$119 Cheap United flights Newark Liberty Intl. Airport (EWR) to Ontario (ONT)

View $119 flight on Wed, Oct 29, 2025Opens in a new window

$119 Cheap United flights Newark Liberty Intl. Airport (EWR) to Ontario (ONT)

Prices were available within the past 7 days and start at $119 for one-way flights and $249 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Tue, Dec 9 - Wed, Dec 10
EWR
New York
ONT
Ontario
$249 Roundtrip, found 2 days ago
$249
Roundtrip
found 2 days ago
Select United flight, departing Tue, Dec 9 from New York to Ontario, returning Wed, Dec 10, priced at $249 found 2 days ago
United
Wed, Oct 29 - Wed, Nov 5
EWR
New York
ONT
Ontario
$251 Roundtrip, found 18 hours ago
$251
Roundtrip
found 18 hours ago
Select United flight, departing Wed, Oct 29 from New York to Ontario, returning Wed, Nov 5, priced at $251 found 18 hours ago
United
Tue, Dec 9 - Wed, Dec 10
EWR
New York
ONT
Ontario
$252 Roundtrip, found 2 days ago
$252
Roundtrip
found 2 days ago
Select United flight, departing Tue, Dec 9 from New York to Ontario, returning Wed, Dec 10, priced at $252 found 2 days ago
United
Wed, Oct 8 - Tue, Oct 14
EWR
New York
ONT
Ontario
$266 Roundtrip, found 8 hours ago
$266
Roundtrip
found 8 hours ago
Select United flight, departing Wed, Oct 8 from New York to Ontario, returning Tue, Oct 14, priced at $266 found 8 hours ago
United
Wed, Sep 24 - Fri, Sep 26
EWR
New York
ONT
Ontario
$269 Roundtrip, found 18 hours ago
$269
Roundtrip
found 18 hours ago
Select United flight, departing Wed, Sep 24 from New York to Ontario, returning Fri, Sep 26, priced at $269 found 18 hours ago
United
Wed, Nov 12 - Wed, Dec 3
EWR
New York
ONT
Ontario
$271 Roundtrip, found 1 day ago
$271
Roundtrip
found 1 day ago
Select United flight, departing Wed, Nov 12 from New York to Ontario, returning Wed, Dec 3, priced at $271 found 1 day ago
Flights from Newark Liberty Intl. Airport (EWR) to Ontario (ONT)
Origin airport
Newark Liberty Intl. Airport
Destination airport
Los Angeles - Ontario Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Hawaiian Airlines, United
Popular airline
American Airlines
Distance
2402 mi

Frequently asked questions

How much is a United Airlines flight from Liberty Intl. Airport (EWR) to Los Angeles - Ontario Intl. Airport (ONT)?
Finding cheap one-way United Airlines flights from EWR to ONT from $119 on Expedia couldn't be easier — just filter by "Price (lowest to highest)." Alternatively, check out our affordable round-trip fares from $249 for your next exciting adventure.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.
What is the cheapest month to fly from EWR to ONT with United Airlines?
United Airlines flights to Ontario tend to be more affordable in the quieter months of January and April. Whether you're after a round-trip or one-way ticket, you could find a better deal then.
What is the cheapest time to book flights from Liberty Intl. Airport (EWR) to Los Angeles - Ontario Intl. Airport (ONT) with United Airlines?
For cheap United Airlines fares from Liberty Intl. Airport (EWR) to Los Angeles - Ontario Intl. Airport (ONT), start searching one to three months before your planned departure. Securing domestic flights 34 to 86 days in advance could save you 25% compared to booking just 6 to 12 days ahead. The day you book can also affect the cost. Sunday is generally the most affordable, while Monday is often the most expensive for domestic flights. You can save 6% on average by choosing to book on a Sunday.**Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC's global airline sales database.
Does United Airlines fly nonstop from Liberty Intl. Airport (EWR) to Los Angeles - Ontario Intl. Airport (ONT)?
To see if there's a direct journey from EWR to ONT with United Airlines or any other carriers, use our "Nonstop" filter when looking for tickets.
What is the earliest United Airlines flight from EWR to ONT?
To find the earliest departure from EWR to ONT with United Airlines, filter your results by "Morning" and "Early Morning." Choosing an early flight usually means cancellations are less likely.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports does United Airlines fly into in Ontario?
Take a United Airlines flight from Liberty Intl. Airport (EWR) to Ontario, and you'll most likely land at Los Angeles - Ontario Intl. Airport (ONT). This is the airline's main hub here.
Why fly with United Airlines from EWR to ONT?
Fly from EWR to ONT with United Airlines and you can look forward to a host of benefits starting with a rewarding loyalty program. When booking through Expedia as a United Mileage Plus and One Key™ member, you can also earn OneKeyCash™* to spend on select future travel purchases.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.
Can I change or cancel my United Airlines flight from Liberty Intl. Airport (EWR) to Los Angeles - Ontario Intl. Airport (ONT)?
Changes are typically free within 24 hours of booking, but your airline may charge you after that time. For more information about modifying your reservation, go to your "Trips," select your flight and click on "Manage Booking." If you want the flexibility to update your itinerary without additional costs, tick the "Changes included" or "No cancel fee" filter when organizing your next escape.

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*Available to One Key members.