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ONT - EWR

$128 Find cheap flights from Ontario to Newark Liberty 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 Newark departing on 7/4. 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
0 bags
Thu 6/27
Thu 7/4

Search hundreds of travel sites at once for deals on flights to Newark Liberty Airport

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Ontario to Newark.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Ontario to Newark.
In the last 7 days travelers have searched 42,816,550 times on KAYAK, and here is why:

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Cheap flight deals from Ontario to Newark (ONT-EWR)

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Ontario to Newark 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 and deals for you by selecting your travel dates.
Choose your dates
11:23 am - 12:57 amONT-EWR
10h 34m1 stop
6:59 pm - 11:59 pmEWR-ONT
8h 00m1 stop
$256Delta
Find Deal
Sat, Aug 3 - Sat, Aug 17
6:50 am - 7:04 pmONT-EWR
9h 14m1 stop
4:13 pm - 10:57 pmEWR-ONT
9h 44m1 stop
$261Delta
Find Deal
Sat, Aug 3 - Thu, Aug 8
6:25 pm - 5:41 amONT-EWR
8h 16m1 stop
6:30 am - 12:32 pmEWR-ONT
9h 02m1 stop
$262United Airlines
Find Deal
Wed, Aug 28 - Sat, Aug 31
5:00 pm - 8:48 amONT-EWR
12h 48m2 stops
4:13 pm - 10:57 pmEWR-ONT
9h 44m1 stop
$266Delta
Find Deal
Wed, Aug 14 - Thu, Aug 22
5:00 pm - 8:48 amONT-EWR
12h 48m2 stops
2:30 pm - 11:59 pmEWR-ONT
12h 29m2 stops
$271Delta
Find Deal
Wed, Aug 14 - Thu, Aug 22
11:11 pm - 8:59 amONT-EWR
6h 48m1 stop
10:49 am - 5:48 pmEWR-ONT
9h 59m1 stop
$285American Airlines
Find Deal
Tue, Oct 29 - Tue, Nov 5
8:10 am - 7:00 pmONT-EWR
7h 50m1 stop
8:57 am - 1:25 pmEWR-ONT
7h 28m1 stop
$311American Airlines
Find Deal
Thu, Oct 3 - Wed, Oct 9
6:00 am - 7:06 pmONT-EWR
10h 06m1 stop
2:32 pm - 9:31 pmEWR-ONT
9h 59m1 stop
$326United Airlines
Find Deal
Tue, Aug 13 - Tue, Aug 20
6:00 am - 6:29 pmONT-EWR
9h 29m1 stop
7:02 am - 3:20 pmEWR-ONT
11h 18m1 stop
$363Alaska Airlines
Find Deal
Wed, Nov 6 - Tue, Nov 12
6:00 am - 6:29 pmONT-EWR
9h 29m1 stop
7:02 am - 3:20 pmEWR-ONT
11h 18m1 stop
$370Alaska Airlines
Find Deal
Wed, Oct 30 - Wed, Nov 6

Flights from Ontario to Newark - Travel Insights & Trends

Get data-powered insights and trends into flights from Ontario to Newark 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 Newark Liberty Airport?

The average price of all flights from Ontario to Newark Airport clicked on KAYAK for each day over the last 12 months.
Your flight ticket price will generally be cheaper if you fly to Newark Liberty Airport on a Tuesday and more expensive on a Monday. On your return trip to Ontario, you should consider flying back on a Tuesday, and avoid Sundays for better deals.

What is the cheapest month to fly from Ontario to Newark Airport?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Ontario to Newark 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 Newark Airport is September, where tickets cost $276 on average. On the other hand, the most expensive months are June and December, where the average cost of tickets is $418 and $418 respectively.

How far in advance should I book a flight from Ontario to Newark Airport?

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from Ontario to Newark Airport, removes the top 0.1% to account for outliers, and then takes the average of all the values for each month.
To get a below average price on the flight from Ontario to Newark Airport, you should book around 2 weeks before departure. For the absolute cheapest price, our data suggests you should book 55 days before departure.

Which airlines provide the cheapest flights from Ontario to Newark Liberty Airport?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
In the past 3 days, the cheapest one-way tickets to Newark Liberty Airport from Ontario were found on Delta ($128) and Alaska Airlines ($139), and the lowest round-trip tickets were found on Delta ($256) and United Airlines ($262).

Good to know

Low season

January

High season

December

Cheapest flight

$128
Best time to beat the crowds with an average 11% drop in price.
Most popular time to fly and prices are also 1% lower on average.
Flight from Ontario to Newark Liberty Airport

When to book flights from Ontario to Newark

Are your dates flexible? Find out the best times to travel from Ontario to Newark 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 Newark Liberty Airport flights

  • What is the cheapest flight from Ontario to Newark Airport?

    In the last 3 days, the lowest price for a flight from Ontario to Newark Airport was $128 for a one-way ticket and $256 for a round-trip.

  • Do I need a passport to fly between Ontario and Newark Liberty Airport?

    No

  • Which aircraft models fly most regularly from Ontario to Newark Liberty Airport?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Ontario to Newark Liberty Airport?

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

  • What is the most popular layover when flying to Newark Liberty Airport from Ontario?

    Phoenix is the most popular layover city among KAYAK users traveling from Ontario to Newark Liberty Airport.

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

    The two airlines most popular with KAYAK users for flights from Ontario to Newark are Delta and Alaska Airlines. With an average price for the route of $426 and an overall rating of 8.0, Delta is the most popular choice. Alaska Airlines is also a great choice for the route, with an average price of $483 and an overall rating of 8.0.

  • How does KAYAK find such low prices on flights from Ontario to Newark Liberty 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 Newark Liberty Airport.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Newark Liberty 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 Newark Liberty 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 Newark Liberty Airport with an airline and back to Ontario with another airline. Booking your flights between Ontario and EWR 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 Newark Liberty 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 Newark Liberty Airport from Ontario up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top 5 airlines serving from Ontario to Newark

 
See real verified KAYAK customer reviews for airlines flying from Ontario to Newark. 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 Newark? 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
DeltaOverall score based on 10502 reviews
8.6Crew
8.2Boarding
7.4Food
7.9Comfort
8.0Entertainment
Airline reviews

Our flight to Zurich was delayed by almost 3 hours, so we missed our next flight. There was no indication it would be delayed this much. We were told the gate had changed and then it apparently took over 2 hours to load the "catering" on the plane. We were not compensated in any way for the trouble.

2.0 MediocreLisa, May 2024AUS - JFK
Read more about Delta reviews

Our flight to Zurich was delayed by almost 3 hours, so we missed our next flight. There was no indication it would be delayed this much. We were told the gate had changed and then it apparently took over 2 hours to load the "catering" on the plane. We were not compensated in any way for the trouble.

The 1st class male crew member was very pleasant - the short female with round glasses , maybe in 50’s had no personality- never spoke when delivering my food, drink, & never smiled the whole trip! In fact looked annoyed when the boarding proses was happening- I would never hire this woman - unfriendly . Have never dealt with a crew member like her-

A regional sized plane was used for a cross country flight with no overhead bin space. I had to "pink check" my laptop and my medications. I was NOT pleased!!!!

Best airline! Always friendly and welcoming. Skyclub was great and loved the fast free wifi on board. I also love that you can pre-order your meal on the app!

The gate area was incredibly short staffed, with one representative manning 4-5 flights, which caused a 3 hr delay in boarding even though the plane was all ready to leave. Other flights also were delayed because of this. The flight crew was awesome and I feel bad for the only gate worker on call, but Delta needs to hire more employees.

It was a crowded flight. They did the best they could.

Boarding was great. The flight landed early. It took the crew over an hour and a half to bring out drinks. I paid to upgrade my seat to Comfort+ only to be near a crying/screaming baby who was seldom quiet. Noise-cancelling earbuds didn’t even help. Waste of money to upgrade.

Boarding was a sh!t show. JFK BOARDING was awful. The agent called three sections at a time Clogging the area then yelling at people to not block the walk way. How are you going to call delta one , premium select and comfort plus at once and the yell at highest paying passengers. Need to do a lot better and the flight attendants in the galley need to understand that their voices travel. They were talking about others and everyone in the cabin heard them

The main person that was coordinating everything was a short white/light skin Spanish man and he was very rude. It honestly made me feel like it was everyone’s First day at work. His announcements were very not reasonable and they did not make sense. The stewardess on the flight that made the announcements she didn’t even know what she was talking about she sounded inebriated. There were no snacks or drinks on our flight there wasn’t even much turbulence. This flight was not enjoyable nor was it what a Delta flight should be and just this past week I flew with Delta 3 times.

Horrible. First delta flight was delayed. I ran to my connecting flight and arrived to the gate 13 mins before departure. I told the gate agent “I’m here”, she told me flight was closed while giving my already confirmed seat to an stand by passenger. I said again “madam, I’m here with my confirmed seat” and she said “no you’re not here@ and gave two stand by people a boarding pass and let them board. I asked “madam, why do you do that?”, and she repeated “you’re not here”. That was very rude. I’m disappointed of delta. It used to have a good customer service. Things have changed, but not for good.

Flight was delayed by almost 5 hours. Suitcase was not loaded despite the flight being near empty (my colleagues’ suitcases did reach JFK, unlike mine). Had to argue on phone to get JetBlue to deliver the case to my hotel. Never again

Great. Loved that there was WiFi on flight to keep in touch and excellent service of beverages and snacks.

great flight. Pilot was communicative, flight attendants were excellent. Really nice experience except my tv didn’t work.

Overall, the flight was better than the flight I took to go to Florida, which had a bunch of problems. The crew is really nice and the plane was new so it had a small problem when we were on the runway, but the flight itself was great. They even made some time back up, which is always a good thing.

Everything was good except for deplaning in NY. Took way too long!!

Jet Blue keeps getting iit wrong. 4 hour mechanical delay followed by terrible boarding experience. This is my third horrific jet blue flight in 2024. I am going to try to avoid this loser in the sky

My experience with JetBlue was fantastic! The service was top-notch, the flight was smooth, and the staff were friendly and helpful. I would definitely fly with them again.

no wifi and the aircraft was very old with tiny 4” screens.

After we landed, we were held on the plane for 30 minutes. There was no one at the gate once we landed and we forced to sit on a plan that had already over an hour delayed.

Flawless trip. Pilot came out and introduced himself, welcomed everyone, made a light joke to put everyone at ease. Arrived quite early.

Surprisingly easy! I was hesitant to try this, but the cost swayed me. I actually felt like I had less stress than all the taxiing and possible delays that occur with short regional flights where you spend less time in the air than getting to and from the plane..

We waited to takeoff for about 1 hour delay for a 20 min flight.

Packed in like sardines, very uncomfortable. Sitting the aisle my shoulder was rammed into numerous times by rushing flight attendants. Also flight was very cold.

Your app is impossible to use. I couldn't load it. Then i couldn't open it. When i finally got both those things done -with much help -then i couldn't open the app to install a credit card. The upshot was 4 flights without access to food or drink. When i first tried to download united app some company called starlier opened instead and i would up signing up for some 49 dollar a month music service which i still have not been able to cancel.

Overall it was good. The flight was bumpy at times, but the pilot made us aware every time. As a result, no snacks/drinks were made available. Seats were tight but that’s okay as I had a window seat.

the head jack on my seat didn't work and the power outlet didn't work for my seat

That flight was smooth, and staff we courteous. it was a full flight so very tight. The boarding through security was not properly controlled. it was rushed and the scanning process for our bags, etc. was pilling up at the other end with no time to empty our belonging my personal items almost toppled over on the floor if i hadn't caught it rapidly. Was it just that time, or always like this - cant say. other than that all else was fine.

I liked that we arrived earlier, you could improve your snacks give away

We learned certain countries (a few) require a notarized letter from an ex to give permission for children to travel to those countries with the other spouse together with birth certificates. To find this out one hour before flying—not good. Nowhere is it documented by the airlines though they require it. Make sure about all documentation required.

The best part was we weren’t too delayed. Seating space in economy is insulting and about as uncomfortable as one could expect before mutiny breaks out. Prep for landing happened well over 45 minutes before wheels down: no final garbage pickup and it interrupted those of us who needed tray tables down for dinner, etc.

Worst experience flying American Airlines. I fly with them often, so I was super disappointed in the service I received at gate 30 in LGA on May 24, mid-day. The flight was delayed twice. I was patiently waiting in the American Airlines lounge when I received the notice on my app that the plane was boarding 45 minutes before its newly re-scheduled take off of 4 pm (from the orginal 1:45 pm then 3:00 pm). It took me 5 min to travel from the lounge to the gate and when I arrived there at 3:20 flight gate attendant told me the flight had closed and that they announced for passengers multiple times. I showed them the notification on my app and they were really rude and unempathetic. The person who rescheduled my flight at customer service wasn't any happier but was at least helpful in getting me on the next flight.

Was lucky to have a employee at the AA checkin counter that had compassion and understood they ordeal that we went through with our original flight being diverted, needing to stay in the aircraft and then flying to the original destination; adding hours to the trip and forcing us to miss our connection and our rebooked connection. She was able to get up on standby on the highest priority on the next flight to the closest airport we need to be at and it all worked out despite being many hours late.

I like the boarding process, it was fast. The seat doesn’t have a TV for a long flight and food wasn’t served, just snacks.

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

I arrived to the airport 2 hours before my American Airlines flight was scheduled to take off. I have TSA pre-check. The airport was crazy packed when I arrived. After momentarily standing in the pre-check line, the TSA agent said that I am not pre-check. Of course I said that I am because I entered my KTN number on all my traveling sites and programs. I had to get out of line and go back to the AA counter to discover that American Airlines did not add my KTN to my boarding pass. I had to call TSA to find out my number, then have AA enter it onto my boarding pass. The emblem would not load onto my boarding pass. By this time, I decided to use my Clear in order to get through TSA but the line was ridiculous long. By the time I made through TSA, I missed my 11:08am flight and was re-booked for the 5:30pm. This is after the AA employee told me I should have gotten to the airport early. AA use to be a dependable airline not I use them only if I have too.

Horrible people at the gate, they force me to check in my carry on, even thought no one behind me has to do it. I had to get out of the airport in NY to get my bag and go thru security again on my way to Honk Kong. The worst part is the employee threatened me with loosing the flights if don’t comply.

Cut off carry ons, had to check, got on and there was plenty of bin space. Disappointing.

One of the worst flights I have ever taken Delayed over an hour without communication from the crew; very scary Entertainment not working Crew NASTY cabin cold

May never fly American again Delay in take off WITHOUT EXPLANATION Cabin freezing Crew NASTY entertainment did not work entire flight

It was wonderful upgrading to first. Plane was so cold thou. Crew was great. Wish there was a food option in first for such a long flight. Doesnt matter the time of day. Chintzy.

This was the return leg of my journey with Spirit Airlines. Despite its reputation, I found no issues as it got me from point A to B safely and without delay, especially with no mechanical delays, which is fantastic in my book! The staff, from ground crew to cabin crew, were all pleasant and hassle-free. The flight was smooth from takeoff to landing. I have absolutely no complaints about this no-frills airline!

Absolutely terrible. The boarding process had zero organization. Mobs of people trying to board. People were climbing over my child's stroller with her in it. No families were boarded first. Boarding was delayed with no reasoning or notification that it would be late. We were then stuck on the plane for 45 minutes after landing. Then waited over two hours for our luggage. There was zero communication with the travelers. Never have I experienced such I professionalism and disgrace of others. Extremely disappointed.

I had no legroom, although I paid for extra legroom. I could barely put my bag in front of my feet and under the seat. The Wi-Fi was horrible. In fact the flight attendant said that they had to reboot it and see if it was going to work and never did.

Overall it was a miserable experience... I will never fly spirit for more than a 3 hour flight or overnight.

Flight attendants heavily pushed their affinity credit card. Very annoying

Very bad, delayed flight. I was offered 2 vouchers for inconvenience, but those vouchers aren’t usable. Spirit airlines is betraying people.

They didn’t let me get my boarding pass through the app because I have a lap infant. The ticket said to see a gate agent but there was no gate agent available. I was supposed to go to the kiosk. Ended up missing my flight and they said that I never checked in to my flight so there was nothing that could be done. I will never fly spirit again. Not even worth the hassle and poor customer service.

I like the price. I did not like the seats: very little space and not reclining.

I like strict carry on policy. Quick to board, quick to leave. Less time at gate and get there quicker

comfortable flight. not fond of the idea to pay for every little detail. baggage checkin or carry ons, basic snack, or some sort of basic entertainment/wifi. would be nice to offer these as perks and stop with the penny pinching.

Book cheap flights from Ontario to Newark

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Ontario to Newark found on KAYAK in the last 72 hours.
7/4Thu
1 stopDelta
10h 28mONT-EWR
$128
8/26Mon
1 stopDelta
10h 34mONT-EWR
$133
7/30Tue
1 stopAlaska Airlines
11h 33mONT-EWR
$139
10/29Tue
1 stopAmerican Airlines
6h 48mONT-EWR
$142
7/5Fri
1 stopAmerican Airlines
7h 27mONT-EWR
$143
8/27Tue
1 stopUnited Airlines
7h 37mONT-EWR
$163
9/11Wed
1 stopUnited Airlines
10h 10mONT-EWR
$164
11/8Fri
1 stopAlaska Airlines
9h 28mONT-EWR
$166
9/5Thu
3 stops
20h 26mONT-EWR
$454
8/25Sun
3 stops
20h 26mONT-EWR
$504

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Last minute flights from Ontario to Newark

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights from Ontario to Newark that are departing in the next 10 days.
6/1Sat
multi-stopDelta
8h 49mONT-EWR
6/3Mon
multi-stopDelta
8h 03mEWR-ONT
$477
6/1Sat
multi-stopDelta
8h 49mONT-EWR
6/3Mon
multi-stopDelta
11h 43mEWR-ONT
$482
5/31Fri
multi-stopDelta
7h 20mONT-EWR
6/17Mon
multi-stopDelta
7h 20mEWR-ONT
$486
5/30Thu
multi-stopDelta
10h 59mONT-EWR
6/6Thu
multi-stopDelta
9h 42mEWR-ONT
$491
6/1Sat
multi-stopAmerican Airlines
8h 03mONT-EWR
6/4Tue
multi-stopAmerican Airlines
11h 58mEWR-ONT
$502
6/1Sat
multi-stopAmerican Airlines
10h 52mONT-EWR
6/3Mon
multi-stopAmerican Airlines
8h 32mEWR-ONT
$503
5/29Wed
multi-stopAlaska Airlines
9h 29mONT-EWR
6/5Wed
multi-stopAlaska Airlines
11h 07mEWR-ONT
$543
6/1Sat
multi-stopAlaska Airlines
10h 35mONT-EWR
6/5Wed
multi-stopAlaska Airlines
11h 07mEWR-ONT
$546
5/29Wed
multi-stopUnited Airlines
8h 15mONT-EWR
6/5Wed
multi-stopUnited Airlines
9h 47mEWR-ONT
$577
5/31Fri
multi-stopUnited Airlines
9h 20mONT-EWR
6/3Mon
multi-stopUnited Airlines
9h 47mEWR-ONT
$585

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Ontario - Newark Liberty Airport Flights

Departure:

Ontario (ONT)United States

Destination:

Newark Liberty Airport (EWR)United States

Return flight deals:

Newark Liberty Airport - Ontario

Cabin classes: