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Ontario

$104+ 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 9/3. Fares are subject to change and may not be available on all flights or dates of travel.
EWR — ONT
Aug 5 — Aug 121
Tue 8/5
Tue 8/12
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 July 31, 2025.

Round-trip from

$245
(Cheapflightsfares)

One-way from

$104
(Trip.com)

Popular in

December

Cheapest in

September

Average price

$372
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. 8% potential increase in price ($31 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 July 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 July 31, 2025.

This Rumbo deal was found by Cheapflights users on 7/29. 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 Rumbo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/306:50 pmJFK - ONT
Nonstop6h 09mJetBlue
Sat 9/610:56 pmONT - JFK
Nonstop5h 22mJetBlue
Deal found 7/29$248
This Gotogate deal was found by Cheapflights users on 7/30. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/306:59 amJFK - ONT
1 stop12h 12mFrontier
Sat 9/61:37 pmONT - JFK
1 stop12h 53mFrontier
Deal found 7/30$255
This Gotogate deal was found by Cheapflights users on 7/30. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/3010:50 pmLGA - ONT
1 stop28h 00mFrontier
Sat 9/68:59 pmONT - LGA
1 stop22h 12mFrontier
Deal found 7/30$255
This SmartFares deal was found by Cheapflights users on 7/30. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/155:48 pmEWR - ONT
1 stop9h 06mAlaska Airlines
Mon 9/223:06 pmONT - EWR
1 stop11h 53mAlaska Airlines
Deal found 7/30$255
This Gotogate deal was found by Cheapflights users on 7/30. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/308:00 amPHL - ONT
1 stop26h 33mFrontier
Sat 9/68:59 pmONT - PHL
1 stop24h 58mFrontier
Deal found 7/30$256
This United Airlines deal was found by Cheapflights users on 7/29. 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 9/1711:25 amEWR - ONT
1 stop9h 12mUnited Airlines
Tue 9/237:00 amONT - EWR
1 stop7h 47mUnited Airlines
Deal found 7/29$262
This American Airlines deal was found by Cheapflights users on 7/30. 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.
Thu 9/47:00 amEWR - ONT
1 stop7h 56mAmerican Airlines
Wed 9/101:10 pmONT - EWR
1 stop6h 49mAmerican Airlines
Deal found 7/30$265
This American Airlines deal was found by Cheapflights users on 7/29. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/112:59 pmLGA - ONT
1 stop9h 12mAmerican Airlines
Mon 9/1510:35 pmONT - LGA
1 stop9h 54mAmerican Airlines
Deal found 7/29$267
This American Airlines deal was found by Cheapflights users on 7/29. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/276:59 amJFK - ONT
2 stops9h 40mAmerican Airlines
Wed 9/38:15 amONT - JFK
1 stop10h 14mAmerican Airlines
Deal found 7/29$272
This Delta deal was found by Cheapflights users on 7/31. 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 9/161:30 pmJFK - ONT
1 stop8h 45mDelta
Sat 9/2011:50 amONT - JFK
1 stop9h 19mDelta
Deal found 7/31$281
This Delta deal was found by Cheapflights users on 7/29. 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.
Sat 11/14:51 pmEWR - ONT
1 stop7h 29mDelta
Mon 11/105:05 pmONT - EWR
1 stop10h 05mDelta
Deal found 7/29$281
This Delta deal was found by Cheapflights users on 7/31. 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.
Thu 9/113:00 pmLGA - ONT
1 stop10h 23mDelta
Mon 9/1510:00 pmONT - LGA
2 stops10h 46mDelta
Deal found 7/31$282

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 July 31, 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

New YorkOntario

JFK - ONT

JFKONT

New York John F Kennedy Intl

Sat 8/30

6:50 pm-9:59 pm

Nonstop6h 09m

Ontario

Sat 9/6

10:56 pm-7:18 am

Nonstop5h 22m

$248

New YorkOntario

LGA - ONT

LGAONT

New York LaGuardia

Sat 8/30

10:50 pm-11:50 pm

1 stop28h 00m

Ontario

Sat 9/6

8:59 pm-10:11 pm

1 stop22h 12m

$255

NewarkOntario

EWR - ONT

EWRONT

Newark

Mon 9/15

5:48 pm-11:54 pm

1 stop9h 06m

Ontario

Mon 9/22

3:06 pm-5:59 am

1 stop11h 53m

$255

New YorkOntario

JFK - ONT

JFKONT

New York John F Kennedy Intl

Sat 8/30

6:59 am-4:11 pm

1 stop12h 12m

Ontario

Sat 9/6

1:37 pm-5:30 am

1 stop12h 53m

$255

PhiladelphiaOntario

PHL - ONT

PHLONT

Philadelphia

Sat 8/30

8:00 am-4:11 pm

1 stop11h 11m

Ontario

Sat 9/6

8:59 pm-12:57 am

1 stop24h 58m

$256

NewarkOntario

EWR - ONT

EWRONT

Newark

Wed 9/17

11:25 am-5:37 pm

1 stop9h 12m

Ontario

Tue 9/23

7:00 am-5:47 pm

1 stop7h 47m

$262

NewarkOntario

EWR - ONT

EWRONT

Newark

Thu 9/4

7:00 am-11:56 am

1 stop7h 56m

Ontario

Wed 9/10

1:10 pm-10:59 pm

1 stop6h 49m

$265

New YorkOntario

LGA - ONT

LGAONT

New York LaGuardia

Thu 9/11

2:59 pm-9:11 pm

1 stop9h 12m

Ontario

Mon 9/15

10:35 pm-11:29 am

1 stop9h 54m

$267

New YorkOntario

JFK - ONT

JFKONT

New York John F Kennedy Intl

Wed 8/27

6:59 am-1:39 pm

2 stops9h 40m

Ontario

Wed 9/3

8:15 am-9:29 pm

1 stop10h 14m

$272

New YorkOntario

JFK - ONT

JFKONT

New York John F Kennedy Intl

Tue 9/16

6:00 am-10:42 am

1 stop7h 42m

Ontario

Sat 9/20

11:50 am-12:09 am

1 stop9h 19m

$281

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/31

Showing 1-10 of 44 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 July 31, 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.

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 July 31, 2025.
Read through reviews of airlines operating flights from New Jersey to Ontario, such as Alaska Airlines, Southwest, and Delta. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Comfort

7.8

Boarding

8.1

Food

7.1

Overall

8.0

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

Entertainment

7.1

Comfort

7.8

Boarding

8.1

Food

7.1

Overall

8.0

Crew

8.5

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
4,246 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Comfort

7.8

Boarding

8.1

Food

7.1

Overall

8.0

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
7,981 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Comfort

7.8

Boarding

8.1

Food

7.1

Overall

8.0

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
2,611 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Comfort

7.8

Boarding

8.1

Food

7.1

Overall

8.0

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
8,900 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Comfort

7.8

Boarding

8.1

Food

7.1

Overall

8.0

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 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 $125. However, be on the lookout for offers from Alaska Airlines 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 Newark - Ontario, New York John F Kennedy Intl - 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 July 31, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$116Average$208FlexibilityNo cancel feeOn-time65%
American AirlinesCheapest$276Average$413FlexibilityNo cancel feeOn-time71%
DeltaCheapest$280Average$374FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$282Average$469FlexibilityNo cancel feeOn-time69%

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