$129+ 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 5/6. Fares are subject to change and may not be available on all flights or dates of travel.
JFK — ONT
Apr 11 — Apr 181
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 28 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 March 12, 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 March 12, 2026.
This JetBlue deal was found by Cheapflights users on 3/9. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/146:59 pm
JFK
- ONT
Nonstop6h 10m
JetBlue
Tue 5/1911:25 pm
ONT
- JFK
Nonstop5h 25m
JetBlue
Deal found 3/9![JetBlue logo]()
$272
This JetBlue deal was found by Cheapflights users on 3/9. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/146:59 pm
JFK
- ONT
Nonstop6h 10m
JetBlue
Mon 5/1811:25 pm
ONT
- JFK
Nonstop5h 25m
JetBlue
Deal found 3/9![JetBlue logo]()
$277
This Alaska Airlines deal was found by Cheapflights users on 3/9. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/227:00 am
JFK
- ONT
1 stop10h 32m
Alaska Airlines
Sat 4/2510:39 am
ONT
- JFK
1 stop9h 20m
Alaska Airlines
Deal found 3/9![Alaska Airlines logo]()
$281
This Cheapflightsfares deal was found by Cheapflights users on 3/9. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/37:35 pm
JFK
- ONT
Nonstop6h 05m
JetBlue
Fri 9/1110:56 pm
ONT
- JFK
Nonstop5h 22m
JetBlue
Deal found 3/9![JetBlue logo]()
$282
This American Airlines deal was found by Cheapflights users on 3/8. 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.
Sat 4/1811:00 am
JFK
- ONT
2 stops11h 34m
American Airlines
Sat 4/2511:59 pm
ONT
- JFK
1 stop10h 29m
American Airlines
Deal found 3/8![American Airlines logo]()
$286
This JetBlue deal was found by Cheapflights users on 3/10. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/196:59 pm
JFK
- ONT
Nonstop6h 10m
JetBlue
Tue 5/2610:00 pm
ONT
- JFK
Nonstop5h 16m
JetBlue
Deal found 3/10![JetBlue logo]()
$287
This Delta deal was found by Cheapflights users on 3/9. 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.
Thu 5/76:00 am
JFK
- ONT
1 stop7h 57m
Delta
Sat 5/1612:08 pm
ONT
- JFK
1 stop7h 55m
Delta
Deal found 3/9![Delta logo]()
$289
This Super.com deal was found by Cheapflights users on 3/9. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/156:59 pm
JFK
- ONT
Nonstop6h 10m
JetBlue
Mon 5/2510:00 pm
ONT
- JFK
Nonstop5h 16m
JetBlue
Deal found 3/9![JetBlue logo]()
$290
This Priceline deal was found by Cheapflights users on 3/10. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/156:59 pm
JFK
- ONT
Nonstop6h 10m
JetBlue
Tue 5/1911:25 pm
ONT
- JFK
Nonstop5h 25m
JetBlue
Deal found 3/10![JetBlue logo]()
$292
This American Airlines deal was found by Cheapflights users on 3/12. 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.
Wed 4/88:29 am
JFK
- ONT
1 stop10h 53m
American Airlines
Wed 4/156:15 am
ONT
- JFK
2 stops10h 50m
American Airlines
Deal found 3/12![American Airlines logo]()
$294
This Alaska Airlines deal was found by Cheapflights users on 3/8. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/304:29 pm
JFK
- ONT
1 stop10h 30m
Alaska Airlines
Mon 5/410:39 am
ONT
- JFK
1 stop9h 20m
Alaska Airlines
Deal found 3/8![Alaska Airlines logo]()
$297
This JetBlue deal was found by Cheapflights users on 3/8. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/37:35 pm
JFK
- ONT
Nonstop6h 05m
JetBlue
Mon 9/711:59 pm
ONT
- JFK
Nonstop5h 22m
JetBlue
Deal found 3/8![JetBlue 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 March 12, 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 March 12, 2026.
This Alaska Airlines deal was found by Cheapflights users on 3/11. 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.
Tue 5/54:29 pm
JFK
- ONT
1 stop10h 19m
Alaska Airlines
Wed 5/610:39 am
ONT
- JFK
1 stop9h 20m
Alaska Airlines
Deal found 3/11![Alaska Airlines logo]()
$350
This Delta deal was found by Cheapflights users on 3/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/86:00 am
JFK
- ONT
1 stop7h 57m
Delta
Sun 5/107:05 am
ONT
- JFK
1 stop8h 02m
Delta
Deal found 3/10![Delta logo]()
$368
This JetBlue deal was found by Cheapflights users on 3/8. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/167:35 pm
JFK
- ONT
Nonstop6h 05m
JetBlue
Wed 6/2411:59 pm
ONT
- JFK
Nonstop5h 22m
JetBlue
Deal found 3/8![JetBlue logo]()
$387
This Alaska Airlines deal was found by Cheapflights users on 3/7. 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.
Tue 9/15:29 pm
JFK
- ONT
1 stop9h 30m
Alaska Airlines
Sat 9/57:30 am
ONT
- JFK
1 stop8h 27m
Alaska Airlines
Deal found 3/7![Alaska Airlines logo]()
$358
This Alaska Airlines deal was found by Cheapflights users on 3/9. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/304:29 pm
JFK
- ONT
1 stop10h 30m
Alaska Airlines
Mon 5/410:39 am
ONT
- JFK
1 stop9h 20m
Alaska Airlines
Deal found 3/9![Alaska Airlines logo]()
$362
This JetBlue deal was found by Cheapflights users on 3/7. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/157:35 pm
JFK
- ONT
Nonstop6h 05m
JetBlue
Sat 6/2011:59 pm
ONT
- JFK
Nonstop5h 22m
JetBlue
Deal found 3/7![JetBlue logo]()
$417
This Alaska Airlines deal was found by Cheapflights users on 3/7. 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.
Tue 3/2411:30 am
JFK
- ONT
1 stop9h 43m
Alaska Airlines
Tue 4/146:00 am
ONT
- JFK
1 stop13h 59m
Alaska Airlines
Deal found 3/7![Alaska Airlines logo]()
$434
This JetBlue deal was found by Cheapflights users on 3/7. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/227:35 pm
JFK
- ONT
Nonstop6h 05m
JetBlue
Tue 6/3011:59 pm
ONT
- JFK
Nonstop5h 22m
JetBlue
Deal found 3/7![JetBlue logo]()
$482
This Alaska Airlines deal was found by Cheapflights users on 3/7. 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.
Sat 5/27:00 am
JFK
- ONT
1 stop10h 32m
Alaska Airlines
Sat 5/910:39 am
ONT
- JFK
1 stop9h 20m
Alaska Airlines
Deal found 3/7![Alaska Airlines logo]()
$447
This Alaska Airlines deal was found by Cheapflights users on 3/10. 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 4/164:29 pm
JFK
- ONT
1 stop10h 30m
Alaska Airlines
Tue 4/2110:33 am
ONT
- JFK
1 stop9h 26m
Alaska Airlines
Deal found 3/10![Alaska Airlines logo]()
$463
This Alaska Airlines deal was found by Cheapflights users on 3/7. 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 4/14:29 pm
JFK
- ONT
1 stop10h 30m
Alaska Airlines
Mon 4/67:08 pm
ONT
- JFK
1 stop9h 04m
Alaska Airlines
Deal found 3/7![Alaska Airlines logo]()
$507
This Alaska Airlines deal was found by Cheapflights users on 3/8. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/295:29 pm
JFK
- ONT
1 stop9h 30m
Alaska Airlines
Sun 8/306:10 pm
ONT
- JFK
1 stop9h 05m
Alaska Airlines
Deal found 3/8![Alaska Airlines logo]()
$519
Last-minute flights from John F Kennedy Intl to OntarioDiscover last-minute flight deals from John F Kennedy Intl to Ontario. Data last updated March 12, 2026 and is based on user searches.
Discover last-minute flight deals from John F Kennedy Intl to Ontario. Data last updated March 12, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 3/9. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/711:00 am
JFK
- ONT
2 stops10h 24m
American Airlines
Tue 4/711:59 pm
ONT
- JFK
1 stop10h 29m
American Airlines
Deal found 3/9![American Airlines logo]()
$292
This American Airlines deal was found by Cheapflights users on 3/12. 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.
Wed 4/88:29 am
JFK
- ONT
1 stop10h 53m
American Airlines
Wed 4/156:15 am
ONT
- JFK
2 stops10h 50m
American Airlines
Deal found 3/12![American Airlines logo]()
$294
This American Airlines deal was found by Cheapflights users on 3/9. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/85:20 pm
JFK
- ONT
1 stop9h 26m
American Airlines
Tue 4/1411:59 pm
ONT
- JFK
1 stop8h 35m
American Airlines
Deal found 3/9![American Airlines logo]()
$302
This American Airlines deal was found by Cheapflights users on 3/9. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/142:30 pm
JFK
- ONT
1 stop8h 57m
American Airlines
Fri 4/1711:59 pm
ONT
- JFK
1 stop10h 29m
American Airlines
Deal found 3/9![American Airlines logo]()
$287
This American Airlines deal was found by Cheapflights users on 3/10. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/155:20 pm
JFK
- ONT
1 stop9h 26m
American Airlines
Sat 4/1811:59 pm
ONT
- JFK
1 stop10h 29m
American Airlines
Deal found 3/10![American Airlines logo]()
$299
This American Airlines deal was found by Cheapflights users on 3/8. 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.
Sat 4/1811:00 am
JFK
- ONT
2 stops11h 34m
American Airlines
Sat 4/2511:59 pm
ONT
- JFK
1 stop10h 29m
American Airlines
Deal found 3/8![American Airlines logo]()
$286
This Alaska Airlines deal was found by Cheapflights users on 3/9. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/227:00 am
JFK
- ONT
1 stop10h 32m
Alaska Airlines
Sat 4/2510:39 am
ONT
- JFK
1 stop9h 20m
Alaska Airlines
Deal found 3/9![Alaska Airlines logo]()
$281
This Alaska Airlines deal was found by Cheapflights users on 3/9. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/287:00 am
JFK
- ONT
1 stop10h 32m
Alaska Airlines
Wed 5/610:39 am
ONT
- JFK
1 stop9h 20m
Alaska Airlines
Deal found 3/9![Alaska Airlines logo]()
$301
This Alaska Airlines deal was found by Cheapflights users on 3/8. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/304:29 pm
JFK
- ONT
1 stop10h 30m
Alaska Airlines
Mon 5/410:39 am
ONT
- JFK
1 stop9h 20m
Alaska Airlines
Deal found 3/8![Alaska Airlines logo]()
$297
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 March 12, 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 March 12, 2026.
This Kiwi.com deal was found by Cheapflights users on 3/10. 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.
Wed 5/611:30 am
JFK
- ONT
2 stops23h 01m
Frontier
Deal found 3/10![Frontier logo]()
$129
This JetBlue deal was found by Cheapflights users on 3/9. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/196:59 pm
JFK
- ONT
Nonstop6h 10m
JetBlue
Deal found 3/9![JetBlue logo]()
$134
This Kiwi.com deal was found by Cheapflights users on 3/10. 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.
Tue 4/71:14 pm
JFK
- ONT
2 stops29h 43m
Frontier
Deal found 3/10![Frontier logo]()
$138
This FlightHub deal was found by Cheapflights users on 3/9. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/166:59 pm
JFK
- ONT
Nonstop6h 10m
JetBlue
Deal found 3/9![JetBlue logo]()
$139
This Super.com deal was found by Cheapflights users on 3/9. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/206:59 pm
JFK
- ONT
Nonstop6h 10m
JetBlue
Deal found 3/9![JetBlue logo]()
$140
This Alaska Airlines deal was found by Cheapflights users on 3/9. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/227:00 am
JFK
- ONT
1 stop10h 32m
Alaska Airlines
Deal found 3/9![Alaska Airlines logo]()
$141
This American Airlines deal was found by Cheapflights users on 3/9. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/146:35 am
JFK
- ONT
1 stop7h 59m
American Airlines
Deal found 3/9![American Airlines logo]()
$142
This Super.com deal was found by Cheapflights users on 3/9. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/156:59 pm
JFK
- ONT
Nonstop6h 10m
JetBlue
Deal found 3/9![JetBlue logo]()
$145
This Kiwi.com deal was found by Cheapflights users on 3/11. 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.
Fri 5/81:00 pm
JFK
- ONT
2 stops37h 49m
Frontier
Deal found 3/11![Frontier logo]()
$146
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 March 12, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $272 (Cheapflightsfares) |
One-way from | $129 (Kiwi.com) |
Popular in | December |
Cheapest in | January |
Average price | $448 |
Good round-trip deal | $432 or less |
Good one-way deal | $248 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 March 12, 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
Wed 5/6
10:39 am-10:59 pm
1 stop9h 20m
$350
New YorkOntario
JFK - ONT
JFKONT
New York John F Kennedy Intl
Tue 9/1
5:29 pm-11:59 pm
1 stop9h 30m
Ontario
Sat 9/5
7:30 am-6:57 pm
1 stop8h 27m
$358
New YorkOntario
JFK - ONT
JFKONT
New York John F Kennedy Intl
Thu 4/30
4:29 pm-11:59 pm
1 stop10h 30m
Ontario
Mon 5/4
10:39 am-10:59 pm
1 stop9h 20m
$362
New YorkOntario
JFK - ONT
JFKONT
New York John F Kennedy Intl
Fri 5/8
6:00 am-10:57 am
1 stop7h 57m
Ontario
Sun 5/10
7:05 am-6:07 pm
1 stop8h 02m
$368
Quickest round-trip
New YorkOntario
JFK - ONT
JFKONT
New York John F Kennedy Intl
Tue 6/16
7:35 pm-10:40 pm
Nonstop6h 05m
Ontario
Wed 6/24
11:59 pm-8:21 am
Nonstop5h 22m
$387
New YorkOntario
JFK - ONT
JFKONT
New York John F Kennedy Intl
Mon 6/15
7:35 pm-10:40 pm
Nonstop6h 05m
Ontario
Sat 6/20
11:59 pm-8:21 am
Nonstop5h 22m
$417
New YorkOntario
JFK - ONT
JFKONT
New York John F Kennedy Intl
Tue 3/24
11:30 am-6:13 pm
1 stop9h 43m
Ontario
Tue 4/14
6:00 am-10:59 pm
1 stop13h 59m
$434
New YorkOntario
JFK - ONT
JFKONT
New York John F Kennedy Intl
Sat 5/2
7:00 am-2:32 pm
1 stop10h 32m
Ontario
Sat 5/9
10:39 am-10:59 pm
1 stop9h 20m
$447
New YorkOntario
JFK - ONT
JFKONT
New York John F Kennedy Intl
Thu 4/16
4:29 pm-11:59 pm
1 stop10h 30m
Ontario
Tue 4/21
10:33 am-10:59 pm
1 stop9h 26m
$463
New YorkOntario
JFK - ONT
JFKONT
New York John F Kennedy Intl
Mon 6/22
7:35 pm-10:40 pm
Nonstop6h 05m
Ontario
Tue 6/30
11:59 pm-8:21 am
Nonstop5h 22m
$482
Showing 1-10 of 23 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 March.
| 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 | |
| Price Accuracy- | Trust Score*1 star |
- 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 March 6, 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 28 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 $113). Flying from New York John F Kennedy Intl Airport to Ontario in June is currently the most expensive (average of $183). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
Reviews of airlines servicing 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 March 12, 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.
Entertainment
7.8
Boarding
8.1
Comfort
7.9
Crew
8.5
Overall
7.9
Food
7.2
Reviews
1 / 20
10.0
ExcellentKymberlee,Oct 2024
JFK - ATL
Entertainment
7.8
Boarding
8.1
Comfort
7.9
Crew
8.5
Overall
7.9
Food
7.2
Reviews
1 / 20
10.0
ExcellentKymberlee,Oct 2024
JFK - ATL
Entertainment
7.8
Boarding
8.1
Comfort
7.9
Crew
8.5
Overall
7.9
Food
7.2
Reviews
1 / 20
10.0
ExcellentKymberlee,Oct 2024
JFK - ATL
Entertainment
7.8
Boarding
8.1
Comfort
7.9
Crew
8.5
Overall
7.9
Food
7.2
Reviews
1 / 20
10.0
ExcellentKymberlee,Oct 2024
JFK - ATL
Entertainment
7.8
Boarding
8.1
Comfort
7.9
Crew
8.5
Overall
7.9
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 March 12, 2026.
John F Kennedy Intl and Ontario flights
Browse other John F Kennedy Intl and Ontario flight options. Last updated on March 12, 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 March 12, 2026.
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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 March 12, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$127 | Average$235 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$148 | Average$359 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$247 | Average$336 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$251 | Average$443 | FlexibilityNo cancel fee | On-time71% |