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$130 Cheap Flights from Ontario Intl. Airport (ONT) to Newark Liberty Intl. Airport (EWR)

View $130 flight on Mon, Oct 19, 2026Opens in a new window

Popular airlines from Ontario Intl. Airport (ONT) to Newark Liberty Intl. Airport (EWR)

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Cheap Flights from Ontario Intl. Airport to Newark Liberty Intl. Airport (ONT-EWR)

Prices were available within the past 7 days and start at $130 for one-way flights and $293 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Mon, Oct 19 - Fri, Oct 23
ONT
Ontario
EWR
New York
$293 Roundtrip, found 1 hour ago
$293
Roundtrip
found 1 hour ago
Select Frontier Airlines flight, departing Mon, Oct 19 from Ontario to New York, returning Fri, Oct 23, priced at $293 found 1 hour ago
Frontier Airlines
Mon, Oct 19 - Thu, Oct 22
ONT
Ontario
EWR
New York
$317 Roundtrip, found 5 hours ago
$317
Roundtrip
found 5 hours ago
Select Frontier Airlines flight, departing Mon, Oct 19 from Ontario to New York, returning Thu, Oct 22, priced at $317 found 5 hours ago
Frontier Airlines
Mon, Sep 21 - Thu, Sep 24
ONT
Ontario
EWR
New York
$318 Roundtrip, found 1 hour ago
$318
Roundtrip
found 1 hour ago
Select Frontier Airlines flight, departing Mon, Sep 21 from Ontario to New York, returning Thu, Sep 24, priced at $318 found 1 hour ago
Alaska Airlines
Fri, Oct 16 - Fri, Oct 23
ONT
Ontario
EWR
New York
$329 Roundtrip, just found
$329
Roundtrip
just found
Select Alaska Airlines flight, departing Fri, Oct 16 from Ontario to New York, returning Fri, Oct 23, priced at $329 just found
Alaska Airlines
Mon, Oct 19 - Fri, Oct 23
ONT
Ontario
EWR
New York
$334 Roundtrip, found 1 hour ago
$334
Roundtrip
found 1 hour ago
Select Alaska Airlines flight, departing Mon, Oct 19 from Ontario to New York, returning Fri, Oct 23, priced at $334 found 1 hour ago
Frontier Airlines
Mon, Oct 19 - Tue, Oct 27
ONT
Ontario
EWR
New York
$335 Roundtrip, found 19 hours ago
$335
Roundtrip
found 19 hours ago
Select Frontier Airlines flight, departing Mon, Oct 19 from Ontario to New York, returning Tue, Oct 27, priced at $335 found 19 hours ago
Delta
Tue, Oct 20 - Fri, Oct 23
ONT
Ontario
EWR
New York
$339 Roundtrip, found 5 hours ago
$339
Roundtrip
found 5 hours ago
Select Delta flight, departing Tue, Oct 20 from Ontario to New York, returning Fri, Oct 23, priced at $339 found 5 hours ago
Alaska Airlines
Mon, Oct 19 - Fri, Oct 23
ONT
Ontario
EWR
New York
$339 Roundtrip, found 1 hour ago
$339
Roundtrip
found 1 hour ago
Select Alaska Airlines flight, departing Mon, Oct 19 from Ontario to New York, returning Fri, Oct 23, priced at $339 found 1 hour ago
American Airlines
Fri, Oct 16 - Fri, Oct 23
ONT
Ontario
EWR
New York
$344 Roundtrip, just found
$344
Roundtrip
just found
Select American Airlines flight, departing Fri, Oct 16 from Ontario to New York, returning Fri, Oct 23, priced at $344 just found
United
Sat, Jan 9 - Sat, Jan 16
ONT
Ontario
EWR
New York
$374 Roundtrip, found 7 hours ago
$374
Roundtrip
found 7 hours ago
Select United flight, departing Sat, Jan 9 from Ontario to New York, returning Sat, Jan 16, priced at $374 found 7 hours ago

Alternative airports near New York

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to John F. Kennedy Intl. JFK. Cheapest option available. Average driving time to city center is 24 minutes. Flights from $327
JFK
John F. Kennedy Intl.
Cheapest
Average driving time to city center24 min
Flights from $327
Select flight to LaGuardia LGA. Cheapest option available. Average driving time to city center is 16 minutes. Flights from $327
LGA
LaGuardia
Cheapest
Average driving time to city center16 min
Flights from $327

Frequently asked questions

How much does a flight from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Newark Liberty Intl. Airport (EWR) cost?
You can find cheap one-way flights from $130 and cheap return flights from $293 Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Newark Liberty Intl. Airport (EWR) with Expedia. One-way flights generally range between $209 and $1334, and roundtrip flights usually range from $398 to $1827. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Newark Liberty Intl. Airport (EWR) ticket fares go up or down.*Typical price ranges based on flights available on Expedia in the last year. Prices include multi-airline options.
What is the cheapest month to fly from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Newark Liberty Intl. Airport (EWR)?
February is the cheapest month to fly from Ontario (ONT) to Newark (EWR), with average return fares around $395. This price is about 14% lower than the average throughout the year, as demand is generally lower during the winter months. Other cheap months to fly from Ontario to Newark include September and October.*Averages based on flights available on Expedia in the last year.
Which airlines fly direct from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Newark Liberty Intl. Airport (EWR)?
Enter ONT to EWR and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
What is the cheapest airline that flies from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Newark Liberty Intl. Airport (EWR)?
Frontier Airlines is one of the cheapest airlines offering connecting flights from Los Angeles - Ontario Intl. (ONT) to Liberty Intl. (EWR), with round-trip tickets starting from around $364 with a layover in Denver Intl. (DEN). Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.*Prices based on flights available on Expedia in the last year.
How do I find cheap flights from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Newark Liberty Intl. Airport (EWR)?
To find a cheap flight from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Newark Liberty Intl. Airport (EWR), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best time to fly from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Newark Liberty Intl. Airport (EWR)?
The best time to fly from Ontario, CA (ONT) to Newark Liberty Intl. Airport (EWR) is in February or September. These months are the cheapest, with return flights averaging around $395. February is ideal for avoiding peak travel times, while September offers a pleasant transition into fall. This information is based on booking data from the past year.*Prices based on flights available on Expedia in the last year.
What is the earliest flight from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Newark Liberty Intl. Airport (EWR)?
The earliest flight from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Newark Liberty Intl. Airport (EWR) typically departs at around 12:55 AM, operated by American Airlines. This is a seasonal service active in September. An early departure allows you to arrive in Newark with plenty of time to spare. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What are the most popular departure times for flights from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Newark Liberty Intl. Airport (EWR)?
For flights from Los Angeles Ontario International Airport (ONT) to Newark Liberty International Airport (EWR), the most popular departure times are in the early morning, from 6am to 9am. About 38% of passengers prefer this time window. Major airlines like United Airlines, American Airlines, and Delta Air Lines operate flights during this period. Many travelers choose this timing to arrive in New York with plenty of time to spare for their plans.
How long does it take to fly from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Newark Liberty Intl. Airport (EWR)?
Flying from ONT to EWR with a connection usually takes about 8 hours, traveling roughly 2,402 miles. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Newark Liberty Intl. Airport (EWR)?
Business class seats are offered on the ONT to EWR route with United Airlines.First class cabins are available on:

  • United Airlines
  • Delta Air Lines
  • American Airlines

How do I earn miles on a Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Newark Liberty Intl. Airport (EWR) flight with Expedia?
It's easy to earn miles on a Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Newark Liberty Intl. Airport (EWR) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for Newark from Los Angeles - Ontario Intl. (ONT)?
From Los Angeles - Ontario Intl. (ONT), you can fly into Liberty Intl. (EWR) to reach Newark. Some flights may connect through major hubs like Portland Intl. (PDX), Seattle - Tacoma Intl. (SEA), Denver Intl. (DEN) before reaching Newark. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Newark Liberty Intl. Airport (EWR) at the last minute?
Typically, booking a last minute flight from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Newark Liberty Intl. Airport (EWR) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Newark Liberty Intl. Airport (EWR) flight and hotel package?
Securing a Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Newark Liberty Intl. Airport (EWR) Newark Vacation Packages is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Newark Liberty Intl. Airport (EWR)?
If you booked your Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Newark Liberty Intl. Airport (EWR) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Ontario Intl. Airport
Destination airport
Newark Liberty Intl. Airport
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, United
Roundtrip price
$293
Distance
2402 mi

Book with confidence

Ontario Intl. Airport to Newark Liberty Intl. Airport Flights

The cheapest times to fly from Ontario Intl. Airport to Newark Liberty Intl. Airport

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Ontario Intl. Airport to Newark Liberty Intl. Airport are during the month of October. You can find some of the cheapest flights from Ontario Intl. Airport to Newark Liberty Intl. Airport with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Ontario Intl. Airport to Newark Liberty Intl. Airport

Sunday is one of the best days to book for cheap flights from Ontario Intl. Airport to Newark Liberty Intl. Airport: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Ontario Intl. Airport to Newark Liberty Intl. Airport

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Ontario Intl. Airport to Newark Liberty Intl. Airport in 2026. You can also book with separate airlines for your outbound and return journeys, from $130 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Ontario Intl. Airport to Newark Liberty Intl. Airport flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Ontario Intl. Airport to Newark Liberty Intl. Airport airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Ontario Intl. Airport to Newark Liberty Intl. Airport Flights

*Flight schedules are subject to change.

*Available to One Key members.

 

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