£114 Cheap Flights from Newark Liberty Intl. Airport (EWR) to Ontario Intl. Airport (ONT)

View £114 flight on Sat, 22 Aug 2026Opens in a new window

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

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

Prices were available within the past 7 days and start at £114 for one-way flights and £227 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Sun, 30 Aug - Tue, 15 Sept
EWR
New York
ONT
Ontario
£227 Return, found 10 hours ago
£227
Return
found 10 hours ago
Select Delta flight, departing Sun, 30 Aug from New York to Ontario, returning Tue, 15 Sept, priced at £227 found 10 hours ago
Alaska Airlines
Mon, 5 Oct - Tue, 20 Oct
EWR
New York
ONT
Ontario
£246 Return, found 10 hours ago
£246
Return
found 10 hours ago
Select Alaska Airlines flight, departing Mon, 5 Oct from New York to Ontario, returning Tue, 20 Oct, priced at £246 found 10 hours ago
Alaska Airlines
Thu, 17 Sept - Thu, 1 Oct
EWR
New York
ONT
Ontario
£265 Return, found 10 hours ago
£265
Return
found 10 hours ago
Select Alaska Airlines flight, departing Thu, 17 Sept from New York to Ontario, returning Thu, 1 Oct, priced at £265 found 10 hours ago
Delta
Tue, 12 May - Tue, 19 May
EWR
New York
ONT
Ontario
£278 Return, found 6 days ago
£278
Return
found 6 days ago
Select Delta flight, departing Tue, 12 May from New York to Ontario, returning Tue, 19 May, priced at £278 found 6 days ago
Delta
Tue, 12 May - Tue, 19 May
EWR
New York
ONT
Ontario
£290 Return, found 6 days ago
£290
Return
found 6 days ago
Select Delta flight, departing Tue, 12 May from New York to Ontario, returning Tue, 19 May, priced at £290 found 6 days ago
Delta
Sat, 1 Aug - Fri, 21 Aug
EWR
New York
ONT
Ontario
£294 Return, found 10 hours ago
£294
Return
found 10 hours ago
Select Delta flight, departing Sat, 1 Aug from New York to Ontario, returning Fri, 21 Aug, priced at £294 found 10 hours ago
American Airlines
Tue, 12 May - Tue, 19 May
EWR
New York
ONT
Ontario
£297 Return, found 6 days ago
£297
Return
found 6 days ago
Select American Airlines flight, departing Tue, 12 May from New York to Ontario, returning Tue, 19 May, priced at £297 found 6 days ago
American Airlines
Tue, 12 May - Tue, 19 May
EWR
New York
ONT
Ontario
£298 Return, found 6 days ago
£298
Return
found 6 days ago
Select American Airlines flight, departing Tue, 12 May from New York to Ontario, returning Tue, 19 May, priced at £298 found 6 days ago
Delta
Tue, 12 May - Tue, 19 May
EWR
New York
ONT
Ontario
£308 Return, found 6 days ago
£308
Return
found 6 days ago
Select Delta flight, departing Tue, 12 May from New York to Ontario, returning Tue, 19 May, priced at £308 found 6 days ago
United
Tue, 12 May - Tue, 19 May
EWR
New York
ONT
Ontario
£356 Return, found 6 days ago
£356
Return
found 6 days ago
Select United flight, departing Tue, 12 May from New York to Ontario, returning Tue, 19 May, priced at £356 found 6 days ago

Frequently asked questions

How much does a flight from Newark Liberty Intl. Airport (EWR) to Ontario, CA (ONT-Los Angeles - Ontario Intl.) cost?
One-way flights typically cost between £600 and £1,668 and return flights often range between £600 and £1,668. 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 Anaa (AAA) to Toronto, ON (YYZ-Pearson Intl.) ticket fares go up or down.
What is the cheapest month to fly from Newark Liberty Intl. Airport (EWR) to Ontario, CA (ONT-Los Angeles - Ontario Intl.)?
September is typically the cheapest month to fly from Newark Liberty Intl. Airport (EWR) to Ontario, CA (ONT-Los Angeles - Ontario Intl.), with average return fares of approximately £502. This is about 23% lower than the average price throughout the year. September often sees lower prices as the summer travel rush ends and before the holiday season begins, leading to reduced demand. Other cheap months to fly from Newark Liberty Intl. Airport (EWR) to Ontario, CA (ONT-Los Angeles - Ontario Intl.) include January and August.
How do I find cheap flights from Newark Liberty Intl. Airport (EWR) to Ontario, CA (ONT-Los Angeles - Ontario Intl.)?
To find a cheap flight from Newark Liberty Intl. Airport (EWR) to Ontario, CA (ONT-Los Angeles - Ontario Intl.), 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 Newark Liberty Intl. Airport (EWR) to Ontario, CA (ONT-Los Angeles - Ontario Intl.)?
The best time to fly from Newark Liberty Intl. Airport (EWR) to Ontario, CA (ONT-Los Angeles - Ontario Intl.) is January. This month is both one of the cheapest and most popular, offering a great balance of value and flight availability. You can expect return flights to be around £502. While September is also a cheap month, January provides the added benefit of more flight options, making it easier to find a schedule that suits you. This information is based on booking data from the past year.
How many flights per day from Newark Liberty Intl. Airport (EWR) to Ontario, CA (ONT-Los Angeles - Ontario Intl.)?
There are approximately 68 connecting flights per day from Newark Liberty Intl. Airport (EWR) to Ontario, CA (ONT-Los Angeles - Ontario Intl.). Some common connection points include Seattle - Tacoma Intl. (SEA), Portland Intl. (PDX), and O'Hare Intl. (ORD).
What is the earliest flight from Newark Liberty Intl. Airport (EWR) to Ontario, CA (ONT-Los Angeles - Ontario Intl.)?
The earliest flight from Newark Liberty Intl. Airport (EWR) to Ontario, CA (ONT-Los Angeles - Ontario Intl.) typically departs at approximately 5:00 AM local time, operated by American Airlines. This is a seasonal service active in June. An early departure like this can help maximise your time at your destination. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What day of the week has the most flights from Newark Liberty Intl. Airport (EWR) to Ontario, CA (ONT-Los Angeles - Ontario Intl.)?
You'll find the most flights from Newark Liberty Intl. Airport (EWR) to Ontario, CA (ONT-Los Angeles - Ontario Intl.) on a Thursday, with around 41 flights available. This gives you plenty of options for your travel plans. Major airlines on this route include United Airlines, Alaska Airlines, and American Airlines. Flight schedules are consistent throughout the week, with Thursday offering about 10% more flights than other days.
What are the most popular departure times for flights from Newark Liberty Intl. Airport (EWR) to Ontario, CA (ONT-Los Angeles - Ontario Intl.)?
The most popular departure times for flights from Newark Liberty Intl. Airport (EWR) to Ontario, CA (ONT-Los Angeles - Ontario Intl.) are in the morning, from 6am to 9am. About 38% of passengers prefer this time. Many major carriers, including American Airlines, United Airlines and Delta Air Lines, offer flights during this window. This timing works well because it allows you to get an early start on your travel day and arrive at your destination with plenty of time.
How long does it take to fly from Newark Liberty Intl. Airport (EWR) to Ontario, CA (ONT-Los Angeles - Ontario Intl.)?
A flight from EWR to ONT with a layover takes around 8 hours 20 minutes, with the route covering approximately 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 Newark Liberty Intl. Airport (EWR) to Ontario, CA (ONT-Los Angeles - Ontario Intl.)?
Select the "Business class" and "First class" filters when looking for EWR to ONT flights on Expedia. This is the easiest way to compare prices, routes and flight times for your trip.
How do I earn miles on a Newark Liberty Intl. Airport (EWR) to Ontario, CA (ONT-Los Angeles - Ontario Intl.) flight with Expedia?
It's easy to earn miles on a Newark Liberty Intl. Airport (EWR) to Ontario, CA (ONT-Los Angeles - Ontario Intl.) 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 Ontario from Liberty Intl. (EWR)?
From Liberty Intl. (EWR), you can fly directly into Los Angeles - Ontario Intl. (ONT) to reach Ontario. Some flights may connect through major hubs like Seattle - Tacoma Intl. (SEA), O'Hare Intl. (ORD), Los Angeles Intl. (LAX) before reaching Ontario. 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 Newark Liberty Intl. Airport (EWR) to Ontario, CA (ONT-Los Angeles - Ontario Intl.) at the last minute?
Typically, booking a last minute flight from Newark Liberty Intl. Airport (EWR) to Ontario, CA (ONT-Los Angeles - Ontario Intl.) 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 Newark Liberty Intl. Airport (EWR) to Ontario, CA (ONT-Los Angeles - Ontario Intl.) flight and hotel package?
Securing a Newark Liberty Intl. Airport (EWR) to Ontario, CA (ONT-Los Angeles - Ontario Intl.) flight and hotel package 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 Newark Liberty Intl. Airport (EWR) to Ontario, CA (ONT-Los Angeles - Ontario Intl.)?
If you booked your Newark Liberty Intl. Airport (EWR) to Ontario, CA (ONT-Los Angeles - Ontario Intl.) 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
Newark Liberty Intl. Airport
Destination airport
Ontario Intl. Airport
Airlines serving
Alaska Airlines, American Airlines, Delta
Return price
£226
Distance
3843 km

Book with confidence

Compare flights from Newark Liberty Intl. Airport to Ontario Intl. Airport easily and book with confidence

For travelling on business or for pleasure, Expedia makes it easy to book your flights from Newark Liberty Intl. Airport to Ontario Intl. Airport. Operating between them flights per day, 20 airlines cover the route. And fly direct, getting you to Ontario Intl. Airport in just hours. If you have a preferred carrier, use our advanced search tool to find the right flight from Newark Liberty Intl. Airport to Ontario Intl. Airport.  

To make things even better, in the advanced search, you can also choose to fly economy, premium economy, business or first class, select your maximum number of stops, and pick your preferred departure and arrival time. You can also opt for refundable and direct flights. 

Grab a great deal on your flight from Newark Liberty Intl. Airport (EWR) to Ontario Intl. Airport (ONT)

The easiest way to view the best deals on flights from Newark Liberty Intl. Airport to Ontario Intl. Airport today is to enter your travel dates and hit search. From here, you can sort your results by price to see the cheapest flights first. Right now, return flights from Newark Liberty Intl. Airport to Ontario Intl. Airport start at just £227 and range up to £356.  

To find an even better deal, try  

  • being flexible on your dates – midweek flights can be cheaper
  • looking for other airports near Newark Liberty Intl. Airport and Ontario Intl. Airport
  • booking your flight during August, the cheapest month on this route
  • varying your flight times – early morning and late at night are sometimes cheaper 

Why you should book your Newark Liberty Intl. Airport to Ontario Intl. Airport flight with Expedia!

We cater for all flight types, cabin classes and airlines. So whether you’re booking flights from Newark Liberty Intl. Airport to Ontario Intl. Airport for a budget break or a business trip with a bit of pleasure thrown in, we make it easy to secure the seat that’s right for you.  

Thanks to our supersized inventory that offers great choice all in one place, you know you’ll get a great deal with Expedia. Especially if you bundle your flight together with your hotel, you will unlock amazing savings. For added peace of mind, you can choose flexible bookings or filter to find refundable options, so you won’t pay a fee to change your flight.  

Compare flights from Newark Liberty Intl. Airport to Ontario Intl. Airport easily and book with confidence

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