JFK - ONT

$135 Find Cheap Flights from New York John F Kennedy Airport to Ontario

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from John F Kennedy Intl to Ontario departing on 4/28. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Ontario

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from New York to Ontario, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from New York to Ontario, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$257
Typical prices: $475-$290
American Airlines
Fri 4/17Tue 4/21
JFK - ONT • 1 stop
Cheapest non-stop
$283
Typical prices: $362-$297
JetBlue
Tue 6/2Tue 6/9
JFK - ONT • Non-stop
Advice from real travelers
AI-powered summary based on content written by travel experts. AI can make mistakes.
Have your driver drop you off at Lefferts Blvd AirTrain.
Use the Metrolink San Bernardino Line to reach ONT.
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Top airlines
Cheapest • from $257 (round-trip)
Best reviews • 7.9 score
Airline reviews
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Nonstop flights
You can fly direct with JetBlue. Average duration is 0
Direct flights
Direct flights
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Direct flights
Direct flights
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Top layover airports
Cheapest • Avg $276 (round-trip)
Shortest trip • 8h 20m (one-way)
Insights
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When to book
in advance
Our data shows that travelers who book at least 2 weeks in advance save around 30% compared to booking last minute.
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When to travel
Cheapest • 23% price drop
Most popular
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Flight Deals

Cheap Flights from John F Kennedy Intl to Ontario (JFK-ONT)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from John F Kennedy Intl to Ontario that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from John F Kennedy Intl to Ontario

Fri, Apr 17 - Tue, Apr 21
American Airlines Logo
5:20 pm - 10:36 pm
JFK
-
ONT
8h 16m
1 stop
American Airlines Logo
11:59 pm - 1:28 pm
ONT
-
JFK
10h 29m
1 stop
$257American Airlines
Tue, Apr 14 - Sat, Apr 18
American Airlines Logo
11:00 am - 6:24 pm
JFK
-
ONT
10h 24m
2 stops
American Airlines Logo
11:59 pm - 11:34 am
ONT
-
JFK
8h 35m
1 stop
$262American Airlines
Tue, Apr 14 - Sat, Apr 18
American Airlines Logo
7:58 am - 4:22 pm
JFK
-
ONT
11h 24m
2 stops
American Airlines Logo
6:15 am - 6:40 pm
ONT
-
JFK
9h 25m
2 stops
$267American Airlines
Sat, Apr 25 - Sat, May 2
American Airlines Logo
6:35 am - 11:34 am
JFK
-
ONT
7h 59m
1 stop
American Airlines Logo
6:15 am - 8:05 pm
ONT
-
JFK
10h 50m
2 stops
$268American Airlines
Wed, Apr 22 - Wed, Apr 22
American Airlines Logo
6:35 am - 11:34 am
JFK
-
ONT
7h 59m
1 stop
American Airlines Logo
11:59 pm - 11:34 am
ONT
-
JFK
8h 35m
1 stop
$271American Airlines
Sat, Apr 25 - Sat, May 2
American Airlines Logo
11:00 am - 7:34 pm
JFK
-
ONT
11h 34m
2 stops
American Airlines Logo
6:15 am - 8:05 pm
ONT
-
JFK
10h 50m
2 stops
$273American Airlines
Thu, Apr 30 - Thu, May 7
American Airlines Logo
5:20 pm - 11:46 pm
JFK
-
ONT
9h 26m
1 stop
American Airlines Logo
9:24 am - 9:00 pm
ONT
-
JFK
8h 36m
1 stop
$276American Airlines
Tue, Apr 14 - Fri, Apr 17
Delta Logo
7:45 am - 5:15 pm
JFK
-
ONT
12h 30m
1 stop
Delta Logo
12:49 pm - 12:48 am
ONT
-
JFK
8h 59m
1 stop
$278Delta
Sat, Apr 18 - Sat, Apr 25
Delta Logo
2:55 pm - 9:00 pm
JFK
-
ONT
9h 05m
1 stop
Delta Logo
10:15 pm - 10:15 am
ONT
-
JFK
9h 00m
1 stop
$280Delta
Sat, Apr 18 - Sat, Apr 25
Delta Logo
2:55 pm - 9:00 pm
JFK
-
ONT
9h 05m
1 stop
Delta Logo
10:15 pm - 10:15 am
ONT
-
JFK
9h 00m
1 stop
$281Delta
Booking Insights

KAYAK's insights & trends for John F Kennedy Intl to Ontario flights

Get data-powered insights and trends into flights from John F Kennedy Intl to Ontario to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from New York John F Kennedy Intl Airport to Ontario?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from New York John F Kennedy Intl Airport to Ontario departing in April.

What’s the cheapest day of the week to fly from New York John F Kennedy Airport to Ontario?

The average price of all round-trip flights from New York John F Kennedy Intl Airport to Ontario clicked on KAYAK for each day over the last 12 months.

When flying from New York John F Kennedy Airport to Ontario, you should consider leaving on a Friday and avoid Mondays if you are looking for the best rates. For your return to New York John F Kennedy Airport, you’ll find the best rates on Saturdays and the most expensive ones on Thursdays.

What is the cheapest month to fly from New York John F Kennedy Intl Airport to Ontario?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from New York John F Kennedy Intl Airport to Ontario, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from New York John F Kennedy Intl Airport to Ontario is January, where tickets cost $282 (return) on average. On the other hand, the most expensive months are December and March, where the average cost of round-trip tickets is $654 and $448 respectively.

Can I save money by flying with a layover from New York John F Kennedy Intl Airport to Ontario?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

No, with an average price for the route of $387, prices are generally cheapest when you fly direct.

How far in advance should I book a flight from New York John F Kennedy Intl Airport to Ontario?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from New York John F Kennedy Intl Airport to Ontario, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from New York John F Kennedy Intl Airport to Ontario, you should book around 2 weeks before departure, which saves you about 30% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 14 weeks before departure.

Expert advice

Expert advice for your flight from John F Kennedy Intl to Ontario

 
AI-powered summary based on content written by travel experts. AI can make mistakes.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
Jennifer Simonson

Jennifer Simonson

Expert on ONT

Jennifer Simonson is driven by her lifelong commitment to exploring the globe. Her insatiable curiosity had led her to immerse herself into diverse locations like Oklahoma City and Pismo. Her hotel recommendations are the result of the myriad hotels she's stayed at across her travels. Along her journey, she cherishes engaging conversations with locals, indulging in the finest ice cream, trying her hand at surfing, and embarking on nature-filled hikes.

Harriet Baskas

Harriet Baskas

Expert on JFK

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Good to know

Low seasonJanuary
Cheapest flight$135
Best time to beat the crowds with an average 23% drop in price.
Most popular time to fly and prices are also 19% lower on average.
Flight from New York John F Kennedy Airport to Ontario

When to book flights from John F Kennedy Intl to Ontario

Are your dates flexible? Find out the best times to travel from John F Kennedy Intl to Ontario based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking New York John F Kennedy Airport to Ontario flights

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

    In the last 3 days, the lowest price for a flight from New York John F Kennedy Intl Airport to Ontario was $135 for a one-way ticket and $257 for a round-trip.

  • Do I need a passport to fly between New York John F Kennedy Airport and Ontario?

    No

  • Which airlines offer Wi-Fi service onboard planes from New York John F Kennedy Airport to Ontario?

    JetBlue, Alaska Airlines, Hawaiian Airlines, American Airlines, and Delta offer inflight Wi-Fi service on the New York John F Kennedy Airport to Ontario flight route.

  • Which aircraft models fly most regularly from New York John F Kennedy Airport to Ontario?

    The Airbus A321-100/200 is the aircraft model that flies most regularly on the New York John F Kennedy Airport to Ontario flight route.

  • Which airline alliances offer flights from New York John F Kennedy Airport to Ontario?

    SkyTeam, and oneworld are the airline alliances operating flights between New York John F Kennedy Airport and Ontario, with SkyTeam being the most commonly used for this route.

  • Which is the best airline for flights from New York to Ontario, Delta or JetBlue?

    The two airlines most popular with KAYAK users for flights from New York to Ontario are Delta and JetBlue. With an average price for the route of $390 and an overall rating of 7.9, Delta is the most popular choice. JetBlue is also a great choice for the route, with an average price of $338 and an overall rating of 7.2.

  • How does KAYAK find such low prices on flights from New York John F Kennedy Airport to Ontario?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from New York John F Kennedy Airport to Ontario.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from New York John F Kennedy Airport to Ontario?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Ontario from New York John F Kennedy Airport is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from New York John F Kennedy Airport to Ontario?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Ontario with an airline and back to New York John F Kennedy Airport with another airline. Booking your flights between New York John F Kennedy Airport and ONT can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from New York John F Kennedy Airport to Ontario?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Ontario from New York John F Kennedy Airport up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from New York John F Kennedy Intl Airport to Ontario

  • Looking for a cheap flight? 25% of our users found flights on this route for $163 or less one-way and $294 or less round-trip.

Prefer to fly direct from New York John F Kennedy Airport to Ontario?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from New York John F Kennedy Intl to Ontario.
Find which airlines fly direct from New York John F Kennedy Intl Airport to Ontario Airport, which days they fly and book direct flights.

Direct departures

New York John F Kennedy Intl to Ontario

Monday

JetBlue

JetBlue

Tuesday

JetBlue

JetBlue

Wednesday

JetBlue

JetBlue

Thursday

JetBlue

JetBlue

Friday

JetBlue

JetBlue

Saturday

JetBlue

JetBlue

Sunday

JetBlue

JetBlue

See more direct flights

Direct returns

Ontario to New York John F Kennedy Intl

Monday

JetBlue

JetBlue

Tuesday

JetBlue

JetBlue

Wednesday

JetBlue

JetBlue

Thursday

JetBlue

JetBlue

Friday

JetBlue

JetBlue

Saturday

JetBlue

JetBlue

Sunday

JetBlue

JetBlue

See more direct flights

Reviews of the top 4 airlines serving from John F Kennedy Intl to Ontario

 
See real verified KAYAK customer reviews for airlines flying from New York to Ontario. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from John F Kennedy Intl to Ontario? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.9
DeltaOverall score based on 8359 reviews
8.5Crew
7.9Comfort
7.8Entertainment
7.2Food
8.1Boarding
Airline reviews

Excellent service, I love the soft blush pink mood lighting on the 767-400ER during meal service. The overhead gasper vents on the 767-400ER were also very strong with a lot of airflow to keep me comfortable on my flight.

10.0 ExcellentChristopher, Mar 2026
JFK - MXP
Read more Delta reviews

Excellent service, I love the soft blush pink mood lighting on the 767-400ER during meal service. The overhead gasper vents on the 767-400ER were also very strong with a lot of airflow to keep me comfortable on my flight.

This was the worse experience. They delayed our flight twice and we still had to find another flight to get home sooner which was alos delayed. Also, the flight attendant named Ginny on DL9890 leaving at 4:13pm on 3/23/26 was extremely rude.

I love Delta the flight attendants were personable and the flight arrived 1/2 earlier thanks expected. All a plus. The gate agent was a bit flustered but even with that I still had a good experience. Her supervisor assisted me.

I am still at the Airport! Delayed Delayed and Delyaed

There was an unruly family behind us that made the short flight miserable!!! The cabin crew did nothing to contain it.

There’s not much to say about a one hour flight. This is a connection from LA to RNO that I missed the previous night due to a mechanical check delay on my originating flight from JFK to LAX. The short flight itself was fine. Instructions from the pilot and crew were per usual. The coffee was barely lukewarm, which possibly was purposeful so we would down it quickly. Bags were already on carousel upon reaching baggage claim, which was excellent.

It was good. The leg room was not great in Row 1.

Delta flights recently are always delayed AND at jfk tney get the gates further away (need To walk 20’ to get to them/all the way at the end of the terminal). Not sure whats happening but price doesnt match experience!

They double booked seats, the gate staff changed my ticket as I was boarding she went over to the computer and changed it without telling me. She messed up an entire three row section for me and others. Other travelers were outraged but the gate staff were so rude, so condescending saying it wasn't their problem to solve. I would rate this a zero if I could. Will not fly Delta again I'll stick with United and American.

The flight was comfortable and uneventful, which is what I desire

Automated scanning was slow and somewhat haphazard. Too many people were unfamiliar with the tech and were forced to learn on the fly. The hands off approach of the gate staff made it more uncomfortable. This needs work. Overall the flight and cabin crew were excellent.

Crew were fantastic and so catering and wonderful! Full score for the entire crew!

Terrible. They canceled our early morning flight after midnight on the day of and had no available flights to rebook my family on for the next 72 hours. Yet they still had other flights that were not cancelled from JFK so it couldn’t be based on the weather. It felt like they canceled the flight based on it not being profitable enough for them. I am not interested in traveling with the again. The absolute worse customer service and lack of accountability.

First time flying with JetBlue and never again. I went to the counter to request meet and assist because I'm 74 and my wife is 79. I walk with a cane and my wife is handicapped and has her own wheel chair. I told the agent that my wife and luggage was at the entrance door. The ticketing agent said to me that they don't offer meet and assist. I need to bring them our luggage and then go back and get my wife in order to get my boarding pass. As I went back to get my luggage a Southwest agent along with a TSA agent recognized the situation and came over and took my wife and luggage to the JetBlue ticketing counter alongside the line and told the JetBlue agent to issue to take our luggage as soon as they could.

Flight was fine, price was good but food onboard was abysmal. I was on there for breakfast and lunch and dinner 845am EST to 845pm GMT and all I got was a yoghurt parfait, fruit and a piece of cake. Later snacks included an ice-cream brownie and a pizza twist. I was hungry by the time I landed and the airport amenities were closed. Not happy.

Not a pleasant experience, service was poor. Didn't like it

Everything was great. I liked the text updates so that I never miss a gate change & I have all the latest info.

No internet on a flight over three hours in this age is criminal. Staff inattentive and dismissive

Worst flight experience ever flights canceled. JetBlue told us just did not even bother standing in line to come back in one and a half hours then without any information we had to go pick up all of our luggage and spend over $2000 in accommodation just to get home. JetBlue said that the next flight available for us to get home would be three days later. Absolutely absurd hasn’t offered to give us any compensation do not fly JetBlue horrible company. They said it was based on the weather and the weather is great in all locations that we would’ve been flying to total hoax. I think it’s a conspiracy theory.

flight was delayed for hours with no explanation. The plane was a very old aircraft.

For an international flight the seats were smaller than most flight I have been on in economy. I don’t know the size of the seats or perhaps it was the size of the seat dividers that made the seats feel smaller and little amount of space to even turn your body if you needed to

My flight from LGA was cancelled and my rebooked flight from JFK was delayed numerous times. I will now be getting home after 2am.

Flight was delayed half hour before boarding, but when I checked flight aware the plane that would Pick us up had a delay of more than an hour. AA should let us know in advance to avoid waiting several hours in the airport

Not really sure I enjoyed the flight at all. The flight attendants seemed a little tired and rude at times. The snacks were lacking in taste and sustenance. The flight was incredibly turbulent for three plus hours and the pilot had to do a second pass to land at our final destination because he was coming in so fast. He must have taken a short cut and because of it we had to suffer the violent turbulence and the dropping down. It had to be one of if not the worse flights I have ever been on and have traveled vastly all over the world.

Aging planer and NO wifi on a 14 hour day flight. Unless you are retired or don't need to work or be in touch with the world... The lack of Wifif really ruined the flight. And the old plane - really showing it's age, wasn't great

There was no inflight service. Once we landed we were delayed to find a gate for an hour and a half which was 1/2 the total time in the air.

Smooth flight. From the early boarding and all were on board before departure time and arrived early in ONT. Great crew. Thank you!!!!

The gate agent had a really bad attitude and refused to help me get on the standby list. She just handed me a card and said I needed to call a number. I asked her to help with the AA app on my phone and she just shrugged and said she didnt know. After a few phone calls, I eventually just went to a different gate agent on the other side of the terminal and got the help I needed.

One day, I do so hope for a gluten free snack! Seems like with the rest of the world FINALLY figuring out what gluten free is, American Airlines would too. Fingers crossed!!

I would like the crew to talk LESS over the PA and specifically about credit card offers. I am trying to work, sleep, watch a movie and the PA was booming about a credit card offer. Could we go back to the days when the customer was more important than selling a credit card?

It was an early flight and most people napped/slept and the crew let us which was nice.

The crew acted like they had never done this and kept barking passive aggressive orders at people. + the security line + the delay + sitting on the tarmac for 2 hours + none of the apps or signage updating with correct times

More inflight connection. And leg space is horrible. And the paying for baggage I'd ridiculous!!!

My flight was originally from SAT to MCO connecting from MCO to ORD. We got diverted to ATL and than Frontier staff there was sooo un helpful first they said they couldn’t give us any accommodation since our flight first got delayed that cancelled and now it’s 221am and I am still in ATL since they said they need to create a new flight my final destination is ORD and I have been delayed twice and cancelled. With no real help the frontier app didn’t work no email updates over all such a horrible experience

Our flight was canceled. I will never use Kayak nor Frontier for travel again. The entire experience was a headache.

Terrible. The canceled my entire flight when I requested a refund for a trip frontier canceled trip one way.

i was unable to check in the flight. refund requested

I think Frontier was very good at communication. Their app worked very well. Loading was great and the flight was nice and easy.

Great for the price. No wifi or entertainment, but gate agents and crew were fantastic and we boarded quickly and left on time.

The worst. They don’t follow procedure for boarding per group. Flight got delayed for no understandably reasons, they changed our destination from PR to Miami, left us inside a plane for more than 8 hours, then cancelled flight in Miami leaving us stranded. Poorly managed re-accommodation for a new flight and overnight stay so I have to spend in a new ticket and my own hotel room to been able to get to my office next day. Lost 2 days of work and as a doctor, patients loosing their appointments. to other flights and besides

Everything you need to know for your flight from John F Kennedy Intl to Ontario

Information on your arrival and departure airports