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$115+ 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 3/31. Fares are subject to change and may not be available on all flights or dates of travel.
JFK — ONT
Feb 14 — Feb 211
Sat 2/14
Sat 2/21
1 adult, Economy
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Find cheap flights from John F Kennedy Intl to Ontario with Cheapflights

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Cheapflights Tip: The best prices from New York John F Kennedy Intl to Ontario are usually found in January or March, 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

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 January 15, 2026.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$240
(Trip.com)

One-way from

$115
(Kiwi.com)

Popular in

December

Cheapest in

January

Average price

$251

Good round-trip deal

$367 or less
Provider with most accurate pricing for New York John F Kennedy Intl-Ontario flight deals.
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Provider most trusted by Cheapflights users for New York John F Kennedy Intl-Ontario flights.
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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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Highest demand for flights based on searches. 17% potential increase in price ($77 potential increase over avg. RT price).
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Cheapest flight prices on average. 7% potential price decrease ($27 potential savings vs. average RT price).
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Average for round-trip flights in January 2026
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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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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 January 15, 2026.

This Trip.com deal was found by Cheapflights users on 1/13. 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 2/195:00 pm
JFK
-
ONT
1 stop9h 52m
Hawaiian Airlines
Wed 2/254:02 pm
ONT
-
JFK
1 stop12h 03m
Hawaiian Airlines
Deal found 1/13$240
This Alaska Airlines deal was found by Cheapflights users on 1/13. 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 2/247:00 am
JFK
-
ONT
1 stop11h 08m
Alaska Airlines
Tue 3/36:14 am
ONT
-
JFK
1 stop9h 56m
Alaska Airlines
Deal found 1/13$251
This Alaska Airlines deal was found by Cheapflights users on 1/13. 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 2/205:00 pm
JFK
-
ONT
1 stop9h 52m
Alaska Airlines
Wed 2/254:02 pm
ONT
-
JFK
1 stop12h 03m
Alaska Airlines
Deal found 1/13$254
This Alaska Airlines deal was found by Cheapflights users on 1/14. 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 2/247:00 am
JFK
-
ONT
1 stop11h 08m
Alaska Airlines
Tue 3/104:02 pm
ONT
-
JFK
1 stop12h 03m
Alaska Airlines
Deal found 1/14$257
This American Airlines deal was found by Cheapflights users on 1/13. 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 2/117:55 am
JFK
-
ONT
1 stop9h 23m
American Airlines
Sun 2/1511:58 pm
ONT
-
JFK
1 stop8h 33m
American Airlines
Deal found 1/13$259
This American Airlines deal was found by Cheapflights users on 1/14. 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.
Mon 2/2312:29 pm
JFK
-
ONT
1 stop8h 46m
American Airlines
Sat 2/2811:58 pm
ONT
-
JFK
1 stop8h 33m
American Airlines
Deal found 1/14$262
This American Airlines deal was found by Cheapflights users on 1/14. 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 2/205:21 pm
JFK
-
ONT
1 stop7h 46m
American Airlines
Sat 2/2812:26 pm
ONT
-
JFK
1 stop7h 33m
American Airlines
Deal found 1/14$263
This Expedia deal was found by Cheapflights users on 1/13. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/24:22 pm
JFK
-
ONT
1 stop10h 34m
Alaska Airlines
Sat 2/77:00 am
ONT
-
JFK
1 stop29h 18m
Alaska Airlines
Deal found 1/13$267

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 January 15, 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

John F Kennedy Intl

Fly to

Ontario

Route

Depart

Return

Price

New YorkOntario

JFK - ONT

JFKONT

New York John F Kennedy Intl

Wed 2/25

5:00 pm-11:52 pm

1 stop9h 52m

Ontario

Tue 3/10

4:02 pm-7:05 am

1 stop12h 03m

$254

New YorkOntario

JFK - ONT

JFKONT

New York John F Kennedy Intl

Fri 2/27

5:00 pm-11:52 pm

1 stop9h 52m

Ontario

Tue 3/10

4:02 pm-7:05 am

1 stop12h 03m

$257

New YorkOntario

JFK - ONT

JFKONT

New York John F Kennedy Intl

Thu 2/5

4:22 pm-11:56 pm

1 stop10h 34m

Ontario

Sun 2/8

7:00 am-3:18 pm

1 stop29h 18m

$257

New YorkOntario

JFK - ONT

JFKONT

New York John F Kennedy Intl

Wed 2/25

5:00 pm-11:52 pm

1 stop9h 52m

Ontario

Tue 3/3

6:14 am-7:10 pm

1 stop9h 56m

$257

New YorkOntario

JFK - ONT

JFKONT

New York John F Kennedy Intl

Fri 2/27

6:00 am-12:02 pm

1 stop9h 02m

Ontario

Mon 3/9

5:53 pm-7:15 am

1 stop10h 22m

$277

New YorkOntario

JFK - ONT

JFKONT

New York John F Kennedy Intl

Wed 2/18

6:00 am-12:07 pm

1 stop9h 07m

Ontario

Mon 2/23

10:20 pm-11:15 am

1 stop9h 55m

$277

New YorkOntario

JFK - ONT

JFKONT

New York John F Kennedy Intl

Tue 6/16

10:10 am-6:15 pm

1 stop11h 05m

Ontario

Mon 6/22

5:05 pm-6:17 am

1 stop10h 12m

$277

New YorkOntario

JFK - ONT

JFKONT

New York John F Kennedy Intl

Wed 4/29

7:45 am-5:15 pm

1 stop12h 30m

Ontario

Tue 5/5

11:53 am-12:20 am

1 stop9h 27m

$278

New YorkOntario

JFK - ONT

JFKONT

New York John F Kennedy Intl

Thu 1/29

4:22 pm-11:56 pm

1 stop10h 34m

Ontario

Sat 1/31

5:59 pm-3:18 pm

1 stop18h 19m

$283

New YorkOntario

JFK - ONT

JFKONT

New York John F Kennedy Intl

Wed 5/27

4:54 pm-11:58 pm

1 stop10h 04m

Ontario

Wed 6/3

6:00 am-7:29 pm

1 stop10h 29m

$292

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/15

Showing 1-10 of 23 results
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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 January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
CheapOairPrice Accuracy3 starsTrust Score*3 stars
GotogatePrice Accuracy3 starsTrust Score*3 stars
CheapTicketsDealPrice Accuracy3 starsTrust Score*3 stars
MytripPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust Score*3 stars
Kiwi.comPrice Accuracy3 starsTrust Score*3 stars
CheapfaremartPrice Accuracy-Trust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on New York John F Kennedy Intl Airport-Ontario flights, users find the pricing of CheapOair to be most consistent on Cheapflights vs. CheapOair Users can find the same prices on New York John F Kennedy Intl Airport-Ontario flight deals on Cheapflights vs. CheapOair >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 CheapOair the most. CheapOair 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.
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 January 9, 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, March is the cheapest month in which you can book a flight from New York John F Kennedy Intl Airport to Ontario (average of $97). Flying from New York John F Kennedy Intl Airport to Ontario in July is currently the most expensive (average of $178). 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 January 15, 2026.
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
7.9
Good
8,049 reviews

Crew

8.5

Food

7.2

Boarding

8.1

Entertainment

7.8

Comfort

7.9

Overall

7.9

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
7.9
Good
8,049 reviews
Delta
7.9
Good
8,049 reviews

Crew

8.5

Food

7.2

Boarding

8.1

Entertainment

7.8

Comfort

7.9

Overall

7.9

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
11,132 reviews
Delta
7.9
Good
8,049 reviews

Crew

8.5

Food

7.2

Boarding

8.1

Entertainment

7.8

Comfort

7.9

Overall

7.9

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
2,887 reviews
Delta
7.9
Good
8,049 reviews

Crew

8.5

Food

7.2

Boarding

8.1

Entertainment

7.8

Comfort

7.9

Overall

7.9

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
5.7
Fair
3,057 reviews
Delta
7.9
Good
8,049 reviews

Crew

8.5

Food

7.2

Boarding

8.1

Entertainment

7.8

Comfort

7.9

Overall

7.9

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 0 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 9h 02m. 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 Delta and JetBlue, starting at $148 and $238 round-trip. These flights start at 71% lower than the current average price 3 months from now.

  • What are the cheapest airlines to fly from New York John F Kennedy Intl Airport to Ontario one-way?

    For one-way options, check prices for Frontier. According to our data, you can fly for as low as $70. Users have also found prices from $128 and $128 on Delta and JetBlue, respectively.

  • 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 $652, our data indicates the cheapest price to be $247. The most popular route (New York John F Kennedy Intl - Ontario), is priced around $242.

  • 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, March is the cheapest month in which you can book a flight from New York John F Kennedy Intl Airport to Ontario (average of $97). Flying from New York John F Kennedy Intl Airport to Ontario in July is currently the most expensive (average of $178). 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 January 15, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$102Average$213FlexibilityNo cancel feeOn-time62%
DeltaCheapest$148Average$281FlexibilityNo cancel feeOn-timeN/A
JetBlueCheapest$238Average$335FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$248Average$464FlexibilityNo cancel feeOn-time71%

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