HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Newark

$100+ Cheap flights from Ontario (ONT) to Newark (EWR)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/7. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — EWR
Nov 26 — Dec 31
Wed 11/26
Wed 12/3
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Ontario to Newark with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheapflights Tip: The best prices from Ontario to Newark are usually found in January or August, booked 69 days in advance, depart on a Tuesday or Wednesday and return on a Tuesday

Cheap flight deals from Ontario to Newark

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Newark (EWR). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated October 27, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$219
(Kiwi.com)

One-way from

$100
(Kiwi.com)

Popular in

December

Cheapest in

January

Average price

$390
Provider with most accurate pricing for Ontario-Newark flight deals.
Search Deals
Provider most trusted by Cheapflights users for Ontario-Newark flights.
Search Deals
From Ontario to Newark
Search Deals
One-way flight from Ontario to Newark
Search Deals
Highest demand for flights based on searches. 2% potential increase in price ($11 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($7 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
Search Deals

Find flight deals from Ontario to Newark

Cheapest flights from Ontario to Newark
Explore the most affordable flight options available from Ontario to Newark. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 27, 2025.

This Kiwi.com deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/412:04 pmONT - EWR
2 stops34h 03mMultiple Airlines
Mon 12/810:00 pmEWR - ONT
1 stop16h 27mMultiple Airlines
Deal found 10/26$219
This Kiwi.com deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/141:46 pmONT - EWR
1 stop16h 48mMultiple Airlines
Mon 11/176:45 pmEWR - ONT
2 stops29h 42mMultiple Airlines
Deal found 10/25$226
This Kiwi.com deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/128:45 amONT - EWR
2 stops22h 45mMultiple Airlines
Sat 11/156:32 pmEWR - ONT
1 stop27h 17mMultiple Airlines
Deal found 10/24$227
This Kiwi.com deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/101:46 pmONT - EWR
1 stop16h 48mMultiple Airlines
Thu 11/136:45 pmEWR - ONT
2 stops43h 25mMultiple Airlines
Deal found 10/26$232
This Kiwi.com deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/56:19 pmONT - EWR
1 stop17h 34mMultiple Airlines
Mon 12/810:00 pmEWR - ONT
1 stop16h 27mMultiple Airlines
Deal found 10/24$233
This Kiwi.com deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/101:46 pmONT - EWR
1 stop16h 48mMultiple Airlines
Tue 11/186:45 pmEWR - ONT
2 stops28h 57mMultiple Airlines
Deal found 10/27$237
This Kiwi.com deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/101:46 pmONT - EWR
1 stop16h 48mMultiple Airlines
Fri 11/144:59 pmEWR - ONT
2 stops33h 51mMultiple Airlines
Deal found 10/26$244
This Kiwi.com deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/128:00 amONT - EWR
1 stop30h 04mMultiple Airlines
Thu 11/206:00 amEWR - ONT
2 stops11h 26mMultiple Airlines
Deal found 10/25$251

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario to Newark that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated October 27, 2025.
Use the filters below to find and compare flights from Ontario to Newark Airport that are best for you.

Fly from

Ontario

Fly to

Newark

Route

Depart

Return

Price

OntarioNewark

ONT - EWR

ONTEWR

Ontario

Sat 11/15

6:00 am-6:29 pm

1 stop9h 29m

Newark

Tue 11/18

7:30 am-3:17 pm

1 stop10h 47m

$318

OntarioNewark

ONT - EWR

ONTEWR

Ontario

Wed 11/12

6:00 am-6:29 pm

1 stop9h 29m

Newark

Tue 11/18

7:30 am-3:17 pm

1 stop10h 47m

$320

OntarioNewark

ONT - EWR

ONTEWR

Ontario

Mon 11/10

6:00 am-6:29 pm

1 stop9h 29m

Newark

Thu 11/13

4:25 pm-11:32 pm

1 stop10h 07m

$322

OntarioNewark

ONT - EWR

ONTEWR

Ontario

Wed 11/19

6:00 am-6:29 pm

1 stop9h 29m

Newark

Thu 12/4

4:29 pm-11:29 pm

1 stop10h 00m

$325

OntarioNewark

ONT - EWR

ONTEWR

Ontario

Sun 11/9

4:49 pm-5:36 am

1 stop9h 47m

Newark

Thu 11/13

3:15 pm-11:52 pm

2 stops11h 37m

$328

OntarioNewark

ONT - EWR

ONTEWR

Ontario

Sat 12/6

6:00 am-6:26 pm

1 stop9h 26m

Newark

Thu 12/11

4:29 pm-11:29 pm

1 stop10h 00m

$332

OntarioNewark

ONT - EWR

ONTEWR

Ontario

Wed 12/3

1:34 pm-11:15 pm

1 stop6h 41m

Newark

Sat 12/6

2:15 pm-9:49 pm

1 stop10h 34m

$333

OntarioNewark

ONT - EWR

ONTEWR

Ontario

Wed 1/7

1:53 pm-1:08 am

1 stop8h 15m

Newark

Sat 1/10

3:29 pm-8:58 pm

1 stop8h 29m

$333

OntarioNewark

ONT - EWR

ONTEWR

Ontario

Wed 12/3

6:00 am-7:19 pm

2 stops10h 19m

Newark

Sat 12/6

12:50 pm-10:05 pm

2 stops12h 15m

$343

OntarioNewark

ONT - EWR

ONTEWR

Ontario

Sun 12/21

5:10 pm-5:14 am

1 stop9h 04m

Newark

Fri 1/9

4:00 pm-9:14 pm

1 stop8h 14m

$350

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/26

Showing 1-10 of 21 results
1
2
3

Compare providers for flights from Ontario to Newark

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Ontario to Newark in October.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
CheapfaremartPrice Accuracy-Trust Score*1 star
PricelinePrice Accuracy1 starTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Ontario-Newark Airport flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Ontario-Newark Airport flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Ontario-Newark Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Ontario-Newark Airport flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Ontario-Newark Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Ontario to Newark

Have a flexible travel schedule? Discover the best time to fly to Newark from Ontario with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Ontario to Newark Airport

How far ahead should I book a flight from Ontario to Newark Airport?

Use this chart to determine the optimal time to book a round-trip flight from Ontario to Newark. Price data was last updated on October 24, 2025.

Booking 69 days in advance of your planned departure date is, on average, the best time to get cheap flights from Ontario to Newark Airport. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Ontario to Newark Airport?

Currently, June is the cheapest month in which you can book a flight from Ontario to Newark Airport (average of $78). Flying from Ontario to Newark Airport in December is currently the most expensive (average of $185). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from ONT to EWR?

Find hourly flight availability from Ontario to Newark. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 27, 2025.

When flying from Ontario to Newark Airport, the time of day you fly usually plays a role in the price. Save by searching for a flight in the morning, which can drop the price by up to 7% versus a flight in the afternoon.

Reviews of airlines servicing Newark

Get insights into the airlines that provide service to Newark. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Newark. Reviews last updated October 27, 2025.
Get a feel of what it's like to fly with Delta, United Airlines, and American Airlines from Ontario to Newark Airport by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
7,996 reviews

Food

7.3

Overall

7.9

Comfort

7.9

Boarding

8.2

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Lucy,Nov 2023

ATL - JFK

On time flights; courteous staff; efficient boarding system! Thank you!
Delta
7.9
Good
7,996 reviews
Delta
7.9
Good
7,996 reviews

Food

7.3

Overall

7.9

Comfort

7.9

Boarding

8.2

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Lucy,Nov 2023

ATL - JFK

On time flights; courteous staff; efficient boarding system! Thank you!
United Airlines
7.4
Good
8,997 reviews
Delta
7.9
Good
7,996 reviews

Food

7.3

Overall

7.9

Comfort

7.9

Boarding

8.2

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Lucy,Nov 2023

ATL - JFK

On time flights; courteous staff; efficient boarding system! Thank you!
American Airlines
7.2
Good
11,033 reviews
Delta
7.9
Good
7,996 reviews

Food

7.3

Overall

7.9

Comfort

7.9

Boarding

8.2

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Lucy,Nov 2023

ATL - JFK

On time flights; courteous staff; efficient boarding system! Thank you!
JetBlue
7.2
Good
2,907 reviews
Delta
7.9
Good
7,996 reviews

Food

7.3

Overall

7.9

Comfort

7.9

Boarding

8.2

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Lucy,Nov 2023

ATL - JFK

On time flights; courteous staff; efficient boarding system! Thank you!
Spirit Airlines
6.3
Okay
8,110 reviews
Delta
7.9
Good
7,996 reviews

Food

7.3

Overall

7.9

Comfort

7.9

Boarding

8.2

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Lucy,Nov 2023

ATL - JFK

On time flights; courteous staff; efficient boarding system! Thank you!

Related info for your journey

Find useful and relevant information for your journey from Ontario to Newark. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Ontario to Newark?

    Ontario (ONT), located 3.1 mi from the city center, is the airport you fly out of when you book flights from Ontario to Newark. 6 airlines have flights from Ontario to Newark on a regular basis. Booking flights from Ontario to Newark should not be difficult; the airport handles an average of 0 outbound flights to Newark per day.

  • How long is the flight from Ontario to Newark Airport?

    Alaska Airlines and Delta can get you from Ontario to Newark Airport in just under 9h 29m. Your travel time can differ by up to 18m. There are 2401 mi between Ontario and Newark Airport. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines flying from Ontario to Newark Airport round-trip?

    Cheapflights users have booked flights from Ontario to Newark Airport round-trip from $48. Other airlines that can offer you cheap pricing are Spirit Airlines, from $90, and JetBlue, from $237. Frontier is priced at 88% lower than the current average price of a flight leaving 3 months from now.

  • Can I find deals for flights from Ontario to Newark that include hotel bookings?

    Yes. In addition to deals on Ontario to Newark flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Ontario to Newark?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to Newark.

  • Can I find deals for business class flights from Ontario to Newark?

    Yes. Cheapflights offers flight deals from Ontario to Newark by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Ontario to Newark Airport?

    Currently, June is the cheapest month in which you can book a flight from Ontario to Newark Airport (average of $78). Flying from Ontario to Newark Airport in December is currently the most expensive (average of $185). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Newark Airport?

Book flights to Newark Airport if you plan to visit one of these locations
Queens
Bronx
Mahwah
Yonkers
Ronkonkoma
Secaucus
North Bergen
Elizabeth
Bethlehem
East Rutherford
Stamford
Staten Island
Edgewater
New Brunswick
Seaside Heights
Absecon
Carle Place
Parsippany
East Brunswick
Avenel

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Ontario to Newark

See prices for flight routes from nearby airports that may be better suited for you.
Los Angeles to John F Kennedy Intl flights
San Francisco to John F Kennedy Intl flights
Los Angeles to Newark flights
San Francisco to Newark flights
Los Angeles to LaGuardia flights
San Francisco to LaGuardia flights
San Diego to John F Kennedy Intl flights
San Diego to Newark flights
Burbank to LaGuardia flights
Ontario to John F Kennedy Intl flights
Santa Ana to Newark flights
Santa Ana to LaGuardia flights
Santa Ana to John F Kennedy Intl flights
San Diego to LaGuardia flights
Ontario to LaGuardia flights
Las Vegas to John F Kennedy Intl flights
San Jose to John F Kennedy Intl flights
San Jose to Newark flights
Oakland to Newark flights
Oakland to John F Kennedy Intl flights
Sacramento to Newark flights
Burbank to Newark flights
Sacramento to John F Kennedy Intl flights
Las Vegas to Newark flights
Burbank to John F Kennedy Intl flights
San Jose to LaGuardia flights
Sacramento to LaGuardia flights
Las Vegas to LaGuardia flights
Palm Springs to John F Kennedy Intl flights
Palm Springs to Newark flights
Fresno to John F Kennedy Intl flights
Palm Springs to LaGuardia flights
Long Beach to John F Kennedy Intl flights
Reno to John F Kennedy Intl flights
Oakland to LaGuardia flights
Fresno to LaGuardia flights
Fresno to Newark flights
Reno to Newark flights
Long Beach to Newark flights
Reno to LaGuardia flights
Long Beach to LaGuardia flights
Santa Barbara to John F Kennedy Intl flights
Monterey to Newark flights
Santa Barbara to Newark flights
Bakersfield to Newark flights
Monterey to LaGuardia flights
Bakersfield to LaGuardia flights
San Luis Obispo to Newark flights
Santa Barbara to LaGuardia flights

Top 6 airlines flying from Ontario to Newark

Discover the top 6 airlines that operate flights from Ontario to Newark. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated October 27, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$48Average$97FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$90Average$246FlexibilityNo cancel feeOn-time65%
JetBlueCheapest$237Average$317FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$263Average$432FlexibilityNo cancel feeOn-time71%
DeltaCheapest$281Average$380FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$282Average$411FlexibilityNo cancel feeOn-time69%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.
Site
©2025 Cheapflights