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$122+ 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 12/3. Fares are subject to change and may not be available on all flights or dates of travel.
JFK — ONT
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheapflights Tip: The best prices from New York John F Kennedy Intl to Ontario are usually found in March or January, booked 28 days in advance, depart on a Friday or Monday and return on a Friday

Cheap 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 11, 2025.

Round-trip from

$188
(CheapOair)

One-way from

$122
(Trip.com)

Popular in

February

Cheapest in

March

Average price

$297

Good round-trip deal

$260 or less

Good one-way deal

$143 or less
From New York John F Kennedy Intl to Ontario
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One-way flight from New York John F Kennedy Intl to Ontario
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High demand for flights, 4% potential price rise
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Cheapest flight prices on average. 4% potential price decrease ($17 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Price to beat on a round-trip flight from New York John F Kennedy Intl to Ontario.
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Price to beat on a one-way flight from New York John F Kennedy Intl to Ontario.
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Find flight deals from John F Kennedy Intl to Ontario

Cheapest flights from John F Kennedy Intl to Ontario
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 11, 2025.

This CheapOair deal was found by Cheapflights users on 9/10. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/16:59 amJFK - ONT
1 stop17h 57mFrontier
Sun 10/57:15 pmONT - JFK
1 stop13h 13mFrontier
Deal found 9/10$188
This Booking.com deal was found by Cheapflights users on 9/10. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/71:08 pmJFK - ONT
1 stop8h 20mFrontier
Tue 11/118:00 amONT - JFK
1 stop19h 30mFrontier
Deal found 9/10$190
This Kiwi.com deal was found by Cheapflights users on 9/10. 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 10/81:00 pmJFK - ONT
1 stop13h 50mFrontier
Tue 10/147:04 amONT - JFK
1 stop25h 57mFrontier
Deal found 9/10$193
This Mytrip deal was found by Cheapflights users on 9/10. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/256:59 amJFK - ONT
1 stop7h 39mFrontier
Thu 10/26:00 amONT - JFK
1 stop20h 30mFrontier
Deal found 9/10$198
This Mytrip deal was found by Cheapflights users on 9/10. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/256:59 amJFK - ONT
1 stop7h 39mFrontier
Wed 10/18:00 amONT - JFK
1 stop18h 30mFrontier
Deal found 9/10$199
This Booking.com deal was found by Cheapflights users on 9/10. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/176:59 amJFK - ONT
1 stop17h 57mFrontier
Mon 9/2210:28 pmONT - JFK
1 stop28h 02mFrontier
Deal found 9/10$200
This Mytrip deal was found by Cheapflights users on 9/11. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/226:59 amJFK - ONT
1 stop10h 01mFrontier
Wed 9/248:00 amONT - JFK
1 stop18h 30mFrontier
Deal found 9/11$204
This CheapOair deal was found by Cheapflights users on 9/10. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/206:59 amJFK - ONT
1 stop8h 44mFrontier
Sun 9/287:15 pmONT - JFK
1 stop13h 13mFrontier
Deal found 9/10$208
This Frontier deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/87:59 amJFK - ONT
1 stop7h 38mFrontier
Fri 11/147:44 pmONT - JFK
1 stop7h 46mFrontier
Deal found 9/10$209
This Booking.com deal was found by Cheapflights users on 9/11. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/17:59 amJFK - ONT
1 stop7h 38mFrontier
Fri 11/77:23 pmONT - JFK
1 stop13h 36mFrontier
Deal found 9/11$213
This Trip.com deal was found by Cheapflights users on 9/10. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/71:08 pmJFK - ONT
1 stop8h 20mFrontier
Sun 11/96:53 amONT - JFK
1 stop29h 07mFrontier
Deal found 9/10$214
This Booking.com deal was found by Cheapflights users on 9/10. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/46:59 amJFK - ONT
1 stop8h 44mFrontier
Sat 10/111:37 pmONT - JFK
1 stop12h 53mFrontier
Deal found 9/10$216

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 September 11, 2025.
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

John F Kennedy Intl

Fly to

Ontario

Route

Depart

Return

Price

New YorkOntario

JFK - ONT

JFKONT

New York John F Kennedy Intl

Fri 10/24

6:59 am-11:47 am

1 stop7h 48m

Ontario

Mon 10/27

10:47 pm-6:30 am

1 stop28h 43m

$218

New YorkOntario

JFK - ONT

JFKONT

New York John F Kennedy Intl

Thu 9/25

6:59 am-8:56 pm

1 stop16h 57m

Ontario

Sat 9/27

8:00 am-5:30 am

1 stop18h 30m

$218

New YorkOntario

JFK - ONT

JFKONT

New York John F Kennedy Intl

Thu 10/23

6:59 am-9:55 pm

1 stop17h 56m

Ontario

Mon 10/27

10:47 pm-6:30 am

1 stop28h 43m

$218

New YorkOntario

JFK - ONT

JFKONT

New York John F Kennedy Intl

Fri 10/24

6:59 am-10:05 pm

1 stop18h 06m

Ontario

Tue 10/28

8:00 am-6:30 am

1 stop19h 30m

$220

New YorkOntario

JFK - ONT

JFKONT

New York John F Kennedy Intl

Fri 9/26

6:35 pm-9:29 pm

Nonstop5h 54m

Ontario

Sun 9/28

10:56 pm-7:18 am

Nonstop5h 22m

$234

New YorkOntario

JFK - ONT

JFKONT

New York John F Kennedy Intl

Fri 9/26

6:35 pm-9:29 pm

Nonstop5h 54m

Ontario

Tue 9/30

10:56 pm-7:18 am

Nonstop5h 22m

$237

New YorkOntario

JFK - ONT

JFKONT

New York John F Kennedy Intl

Sat 10/4

6:35 pm-9:29 pm

Nonstop5h 54m

Ontario

Sat 10/11

10:56 pm-7:18 am

Nonstop5h 22m

$238

New YorkOntario

JFK - ONT

JFKONT

New York John F Kennedy Intl

Thu 9/25

12:30 pm-11:28 am

1 stop25h 58m

Ontario

Sun 9/28

7:15 pm-11:28 am

1 stop13h 13m

$241

New YorkOntario

JFK - ONT

JFKONT

New York John F Kennedy Intl

Wed 10/1

6:35 pm-9:29 pm

Nonstop5h 54m

Ontario

Mon 10/6

10:56 pm-7:18 am

Nonstop5h 22m

$252

New YorkOntario

JFK - ONT

JFKONT

New York John F Kennedy Intl

Tue 9/23

6:35 pm-9:29 pm

Nonstop5h 54m

Ontario

Tue 9/30

10:56 pm-7:18 am

Nonstop5h 22m

$254

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/11

Showing 1-10 of 24 results
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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.
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 August 29, 2025.

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, August is the cheapest month in which you can book a flight from New York John F Kennedy Intl Airport to Ontario (average of $246). Flying from New York John F Kennedy Intl Airport to Ontario in March is currently the most expensive (average of $328). 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 11, 2025.

When flying from New York John F Kennedy Intl Airport to Ontario, the time of day you fly usually plays a role in the price. Save by searching for a flight at noon, which can drop the price by up to 21% versus a flight in the morning.

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 September 11, 2025.
Read through reviews of airlines operating flights from New York John F Kennedy Intl Airport to Ontario, such as Delta, American Airlines, and JetBlue. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,960 reviews

Entertainment

7.9

Food

7.3

Boarding

8.2

Comfort

7.9

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kymberlee,Oct 2024

JFK - ATL

Overall it was good on the flight. Before the flight with checking the bag at JFK was a nightmare. It took way too long and the Delta concierge was very rude to everyone. But other than that it was fine.
Delta
8.0
Very good
7,960 reviews
Delta
8.0
Very good
7,960 reviews

Entertainment

7.9

Food

7.3

Boarding

8.2

Comfort

7.9

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kymberlee,Oct 2024

JFK - ATL

Overall it was good on the flight. Before the flight with checking the bag at JFK was a nightmare. It took way too long and the Delta concierge was very rude to everyone. But other than that it was fine.
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,960 reviews

Entertainment

7.9

Food

7.3

Boarding

8.2

Comfort

7.9

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kymberlee,Oct 2024

JFK - ATL

Overall it was good on the flight. Before the flight with checking the bag at JFK was a nightmare. It took way too long and the Delta concierge was very rude to everyone. But other than that it was fine.
JetBlue
7.2
Good
2,913 reviews
Delta
8.0
Very good
7,960 reviews

Entertainment

7.9

Food

7.3

Boarding

8.2

Comfort

7.9

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kymberlee,Oct 2024

JFK - ATL

Overall it was good on the flight. Before the flight with checking the bag at JFK was a nightmare. It took way too long and the Delta concierge was very rude to everyone. But other than that it was fine.
Frontier
5.8
Fair
3,177 reviews
Delta
8.0
Very good
7,960 reviews

Entertainment

7.9

Food

7.3

Boarding

8.2

Comfort

7.9

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kymberlee,Oct 2024

JFK - ATL

Overall it was good on the flight. Before the flight with checking the bag at JFK was a nightmare. It took way too long and the Delta concierge was very rude to everyone. But other than that it was fine.

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.

  • What airport do you fly into for flights to Ontario from New York John F Kennedy Intl?

    For a flight from New York John F Kennedy Intl to Ontario, you will be flying into Ontario. Ontario (ONT) is just 3.1 mi from the center of the city. Ontario is the only Ontario airport and it handles 2 inbound flights from New York John F Kennedy Intl per day. 4 airlines have flights to Ontario from New York John F Kennedy Intl on a regular basis.

  • How long is the flight from New York John F Kennedy Intl Airport to Ontario?

    Departing from New York John F Kennedy Intl Airport to Ontario will take you 5h 54m. The distance between New York John F Kennedy Intl Airport and Ontario is about 2422 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines flying from New York John F Kennedy Intl Airport to Ontario round-trip?

    Our cheapest airline available from New York John F Kennedy Intl Airport to Ontario is Frontier. Our recent data shows that you can find tickets from as low as $102 on this airline. Additional options worth looking into are JetBlue and American Airlines, starting at $226 and $228 round-trip. These flights start at 71% lower than the current average price 3 months from now.

  • What are the most reliable airlines from New York John F Kennedy Intl Airport to Ontario?

    Before booking your flight to Ontario from New York John F Kennedy Intl Airport, check out the most reliable airlines to get you to your destination on time: JetBlue (53%), Etihad Airways (51%), Air Serbia( 46%).

  • What are the cheapest flights from New York John F Kennedy Intl Airport to Ontario?

    Looking for the cheapest flight from New York John F Kennedy Intl Airport to Ontario? While on average our users pay $245, our data indicates the cheapest price to be $116. The most popular route (New York John F Kennedy Intl - Ontario), is priced around $198.

  • Can I find deals for flights from John F Kennedy Intl to Ontario that include hotel bookings?

    Yes. In addition to deals on John F Kennedy Intl to Ontario flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from John F Kennedy Intl to Ontario?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from John F Kennedy Intl to Ontario.

  • Can I find deals for business class flights from John F Kennedy Intl to Ontario?

    Yes. Cheapflights offers flight deals from John F Kennedy Intl to Ontario by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from New York John F Kennedy Intl Airport to Ontario?

    Currently, August is the cheapest month in which you can book a flight from New York John F Kennedy Intl Airport to Ontario (average of $246). Flying from New York John F Kennedy Intl Airport to Ontario in March is currently the most expensive (average of $328). 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.

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Alternative routes for John F Kennedy Intl to Ontario

See prices for flight routes from nearby airports that may be better suited for you.
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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 September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$102Average$242FlexibilityNo cancel feeOn-time62%
JetBlueCheapest$226Average$333FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$228Average$403FlexibilityNo cancel feeOn-time71%
DeltaCheapest$260Average$418FlexibilityNo cancel feeOn-timeN/A

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