JFK - ONT

$113 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 1/10. 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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41,299,237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest round-trip
$230
Overall average: $262
Frontier
Mon 1/12Wed 1/14
JFK - ONT • 1 stop
Cheapest non-stop
$307
Typical prices: $536-$591
JetBlue
Thu 4/30Sun 5/3
JFK - ONT • Non-stop
Our travelers' advice
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.
Expert advice
Expert advice
Expert advice
Expert advice
When to book
3 weeks
in advance
Our data shows that travelers who book at least 3 weeks in advance save around 33% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
March
Cheapest • 38% price drop
December
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Ontario!
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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

Mon, Jan 12 - Wed, Jan 14
Frontier Logo
7:59 am - 2:51 pm
JFK
-
ONT
9h 52m1 stop
Frontier Logo
6:49 pm - 3:24 pm
ONT
-
JFK
41h 35m2 stops
$230Frontier
Mon, Jan 12 - Thu, Jan 15
Frontier Logo
7:59 am - 2:51 pm
JFK
-
ONT
9h 52m1 stop
Frontier Logo
10:18 pm - 5:00 am
ONT
-
JFK
27h 42m2 stops
$231Frontier
Thu, Jan 8 - Wed, Jan 14
Frontier Logo
1:00 pm - 11:56 pm
JFK
-
ONT
13h 56m1 stop
Frontier Logo
7:15 am - 3:25 pm
ONT
-
JFK
29h 10m1 stop
$234Frontier
Sat, Jan 10 - Wed, Jan 14
Frontier Logo
7:59 am - 2:26 pm
JFK
-
ONT
9h 27m1 stop
Frontier Logo
6:49 pm - 12:01 pm
ONT
-
JFK
14h 12m2 stops
$236Frontier
Mon, Jan 12 - Sun, Jan 18
Frontier Logo
7:59 am - 2:51 pm
JFK
-
ONT
9h 52m1 stop
Frontier Logo
4:34 pm - 6:30 am
ONT
-
JFK
10h 56m1 stop
$237Frontier
Fri, Jan 9 - Sat, Jan 10
Frontier Logo
7:59 am - 2:54 pm
JFK
-
ONT
9h 55m1 stop
Frontier Logo
3:21 pm - 6:30 am
ONT
-
JFK
12h 09m1 stop
$238Frontier
Sat, Jan 10 - Sun, Jan 11
Frontier Logo
7:59 am - 7:36 am
JFK
-
ONT
26h 37m1 stop
Frontier Logo
2:34 pm - 6:30 am
ONT
-
JFK
12h 56m1 stop
$239Frontier
Sun, Jan 11 - Wed, Jan 14
Frontier Logo
1:00 pm - 11:56 pm
JFK
-
ONT
13h 56m1 stop
Frontier Logo
7:15 am - 3:25 pm
ONT
-
JFK
29h 10m1 stop
$240Frontier
Wed, Jan 7 - Sun, Jan 11
Frontier Logo
7:59 am - 7:36 am
JFK
-
ONT
26h 37m1 stop
Frontier Logo
7:19 pm - 6:30 am
ONT
-
JFK
8h 11m1 stop
$245Frontier
Mon, Jan 26 - Mon, Feb 2
American Airlines Logo
7:55 am - 2:18 pm
JFK
-
ONT
9h 23m1 stop
American Airlines Logo
11:59 pm - 11:30 am
ONT
-
JFK
8h 31m1 stop
$247American Airlines
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.

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 Wednesdays.

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 March, where tickets cost $220 (return) on average. On the other hand, the most expensive months are December and February, where the average cost of round-trip tickets is $564 and $521 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.

Yes, flying with a layover may cost you more time, but you can also save money on the route, with a 1 stop layover the cheapest option at $383 on average.

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 3 weeks before departure, which saves you about 33% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 5 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.
Airports
JFK

Avoid traffic by having your driver drop you off at the AirTrain station at Lefferts Boulevard. The AirTrain ride to terminals is free.

ONT

Use the Metrolink San Bernardino Line for a convenient trip from Los Angeles to ONT, with a shuttle from Rancho Cucamonga Station.

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$113
Best time to beat the crowds but there is an average 47% increase in price.
Most popular time to fly with an average 59% increase in price.
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 $113 for a one-way ticket and $230 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, Delta, and American Airlines 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 A321neo 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 $372 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 $336 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 $367 or less round-trip.

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 8016 reviews
8.5Crew
7.9Comfort
7.9Entertainment
8.1Boarding
7.3Food
Airline reviews

The plant way delayed departing by 3 hours. It was an old airplane with broken seats and armrests. The bathroom made a hollering sound. A really crappy flight experience and travel day all around.

2.0 MediocrePeter, Dec 2025
JFK - MEM
Read more Delta reviews

The plant way delayed departing by 3 hours. It was an old airplane with broken seats and armrests. The bathroom made a hollering sound. A really crappy flight experience and travel day all around.

None of the airplane features were available during the flight.

Original flight was cancelled and when i was rebooked by the airline, they couldn't seat me in the same type of seat as I had originally booked (went from window/aisle to middle/middle and one was a bulkhead seat, and other wasn't in the same class)

Plenty of leg room, temperature was great and staff was excellent. Would do it more often.

I truly love flying with Delta. They have always treated me with the upmost respect

The aircraft interior is old and tired on this aircraft. The entertainment system never worked despite the crews attempt to reset the system.

The flight was great. The gate location was way to far away!!!

I believe that a four-hour trip should have a meal. Delta had none.

Was charged for my luggage despite having been on one ticket from an international flight. Too tired to argue after 15 hours on flight. Was charged for rechecking it at JFK airport. Not sure why those off Kenya Airways were required to do that.

Flight was canceled, and no effort was made to help with rebooking, no hotel vouchers, no car transportation and minimal food voucher and most places for food were closed by the time the voucher was given. Waited for 3 hours for bags. Simply the worst travel experience I have ever had

Baggage handling poor. Second time this has happened. My bag went to San Francisco instead of Fiji. No apology. Luckily Nadi airport staff are fantastic. My bag arrived in Fiji the next day.

Disliked having to wait a little longer to disembark from the plan when we landed in London

Food should be better quality. Video screens have poor resolution and the library of movies is poor. The other airlines are much better.

They only offered water for Group 6. Awful announcements from the Crew. Couldn't understand a single word. Barely came by for the trash afterwards. Man, I love water for a premium flight. Wow. Water in a cup.

Great. Quick and quiet and east. The breakfast choices were a welcome surprise!

We arrived 4 hours early and still almost missed the flight because they weren’t able to access one of the boarding tickets. They then sent hour bags late and we were all of our without clothing and eventually had to take an expensive cab back and forth to the airport as they wouldn’t deliver the bag which arrived late at night that day and we would have to wait until noon the began day (messing up a second day of plans). Also, all the food has dairy or pork. No vegan or even vegetarian option in the flight—even for purchase.

The comfort of the seats was great, the crew eased my child’s anxieties and the fact that I had full cans of my beverage choice was great.

Pathetic check in experience at JFK. Everything is self check in. Not enough staff present to help with when the check in process or the kiosk gets stuck. Staff present not welcoming or pleasant at all. On the other hand the NY based flight crew was great. Courteous and friendly throughout the flight. Special meals leave a lot to be desired. Kids meals should be made available when kids are flying and same goes for special kids meals too.

This was a horrible experience. For a first class experience, my chair was held together by 3M tape - and I have a photo. The crew weren’t very attentive, somewhat dismissive and forgot my drink and snack, the chair reclined about 3 inches on a 6-hour cross country flight. I was also not informed that there was no lounge available in Newark airport because of renovations, so all around this was one of the worst experiences and I would actively avoid both American and Alaska Air going forward.

Waited on the runway for takeoff for 2.5 hours. Air traffic rerouted us. The plane didn't have enough fuel, so had to go back to the gate. Had to wait for a new pilot. Should have landed at 5:22. Didn't land until 9:10. Trash flight.

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.

The flight departed more than 1 hour late. Leg room is bigger than most airlines

Excellent. Although they used to greet me as a mosaic member and provide a free drink, early boarding helps me to keep coming back to JetBlue.

No music app working: no economy meal on five hour flight; hour on tarmac at the end waiting for a gate. Flight itself was smooth and easy.

Communication with the customer and stay is important. Staff off with a minor inconvenience but it worked out of course. Also this was a very old Mint Class plane. They snuck this one in on us. The updated aircraft are much better.

The flight itself was fine, but the boarding process was extremely frustrating. There is no one scanning boarding passes - passengers just scan themselves and enter the jetway. By the time my husband and I got on the plane and were halfway to our seats they determined there were too many bags on the plane and everything at that point needed to be checked. This created a lot of unnecessary chaos. They should have alerted people before getting on the plane that they would need to start checking bags instead of waiting until people were already on the plane.

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

Decent clean onboard experience. Okay discount airline experience. Unfortunately, any customer service interactions are difficult and unhelpful. There is no service. Also, a premium seat only gets you premium boarding if you line up first. Once they start general boarding you must go to the back of the line. Not very premium

I was 2 hr arrive in the airport and 45 min in the line . After take to my turn . The agent tell me I’m later . I can not board . So my vacation was going to the floor . Just for their bad customer service agent in the airline

The crew was mostly okay. The flight attendant who answered our questions was curt and unhelpful unfortunately. He seemed upset and I understand having off days.

Very bad! No good service delayed my second connection flight

They canceled flight. Hard to believe there was even a plane incoming for us to get on

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

Information on your arrival and departure airports