£98 Cheap Flights from Newark Liberty Intl. Airport (EWR) to Ontario (ONT)

View £98 flight on Thu, 18 Sep 2025Opens 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 (ONT)

Prices were available within the past 7 days and start at £98 for one-way flights and £192 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Wed, 29 Oct - Fri, 31 Oct
EWR
New York
ONT
Ontario
£192 Return, found 3 days ago
£192
Return
found 3 days ago
Select American Airlines flight, departing Wed, 29 Oct from New York to Ontario, returning Fri, 31 Oct, priced at £192 found 3 days ago
American Airlines
Wed, 29 Oct - Fri, 31 Oct
EWR
New York
ONT
Ontario
£228 Return, found 3 days ago
£228
Return
found 3 days ago
Select American Airlines flight, departing Wed, 29 Oct from New York to Ontario, returning Fri, 31 Oct, priced at £228 found 3 days ago
American Airlines
Sat, 16 Aug - Sun, 17 Aug
EWR
New York
ONT
Ontario
£241 Return, found 5 days ago
£241
Return
found 5 days ago
Select American Airlines flight, departing Sat, 16 Aug from New York to Ontario, returning Sun, 17 Aug, priced at £241 found 5 days ago
American Airlines
Wed, 29 Oct - Fri, 31 Oct
EWR
New York
ONT
Ontario
£268 Return, found 3 days ago
£268
Return
found 3 days ago
Select American Airlines flight, departing Wed, 29 Oct from New York to Ontario, returning Fri, 31 Oct, priced at £268 found 3 days ago
American Airlines
Sat, 16 Aug - Sun, 17 Aug
EWR
New York
ONT
Ontario
£314 Return, found 5 days ago
£314
Return
found 5 days ago
Select American Airlines flight, departing Sat, 16 Aug from New York to Ontario, returning Sun, 17 Aug, priced at £314 found 5 days ago
United
Wed, 13 Aug - Wed, 20 Aug
EWR
New York
ONT
Ontario
£368 Return, found 1 day ago
£368
Return
found 1 day ago
Select United flight, departing Wed, 13 Aug from New York to Ontario, returning Wed, 20 Aug, priced at £368 found 1 day ago
United
Tue, 12 Aug - Tue, 19 Aug
EWR
New York
ONT
Ontario
£427 Return, found 1 day ago
£427
Return
found 1 day ago
Select United flight, departing Tue, 12 Aug from New York to Ontario, returning Tue, 19 Aug, priced at £427 found 1 day ago
United
Wed, 13 Aug - Wed, 20 Aug
EWR
New York
ONT
Ontario
£442 Return, found 1 day ago
£442
Return
found 1 day ago
Select United flight, departing Wed, 13 Aug from New York to Ontario, returning Wed, 20 Aug, priced at £442 found 1 day ago
United
Wed, 13 Aug - Wed, 20 Aug
EWR
New York
ONT
Ontario
£472 Return, found 1 day ago
£472
Return
found 1 day ago
Select United flight, departing Wed, 13 Aug from New York to Ontario, returning Wed, 20 Aug, priced at £472 found 1 day ago
Alaska Airlines
Mon, 4 Aug - Mon, 11 Aug
EWR
New York
ONT
Ontario
£500 Return, found 1 day ago
£500
Return
found 1 day ago
Select Alaska Airlines flight, departing Mon, 4 Aug from New York to Ontario, returning Mon, 11 Aug, priced at £500 found 1 day ago

Find the cheapest month to fly from New York (EWR) to Ontario (ONT)

September is typically the cheapest month to fly

From £185 - £381 per traveller.

Graph displaying average flight prices per month

Flight from Newark Liberty Intl. Airport to Ontario route information
Origin airport
Newark Liberty Intl. Airport
Destination airport
Los Angeles - Ontario Intl.
Airlines serving
Alaska Airlines, United
Return price
£191
Distance
3843 km
Average flight time
9 hours 41 mins

Compare flights from Newark Liberty Intl. Airport to Ontario 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. Operating between them flights per day, 20 airlines cover the route. And fly direct, getting you to Los Angeles - Ontario Intl. 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 Los Angeles - Ontario Intl..  

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 Los Angeles - Ontario Intl. (ONT)

The easiest way to view the best deals on flights from Newark Liberty Intl. Airport to Ontario 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 Los Angeles - Ontario Intl. start at just £192 and range up to £500.  

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
  • booking your flight during October, 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 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 Los Angeles - Ontario Intl. 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.  

Frequently asked questions

How much is a flight from Newark Airport to Los Angeles - Ontario Intl. Airport (ONT)?
The lowest price advertised for a round-trip flight between Newark Airport and Los Angeles - Ontario Intl. Airport (ONT) is £192. But you better get a move on. This price is based on fares offered within the last 7 days on Expedia for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from EWR to ONT?
Every air carrier has its own set of terms and conditions. If you do decide to cancel, follow the simple instructions on our Customer Service Portal.
How do I find cheap flights from Newark Airport to Ontario Airport that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for Liberty Intl. Airport (EWR) to Ontario Airport flights, you'll see a "no change fees" filter for you to select.
How far is the flight from Newark Airport to ONT?
Around 3,900 kilometres separates Newark and Ontario, so pack something to help you fill in a couple of hours. That thrilling novel you haven't had time to start will be ideal.
Which airlines fly direct from EWR to ONT?
Flying directly between EWR and ONT isn't possible at present. However, you'll still be able to book a flight to Ontario with at least one stop.
Are Newark Airport to Los Angeles - Ontario Intl. Airport (ONT) flight tickets cheaper when they're purchased at the last minute?
Airline tickets from EWR to ONT are available up to a year prior to departure on Expedia. And although you may occasionally nab fantastic last-minute deals, it's never something you can count on. Also, booking your flights ahead of time means you'll have more options — and you can avoid getting trapped in the dreaded middle seat! We're always updating our fares to bring you the biggest bargains, so keep checking in for all the latest specials.

Explore a world of travel with Expedia

Ontario Airports

Los Angeles

Newark Liberty Intl. Airport to Los Angeles Intl.
£147.30

Orange County

Newark Liberty Intl. Airport to John Wayne
£226.90

Burbank

Newark Liberty Intl. Airport Airports

New York

John F. Kennedy Intl. to Ontario
£189.00
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