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Ontario

$100+ Cheap flights from New Jersey to Ontario (ONT)

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 6/30. Fares are subject to change and may not be available on all flights or dates of travel.
EWR — ONT
Jun 21 — Jun 281
Sat 6/21
Sat 6/28
1 adult, Economy
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Cheap flight deals from New Jersey to Ontario

Keep the following information in mind while searching for New Jersey to Ontario flight deals. Data was last updated June 16, 2025.

Round-trip from

$198
(Cheapflightsfares)

One-way from

$100
(Frontier)

Popular in

December

Cheapest in

September

Average price

$387
From New Jersey to Ontario
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One-way flight from New Jersey to Ontario
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Highest demand for flights based on searches. 6% potential increase in price ($27 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 June 2025
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Find flight deals from New Jersey to Ontario

Cheapest flights from New Jersey to Ontario
Explore the most affordable flight options available from New Jersey to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 16, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 6/15. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/307:19 amPHL - ONT
1 stop7h 33mFrontier
Fri 7/47:36 pmONT - PHL
1 stop7h 13mFrontier
Deal found 6/15$198
This JetBlue deal was found by Cheapflights users on 6/15. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/56:35 pmJFK - ONT
Nonstop5h 54mJetBlue
Mon 9/1510:56 pmONT - JFK
Nonstop5h 22mJetBlue
Deal found 6/15$233
This Southwest deal was found by Cheapflights users on 6/15. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/146:30 amLGA - ONT
2 stops9h 10mSouthwest
Tue 8/195:45 amONT - LGA
2 stops8h 35mSouthwest
Deal found 6/15$249
This American Airlines deal was found by Cheapflights users on 6/14. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/67:20 amJFK - ONT
1 stop7h 12mAmerican Airlines
Mon 8/1111:59 pmONT - JFK
1 stop8h 53mAmerican Airlines
Deal found 6/14$253
This Cheapflightsfares deal was found by Cheapflights users on 6/15. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/206:59 amJFK - ONT
1 stop7h 53mFrontier
Wed 7/27:36 pmONT - JFK
1 stop6h 54mFrontier
Deal found 6/15$257
This American Airlines deal was found by Cheapflights users on 6/14. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/411:00 amLGA - ONT
2 stops11h 01mAmerican Airlines
Wed 7/912:46 pmONT - LGA
1 stop7h 49mAmerican Airlines
Deal found 6/14$257
This Delta deal was found by Cheapflights users on 6/16. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/163:00 pmJFK - ONT
1 stop10h 41mDelta
Mon 9/2210:59 pmONT - JFK
1 stop7h 46mDelta
Deal found 6/16$267
This Delta deal was found by Cheapflights users on 6/14. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/175:00 pmLGA - ONT
1 stop8h 41mDelta
Wed 9/2412:00 pmONT - LGA
1 stop7h 43mDelta
Deal found 6/14$267
This American Airlines deal was found by Cheapflights users on 6/14. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/65:30 amEWR - ONT
1 stop9h 22mAmerican Airlines
Mon 8/1112:22 pmONT - EWR
1 stop7h 07mAmerican Airlines
Deal found 6/14$267
This Booking.com deal was found by Cheapflights users on 6/15. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/1710:59 pmLGA - ONT
1 stop13h 02mFrontier
Mon 6/3012:59 amONT - LGA
1 stop18h 15mFrontier
Deal found 6/15$269
This flugladen.de deal was found by Cheapflights users on 6/16. 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 flugladen.de is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/185:51 pmEWR - ONT
1 stop8h 58mHawaiian Airlines
Sat 10/257:10 amONT - EWR
1 stop8h 43mHawaiian Airlines
Deal found 6/16$274
This Delta deal was found by Cheapflights users on 6/13. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/231:15 pmEWR - ONT
1 stop9h 27mDelta
Wed 10/112:00 pmONT - EWR
1 stop9h 55mDelta
Deal found 6/13$277

Cheapflights Fare Finder

Customize your flight search to find flights from New Jersey to Ontario 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 16, 2025.
Use the filters below to find and compare flights from New Jersey to Ontario that are best for you.

Fly from

New Jersey

Fly to

Ontario

Route

Depart

Return

Price

PhiladelphiaOntario

PHL - ONT

PHLONT

Philadelphia

Mon 6/30

7:19 am-11:52 am

1 stop7h 33m

Ontario

Fri 7/4

7:36 pm-5:49 am

1 stop7h 13m

$198

New YorkOntario

JFK - ONT

JFKONT

New York John F Kennedy Intl

Fri 9/5

6:35 pm-9:29 pm

Nonstop5h 54m

Ontario

Mon 9/15

10:56 pm-7:18 am

Nonstop5h 22m

$233

New YorkOntario

LGA - ONT

LGAONT

New York LaGuardia

Thu 8/14

6:30 am-12:40 pm

2 stops9h 10m

Ontario

Tue 8/19

5:45 am-5:20 pm

2 stops8h 35m

$249

New YorkOntario

JFK - ONT

JFKONT

New York John F Kennedy Intl

Wed 8/6

7:20 am-11:32 am

1 stop7h 12m

Ontario

Mon 8/11

11:59 pm-11:52 am

1 stop8h 53m

$253

New YorkOntario

LGA - ONT

LGAONT

New York LaGuardia

Fri 7/4

11:00 am-7:01 pm

2 stops11h 01m

Ontario

Wed 7/9

12:46 pm-11:35 pm

1 stop7h 49m

$257

New YorkOntario

JFK - ONT

JFKONT

New York John F Kennedy Intl

Fri 7/4

1:10 pm-7:14 pm

1 stop9h 04m

Ontario

Wed 7/30

7:22 pm-5:30 am

1 stop7h 08m

$262

New YorkOntario

JFK - ONT

JFKONT

New York John F Kennedy Intl

Tue 9/16

12:25 pm-7:42 pm

1 stop10h 17m

Ontario

Wed 9/24

12:00 pm-12:52 am

1 stop9h 52m

$267

New YorkOntario

LGA - ONT

LGAONT

New York LaGuardia

Tue 9/9

1:59 pm-7:11 pm

1 stop8h 12m

Ontario

Wed 9/10

7:05 am-8:26 pm

1 stop10h 21m

$267

NewarkOntario

EWR - ONT

EWRONT

Newark

Wed 8/6

5:30 am-11:52 am

1 stop9h 22m

Ontario

Mon 8/11

12:22 pm-10:29 pm

1 stop7h 07m

$267

New YorkOntario

LGA - ONT

LGAONT

New York LaGuardia

Sat 6/21

10:59 pm-9:01 am

1 stop13h 02m

Ontario

Fri 6/27

12:59 am-10:14 pm

1 stop18h 15m

$269

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/15

Showing 1-10 of 48 results
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Best time to book a flight from New Jersey to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from New Jersey 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 New Jersey to Ontario

What is the cheapest month to book a flight from New Jersey to Ontario?

Currently, August is the cheapest month in which you can book a flight from New Jersey to Ontario (average of $246). Flying from New Jersey to Ontario in March is currently the most expensive (average of $328). 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 NJ to ONT?

Find hourly flight availability from New Jersey to Ontario. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 16, 2025.

When flying from New Jersey to Ontario, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Rainfall in Ontario by month

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

In terms of precipitation, rainfall in Ontario ranges from 0.1 - 3.4 inches per month. February is typically the wettest month, when rainfall can reach 3.4 in. June is typically the driest time to visit Ontario when rainfall is around 0.1 in.

Temperature in Ontario by month

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

If weather is an important factor for your trip to Ontario, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 78.8 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 53.6 F).

Reviews of airlines servicing Ontario

Get insights into the airlines that provide service to Ontario. 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 Ontario. Reviews last updated June 16, 2025.
Read through reviews of airlines operating flights from New Jersey to Ontario, such as Alaska Airlines, Southwest and Delta. 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

Crew

8.5

Entertainment

7.1

Comfort

7.8

Food

7.1

Overall

8.0

Boarding

8.1

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

Crew

8.5

Entertainment

7.1

Comfort

7.8

Food

7.1

Overall

8.0

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Southwest
8.0
Very good
4,278 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Entertainment

7.1

Comfort

7.8

Food

7.1

Overall

8.0

Boarding

8.1

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
7,963 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Entertainment

7.1

Comfort

7.8

Food

7.1

Overall

8.0

Boarding

8.1

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
2,501 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Entertainment

7.1

Comfort

7.8

Food

7.1

Overall

8.0

Boarding

8.1

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
8,801 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Entertainment

7.1

Comfort

7.8

Food

7.1

Overall

8.0

Boarding

8.1

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 New Jersey to Ontario. 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 into for flights to Ontario from New Jersey?

    If you book a flight to Ontario from New Jersey, you will be flying to Ontario, which is the city’s only airport. Ontario (ONT) is located 3.1 mi from the center of Ontario.

  • What are the cheapest airlines to fly from New Jersey to Ontario one-way?

    The cheapest airline one-way is Frontier, with whom users have recently found tickets for as low as $100. However, be on the lookout for offers from Delta and American Airlines, as they are both options that can get you from New Jersey to Ontario for a low price.

  • What are the most popular routes from New Jersey to Ontario?

    Most travelers choose New York John F Kennedy Intl - Ontario, Newark - Ontario or New York LaGuardia - Ontario when deciding on the best route from New Jersey to Ontario.

  • Can I find deals for flights from New Jersey to Ontario that include hotel bookings?

    Yes. In addition to deals on New Jersey to Ontario flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from New Jersey to Ontario?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from New Jersey to Ontario.

  • Can I find deals for business class flights from New Jersey to Ontario?

    Yes. Cheapflights offers flight deals from New Jersey to Ontario 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 New Jersey to Ontario?

    Currently, August is the cheapest month in which you can book a flight from New Jersey to Ontario (average of $246). Flying from New Jersey to Ontario in March is currently the most expensive (average of $328). 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

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Alternative routes for New Jersey to Ontario

See prices for flight routes from nearby airports that may be better suited for you.
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Top 4 airlines flying from New Jersey to Ontario

Discover the top 4 airlines that operate flights from New Jersey to Ontario. 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 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$143Average$224FlexibilityNo cancel feeOn-time65%
American AirlinesCheapest$276Average$431FlexibilityNo cancel feeOn-time71%
DeltaCheapest$277Average$374FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$280Average$485FlexibilityNo cancel feeOn-time69%

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