$154+ Cheap flights from John F Kennedy Intl, NY (JFK) to Ontario (ONT)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/26. Fares are subject to change and may not be available on all flights or dates of travel.
JFK — ONT
Oct 8 — Oct 151
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 October or January, booked 22 days in advance, depart on a Wednesday or Tuesday and return on a Monday
Cheap flight deals from John F Kennedy Intl to Ontario
Cheapest
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 September 8, 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 September 8, 2026.
This Trip.com deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/164:23 pm -
1 stop10h 19m
Mon 10/196:56 pm -
1 stop9h 48m
Deal found 9/7![Alaska Airlines logo]()
$293
This Trip.com deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/234:23 pm -
1 stop10h 19m
Fri 10/305:30 pm -
1 stop9h 32m
Deal found 9/7![Alaska Airlines logo]()
$295
This SmartFares deal was found by Cheapflights users on 9/4. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/246:00 am -
1 stop9h 36m
Sun 10/2511:56 am -
1 stop9h 25m
Deal found 9/4![Delta logo]()
$302
This Alaska Airlines deal was found by Cheapflights users on 9/7. 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.
Fri 10/165:20 pm -
1 stop9h 34m
Tue 11/107:15 am -
1 stop9h 04m
Deal found 9/7![Alaska Airlines logo]()
$307
This Booking.com deal was found by Cheapflights users on 9/4. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/247:22 am -
1 stop13h 38m
Sat 10/312:13 pm -
1 stop23h 24m
Deal found 9/4![Alaska Airlines logo]()
$308
This Mytrip deal was found by Cheapflights users on 9/5. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/277:22 am -
1 stop13h 38m
Tue 11/312:02 pm -
1 stop16h 23m
Deal found 9/5![Alaska Airlines logo]()
$309
This American Airlines deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/297:59 am -
1 stop8h 26m
Fri 10/21:04 pm -
1 stop7h 54m
Deal found 9/6![American Airlines logo]()
$312
This Delta deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/16:35 pm -
1 stop8h 12m
Sun 10/49:52 am -
1 stop8h 26m
Deal found 9/7![Delta logo]()
$317
This Delta deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/177:10 am -
1 stop13h 02m
Sat 11/145:59 pm -
1 stop10h 01m
Deal found 9/7![Delta logo]()
$327
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 September 8, 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 September 8, 2026.
This Delta deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/59:20 am -
1 stop10h 08m
Sat 12/121:11 pm -
1 stop7h 54m
Deal found 9/7![Delta logo]()
$307
This Alaska Airlines deal was found by Cheapflights users on 9/7. 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 9/239:55 am -
1 stop10h 23m
Fri 10/26:14 pm -
1 stop8h 47m
Deal found 9/7![Alaska Airlines logo]()
$362
This Delta deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/176:00 am -
1 stop8h 08m
Mon 12/141:11 pm -
1 stop7h 54m
Deal found 9/6![Delta logo]()
$327
This Delta deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” 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 11/186:00 am -
1 stop8h 08m
Tue 12/1511:57 am -
1 stop8h 59m
Deal found 9/6![Delta logo]()
$327
This Alaska Airlines deal was found by Cheapflights users on 9/5. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/224:23 pm -
1 stop10h 19m
Sat 10/246:02 am -
2 stops13h 27m
Deal found 9/5![Alaska Airlines logo]()
$390
This Delta deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/46:45 pm -
1 stop8h 13m
Sun 12/131:11 pm -
1 stop7h 54m
Deal found 9/7![Delta logo]()
$327
This Alaska Airlines deal was found by Cheapflights users on 9/7. 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.
Fri 10/164:23 pm -
1 stop10h 19m
Tue 10/2011:13 am -
1 stop27h 46m
Deal found 9/7![Alaska Airlines logo]()
$415
This Delta deal was found by Cheapflights users on 9/3. 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 10/292:31 pm -
1 stop8h 54m
Tue 11/312:16 pm -
1 stop7h 17m
Deal found 9/3![Delta logo]()
$362
This Alaska Airlines deal was found by Cheapflights users on 9/5. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/247:22 am -
1 stop13h 38m
Tue 10/277:25 am -
1 stop9h 00m
Deal found 9/5![Alaska Airlines logo]()
$460
This Delta deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/239:30 am -
1 stop9h 54m
Sat 12/57:05 am -
1 stop10h 19m
Deal found 9/7![Delta logo]()
$383
This Alaska Airlines deal was found by Cheapflights users on 9/7. 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 9/239:55 am -
1 stop10h 23m
Thu 10/13:14 pm -
1 stop27h 52m
Deal found 9/7![Alaska Airlines logo]()
$520
Last-minute flights from John F Kennedy Intl to OntarioDiscover last-minute flight deals from John F Kennedy Intl to Ontario. Data last updated September 8, 2026 and is based on user searches.
Discover last-minute flight deals from John F Kennedy Intl to Ontario. Data last updated September 8, 2026 and is based on user searches.
This Priceline deal was found by Cheapflights users on 9/4. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/269:55 am -
1 stop10h 23m
Tue 10/610:42 pm -
Nonstop5h 18m
Deal found 9/4![Multiple Airlines logo]()
$342
This American Airlines deal was found by Cheapflights users on 9/7. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/297:59 am -
1 stop8h 26m
Fri 10/21:04 pm -
1 stop7h 54m
Deal found 9/7![American Airlines logo]()
$312
This KAYAK deal was found by Cheapflights users on 9/2. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/306:00 am -
1 stop9h 14m
Fri 10/25:15 pm -
1 stop10h 11m
Deal found 9/2![Delta logo]()
$340
This Delta deal was found by Cheapflights users on 9/4. 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 10/146:00 am -
1 stop8h 06m
Mon 10/195:03 pm -
1 stop9h 57m
Deal found 9/4![Delta logo]()
$327
This Alaska Airlines deal was found by Cheapflights users on 9/7. 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.
Fri 10/165:20 pm -
1 stop9h 34m
Sat 10/246:02 am -
1 stop13h 27m
Deal found 9/7![Alaska Airlines logo]()
$307
This Delta deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” 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 10/216:00 am -
1 stop8h 06m
Sat 10/241:35 pm -
1 stop7h 05m
Deal found 9/6![Delta logo]()
$328
This SmartFares deal was found by Cheapflights users on 9/4. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/246:00 am -
1 stop9h 36m
Sun 10/2511:56 am -
1 stop9h 25m
Deal found 9/4![Delta logo]()
$302
This Booking.com deal was found by Cheapflights users on 9/4. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/247:22 am -
1 stop13h 38m
Sat 10/312:13 pm -
1 stop23h 24m
Deal found 9/4![Alaska Airlines logo]()
$308
This Mytrip deal was found by Cheapflights users on 9/5. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/277:22 am -
1 stop13h 38m
Tue 11/312:02 pm -
1 stop16h 23m
Deal found 9/5![Alaska Airlines logo]()
$309
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 September 8, 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 September 8, 2026.
This Alaska Airlines deal was found by Cheapflights users on 9/7. 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 9/269:55 am -
1 stop10h 23m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/7![Alaska Airlines logo]()
$154
This American Airlines deal was found by Cheapflights users on 9/7. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/297:15 am -
1 stop7h 51m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/7![American Airlines logo]()
$155
This American Airlines deal was found by Cheapflights users on 9/3. 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 11/1410:40 am -
2 stops10h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/3![American Airlines logo]()
$159
This Mytrip deal was found by Cheapflights users on 9/4. 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.
Fri 9/188:27 pm -
1 stop17h 49m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/4![Alaska Airlines logo]()
$160
This Delta deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/36:45 pm -
1 stop8h 13m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/7![Delta logo]()
$164
This KAYAK deal was found by Cheapflights users on 9/3. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/2312:59 pm -
1 stop10h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/3![Delta logo]()
$176
This KAYAK deal was found by Cheapflights users on 9/5. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/206:00 am -
1 stop8h 09m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/5![Delta logo]()
$178
This Kiwi.com deal was found by Cheapflights users on 9/3. 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.
Wed 9/231:00 pm -
2 stops33h 36m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/3![Frontier logo]()
$185
This Kiwi.com deal was found by Cheapflights users on 9/4. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/11:00 pm -
2 stops33h 36m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/4![Frontier logo]()
$186
This KAYAK deal was found by Cheapflights users on 9/4. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/295:59 pm -
Nonstop5h 58m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/4![JetBlue logo]()
$187
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 September 8, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $293 (Trip.com) |
One-way from | $154 (Alaska Airlines) |
Popular in | December |
Cheapest in | October |
Average price | $334 |
Good round-trip deal | $452 or less |
Good one-way deal | $221 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 7,457,451 searches. Data last updated September 8, 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 New York John F Kennedy Intl - ONT Ontario
JFKONT
New York John F Kennedy Intl
Sat 11/14
9:30 am-4:24 pm
1 stop9h 54m
Ontario
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$154
New YorkOntario
JFK New York John F Kennedy Intl - ONT Ontario
JFKONT
New York John F Kennedy Intl
Tue 11/10
7:00 am-3:13 pm
1 stop11h 13m
Ontario
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$154
New YorkOntario
JFK New York John F Kennedy Intl - ONT Ontario
JFKONT
New York John F Kennedy Intl
Thu 10/15
7:10 am-5:12 pm
1 stop13h 02m
Ontario
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$154
New YorkOntario
JFK New York John F Kennedy Intl - ONT Ontario
JFKONT
New York John F Kennedy Intl
Wed 10/7
6:00 am-12:36 pm
1 stop9h 36m
Ontario
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$154
New YorkOntario
JFK New York John F Kennedy Intl - ONT Ontario
JFKONT
New York John F Kennedy Intl
Fri 11/20
6:48 pm-11:49 pm
1 stop8h 01m
Ontario
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$164
New YorkOntario
JFK New York John F Kennedy Intl - ONT Ontario
JFKONT
New York John F Kennedy Intl
Fri 10/16
4:23 pm-11:42 pm
1 stop10h 19m
Ontario
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$191
New YorkOntario
JFK New York John F Kennedy Intl - ONT Ontario
JFKONT
New York John F Kennedy Intl
Mon 10/5
8:25 pm-10:17 am
1 stop16h 52m
Ontario
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$196
New YorkOntario
JFK New York John F Kennedy Intl - ONT Ontario
JFKONT
New York John F Kennedy Intl
Sat 9/12
7:25 am-2:16 pm
1 stop9h 51m
Ontario
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$209
New YorkOntario
JFK New York John F Kennedy Intl - ONT Ontario
JFKONT
New York John F Kennedy Intl
Mon 11/23
7:00 am-3:05 pm
1 stop11h 05m
Ontario
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$209
New YorkOntario
JFK New York John F Kennedy Intl - ONT Ontario
JFKONT
New York John F Kennedy Intl
Tue 10/6
6:00 am-11:06 am
1 stop8h 06m
Ontario
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$229
Showing 1-10 of 22 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 September.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*1 star | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*3 stars | |
| Price Accuracy1 star | 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?
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 21 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, October is the cheapest month in which you can book a flight from New York John F Kennedy Intl Airport to Ontario (average of $287). Flying from New York John F Kennedy Intl Airport to Ontario in December is currently the most expensive (average of $696). 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.
What is the cheapest time of day to fly from JFK to ONT?
Find hourly flight availability from John F Kennedy Intl to Ontario. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 8, 2026.
When flying from New York John F Kennedy Intl Airport to Ontario, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.
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 September 8, 2026.
Read through reviews of airlines operating flights from New York John F Kennedy Intl Airport to Ontario, such as Delta,American Airlines, andJetBlue. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Comfort
7.8
Crew
8.5
Entertainment
7.8
Food
7.2
Overall
7.8
Boarding
8.1
Reviews
1 / 20
2.0
MediocreBarney,May 2026
JFK - ATL
Comfort
7.8
Crew
8.5
Entertainment
7.8
Food
7.2
Overall
7.8
Boarding
8.1
Reviews
1 / 20
2.0
MediocreBarney,May 2026
JFK - ATL
Comfort
7.8
Crew
8.5
Entertainment
7.8
Food
7.2
Overall
7.8
Boarding
8.1
Reviews
1 / 20
2.0
MediocreBarney,May 2026
JFK - ATL
Comfort
7.8
Crew
8.5
Entertainment
7.8
Food
7.2
Overall
7.8
Boarding
8.1
Reviews
1 / 20
2.0
MediocreBarney,May 2026
JFK - ATL
Comfort
7.8
Crew
8.5
Entertainment
7.8
Food
7.2
Overall
7.8
Boarding
8.1
Reviews
1 / 20
2.0
MediocreBarney,May 2026
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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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 7,457,451 searches. Data last updated September 8, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$88 | Average$287 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$128 | Average$299 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$238 | Average$355 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$262 | Average$467 | FlexibilityNo cancel fee | On-time71% |