall
7.9
Crew
8.5
Entertainment
7.8
Food
7.2
Reviews
1 / 20
10.0
ExcellentKymberlee,Oct 2024
JFK - ATL
Boarding
8.1
Comfort
7.9
Overall
7.9
Crew
8.5
Entertainment
7.8
Food
7.2
Reviews
1 / 20
10.0
ExcellentKymberlee,Oct 2024
JFK - ATL
Boarding
8.1
Comfort
7.9
Overall
7.9
Crew
8.5
Entertainment
7.8
Food
7.2
Reviews
1 / 20
10.0
ExcellentKymberlee,Oct 2024
JFK - ATL
Related info for your journey
Find useful and relevant information for your journey from John F Kennedy Intl to Ontario. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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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 April 22, 2026.
John F Kennedy Intl and Ontario flights
Browse other John F Kennedy Intl and Ontario flight options. Last updated on April 22, 2026.
Other flights from John F Kennedy Intl
Browse through other flights departing from John F Kennedy Intl. Flights are based on user searches made on Cheapflights and were last updated on April 22, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 4 airlines flying from John F Kennedy Intl to Ontario
Discover the top 4 airlines that operate flights from John F Kennedy Intl 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 April 22, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$139 | Average$246 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$148 | Average$299 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$251 | Average$454 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$252 | Average$345 | FlexibilityNo cancel fee | On-time62% |