HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Newark

$106+ 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 7/1. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — EWR
jun. 17 — jun. 241
mar. 6/17
mar. 6/24
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 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 junio 12, 2025.

Round-trip from

$237
(United Airlines)

One-way from

$106
(Trip.com)

Popular in

June

Cheapest in

January

Average price

$487
From Ontario to Newark
Search Deals
One-way flight from Ontario to Newark
Search Deals
Highest demand for flights based on searches. 10% potential increase in price ($45 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($8 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 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 junio 12, 2025.

This United Airlines deal was found by Cheapflights users on 6/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 7/16:28 pmONT - EWR
1 stop8h 08mUnited Airlines
vie. 7/41:18 pmEWR - ONT
1 stop8h 12mUnited Airlines
Deal found 6/11$237
This American Airlines deal was found by Cheapflights users on 6/11. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 7/212:55 pmONT - EWR
1 stop7h 51mAmerican Airlines
sáb. 7/56:56 amEWR - ONT
1 stop8h 04mAmerican Airlines
Deal found 6/11$267
This Delta deal was found by Cheapflights users on 6/12. 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.
mar. 10/2110:59 pmONT - EWR
2 stops10h 07mDelta
mié. 10/292:30 pmEWR - ONT
1 stop8h 12mDelta
Deal found 6/12$282
This Alaska Airlines deal was found by Cheapflights users on 6/10. 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. 9/97:10 amONT - EWR
1 stop8h 49mAlaska Airlines
jue. 9/184:00 pmEWR - ONT
1 stop10h 59mAlaska Airlines
Deal found 6/10$287
This Hawaiian Airlines deal was found by Cheapflights users on 6/11. 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.
mié. 8/273:04 pmONT - EWR
1 stop11h 55mHawaiian Airlines
jue. 9/45:48 pmEWR - ONT
1 stop9h 05mHawaiian Airlines
Deal found 6/11$406
This Frontier deal was found by Cheapflights users on 6/10. 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.
vie. 8/297:19 pmONT - EWR
2 stops11h 49mFrontier
mar. 9/911:00 amEWR - ONT
2 stops15h 50mFrontier
Deal found 6/10$427

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 junio 12, 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

mar. 7/1

6:28 pm-5:36 am

1 stop8h 08m

Newark

vie. 7/4

1:18 pm-6:30 pm

1 stop8h 12m

$237

OntarioNewark

ONT - EWR

ONTEWR

Ontario

mié. 7/2

12:55 pm-11:46 pm

1 stop7h 51m

Newark

sáb. 7/5

6:56 am-12:00 pm

1 stop8h 04m

$267

OntarioNewark

ONT - EWR

ONTEWR

Ontario

mar. 10/21

10:59 pm-12:06 pm

2 stops10h 07m

Newark

mié. 10/29

2:30 pm-7:42 pm

1 stop8h 12m

$282

OntarioNewark

ONT - EWR

ONTEWR

Ontario

mar. 9/9

7:10 am-6:59 pm

1 stop8h 49m

Newark

vie. 9/19

5:48 pm-11:53 pm

1 stop9h 05m

$287

OntarioNewark

ONT - EWR

ONTEWR

Ontario

mié. 8/27

3:04 pm-5:59 am

1 stop11h 55m

Newark

jue. 9/4

5:48 pm-11:53 pm

1 stop9h 05m

$406

OntarioNewark

ONT - EWR

ONTEWR

Ontario

vie. 8/29

7:19 pm-10:08 am

2 stops11h 49m

Newark

mar. 9/9

11:00 am-11:50 pm

2 stops15h 50m

$427

OntarioNewark

ONT - EWR

ONTEWR

Ontario

mar. 7/1

5:13 pm-5:48 am

1 stop9h 35m

$106

OntarioNewark

ONT - EWR

ONTEWR

Ontario

mar. 9/30

3:04 pm-5:59 am

1 stop11h 55m

$135

OntarioNewark

ONT - EWR

ONTEWR

Ontario

mar. 9/23

3:04 pm-5:59 am

1 stop11h 55m

$138

OntarioNewark

ONT - EWR

ONTEWR

Ontario

vie. 7/4

11:49 am-12:58 am

1 stop10h 09m

$139

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/12

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 9, 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 junio 12, 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 junio 12, 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

Boarding

8.1

Entertainment

7.1

Overall

8.0

Comfort

7.8

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

Food

7.1

Boarding

8.1

Entertainment

7.1

Overall

8.0

Comfort

7.8

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
7,950 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.1

Entertainment

7.1

Overall

8.0

Comfort

7.8

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
7.9
Good
2,494 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.1

Entertainment

7.1

Overall

8.0

Comfort

7.8

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
8,790 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.1

Entertainment

7.1

Overall

8.0

Comfort

7.8

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

Food

7.1

Boarding

8.1

Entertainment

7.1

Overall

8.0

Comfort

7.8

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. 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 $237. Other airlines that can offer you cheap pricing are American Airlines, from $267, and Delta, from $282. United Airlines is priced at 41% 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 $135. Alaska Airlines flights start at $138 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
Elizabeth
Secaucus
East Rutherford
Ronkonkoma
Parsippany
Yonkers
Staten Island
Stamford
Mahwah
Carle Place
East Brunswick
New Brunswick
Westbury
Hoboken
Paterson
Mount Laurel
Fort Lee
Tannersville

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
Los Angeles to Newark flights
San Francisco to John F Kennedy Intl flights
San Francisco to Newark flights
Los Angeles to LaGuardia flights
San Francisco to LaGuardia flights
Santa Ana to Newark flights
Burbank to Newark flights
Ontario to John F Kennedy Intl flights
San Diego to John F Kennedy Intl flights
Oakland to Newark flights
San Diego to Newark flights
Burbank to LaGuardia flights
Santa Ana to LaGuardia flights
Oakland to LaGuardia flights
Santa Ana to John F Kennedy Intl flights
San Jose to Newark flights
Ontario to LaGuardia flights
Las Vegas to John F Kennedy Intl flights
San Jose to John F Kennedy Intl flights
San Diego to LaGuardia flights
Burbank to John F Kennedy Intl flights
Las Vegas to Newark flights
Sacramento to Newark flights
San Jose to LaGuardia flights
Oakland to John F Kennedy Intl flights
Sacramento to John F Kennedy Intl flights
Las Vegas to LaGuardia flights
Long Beach to John F Kennedy Intl flights
Sacramento to LaGuardia flights
Palm Springs to John F Kennedy Intl flights
Fresno to John F Kennedy Intl flights
Palm Springs to Newark flights
San Francisco to Stewart flights
Santa Barbara to John F Kennedy Intl flights
Fresno to Newark flights
Palm Springs to LaGuardia flights
Fresno to LaGuardia flights
Reno to Newark flights
Santa Barbara to Newark flights
Reno to John F Kennedy Intl flights
Long Beach to LaGuardia flights
Reno to LaGuardia flights
Long Beach to Newark flights
Medford to John F Kennedy Intl flights
Santa Barbara to LaGuardia flights
Medford to Newark flights
Medford to LaGuardia flights
Los Angeles to Stewart flights

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 junio 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$138Average$228FlexibilityNo cancel feeOn-time65%
Alaska AirlinesCheapest$236Average$376FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$266Average$419FlexibilityNo cancel feeOn-time71%
DeltaCheapest$266Average$397FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$282Average$440FlexibilityNo 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.