ONT - JFK

$134 Find Cheap Flights from Ontario to New York John F Kennedy Airport - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Ontario to John F Kennedy Intl departing on 8/8. 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

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Everything you should know

Cheapest round-trip
$312
Typical prices: $314-$512
American Airlines
Thu 8/20Sun 8/23
ONT - JFK • 1 stop
Cheapest non-stop
$313
Typical prices: $317-$507
JetBlue
Sun 8/9Tue 8/18
ONT - JFK • Non-stop
Top airlines
Cheapest • from $312 (round-trip)
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
You can fly direct with JetBlue. Average duration is 5h 21m
Direct flights
Direct flights
+1
+1
Direct flights
Direct flights
+1
Avoid delays
Most punctual • 85% on-time
Best time • Fewest delays
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $288 (round-trip)
Shortest trip • 6h 56m (one-way)
Insights
Insights
Insights
Insights
When to book
in advance
Our data shows that travelers who book at least 2 weeks in advance save around 16% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 20% price drop
Most popular
Good to know
Good to know
+1
+1
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+1
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Flight Deals

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

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Ontario to John F Kennedy Intl 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 Ontario to John F Kennedy Intl

Thu, Aug 20 - Sun, Aug 23
American Airlines Logo
12:59 pm - 11:58 pm
ONT
-
JFK
7h 59m
1 stop
American Airlines Logo
6:54 am - 1:31 pm
JFK
-
ONT
9h 37m
1 stop
$312American Airlines
Thu, Oct 1 - Tue, Oct 6
Delta Logo
10:00 pm - 10:15 am
ONT
-
JFK
9h 15m
1 stop
Delta Logo
6:00 am - 12:22 pm
JFK
-
ONT
9h 22m
1 stop
$313Delta
Tue, Sep 15 - Fri, Sep 18
JetBlue Logo
9:10 pm - 5:31 am
ONT
-
JFK
5h 21mnonstop
JetBlue Logo
5:15 pm - 8:13 pm
JFK
-
ONT
5h 58mnonstop
$317JetBlue
Mon, Aug 17 - Tue, Aug 25
JetBlue Logo
11:59 pm - 8:20 am
ONT
-
JFK
5h 21mnonstop
JetBlue Logo
7:29 pm - 10:37 pm
JFK
-
ONT
6h 08mnonstop
$319JetBlue
Fri, Aug 28 - Thu, Sep 3
JetBlue Logo
11:59 pm - 8:20 am
ONT
-
JFK
5h 21mnonstop
JetBlue Logo
7:30 pm - 10:38 pm
JFK
-
ONT
6h 08mnonstop
$320JetBlue
Sat, Aug 8 - Fri, Aug 21
Delta Logo
12:00 pm - 11:10 pm
ONT
-
JFK
8h 10m
1 stop
Delta Logo
6:40 pm - 11:34 pm
JFK
-
ONT
7h 54m
1 stop
$323Delta
Mon, Aug 10 - Tue, Aug 18
Frontier Logo
5:05 pm - 6:18 am
ONT
-
JFK
10h 13m
1 stop
Frontier Logo
8:35 am - 7:01 pm
JFK
-
ONT
13h 26m
2 stops
$324Frontier
Fri, Aug 14 - Fri, Aug 21
JetBlue Logo
11:59 pm - 8:20 am
ONT
-
JFK
5h 21mnonstop
JetBlue Logo
7:30 pm - 10:38 pm
JFK
-
ONT
6h 08mnonstop
$325JetBlue
Wed, Aug 12 - Tue, Aug 18
JetBlue Logo
11:59 pm - 8:20 am
ONT
-
JFK
5h 21mnonstop
JetBlue Logo
7:29 pm - 10:37 pm
JFK
-
ONT
6h 08mnonstop
$327JetBlue
Mon, Aug 10 - Wed, Aug 19
JetBlue Logo
11:59 pm - 8:20 am
ONT
-
JFK
5h 21mnonstop
JetBlue Logo
7:29 pm - 10:37 pm
JFK
-
ONT
6h 08mnonstop
$328JetBlue
Booking Insights

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

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

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

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

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

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

If you are looking for a flight deal from Ontario to New York John F Kennedy Airport, look for departures on Mondays and avoid leaving on a Wednesday, as it's usually the priciest day. When flying back from New York John F Kennedy Airport, Tuesday is the cheapest day to fly and Monday is the most expensive.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Ontario to New York John F Kennedy Intl Airport, 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 Ontario to New York John F Kennedy Intl Airport is January, where tickets cost $297 (return) on average. On the other hand, the most expensive months are June and March, where the average cost of round-trip tickets is $480 and $430 respectively.

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

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 $436, prices are generally cheapest when you fly direct.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Ontario to New York John F Kennedy Intl Airport, 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 Ontario to New York John F Kennedy Intl Airport, you should book around 2 weeks before departure, which saves you about 16% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 19 weeks before departure.

Expert advice

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

 
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 seasonMarch
Cheapest flight$134
Best time to beat the crowds but there is an average 15% increase in price.
Most popular time to fly and prices are also 11% lower on average.
Flight from Ontario to New York John F Kennedy Airport

When to book flights from Ontario to John F Kennedy Intl

Are your dates flexible? Find out the best times to travel from Ontario to John F Kennedy Intl 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 Ontario to New York John F Kennedy Airport flights

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

    In the last 5 days, the lowest price for a flight from Ontario to New York John F Kennedy Intl Airport was $134 for a one-way ticket and $312 for a round-trip.

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

    No, a passport isn't needed to fly from Ontario to New York John F Kennedy Airport. However, local authorities might ask for an official ID.

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

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

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

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

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

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

  • On which days can I fly direct from Ontario to New York John F Kennedy Airport?

    There are nonstop flights from Ontario to New York John F Kennedy Airport on a daily basis.

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

    The two airlines most popular with KAYAK users for flights from Ontario to New York are Alaska Airlines and Delta. With an average price for the route of $346 and an overall rating of 7.9, Alaska Airlines is the most popular choice. Delta is also a great choice for the route, with an average price of $383 and an overall rating of 7.8.

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

    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 Ontario to New York John F Kennedy Airport.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to New York John F Kennedy Airport from Ontario 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 Ontario to New York John F Kennedy Airport?

    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 New York John F Kennedy Airport with an airline and back to Ontario with another airline. Booking your flights between Ontario and JFK 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 Ontario to New York John F Kennedy Airport?

    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 New York John F Kennedy Airport from Ontario 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 Ontario to New York John F Kennedy Intl Airport

  • Looking for a cheap flight? 25% of our users found flights on this route for $247 or less one-way and $375 or less round-trip.

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

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

Direct departures

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

Direct returns

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

Reviews of the top 5 airlines serving from Ontario to John F Kennedy Intl

 
See real verified KAYAK customer reviews for airlines flying from Ontario to New York. 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 Ontario to John F Kennedy Intl? 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
Alaska AirlinesOverall score based on 12607 reviews
7.8Comfort
7.0Entertainment
8.1Boarding
8.5Crew
7.1Food
Airline reviews

More efficient with checking lines and boarding/checking bags when needed.

4.0 OkayAnonymous, Apr 2026
SAN - JFK
Read more Alaska Airlines reviews

More efficient with checking lines and boarding/checking bags when needed.

A TV Screen and movies would have been a great addition. The Alaska Terminal at JFK is TOO BIG!!! You need to go up and down 3 escalators to get to your gate and to baggage claim -- and all this while you are carrying your backpack, other bags, etc. I don't know what they were thinking. You can easily miss a flight if you don't add in at least 30 minuites to get to a gate.

The plane was dirty, the seats were tiny, wasnt my favorite airline tbh

It wasn’t great. Your app is not user friendly unless you sign up for those points. It tries to force you and won’t show you flight/trip info until you sign up. You have to somehow get into get your boarding pass because your kiosks don’t offer boarding pass information only bag check. It was not helpful or user friendly. The app is useless unless you sign up for your rewards program. My daughters info was missing even though I checked us in we had to get out of security and go back to a ticket window the woman told us that it sometimes populates incorrectly so it didn’t have her information. It populated incorrect birth date. She said this is common. Luckily we were at Palm Springs and not JFK where leaving the giant security line would have been a much bigger problem. I will avoid your airline in the future if it’s possible. Also no food availability except dry snack boxes.

Was late but $50 voucher was great benefit of the summit card.

Poor. They should have given me a row with more room and instead they put me in a middle seat with two strangers next to me

I truly appreciated the kindness and attentiveness of the staff and flight attendants. They did their best to be prompt with departure times to San Diego and back to New York! Alaska Airlines ... you are awesome!!

Very mediocre, and disappointing for the price of the ticket

On time boarding, take off and landing. Will fly again with Alaska Airlines.

My flight wait is 3 hours delayed due to Unknown reason. We waited a very long time in the tarmac. Our flight 24 was scheduled @ 7, therefore we left my house at 330 to park our car. We were at the gate @ 530, then we were told at 6a that it will be late , we boarded at 930 but did not take off until 1015. Therefore my arranged pick up in JFK was cancelled because of no show. Before all these I got an email offers of changing my flight to a different date which I took a day earlier. I will never again take Alaska Airlines, very Inefficient and Disappointing.

The plane was old and thus the seats were not good. No cushion left whatsoever, and it all was a bit worn out.

Be on time? When not on time a circling for over an hour offer more than 1 bag of chips to the passengers? It was a 7 hour flight by the time we got done.

The crew, and fellow passengers, were super gracious and kind. There seemed to be plenty of bin space even though the plane was full. It’s nice to get a glass of wine with dinner in Premiere seating, and there was a lot of food.

Delta One is extraordinary. I fly business when somebody hires me. I just wonder why there is such a chasm between business class and the insanely inhumane and nonsensical coach. The seats are not large enough to fit even my tiny wife. We fly 10% of what we did because we don’t want to pay 5-10 k but for $400 it’s unbearable. It seems like the accountants took over and made stupid decisions. Screw in 20 extra seats and make it so unbearable that people fly 90% less. Just put the damn price up and put some proper chairs in. But business, yay.

The flight used a B767 with a very old interior from before 2014. The entertainment system did not work at all during the flight despite attempts to reset the system. It was like they flew this route just to be competitive.

Most aspects were good however if they assign boarding zones they ought to enforce them or why bother? My luggage from SAN-JFK-MAD was lost in NY so I without my main bag for two days upon arrival in Spain. They were helpful in tracking it and eventually delivered it to my hotel. The flub was because of a delay upon arrival in NYC. I had booked 2 1/2 hours between flights but we had to hold on the taxiway for an hour after landing while waiting for a clear gate which likely caused the baggage error.

Boarding is, as it always is… horrible. Gate lice. Slow moving zones. Too many people with carry ons

My seat was changed at the last minute and I was moved to the last row, right next to the bathroom despite selecting my seat well in advance. I was also made to check my carry on due to space but when I got on the plane there was significant empty overhead space. Picking up my carry on from the luggage carousel added time to my trip which had already been extended due to delay.

Do not get fooled by the term “Delta One” flat bed! The seats were super narrow. The ottoman for the feet was so narrow that when you recline the seat in flat bed position, you can only fit one foot in the 8” width space. There was only 1 flight attendant for First Class. The breakfast took 2 hours to get served. Instead of offering French Toast, the served bread pudding. The champagne with orange juice or Mimosa tasted terrible. Almost all the movies offered were ridiculously old. For a long flight from San Francisco to NY, it was frustrating! I DO NOT RECOMMEND this flight!!!

It was a very smooth ride. Not sure on a flight departing at midnight can be much better but it was late arriving and I had an early day so really just the logistics.

Agency very bad had to cancelled my booking too many changes in the flight changed my flight to 1 week

Our flight from JFK to Madrid was delayed. We had to go from one side of the Madrid airport (Terminal 4s to the far end of terminal 4 - Gate K98) to our gate in less than 30 minutes. Put passport control and security/baggage check and that’s very hard unless you’re Usain Bolt. I called Iberia Airlines and the telephone customer service told me that I was going to have to pay to re-book. Luckily the help desk in the airport (who was dealing with dozens of people from the same JFK-Madrid flight) did not charge us extra to reschedule to a flight 8 hours later. They also gave us a voucher for breakfast and lunch. Glad the actual person at the airport had some actual sense.

Boarding gate at LAX was too crowded—two gates next to one another

We left at 1030 am pacific from LA and supposed to land at 7 pm Eastern in NY. They made a detour, stopped in Philadelphia and didn’t land till 1130 PM Eastern!!! Worst flight experience with no pilot communication with no explanation as to what was going on. Everyone was very frustrated to say the least.

The flight itself was excellent but the gate attendant made me check my carryon since she said it was an inch too big. I’ve had no problems with this carryon on recent flights on Qantas, Delta, Austrian, Southwest Airlines even though the overhead bins are the same size. there were other carryons in the bins that also looked larger than mine and there was room left in the bins for more. When I picked up my carryon from baggage claim one of the wheels had broken off.

Flight was scheduled at 11:26am but they keep Delaying until midnight. They waited at airport restless.

My seat was assigned last row behind restrooms No legroom’s I’m very Pettit Still was not comfortable Food choice was excellent

Amazingly comfy flight - I had upgraded for a reasonable price and it was worth it. The food also was good.

Comfort of seats, ease of boarding. Food selection could be better

19 hr delay requiring a change to red eye. No lounge access without paying. Loss of seat upgrade fee.

Complete and total debacle from start to finish. HUGE mistake picking this airline. NEVER again! Rudest staff in the business.

I tried to book a flight with Jet Blue. Your third party company hijacked my attempt with a website that looked like I was booking with Jet Blue. I realized it when I paid. I tried to cancel and was told by a man in India that there were no refunds. $735 stolen, Thanks Kayak!

They lost my luggage and refuse to help. Terrible airline. I've never experienced worse customer service in my life. Pretty much just told me too bad that I lost all my luggage, not caring that I am stuck in Europe for 2 weeks with absolutely nothing.

It was good. I’m very disappointed that they don’t give commentary ear pods for the movie. I forgot mine at home

I don’t usually fly budget airlines or airlines in the United States. It was as good as any other airline. The seats are comfortable and the airline attendants are not rude & surly. Very nice flight (s).

Too many long delays with JetBlue. Worst major airline that serves JFK but unfortunately I keep going back because of the prices.

Little snafu at boarding. Staff communicated with gate poorly. Flight attendant was rude making disembark early. This was an older mint class. Needs an overhaul for sure. Food was good. The male flight attendant was really nice.

For some reason, the seats on this flight seemed unusually uncomfortable. Speaking with friends who took another JetBlue flight later in the day, they brought up the same issue.

JetBlue has really gone downhill. They have all the problems without the discounted price. If you need to get anywhere in time, this is no longer the airlines for you

Flight was delayed 30 minutes, but otherwise was terrific. We used our points to upgrade to Mint for the first time which was a fun & comfortable. Josh & Kori were very attentive & genuinely cared about our comfort.

A 630departure flight Delayed 6hours! They changed my gate, I moved to the new gate. Had our flight on the screen for 12noon departure. I go get above to eat, check screen again and the flight was gone, no notice no announcement, nothing!! They sent my bag on the flight I wasn’t on, got it back to me 3days later. Thank goodness they did refund my money but I will NEVER fly them again.

I guess you get what you pay for. The seats are very uncomfortable and very little space. The snacks were pricey.

food not having to pay for it, reclining seat would be nice, more leg room, HEAT!!!!!!!

Very easy with the app to board and staff skills

Flight was changed (according to Frontier, by Kayak) without my notification. And all flights were delayed by at least an hour and a half. Uncomfortable plane. Bad service. Will never fly Frontier again.

Was left with many other passengers in SJU by frontier airlines due to delay caused by frontier. Worst experience ever and worst airline ever.

The takeoff was the smoothest I've ever experienced on any airline and this is the first time I've flown on frontier so this was an extremely pleasant surprise!

A lady asked to stop the flight after the tunnel pulled away and we began to depart a flight that was already hours late. The attendance respectfully stopped the the plane and had the tunnel return. After the tunnel returned the passenger claimed to have changed her mind . The tunnel was then put in reverse and the passenger remained on the plane .. They should have sent the sick passenger off the plane like initially replaced. They existed a couple off the plane prior to that situation.. So.. all and all.. it was a long and flight.. .

We understand and comply with Frontier’s bag sizes. We’ve had some problems in past while having to await other passengers who do not understand the baggage restrictions or have not prepaid and that is usually our biggest concern (others delaying us) with flying Frontier. Flying OUT of ONT, however, has always been a great experience. I’ve also noted even on delayed Frontier flights very knowledgeable pilots who manage expectations well.

Long lines, rude staff, everything that's offered you have to pay for.

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

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