ONT - JFK

$101 Find Cheap Flights from Ontario to New York John F Kennedy Airport

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 12/9. 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

KAYAK searches hundreds of travel sites at once for deals on flights to New York John F Kennedy Intl Airport

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

Cheapest round-trip
$209
Overall average: $346
Frontier
Thu 11/13Tue 11/18
ONT - JFK • 2 stops
Cheapest one-way
$101
Typical prices: $152-$260
Frontier
Tue 12/9
ONT - JFK • 1 stop
Our travelers' advice
AI-generated summary based on content written by travel experts
ONT offers streamlined security with short wait times.
Use the JFK AirTrain for free terminal transfers.
Expert advice
Expert advice
Expert advice
Expert advice
Top airlines
Frontier
Cheapest • from $209 (round-trip)
Alaska Airlines
Best reviews • 8.0 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to book
2 weeks
in advance
Our data shows that travelers who book at least 2 weeks in advance save around 29% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
January
Cheapest • 26% price drop
September
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+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, Nov 13 - Tue, Nov 18
Frontier Logo
10:05 am - 12:33 amONT-JFK
11h 28m2 stops
Frontier Logo
7:59 am - 8:42 pmJFK-ONT
15h 43m1 stop
$209Frontier
Find Deal
Thu, Oct 30 - Wed, Nov 5
Frontier Logo
12:05 pm - 3:00 pmONT-JFK
23h 55m1 stop
Frontier Logo
4:00 pm - 9:27 pmJFK-ONT
8h 27m1 stop
$210Frontier
Find Deal
Mon, Nov 10 - Wed, Nov 19
Frontier Logo
7:24 pm - 6:30 amONT-JFK
8h 06m1 stop
Frontier Logo
4:00 pm - 9:27 pmJFK-ONT
8h 27m1 stop
$211Frontier
Find Deal
Fri, Oct 31 - Wed, Nov 5
Frontier Logo
6:53 am - 12:33 amONT-JFK
14h 40m2 stops
Frontier Logo
4:00 pm - 11:10 amJFK-ONT
22h 10m1 stop
$212Frontier
Find Deal
Mon, Nov 10 - Wed, Nov 19
Frontier Logo
7:24 pm - 6:30 amONT-JFK
8h 06m1 stop
Frontier Logo
4:00 pm - 9:27 pmJFK-ONT
8h 27m1 stop
$213Frontier
Find Deal
Sun, Nov 16 - Wed, Nov 19
American Airlines Logo
11:59 pm - 11:28 amONT-JFK
8h 29m1 stop
American Airlines Logo
9:00 am - 6:20 pmJFK-ONT
12h 20m2 stops
$252American Airlines
Find Deal
Wed, Oct 29 - Fri, Oct 31
Delta Logo
11:48 am - 11:59 pmONT-JFK
9h 11m1 stop
Delta Logo
2:00 pm - 7:19 pmJFK-ONT
8h 19m1 stop
$260Delta
Find Deal
Sun, Dec 7 - Wed, Dec 10
Multiple Airlines Logo
4:02 pm - 10:33 amONT-JFK
15h 31m2 stops
Multiple Airlines Logo
6:59 am - 9:17 pmJFK-ONT
17h 18m1 stop
$261Multiple Airlines
Find Deal
Sat, Nov 1 - Wed, Nov 5
American Airlines Logo
1:00 pm - 11:40 pmONT-JFK
7h 40m1 stop
American Airlines Logo
6:30 am - 12:03 pmJFK-ONT
8h 33m1 stop
$262American Airlines
Find Deal
Sun, Nov 2 - Wed, Nov 5
Multiple Airlines Logo
7:20 am - 3:27 pmONT-JFK
29h 07m1 stop
Multiple Airlines Logo
4:00 pm - 9:27 pmJFK-ONT
8h 27m1 stop
$269Multiple Airlines
Find Deal
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.

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 Saturdays and avoid leaving on a Wednesday, as it's usually the priciest day. When flying back from New York John F Kennedy Airport, Friday 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 $257 (return) on average. On the other hand, the most expensive months are December and February, where the average cost of round-trip tickets is $451 and $392 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 $336, 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 29% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 4 weeks before departure.

Expert advice

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

 
Snippets provided in this section are AI-generated based on a summarization of KAYAK-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Airports
ONT

ONT offers streamlined security with average wait times between 6-15 minutes, making it a stress-free departure option.

Read more about ONTby Jennifer Simonson
JFK

Avoid traffic by using the JFK AirTrain from Lefferts Blvd station, which offers free rides between terminals.

Read more about JFKby Harriet Baskas
Our travel experts
Jennifer Simonson

Jennifer Simonson

Expert on ONT

Jennifer Simonson

Jennifer Simonson

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.

Read more
Harriet Baskas

Harriet Baskas

Expert on JFK

Harriet Baskas

Harriet Baskas

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.

Read more

Good to know

Low seasonFebruary
Cheapest flight$101
Best time to beat the crowds but there is an average 12% increase in price.
Most popular time to fly and prices are also 5% 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 3 days, the lowest price for a flight from Ontario to New York John F Kennedy Intl Airport was $101 for a one-way ticket and $209 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?

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

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

    The Airbus A318/A319/A320/A321 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 $548 and an overall rating of 8.0, Alaska Airlines is the most popular choice. Delta is also a great choice for the route, with an average price of $434 and an overall rating of 7.9.

  • 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 $228 or less one-way and $322 or less round-trip.

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.
8.0
Alaska AirlinesOverall score based on 11095 reviews
7.8Comfort
7.1Food
8.1Boarding
8.5Crew
7.0Entertainment
Airline reviews

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

10.0 ExcellentAnonymous, Oct 2025SFO - JFK
Read more Alaska Airlines reviews

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

set room is an issue and I am not obese.

Terrible. After boarding we sat on the runway for 1.5 hours "25th in line to take off" ... Alaska Air is on 7th terminal , far away from rest of airport

Better sinage at check-in counter on lines for baggage check in and boarding pass check in, specfically at JFK. It was a mess to figure and wasted a lot of people's time.

The first leg of the trip was excellent. Lovely flight attendants and comfortable plane. The second leg left a lot to be desired. The flight attendant was rude when I asked for a Diet Coke, the boarding required quite a long walk and the plane was crammed and uncomfortable.

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.

Had to pay $8 for internet wasnt cool, no tv’s, had to use phone to watch movies, no food choices seemed available unless u ordered in advance maybe I'm wrong about that but seemed that way, no snacks were served. Seemed a very bare bones flight. But it was on time and safe so that was good

You no longer give receipts for baggage at the counter. And it is next to impossible to get it on your webpage. Spent 20 min trying and gave up... I need receipt to submit for reimbursement and don't have time to waste on your poor webpage Disappointing .....

Overall it was good. There was a delay in departure, which is why I did not rate it as excellent.

The flight was very smooth. The crew was very friendly.

On this flight I felt the food offering was not as complete as on previous flights. The tomato salad was a bit off and there was nothing additional such a bread or butter. The breakfast was only one option, so you either ate what they had or ate nothing. The crew was efficient, but most seemed frustrated throughout the flight. The flight arrived early and was obstacle-free, so I’m overall quite happy, but the shine in the rest of the experience just wasn’t there.

De planning was an absolute mess. We were never told that we weren’t at the gate and that we had to go down unstable stairs and then hop on a bus. People were falling, we couldn’t tell who was in charge. Overall terrible communication that ended up leaving a bad impression at the very end of the experience.

For a 69 year old with health problems I had the worse experience, no wheelchair when I entered a lady told me to sit and wait while a gentleman told me I had to walk to the Delta station, which I did. I had a carry on and a bag, and I was traveling with my service dog, which was on his carrier and the lady charged me for my carry on luggage, beside all the waiting cause of the delay, I had to walk to get my luggage cause no wheelchair showed up, I am so disappointed. I will get in touch with the company. I got home at 3:00 am, not good for my health situation.

The crew was amazing; Von, Vera and Guadalupe were very friendly and attentive throughout the entire flight. They were friendly and welcoming to everyone. A solid and dedicated team for sure!

Terrible. I was bumped off of my original flight and spent the next six days fighting to get back on it. I lost hours of my vacation trying to get this situation corrected.

Our flight was canceled after several delays. No hotel vouchers offered, minimal help for resolution leave me ultimately to cancel and book on an other airline. Then waited to get bags for more than 3 hours This whole experience has been awful!!!

The way BCN airport handled boarding was a huge improvement over our trip to Spain from JFK. Instead of gate-mosquitos edging in before their zone was called, in BCN they had clearly marked lines for Zones 1-8 and people just lined up correctly. The flight itself was uneventful. The meal (curried chicken and rice) was one of the better meals we've had on Delta. Entertainment options were plentiful, power chargers were available in Main Cabin, and seats were decent. Flight staff were very friendly and positive throughout the 8 hour flight.

I like for how they process during check in. It was very smoothly.

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 was tough as we had to take a bus out to the plane and walk up a lot of stairs. Difficult with heavy carry-ons that said I got an entire empty row of seats, which was excellent for an international flight. Food was very mediocre but happy with the comfort so not complaining.

There was no TV's on the plane? I tried to activated the WiFi multiple times before the plane took off but it wasn't work well.

Air Marco’s fleet of airplanes are old and pathetic. The seats are torn and stained. The monitors don’t work properly. If this wasn’t a business trip and I had control of booking the flight, I would not travel on this carrier.

Good service, friendly staff. Food was average for airlines and the seats were small.

Pathetic check in experience once again. Not enough staff scheduled at bag drop or for special assistance at LHR. Really need to rethink the whole self check in procedure. The crew was good. A very decent selection of special meals in this leg as compared to the JFK-LHR leg.

Flight was cancelled 3 hrs AFTER etd. Thetefore Missed connection from JFK to New Zealand . No accommodation provided… This cost ne aporox 1000 USD in extra expenses and turned whst should have been a 24 hr trip ftom Boston - New Zealand into a VERY expensive , late 70+ hr nightmare … Complete nonsense!!!

Overall fine, but the delay was annoying and the reasons for the delay were not communicated. The crew on board were phenomenal!

The chair cushions may need an upgrade. I have been noticing they are so worn out, thin so you’d sit in a dip 😄. Other than that, all was an enjoyable trip. Thanks AA!

Whenever a passenger purchase a ticket his advantage number should automatically to his information. It's not everyone remember the number. You request for your number and American airline agent say they will email it....and they never email anything and you loose your mileage just because you don't remember your number. It should automatically go your information and associate with your email account at all times

The flight was two hours late to take off. The captain kept making announcements in English, but the volume on the speakers was low and we could not hear him. The flight attendant’s French translation was loud and clear, but we couldn’t understand French. The crew was nowhere to be found to relay what the captain was announcing. Very frustrating experience. American has to do better.

Paid $35 and not able to access the internet at all.

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).

They have the most inexperienced / rude flight staff I’ve encountered

I paid extra for a seat closer to the front. The TV didn’t work at all for the entire flight. Would have been nice to know before I purchased an “upgraded “ seat

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

flight cancelled after 2 delays. left us sitting in JFK at 1am. no customer service to assist rebooking.

To not have food or proper snacks on a 5 hour flight was the worst.

Spend hours delayed with no food, water anything sitting on the aieplane with no ability to eat or use the restroom. My entire experience was the absolute worst. I will never fly jet Blue again.

Ground crew gave me interference about carrying a laptop and a small shoulder bag, even though I told them I traveled with them all the time. I then placed my laptop bag in my carryon and took out a medical device, and ground crew still tried to give interference. I had to remind them that medical devices don't count towards luggage limits. It was quite annoying and unne

The gate and ground staff were excellent, friendly, went out of their way to acknowledge my Mosaic status. The plane was an older Airbus, so the seats were a little worn. The in flight attendant was not very nice, and seemed to be annoyed to be at work or be on this flight. Flight was fast and we landed early and pilots kept us informed.

The regular feedback of any changes to our flights. The Jetblue staff were very helpful. Our flights were great. Lots of leg room!

This airline sucks. They offer low rates then charge you for everything, the app does not work well, the seats are the most uncomfortable. Maintenance issues on the flight, and you still have to sit through their credit card commercials. People are nice enough but does not make up for overall poor experience.

Disaster. They lied every step of the way. We ended up being delayed due to crew and then allegedly abandoned the flight because of a curfew at LGA. No rebooking to LGA at any reasonable time. No hotel. No meal vouchers. Had to sleep in the airport and fly to Newark instead. Will never fly Frontier again.

My first flight was delayed 5 hours. The 2nd flight was canceled til the next day and the never even tried to compensate for it. Worse I was delayed again on the flight the rebooked me on.

Cancelled flight after I arrived at airport after 75 min drive and parking. Next flight was 4 days in the future. Had to scramble and buy a much more expensive flight on another carrier.

I liked the turn-style feature at gate 209B at LAX. Very efficient process. The gate staff also made several, clearly directed announcements so I felt very informed.

The seats were awful, hard plastic covered in sheet vinyl. The airline tries to scam you into paying extra to get seat together when the flight wasn’t full. They were going to separate a family with young children but my wife who had a row to herself gave up her seat so the young mom could be with her young boys. I’m never giving this airline my money again.

It was a short flight so no food or entertainment….

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

Frontier had yet another flight cancellation. Have never made a complete round trip with this airline without at least one leg getting cancelled. Miserable flights - dirty, uncomfortable planes that apparently always have issues since I've had multiple delays and cancellations with them.

Flight was delayed 3 times, would have been nice to have received text message instead of email notifications. Frontier app wasn’t even updated accordingly, no gate number disclosed. No agent at front desk of gate to inform of delay. Very confused and left if the dark

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

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