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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 7/30. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — EWR
Jul 5 — Jul 121
Sat 7/5
Sat 7/12
1 adult, Economy
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Cheapflights Tip: The best prices from Ontario to Newark are usually found in January or September, 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 June 30, 2025.

Round-trip from

$261
(Frontier)

One-way from

$100
(Trip.com)

Popular in

June

Cheapest in

January

Average price

$487
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. 9% potential increase in price ($41 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($9 potential savings vs. average RT price).
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Average for round-trip flights in June 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 June 30, 2025.

This Frontier deal was found by Cheapflights users on 6/29. 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 8/45:21 pmONT - EWR
2 stops13h 47mFrontier
Wed 8/611:04 amEWR - ONT
2 stops15h 46mFrontier
Deal found 6/29$261
This American Airlines deal was found by Cheapflights users on 6/30. 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.
Mon 8/412:59 amONT - EWR
1 stop7h 38mAmerican Airlines
Tue 8/127:15 amEWR - ONT
1 stop7h 17mAmerican Airlines
Deal found 6/30$267
This Delta deal was found by Cheapflights users on 6/29. 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.
Wed 10/297:00 amONT - EWR
1 stop7h 58mDelta
Tue 11/46:00 amEWR - ONT
1 stop8h 24mDelta
Deal found 6/29$277
This Alaska Airlines deal was found by Cheapflights users on 6/27. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/277:10 amONT - EWR
1 stop8h 49mAlaska Airlines
Sat 10/45:51 pmEWR - ONT
1 stop8h 58mAlaska Airlines
Deal found 6/27$291
This Orbitz deal was found by Cheapflights users on 6/28. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/176:11 pmONT - EWR
2 stops12h 54mMultiple Airlines
Wed 10/225:45 pmEWR - ONT
1 stop9h 04mMultiple Airlines
Deal found 6/28$294
This United Airlines deal was found by Cheapflights users on 6/29. 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.
Wed 11/261:00 pmONT - EWR
1 stop7h 34mUnited Airlines
Wed 12/36:00 amEWR - ONT
1 stop9h 32mUnited Airlines
Deal found 6/29$313

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 June 30, 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

Mon 8/4

5:21 pm-10:08 am

2 stops13h 47m

Newark

Wed 8/6

11:04 am-11:50 pm

2 stops15h 46m

$261

OntarioNewark

ONT - EWR

ONTEWR

Ontario

Mon 8/4

7:05 pm-5:35 am

1 stop7h 30m

Newark

Tue 8/12

5:30 am-9:58 am

1 stop7h 28m

$267

OntarioNewark

ONT - EWR

ONTEWR

Ontario

Wed 10/29

7:00 am-5:58 pm

1 stop7h 58m

Newark

Tue 11/4

6:00 am-11:24 am

1 stop8h 24m

$277

OntarioNewark

ONT - EWR

ONTEWR

Ontario

Sat 9/27

7:10 am-6:59 pm

1 stop8h 49m

Newark

Sat 10/4

5:51 pm-11:49 pm

1 stop8h 58m

$291

OntarioNewark

ONT - EWR

ONTEWR

Ontario

Fri 10/17

6:11 pm-10:05 am

2 stops12h 54m

Newark

Wed 10/22

5:45 pm-11:49 pm

1 stop9h 04m

$294

OntarioNewark

ONT - EWR

ONTEWR

Ontario

Wed 11/26

1:00 pm-11:34 pm

1 stop7h 34m

Newark

Wed 12/3

6:00 am-12:32 pm

1 stop9h 32m

$313

OntarioNewark

ONT - EWR

ONTEWR

Ontario

Wed 7/30

7:00 am-6:05 am

1 stop20h 05m

$100

OntarioNewark

ONT - EWR

ONTEWR

Ontario

Mon 10/6

6:56 pm-10:05 am

2 stops12h 09m

$131

OntarioNewark

ONT - EWR

ONTEWR

Ontario

Mon 7/21

4:00 pm-5:59 am

1 stop10h 59m

$134

OntarioNewark

ONT - EWR

ONTEWR

Ontario

Tue 10/28

6:00 am-6:29 pm

1 stop9h 29m

$138

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/28

Showing 1-10 of 13 results
1
2

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 June 27, 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 $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 June 30, 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.

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 June 30, 2025.
Get a feel of what it's like to fly with Alaska Airlines, Delta, and Hawaiian 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.
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Entertainment

7.1

Overall

8.0

Comfort

7.8

Food

7.1

Crew

8.5

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

Boarding

8.1

Entertainment

7.1

Overall

8.0

Comfort

7.8

Food

7.1

Crew

8.5

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
7,969 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Entertainment

7.1

Overall

8.0

Comfort

7.8

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Hawaiian Airlines
7.8
Good
2,533 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Entertainment

7.1

Overall

8.0

Comfort

7.8

Food

7.1

Crew

8.5

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
8,852 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Entertainment

7.1

Overall

8.0

Comfort

7.8

Food

7.1

Crew

8.5

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

Boarding

8.1

Entertainment

7.1

Overall

8.0

Comfort

7.8

Food

7.1

Crew

8.5

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. 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.

  • 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 $261. Other airlines that can offer you cheap pricing are American Airlines, from $267, and Delta, from $277. Frontier is priced at 35% 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 Hawaiian Airlines, which is currently one of the cheapest options available, starting at $134. Frontier flights start at $136 while deals on Delta start at $139 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
Secaucus
Elizabeth
East Rutherford
Ronkonkoma
Parsippany
North Bergen
Yonkers
Staten Island
Stamford
Mahwah
Carle Place
New Brunswick
Westbury
Hoboken
East Brunswick
Paterson
Fort Lee
Tannersville

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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 June 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$138Average$217FlexibilityNo cancel feeOn-time65%
Alaska AirlinesCheapest$236Average$376FlexibilityNo cancel feeOn-time75%
JetBlueCheapest$237Average$337FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$265Average$399FlexibilityNo cancel feeOn-time71%
DeltaCheapest$266Average$396FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$282Average$435FlexibilityNo cancel feeOn-time69%

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