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$100+ 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 1/23. Fares are subject to change and may not be available on all flights or dates of travel.
JFK — ONT
nov. 27 — dic. 41
jue. 11/27
jue. 12/4
1 adult, Economy
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1. Tell us where you want to go

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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 Wednesday and return on a Saturday

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 octubre 28, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$237
(Kiwi.com)

One-way from

$100
(Kiwi.com)

Popular in

February

Cheapest in

March

Average price

$402

Good round-trip deal

$367 or less

Good one-way deal

$198 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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High demand for flights, 6% potential price rise
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Cheapest flight prices on average. 4% potential price decrease ($16 potential savings vs. average RT price).
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Average for round-trip flights in October 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 octubre 28, 2025.

This Kiwi.com deal was found by Cheapflights users on 10/26. 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.
lun. 11/107:59 amJFK - ONT
1 stop16h 58mMultiple Airlines
vie. 11/146:00 amONT - JFK
1 stop10h 29mMultiple Airlines
Deal found 10/26$237
This Kiwi.com deal was found by Cheapflights users on 10/28. 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.
sáb. 11/157:59 amJFK - ONT
1 stop7h 38mFrontier
vie. 11/285:06 pmONT - JFK
1 stop9h 55mFrontier
Deal found 10/28$240
This Kiwi.com deal was found by Cheapflights users on 10/26. 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.
mié. 11/124:00 pmJFK - ONT
1 stop8h 29mFrontier
lun. 12/16:12 pmONT - JFK
1 stop13h 13mFrontier
Deal found 10/26$241
This CheapOair deal was found by Cheapflights users on 10/27. 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.
mié. 12/176:59 amJFK - ONT
1 stop17h 18mFrontier
jue. 1/83:26 pmONT - JFK
1 stop11h 04mFrontier
Deal found 10/27$242
This CheapOair deal was found by Cheapflights users on 10/27. 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.
lun. 11/177:59 amJFK - ONT
1 stop16h 58mFrontier
vie. 11/216:25 amONT - JFK
1 stop20h 36mFrontier
Deal found 10/27$243
This Kiwi.com deal was found by Cheapflights users on 10/27. 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.
lun. 11/247:30 amJFK - ONT
1 stop16h 36mFrontier
jue. 11/273:31 pmONT - JFK
1 stop11h 30mFrontier
Deal found 10/27$244
This Booking.com deal was found by Cheapflights users on 10/25. 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.
lun. 11/177:59 amJFK - ONT
1 stop16h 58mFrontier
sáb. 11/2212:58 amONT - JFK
1 stop8h 08mFrontier
Deal found 10/25$245
This CheapOair deal was found by Cheapflights users on 10/26. 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.
vie. 12/124:29 pmJFK - ONT
1 stop24h 56mFrontier
lun. 12/156:15 amONT - JFK
1 stop20h 15mFrontier
Deal found 10/26$246
This Kiwi.com deal was found by Cheapflights users on 10/26. 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.
sáb. 11/157:59 amJFK - ONT
1 stop7h 38mFrontier
sáb. 12/63:20 pmONT - JFK
2 stops16h 05mFrontier
Deal found 10/26$247
This Booking.com deal was found by Cheapflights users on 10/26. 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.
vie. 12/56:59 amJFK - ONT
1 stop9h 11mFrontier
sáb. 12/66:15 amONT - JFK
1 stop20h 15mFrontier
Deal found 10/26$248
This American Airlines deal was found by Cheapflights users on 10/26. 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.
mar. 11/186:30 amJFK - ONT
1 stop8h 33mAmerican Airlines
mar. 1/1312:57 pmONT - JFK
1 stop7h 02mAmerican Airlines
Deal found 10/26$249
This Kiwi.com deal was found by Cheapflights users on 10/26. 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.
sáb. 11/157:59 amJFK - ONT
1 stop7h 38mFrontier
jue. 12/46:15 amONT - JFK
2 stops15h 44mFrontier
Deal found 10/26$250

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 octubre 28, 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

mar. 2/24

4:00 pm-10:37 pm

1 stop9h 37m

Ontario

mié. 3/4

6:00 am-7:29 pm

1 stop10h 29m

$250

New YorkOntario

JFK - ONT

JFKONT

New York John F Kennedy Intl

mié. 2/25

4:00 pm-10:37 pm

1 stop9h 37m

Ontario

mié. 3/4

6:55 pm-7:54 am

1 stop9h 59m

$250

New YorkOntario

JFK - ONT

JFKONT

New York John F Kennedy Intl

mié. 2/25

11:30 am-6:17 pm

1 stop9h 47m

Ontario

dom. 3/1

6:00 am-7:29 pm

1 stop10h 29m

$253

New YorkOntario

JFK - ONT

JFKONT

New York John F Kennedy Intl

mié. 2/18

4:00 pm-10:37 pm

1 stop9h 37m

Ontario

jue. 2/26

6:55 pm-7:54 am

1 stop9h 59m

$253

New YorkOntario

JFK - ONT

JFKONT

New York John F Kennedy Intl

lun. 2/23

4:00 pm-10:37 pm

1 stop9h 37m

Ontario

mié. 3/4

6:55 pm-7:54 am

1 stop9h 59m

$253

New YorkOntario

JFK - ONT

JFKONT

New York John F Kennedy Intl

lun. 2/23

4:00 pm-10:37 pm

1 stop9h 37m

Ontario

sáb. 3/7

6:00 am-7:29 pm

1 stop10h 29m

$256

New YorkOntario

JFK - ONT

JFKONT

New York John F Kennedy Intl

vie. 1/23

7:00 am-3:08 pm

1 stop11h 08m

Ontario

lun. 1/26

6:00 am-7:28 pm

1 stop10h 28m

$256

New YorkOntario

JFK - ONT

JFKONT

New York John F Kennedy Intl

jue. 1/22

4:22 pm-11:56 pm

1 stop10h 34m

Ontario

dom. 1/25

6:00 am-7:28 pm

1 stop10h 28m

$256

New YorkOntario

JFK - ONT

JFKONT

New York John F Kennedy Intl

lun. 2/23

4:00 pm-10:37 pm

1 stop9h 37m

Ontario

mar. 3/10

6:00 am-7:29 pm

1 stop10h 29m

$256

New YorkOntario

JFK - ONT

JFKONT

New York John F Kennedy Intl

jue. 1/22

4:22 pm-11:56 pm

1 stop10h 34m

Ontario

lun. 1/26

6:00 am-7:28 pm

1 stop10h 28m

$256

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/26

Showing 1-10 of 21 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 October.
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
MytripPrice Accuracy3 starsTrust Score*3 stars
CheapTicketsDealPrice Accuracy3 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy3 starsTrust Score*2 stars
PricelinePrice Accuracy1 starTrust Score*3 stars
Kiwi.comPrice Accuracy3 starsTrust Score*3 stars

*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 October 24, 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, 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 December is currently the most expensive (average of $198). 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 octubre 28, 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 20% versus a flight in the morning.

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 octubre 28, 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
7.9
Good
7,995 reviews

Boarding

8.2

Overall

7.9

Comfort

7.9

Food

7.3

Entertainment

7.9

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
7.9
Good
7,995 reviews
Delta
7.9
Good
7,995 reviews

Boarding

8.2

Overall

7.9

Comfort

7.9

Food

7.3

Entertainment

7.9

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
11,033 reviews
Delta
7.9
Good
7,995 reviews

Boarding

8.2

Overall

7.9

Comfort

7.9

Food

7.3

Entertainment

7.9

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
2,907 reviews
Delta
7.9
Good
7,995 reviews

Boarding

8.2

Overall

7.9

Comfort

7.9

Food

7.3

Entertainment

7.9

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
3,122 reviews
Delta
7.9
Good
7,995 reviews

Boarding

8.2

Overall

7.9

Comfort

7.9

Food

7.3

Entertainment

7.9

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 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 37m. The distance between New York John F Kennedy Intl Airport and Ontario is about 2422 mi.

  • 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 American Airlines and JetBlue, starting at $248 and $250 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: Air Serbia (71%), Etihad Airways (58%), JetBlue( 58%).

  • 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 $458, our data indicates the cheapest price to be $143. The most popular route (New York John F Kennedy Intl - Ontario), is priced around $130.

  • 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 December is currently the most expensive (average of $198). 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 octubre 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$102Average$227FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$248Average$422FlexibilityNo cancel feeOn-time71%
JetBlueCheapest$250Average$337FlexibilityNo cancel feeOn-time62%
DeltaCheapest$260Average$418FlexibilityNo cancel feeOn-timeN/A

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