NYC - ONT

$111 Find Cheap Flights from New York 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 New York to Ontario departing on 1/20. 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.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from New York to Ontario.
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Everything you should know

Cheapest round-trip
$209
Overall average: $377
Multiple Airlines
Fri 2/20Sat 2/28
EWR - 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.
Use Lefferts Boulevard AirTrain at JFK for easy access.
The Metrolink San Bernardino Line offers budget travel from ONT.
Expert advice
Expert advice
Expert advice
Expert advice
Video guide: How to find cheap flights to Ontario
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Top airlines
American Airlines
Cheapest • from $238 (round-trip)
Southwest
Best reviews • 8.0 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Top routes
JFK-ONT
Cheapest
JFK-ONT
Most popular
Insights
Insights
Insights
Insights
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
September
Cheapest • 19% price drop
July
Most popular
Good to know
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+1
+1
Good to know
Good to know
+1
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We hope you love your trip to Ontario!
Flight Deals
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Flight Deals

Cheap Flights from New York to Ontario (NYC-ONT)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from New York 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 New York to Ontario

Fri, Feb 20 - Sat, Feb 28
Multiple Airlines Logo
4:05 pm - 7:26 am
EWR
-
ONT
18h 21m1 stop
Multiple Airlines Logo
6:00 am - 7:59 pm
ONT
-
EWR
10h 59m2 stops
$209Multiple Airlines
Sat, Feb 7 - Sat, Feb 14
Multiple Airlines Logo
4:15 pm - 7:32 pm
EWR
-
ONT
30h 17m2 stops
Multiple Airlines Logo
8:21 am - 5:54 pm
ONT
-
EWR
30h 33m1 stop
$216Multiple Airlines
Mon, Jan 5 - Sat, Jan 10
Frontier Logo
10:55 pm - 10:12 pm
LGA
-
ONT
26h 17m1 stop
Frontier Logo
7:00 am - 5:02 pm
ONT
-
LGA
7h 02m1 stop
$225Frontier
Sat, Jan 17 - Sat, Jan 24
Multiple Airlines Logo
4:15 pm - 7:01 pm
EWR
-
ONT
29h 46m1 stop
Multiple Airlines Logo
7:15 am - 7:53 am
ONT
-
EWR
45h 38m2 stops
$226Multiple Airlines
Mon, Jan 5 - Thu, Jan 8
Frontier Logo
10:55 pm - 10:12 pm
LGA
-
ONT
26h 17m1 stop
Frontier Logo
8:31 am - 9:05 pm
ONT
-
LGA
9h 34m1 stop
$230Frontier
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
Tue, Feb 10 - Fri, Feb 13
American Airlines Logo
8:00 am - 2:18 pm
LGA
-
ONT
9h 18m1 stop
American Airlines Logo
7:10 am - 6:59 pm
ONT
-
LGA
8h 49m1 stop
$233American Airlines
Thu, Feb 12 - Sun, Feb 15
American Airlines Logo
5:59 pm - 11:59 pm
LGA
-
ONT
9h 00m1 stop
American Airlines Logo
11:58 pm - 10:30 am
ONT
-
LGA
7h 32m1 stop
$236American Airlines
Tue, Feb 10 - Sat, Feb 14
American Airlines Logo
9:00 am - 4:05 pm
LGA
-
ONT
10h 05m2 stops
American Airlines Logo
11:59 pm - 11:59 am
ONT
-
LGA
9h 00m1 stop
$240American Airlines
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 New York to Ontario flights

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

Find cheap flights to Ontario
Find cheap flights to Ontario

Planning a trip from New York to Ontario? KAYAK’s data-powered insights will help you find cheap flights. Learn the best time to fly, how early to book your ticket, and other tips to secure great prices.

How much is a round-trip flight from New York 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 to Ontario departing in February.

What is the cheapest New York to Ontario flight route?

Data is based on round-trip flight searches on KAYAK over the past month.

The cheapest return flight from New York to Ontario costs $247 on the route between New York John F Kennedy Intl Airport (JFK) and Ontario (ONT). It is also the most popular route.

What’s the cheapest day of the week to fly from New York to Ontario?

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

If your flying dates are flexible, you should consider flying to Ontario on a Friday, as we generally find the cheapest rates on that day for this route. On the other hand, Monday is the most expensive day to fly from New York to Ontario. For your return ticket, we recommend flying on a Saturday and avoiding Wednesdays for the best deals.

What is the cheapest month to fly from New York 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 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 to Ontario is September, where tickets cost $287 (return) on average. On the other hand, the most expensive months are December and March, where the average cost of round-trip tickets is $520 and $395 respectively.

Can I save money by flying with a layover from New York 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 2 stops layover the cheapest option at $346 on average.

How far in advance should I book a flight from New York 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 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 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 New York 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 congestion at JFK by using the AirTrain station at Lefferts Boulevard for drop-offs and pick-ups. It's free between terminals.

ONT

For budget-friendly travel from ONT, use the Metrolink San Bernardino Line and ONT Connect Shuttle. It's included in the Metrolink fare.

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 seasonOctober
Cheapest flight$108
Best time to beat the crowds with an average 19% drop in price.
Most popular time to fly and prices are also 18% lower on average.
Flight from Newark Liberty Airport to Ontario

When to book flights from New York to Ontario

Are your dates flexible? Find out the best times to travel from New York 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 flights from New York to Ontario

  • What are my options for going from Ontario International Airport (ONT) to the city center?

    The quickest way to go from Ontario International Airport (ONT) to the city center is by driving, which usually takes between 5 and 10 minutes. Otherwise, you can choose to take public transportation, such as bus line 61. When you take the bus, you will arrive downtown in around 15 minutes.

  • Can I check a bag for free for my flight from New York to Ontario International Airport (ONT)?

    If you fly Economy from New York to Ontario International Airport (ONT), you will typically have to pay to check a bag. Both American and United Airlines have a maximum weight limit for checked bags of 50 lb.

  • What airline lounges are available at Newark Liberty International Airport (EWR)?

    Newark Liberty International Airport (EWR) has a few different airline lounges to choose from. In Terminal A, you will find the American Airlines Admirals Club, the Delta Sky Club, and the United Club. In Terminal B, there is the British Airways Lounge, the Delta Sky Club, and the Virgin Atlantic Clubhouse.

  • Are there any sustainable airlines that operate flights from New York to Ontario International Airport (ONT)?

    United Airlines has made choices to improve the environmental footprint of its operations. The company has vowed to become net zero with greenhouse gas emissions by the year 2050. It has also invested money in a variety of carbon capture and sequestration technologies and projects throughout the world.

  • What is the cheapest flight from New York to Ontario?

    In the last 3 days, the lowest price for a flight from New York to Ontario was $108 for a one-way ticket and $209 for a round-trip.

  • Do I need a passport to fly between New York and Ontario?

    No

  • Which airports will I be using when flying from New York to Ontario?

    New York is served by 3 major airports and there is only 1 main airport in Ontario. You will leave New York from one of these airports: Newark, New York John F Kennedy Intl, or New York LaGuardia. You will be arriving at Ontario.

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

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

  • Which aircraft models fly most regularly from New York to Ontario?

    The Airbus A321neo is the aircraft model that flies most regularly on the New York to Ontario flight route.

  • Which airline alliances offer flights from New York to Ontario?

    Star Alliance, SkyTeam, and oneworld are the airline alliances operating flights between New York and Ontario, with Star Alliance being the most commonly used for this route.

  • What is the most popular layover when flying to Ontario from New York?

    Dallas is the most popular layover city among KAYAK users traveling from New York to Ontario.

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

    The two airlines most popular with KAYAK users for flights from New York to Ontario are Southwest and Alaska Airlines. With an average price for the route of $374 and an overall rating of 8.0, Southwest is the most popular choice. Alaska Airlines is also a great choice for the route, with an average price of $322 and an overall rating of 8.0.

  • How does KAYAK find such low prices on flights from New York 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 to Ontario.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Ontario from New York 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 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 with another airline.

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

  • Looking for a cheap flight? 25% of our users found flights on this route for $367 or less round-trip.
  • It is possible to find flights to Ontario International Airport (ONT) from all three of the major New York airports, which are LaGuardia (LGA), Newark Liberty International Airport (EWR), and John F Kennedy International Airport (JFK). If you are flying with American Airlines, you will likely depart from LGA. When flying with United Airlines, you may depart from EWR.
  • Those that will be departing from Newark Liberty International Airport (EWR) have a few transportation options for going to the airport. When driving, it takes around 30 to 35 minutes. You can opt for public transportation instead, such as bus lines NEC and 62, which will bring you to EWR in around 40 minutes.
  • Direct flights are typically not offered from New York to Ontario International Airport (ONT), so you can expect to have at least one layover. When flying with American Airlines, you may stop in the city of Charlotte. When flying with United Airlines, you may stop in the city of Denver.
  • One of the easiest ways to save money during your travels from New York to Ontario International Airport (ONT) is to travel in Basic Economy, as opposed to regular Economy. Both American Airlines and United Airlines have a Basic Economy cabin for this route.
  • Most Economy tickets for flights from New York to Ontario International Airport (ONT) allow passengers to bring a carry-on suitcase with them for free. American Airlines has a maximum size limit for carry-ons of 18 x 14 x 8 inches, while United Airlines has a maximum size limit of 9 x 14 x 22 inches.

Reviews of the top 5 airlines serving from New York 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 New York 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.
8.0
SouthwestOverall score based on 4250 reviews
7.5Entertainment
8.1Boarding
8.0Comfort
7.0Food
8.6Crew
Airline reviews

The boarding and seat assignment system no longer works for me, but I know it is being replaced. Otherwise, I am good with the overall experience.

8.0 ExcellentRussell, Dec 2025
SAN - OAK
Read more Southwest reviews

The boarding and seat assignment system no longer works for me, but I know it is being replaced. Otherwise, I am good with the overall experience.

The lead steward kept singing about "San Francisco" and hotel California---more annoying than humorous....needs work. Flight was smooth and on time.

Still a fan of open seating. Flight was on schedule and arrived on time. The 737 MAX is very comfortable.

San Diego airport is brand new, spacious, airy and very smooth checkin at SW baggage drop.

Ever since Southwest starting charging for bags, passengers don't want to pay to check their bags, so the gate agents have to beg people to check their roller bags now because there's "not enough space". This was a terrible business move by Southwest.

Delays delays delays. Late taking off, late landing, wait for a gate, etc.

Flight was delayed due to plane not passing inspection And one of the crew had to time out and we had to wait for another one A 3 hour delay

Connecting flight is on time and boarding was a breeze!

Very smooth checking in our luggage with a super pleasant SW agent. I enjoyed a fun entertaining movie.

It was one and half hour late... Not sure if any other experience matters.

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.

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)

My flight was cancelled with no explanation after I had already cleared security. I was given 4 options to rebook, only one being non-stop like I had paid for. I grabbed it. It was 4 plus hours later and then took off even later. Biggest complaint is that I booked early and had an aisle seat. They gave me a "window" seat in front of the exit row, so the seat did not decline. I weigh all of 103 #s and it was tight for me! For what I paid, I feel I was kind of ripped off. I think they should have given me the empty comfort seat for the inconvenience. There was no apology nor any explanation as to why the flight was cancelled. My guess is it benefitted Delta in some way.

Very smooth, on-time, and pleasantly uneventful flight. The team at the gate and on board were professional and genuinely courteous. The pilot kept us well updated throughout, and both takeoff and landing were steady and enjoyable without any drama. Just a good, solid flight. Thank you! 💗

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

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

This route with Delta always has delays or is cancelled. Aircrafts seem smaller and older. I fly Delta quite a bit - haven’t had issues with the international flights. But this route has always been the troublesome one

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 New York to Ontario

Information on your arrival and departure airports