$134 Cheap United flights Ontario (ONT) to Newark Liberty Intl. Airport (EWR)

View $134 flight on Mon, Aug 4, 2025Opens in a new window

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$134 Cheap United flights Ontario (ONT) to Newark Liberty Intl. Airport (EWR)

Prices were available within the past 7 days and start at $134 for one-way flights and $265 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Tue, Aug 26 - Sun, Aug 31
ONT
Ontario
EWR
New York
$265 Roundtrip, found 2 hours ago
$265
Roundtrip
found 2 hours ago
Select United flight, departing Tue, Aug 26 from Ontario to New York, returning Sun, Aug 31, priced at $265 found 2 hours ago
United
Fri, Oct 31 - Tue, Nov 4
ONT
Ontario
EWR
New York
$267 Roundtrip, found 16 hours ago
$267
Roundtrip
found 16 hours ago
Select United flight, departing Fri, Oct 31 from Ontario to New York, returning Tue, Nov 4, priced at $267 found 16 hours ago
United
Wed, Aug 6 - Thu, Aug 14
ONT
Ontario
EWR
New York
$269 Roundtrip, found 6 hours ago
$269
Roundtrip
found 6 hours ago
Select United flight, departing Wed, Aug 6 from Ontario to New York, returning Thu, Aug 14, priced at $269 found 6 hours ago
United
Wed, Aug 6 - Thu, Aug 14
ONT
Ontario
EWR
New York
$270 Roundtrip, found 6 hours ago
$270
Roundtrip
found 6 hours ago
Select United flight, departing Wed, Aug 6 from Ontario to New York, returning Thu, Aug 14, priced at $270 found 6 hours ago
United
Sat, Aug 9 - Wed, Aug 13
ONT
Ontario
EWR
New York
$272 Roundtrip, found 4 hours ago
$272
Roundtrip
found 4 hours ago
Select United flight, departing Sat, Aug 9 from Ontario to New York, returning Wed, Aug 13, priced at $272 found 4 hours ago
United
Tue, Sep 9 - Tue, Sep 16
ONT
Ontario
EWR
New York
$272 Roundtrip, found 11 hours ago
$272
Roundtrip
found 11 hours ago
Select United flight, departing Tue, Sep 9 from Ontario to New York, returning Tue, Sep 16, priced at $272 found 11 hours ago
Flights from Ontario (ONT) to Newark Liberty Intl. Airport (EWR)
Origin airport
Los Angeles - Ontario Intl.
Destination airport
Newark Liberty Intl. Airport
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, Hawaiian Airlines, United
Popular airline
American Airlines
Distance
2402 mi

Frequently asked questions

How much is a United Airlines flight from Los Angeles - Ontario Intl. Airport (ONT) to Liberty Intl. Airport (EWR)?
You'll discover budget-friendly return United Airlines flights from $265 from ONT to EWR by filtering your results from "Price (lowest to highest)" on Expedia. Or search for options from $134 for a one-way journey.**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 ONT to EWR with United Airlines?
Look for round-trip or one-way flights to Newark in January or February. You could find lower fares with United Airlines during these off-peak times.
What is the cheapest time to book flights from Los Angeles - Ontario Intl. Airport (ONT) to Liberty Intl. Airport (EWR) with United Airlines?
Begin your search one to three months ahead of your travel date to get cheap fares on United Airlines flights from Los Angeles - Ontario Intl. Airport (ONT) to Liberty Intl. Airport (EWR). You can save 25% by booking your domestic flight 34 to 86 days in advance compared to last-minute reservations made 6 to 12 days out. You could also reduce costs by buying your fare on a Sunday, as it's 6% cheaper on average than a Monday, the most expensive day to book.* Get your timing spot on, and you can enjoy significant savings on domestic journeys.*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 Los Angeles - Ontario Intl. Airport (ONT) to Liberty Intl. Airport (EWR)?
To see if there's a direct route from ONT to EWR with United Airlines or other airlines, check the "Nonstop" filter when looking for tickets.
What is the earliest United Airlines flight from ONT to EWR?
Search United Airlines's earliest flights from ONT to EWR by using our "Early Morning" and "Morning" filters. Not only will you arrive sooner, early departures also experience 20% fewer cancellations.**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 Newark?
Liberty Intl. Airport (EWR) is the primary Newark gateway for United Airlines flights from Los Angeles - Ontario Intl. Airport (ONT).
Why fly with United Airlines from ONT to EWR?
Journey from ONT to EWR with United Airlines and you'll enjoy a range of perks starting with a rewarding loyalty program. When you book 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 Los Angeles - Ontario Intl. Airport (ONT) to Liberty Intl. Airport (EWR)?
In most cases, you can cancel or change your flight, although additional fees may apply if you booked more than 24 hours ago. Prefer to keep your options open? Make use of Expedia's "Changes included" and "No cancel fee" filters to find flights that won't charge you extra if you have to adjust your plans. To update your itinerary, head to "Trips," select your flight and click on "Manage Booking" for more information.

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*Available to One Key members.