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Newark

$118+ 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 6/4. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — EWR
May 18 — May 251
Sun 5/18
Sun 5/25
1 adult, Economy
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1. Tell us where you want to go

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Cheapflights Tip: The best prices from Ontario to Newark are usually found in January or September, booked 80 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 May 13, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

Priceline
3 stars

Round-trip from

$277
(Delta)

One-way from

$118
(Trip.com)

Popular in

June

Cheapest in

January

Average price

$435
Provider with most accurate pricing for Ontario-Newark flight deals.
Search Deals
Provider most trusted by Cheapflights users for Ontario-Newark flights.
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From Ontario to Newark
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One-way flight from Ontario to Newark
Search Deals
Highest demand for flights based on searches. 14% potential increase in price ($68 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($12 potential savings vs. average RT price).
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Average for round-trip flights in May 2025
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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 May 13, 2025.

This Delta deal was found by Cheapflights users on 5/12. 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.
Tue 8/510:05 pmONT - EWR
1 stop9h 45mDelta
Tue 8/124:00 pmEWR - ONT
1 stop9h 29mDelta
Deal found 5/12$277
This American Airlines deal was found by Cheapflights users on 5/13. 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.
Thu 5/291:14 pmONT - EWR
1 stop6h 52mAmerican Airlines
Wed 6/44:49 pmEWR - ONT
1 stop8h 08mAmerican Airlines
Deal found 5/13$285
This Hawaiian Airlines deal was found by Cheapflights users on 5/11. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/93:04 pmONT - EWR
1 stop11h 55mHawaiian Airlines
Tue 9/167:19 amEWR - ONT
1 stop9h 50mHawaiian Airlines
Deal found 5/11$286
This Alaska Airlines deal was found by Cheapflights users on 5/12. 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.
Sat 5/316:00 amONT - EWR
1 stop9h 29mAlaska Airlines
Sat 6/75:34 pmEWR - ONT
1 stop9h 23mAlaska Airlines
Deal found 5/12$296
This United Airlines deal was found by Cheapflights users on 5/12. 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.
Fri 8/16:31 pmONT - EWR
1 stop8h 05mUnited Airlines
Sat 8/94:58 pmEWR - ONT
1 stop8h 08mUnited Airlines
Deal found 5/12$353

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 May 13, 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

Tue 8/5

10:05 pm-10:50 am

1 stop9h 45m

Newark

Tue 8/12

4:00 pm-10:29 pm

1 stop9h 29m

$277

OntarioNewark

ONT - EWR

ONTEWR

Ontario

Thu 5/29

1:14 pm-11:06 pm

1 stop6h 52m

Newark

Wed 6/4

4:49 pm-9:57 pm

1 stop8h 08m

$285

OntarioNewark

ONT - EWR

ONTEWR

Ontario

Tue 9/9

3:04 pm-5:59 am

1 stop11h 55m

Newark

Tue 9/16

7:19 am-2:09 pm

1 stop9h 50m

$286

OntarioNewark

ONT - EWR

ONTEWR

Ontario

Sat 5/31

6:00 am-6:29 pm

1 stop9h 29m

Newark

Sat 6/7

5:34 pm-11:57 pm

1 stop9h 23m

$296

OntarioNewark

ONT - EWR

ONTEWR

Ontario

Fri 8/1

6:31 pm-5:36 am

1 stop8h 05m

Newark

Sat 8/9

4:58 pm-10:06 pm

1 stop8h 08m

$353

OntarioNewark

ONT - EWR

ONTEWR

Ontario

Wed 6/4

6:30 am-5:42 am

1 stop20h 12m

$118

OntarioNewark

ONT - EWR

ONTEWR

Ontario

Tue 9/30

3:04 pm-5:59 am

1 stop11h 55m

$138

OntarioNewark

ONT - EWR

ONTEWR

Ontario

Tue 6/17

7:05 am-5:54 pm

1 stop7h 49m

$139

OntarioNewark

ONT - EWR

ONTEWR

Ontario

Wed 5/28

1:14 pm-11:06 pm

1 stop6h 52m

$143

OntarioNewark

ONT - EWR

ONTEWR

Ontario

Fri 10/3

7:10 am-6:59 pm

1 stop8h 49m

$147

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/12

Showing 1-10 of 11 results
1
2

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 May.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*2 stars
PricelinePrice Accuracy2 starsTrust Score*3 stars
CheapfaremartPrice Accuracy-Trust Score*1 star

*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 FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Ontario-Newark Airport flight deals on Cheapflights vs. FlightHub >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 Priceline the most. Priceline 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 May 9, 2025.

Booking 80 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, January is the cheapest month in which you can book a flight from Ontario to Newark Airport (average of $228). Flying from Ontario to Newark Airport in June is currently the most expensive (average of $307). 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 May 13, 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 8% versus a flight in the afternoon.

What is the cheapest day to fly from Ontario to Newark Airport?

Use this chart to determine the cheapest time to fly round-trip from Ontario to Newark. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Ontario to Newark Airport flight should consider departing on Tuesday afternoons when fares are most often at their lowest. Thursday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Rainfall in Newark by month

Plan your trip to Newark by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Newark Airport ranges from 2.9 - 4.8 inches per month. July is typically the wettest month, when rainfall can reach 4.8 in. February is typically the driest time to visit Newark Airport when rainfall is around 2.9 in.

Temperature in Newark by month

Plan your trip to Newark by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Newark Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 77.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 32.0 F).

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 May 13, 2025.
Peruse reviews from past customers who have flown with Alaska Airlines, Delta and Hawaiian Airlines from Ontario to New York to help guide your decision. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Crew

8.5

Entertainment

7.1

Overall

8.0

Boarding

8.1

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Crew

8.5

Entertainment

7.1

Overall

8.0

Boarding

8.1

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,949 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Crew

8.5

Entertainment

7.1

Overall

8.0

Boarding

8.1

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Hawaiian Airlines
7.9
Good
2,434 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Crew

8.5

Entertainment

7.1

Overall

8.0

Boarding

8.1

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,726 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Crew

8.5

Entertainment

7.1

Overall

8.0

Boarding

8.1

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Crew

8.5

Entertainment

7.1

Overall

8.0

Boarding

8.1

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

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. 5 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.

  • 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 $277. Other airlines that can offer you cheap pricing are American Airlines, from $285, and Hawaiian Airlines, from $286. Delta is priced at 31% 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 Alaska Airlines, which is currently one of the cheapest options available, starting at $138. Delta flights start at $139 while deals on American Airlines start at $143 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, January is the cheapest month in which you can book a flight from Ontario to Newark Airport (average of $228). Flying from Ontario to Newark Airport in June is currently the most expensive (average of $307). 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 Ontario?

Book flights to Ontario if you plan to visit one of these locations
Queens
Bronx
Elizabeth
Secaucus
East Rutherford
Ronkonkoma
Yonkers
Parsippany
Stamford
Carteret
Staten Island
Woodbridge
East Brunswick
Carle Place
Wayne
Mahwah
Westbury
Hoboken
Paterson
Tannersville

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Top 5 airlines flying from Ontario to Newark

Discover the top 5 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 May 13, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$138Average$242FlexibilityNo cancel feeOn-time65%
Alaska AirlinesCheapest$236Average$376FlexibilityNo cancel feeOn-time75%
DeltaCheapest$266Average$403FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$266Average$423FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$282Average$442FlexibilityNo cancel feeOn-time69%

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