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Newark

$84+ 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 2/3. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — EWR
ene. 3 — ene. 101
sáb. 1/3
sáb. 1/10
1 adult, Economy
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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”

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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

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 diciembre 4, 2025.

This Kiwi.com deal was found by Cheapflights users on 12/1. 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.
mar. 12/96:15 amONT - EWR
2 stops39h 55mMultiple Airlines
vie. 1/912:00 pmEWR - ONT
1 stop12h 23mMultiple Airlines
Deal found 12/1$276
This Kiwi.com deal was found by Cheapflights users on 12/3. 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.
mié. 12/316:00 pmONT - EWR
2 stops26h 59mMultiple Airlines
mié. 1/73:59 pmEWR - ONT
1 stop24h 40mMultiple Airlines
Deal found 12/3$279
This United Airlines deal was found by Cheapflights users on 12/3. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 12/2211:59 pmONT - EWR
1 stop7h 27mUnited Airlines
mar. 1/67:15 amEWR - ONT
1 stop8h 32mUnited Airlines
Deal found 12/3$322
This Kiwi.com deal was found by Cheapflights users on 12/2. 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.
vie. 12/126:19 pmONT - EWR
2 stops23h 12mMultiple Airlines
mié. 12/176:49 pmEWR - ONT
1 stop25h 33mMultiple Airlines
Deal found 12/2$330
This Delta deal was found by Cheapflights users on 12/3. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 12/2511:15 amONT - EWR
1 stop7h 14mDelta
mié. 1/77:00 amEWR - ONT
1 stop8h 16mDelta
Deal found 12/3$338
This Delta deal was found by Cheapflights users on 12/3. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/1710:25 pmONT - EWR
1 stop8h 14mDelta
mar. 1/67:00 amEWR - ONT
1 stop8h 16mDelta
Deal found 12/3$345
This American Airlines deal was found by Cheapflights users on 12/1. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/3112:55 pmONT - EWR
1 stop7h 16mAmerican Airlines
mié. 1/710:20 amEWR - ONT
1 stop8h 45mAmerican Airlines
Deal found 12/1$350
This Alaska Airlines deal was found by Cheapflights users on 12/1. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/96:00 amONT - EWR
1 stop9h 26mAlaska Airlines
vie. 1/96:08 pmEWR - ONT
1 stop24h 00mAlaska Airlines
Deal found 12/1$351
This American Airlines deal was found by Cheapflights users on 12/1. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/96:17 amONT - EWR
2 stops11h 08mAmerican Airlines
vie. 1/91:52 pmEWR - ONT
2 stops11h 21mAmerican Airlines
Deal found 12/1$362
This Alaska Airlines deal was found by Cheapflights users on 12/2. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 12/136:00 amONT - EWR
1 stop9h 26mAlaska Airlines
vie. 1/234:36 pmEWR - ONT
1 stop10h 20mAlaska Airlines
Deal found 12/2$369
This Kiwi.com deal was found by Cheapflights users on 12/2. 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.
mié. 12/316:20 pmONT - EWR
1 stop12h 40mMultiple Airlines
dom. 1/45:00 amEWR - ONT
2 stops39h 15mMultiple Airlines
Deal found 12/2$370

Find 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 diciembre 4, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$207
(Kiwi.com)

One-way from

$84
(Kiwi.com)

Popular in

November

Cheapest in

January

Average price

$489
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. 11% potential increase in price ($51 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($10 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

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 diciembre 4, 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

lun. 2/9

6:00 am-6:24 pm

1 stop9h 24m

Newark

jue. 2/19

5:30 pm-11:52 pm

1 stop9h 22m

$307

OntarioNewark

ONT - EWR

ONTEWR

Ontario

dom. 2/8

6:00 am-6:24 pm

1 stop9h 24m

Newark

jue. 2/19

5:30 pm-11:52 pm

1 stop9h 22m

$323

OntarioNewark

ONT - EWR

ONTEWR

Ontario

mar. 3/17

4:02 pm-6:59 am

1 stop11h 57m

Newark

lun. 3/23

3:29 pm-10:38 pm

1 stop10h 09m

$332

OntarioNewark

ONT - EWR

ONTEWR

Ontario

vie. 2/6

6:00 am-6:24 pm

1 stop9h 24m

Newark

lun. 2/9

4:36 pm-11:56 pm

1 stop10h 20m

$332

OntarioNewark

ONT - EWR

ONTEWR

Ontario

mar. 1/6

7:00 am-6:59 pm

1 stop8h 59m

Newark

mar. 1/13

6:08 pm-8:36 pm

1 stop29h 28m

$347

OntarioNewark

ONT - EWR

ONTEWR

Ontario

vie. 1/23

6:00 am-6:24 pm

1 stop9h 24m

Newark

mar. 1/27

6:08 pm-3:08 pm

1 stop24h 00m

$347

OntarioNewark

ONT - EWR

ONTEWR

Ontario

mié. 1/21

1:24 pm-11:30 pm

1 stop7h 06m

Newark

lun. 1/26

3:29 pm-8:58 pm

1 stop8h 29m

$357

OntarioNewark

ONT - EWR

ONTEWR

Ontario

mié. 1/7

1:24 pm-11:30 pm

1 stop7h 06m

Newark

lun. 1/12

3:29 pm-8:58 pm

1 stop8h 29m

$357

OntarioNewark

ONT - EWR

ONTEWR

Ontario

jue. 1/15

4:03 pm-6:24 pm

1 stop23h 21m

Newark

mar. 1/20

6:08 pm-3:08 pm

1 stop24h 00m

$363

OntarioNewark

ONT - EWR

ONTEWR

Ontario

mié. 1/28

11:53 am-6:24 pm

1 stop27h 31m

Newark

dom. 2/1

4:36 pm-10:59 am

1 stop21h 23m

$364

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/3

Showing 1-10 of 24 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 December.
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 November 28, 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 $183). 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 diciembre 4, 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 diciembre 4, 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
8,011 reviews

Boarding

8.1

Entertainment

7.9

Food

7.3

Comfort

7.9

Crew

8.5

Overall

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
8,011 reviews
Delta
7.9
Good
8,011 reviews

Boarding

8.1

Entertainment

7.9

Food

7.3

Comfort

7.9

Crew

8.5

Overall

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
9,066 reviews
Delta
7.9
Good
8,011 reviews

Boarding

8.1

Entertainment

7.9

Food

7.3

Comfort

7.9

Crew

8.5

Overall

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
11,047 reviews
Delta
7.9
Good
8,011 reviews

Boarding

8.1

Entertainment

7.9

Food

7.3

Comfort

7.9

Crew

8.5

Overall

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
2,899 reviews
Delta
7.9
Good
8,011 reviews

Boarding

8.1

Entertainment

7.9

Food

7.3

Comfort

7.9

Crew

8.5

Overall

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
8,157 reviews
Delta
7.9
Good
8,011 reviews

Boarding

8.1

Entertainment

7.9

Food

7.3

Comfort

7.9

Crew

8.5

Overall

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 can get you from Ontario to Newark Airport in just under 9h 24m. Your travel time can differ by up to . There are 2401 mi between Ontario and Newark Airport.

  • 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.

  • What are the cheapest airlines to fly from Ontario to Newark Airport one-way?

    To fly one-way, consider booking your trip with Frontier, which is currently one of the cheapest options available, starting at $82. Alaska Airlines flights start at $126 while deals on American Airlines start at $138 one-way.

  • 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 $183). 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
East Rutherford
Mahwah
Bethlehem
Yonkers
Elizabeth
Secaucus
North Bergen
Ronkonkoma
Stamford
Staten Island
Edgewater
Seaside Heights
Absecon
Carle Place
Parsippany
New Brunswick
Mount Laurel
Carlstadt

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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 diciembre 4, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$48Average$97FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$90Average$246FlexibilityNo cancel feeOn-time65%
JetBlueCheapest$237Average$317FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$262Average$433FlexibilityNo cancel feeOn-time71%
DeltaCheapest$281Average$378FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$282Average$413FlexibilityNo cancel feeOn-time69%

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