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Newark

$114+ 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 9/30. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — EWR
Oct 17 — Oct 241
Fri 10/17
Fri 10/24
1 adult, Economy
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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

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 September 17, 2025.

Round-trip from

$229
(American Airlines)

One-way from

$114
(United Airlines)

Popular in

December

Cheapest in

January

Average price

$386
From Ontario to Newark
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One-way flight from Ontario to Newark
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Highest demand for flights based on searches. 0% potential increase in price ($1 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($8 potential savings vs. average RT price).
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Average for round-trip flights in September 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 September 17, 2025.

This Frontier deal was found by Cheapflights users on 9/15. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/104:05 pmONT - EWR
2 stops15h 25mFrontier
Thu 11/1311:30 amEWR - ONT
2 stops15h 20mFrontier
Deal found 9/15$230
This Frontier deal was found by Cheapflights users on 9/14. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/296:53 amONT - EWR
2 stops15h 13mFrontier
Thu 10/3011:26 amEWR - ONT
2 stops23h 03mFrontier
Deal found 9/14$231
This KAYAK deal was found by Cheapflights users on 9/15. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/16:00 amONT - EWR
1 stop9h 29mAlaska Airlines
Wed 11/57:30 amEWR - ONT
1 stop10h 47mAlaska Airlines
Deal found 9/15$232
This Frontier deal was found by Cheapflights users on 9/16. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/296:53 amONT - EWR
2 stops15h 13mFrontier
Mon 11/311:30 amEWR - ONT
2 stops15h 20mFrontier
Deal found 9/16$238
This Hawaiian Airlines deal was found by Cheapflights users on 9/16. 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 11/44:11 pmONT - EWR
1 stop10h 48mHawaiian Airlines
Wed 11/57:30 amEWR - ONT
1 stop10h 47mHawaiian Airlines
Deal found 9/16$241
This CheapOair deal was found by Cheapflights users on 9/15. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/312:28 pmONT - EWR
2 stops33h 38mFrontier
Wed 10/811:26 amEWR - ONT
2 stops23h 23mFrontier
Deal found 9/15$242
This CheapOair deal was found by Cheapflights users on 9/15. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/212:28 pmONT - EWR
2 stops33h 38mFrontier
Sat 10/45:55 amEWR - ONT
2 stops39h 40mFrontier
Deal found 9/15$243
This Alaska Airlines deal was found by Cheapflights users on 9/17. 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.
Wed 10/296:00 amONT - EWR
1 stop9h 29mAlaska Airlines
Wed 11/57:30 amEWR - ONT
1 stop10h 47mAlaska Airlines
Deal found 9/17$246
This United Airlines deal was found by Cheapflights users on 9/16. 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.
Tue 10/146:36 pmONT - EWR
1 stop7h 48mUnited Airlines
Tue 10/214:54 pmEWR - ONT
1 stop8h 36mUnited Airlines
Deal found 9/16$247
This Hawaiian Airlines deal was found by Cheapflights users on 9/15. 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.
Sat 11/16:00 amONT - EWR
1 stop9h 29mHawaiian Airlines
Wed 11/57:30 amEWR - ONT
1 stop10h 47mHawaiian Airlines
Deal found 9/15$248
This United Airlines deal was found by Cheapflights users on 9/17. 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.
Tue 10/286:38 pmONT - EWR
1 stop8h 16mUnited Airlines
Sat 11/14:50 pmEWR - ONT
1 stop8h 41mUnited Airlines
Deal found 9/17$249
This United Airlines deal was found by Cheapflights users on 9/16. 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.
Sat 12/61:34 pmONT - EWR
1 stop6h 41mUnited Airlines
Sat 12/136:00 amEWR - ONT
1 stop9h 32mUnited Airlines
Deal found 9/16$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 September 17, 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 2/14

1:52 pm-1:13 am

1 stop8h 21m

Newark

Tue 2/17

3:53 pm-9:59 pm

1 stop9h 06m

$251

OntarioNewark

ONT - EWR

ONTEWR

Ontario

Sat 12/6

1:34 pm-11:15 pm

1 stop6h 41m

Newark

Wed 12/10

2:25 pm-10:49 pm

2 stops11h 24m

$254

OntarioNewark

ONT - EWR

ONTEWR

Ontario

Sat 10/25

11:36 am-11:56 pm

1 stop9h 20m

Newark

Tue 10/28

7:15 am-12:16 pm

1 stop8h 01m

$277

OntarioNewark

ONT - EWR

ONTEWR

Ontario

Tue 11/18

10:25 pm-9:36 am

1 stop8h 11m

Newark

Mon 11/24

6:46 pm-11:52 pm

1 stop8h 06m

$277

OntarioNewark

ONT - EWR

ONTEWR

Ontario

Fri 10/24

10:00 pm-11:00 am

1 stop10h 00m

Newark

Tue 10/28

11:55 am-9:20 pm

2 stops12h 25m

$282

OntarioNewark

ONT - EWR

ONTEWR

Ontario

Sat 11/1

7:05 am-11:10 pm

2 stops13h 05m

Newark

Wed 11/5

6:55 am-12:14 pm

1 stop8h 19m

$282

OntarioNewark

ONT - EWR

ONTEWR

Ontario

Tue 10/28

7:05 am-6:08 pm

1 stop8h 03m

Newark

Sat 11/8

12:55 pm-9:20 pm

2 stops11h 25m

$282

OntarioNewark

ONT - EWR

ONTEWR

Ontario

Sat 12/6

4:15 pm-5:58 am

1 stop10h 43m

Newark

Wed 12/10

7:14 am-3:21 pm

1 stop11h 07m

$283

OntarioNewark

ONT - EWR

ONTEWR

Ontario

Mon 2/9

10:30 pm-12:09 pm

2 stops10h 39m

Newark

Mon 2/23

2:59 pm-11:52 pm

2 stops11h 53m

$287

OntarioNewark

ONT - EWR

ONTEWR

Ontario

Tue 10/28

5:50 pm-8:43 am

2 stops11h 53m

Newark

Sat 11/1

6:15 am-2:01 pm

2 stops10h 46m

$287

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/15

Showing 1-10 of 21 results
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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 September 12, 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, 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 $301). 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 September 17, 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.

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 September 17, 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
8.0
Very good
7,961 reviews

Overall

8.0

Boarding

8.2

Crew

8.5

Comfort

7.9

Food

7.3

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
8.0
Very good
7,961 reviews
Delta
8.0
Very good
7,961 reviews

Overall

8.0

Boarding

8.2

Crew

8.5

Comfort

7.9

Food

7.3

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
8,926 reviews
Delta
8.0
Very good
7,961 reviews

Overall

8.0

Boarding

8.2

Crew

8.5

Comfort

7.9

Food

7.3

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
10,000 reviews
Delta
8.0
Very good
7,961 reviews

Overall

8.0

Boarding

8.2

Crew

8.5

Comfort

7.9

Food

7.3

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
2,914 reviews
Delta
8.0
Very good
7,961 reviews

Overall

8.0

Boarding

8.2

Crew

8.5

Comfort

7.9

Food

7.3

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
8,023 reviews
Delta
8.0
Very good
7,961 reviews

Overall

8.0

Boarding

8.2

Crew

8.5

Comfort

7.9

Food

7.3

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. 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.

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

    United Airlines and Delta can get you from Ontario to Newark Airport in just under 8h 21m. Your travel time can differ by up to 59m. 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 $90. Other airlines that can offer you cheap pricing are JetBlue, from $237, and American Airlines, from $262. Spirit Airlines is priced at 76% 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 United Airlines, which is currently one of the cheapest options available, starting at $114. Alaska Airlines flights start at $123 while deals on Hawaiian Airlines start at $124 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 $301). 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
Elizabeth
Mahwah
Secaucus
Yonkers
Ronkonkoma
East Rutherford
North Bergen
Stamford
Staten Island
New Brunswick
Absecon
Carle Place
East Brunswick
Westbury
Avenel
Paterson
Fort Lee
Seaside Heights

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Alternative routes for Ontario to Newark

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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 September 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$90Average$223FlexibilityNo cancel feeOn-time65%
JetBlueCheapest$237Average$317FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$262Average$406FlexibilityNo cancel feeOn-time71%
DeltaCheapest$266Average$374FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$282Average$429FlexibilityNo cancel feeOn-time69%

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