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EWR - ONT

$113 Find cheap flights from Newark Liberty Airport to Ontario

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Newark to Ontario departing on 8/24. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
0 bags
Sat 6/29
Sat 7/6

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These are the airlines KAYAK users have selected most often from within our search results in flight searches from Newark to Ontario.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Newark to Ontario.
In the last 7 days travelers have searched 42,686,544 times on KAYAK, and here is why:

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Cheap flight deals from Newark to Ontario (EWR-ONT)

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Newark to Ontario that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
4:00 pm - 9:31 pmEWR-ONT
8h 31m1 stop
6:25 pm - 5:41 amONT-EWR
8h 16m1 stop
$246United Airlines
Find Deal
Thu, Sep 5 - Fri, Sep 20
6:00 am - 10:13 amEWR-ONT
7h 13m1 stop
12:45 pm - 10:55 pmONT-EWR
7h 10m1 stop
$256Delta
Find Deal
Sun, Sep 1 - Tue, Sep 10
7:08 am - 12:15 pmEWR-ONT
8h 07m1 stop
11:23 am - 12:57 amONT-EWR
10h 34m1 stop
$261Delta
Find Deal
Thu, Aug 29 - Thu, Sep 5
2:59 pm - 10:42 pmEWR-ONT
10h 43m2 stops
10:59 pm - 12:03 pmONT-EWR
10h 04m2 stops
$266Delta
Find Deal
Sat, Sep 14 - Tue, Sep 17
6:00 am - 10:13 amEWR-ONT
7h 13m1 stop
5:00 pm - 5:48 amONT-EWR
9h 48m1 stop
$271Delta
Find Deal
Sat, Jul 20 - Wed, Jul 24
2:40 pm - 9:11 pmEWR-ONT
9h 31m1 stop
6:00 am - 7:10 pmONT-EWR
10h 10m1 stop
$288United Airlines
Find Deal
Thu, Aug 15 - Mon, Aug 19
5:59 am - 11:47 amEWR-ONT
8h 48m1 stop
8:10 am - 10:45 pmONT-EWR
11h 35m2 stops
$290American Airlines
Find Deal
Tue, Aug 6 - Tue, Aug 13
8:00 am - 1:45 pmEWR-ONT
8h 45m1 stop
6:40 am - 10:34 pmONT-EWR
12h 54m2 stops
$291American Airlines
Find Deal
Wed, Aug 7 - Sat, Aug 17
4:00 pm - 11:54 pmEWR-ONT
10h 54m1 stop
6:00 am - 6:29 pmONT-EWR
9h 29m1 stop
$374Alaska Airlines
Find Deal
Tue, Oct 22 - Tue, Oct 29
5:53 pm - 10:40 pmEWR-ONT
31h 47m1 stop
4:24 pm - 6:57 amONT-EWR
11h 33m1 stop
$380Alaska Airlines
Find Deal
Wed, Jul 24 - Tue, Jul 30

Flights from Newark to Ontario - Travel Insights & Trends

Get data-powered insights and trends into flights from Newark to Ontario to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from Newark Liberty Airport to Ontario?

The average price of all flights from Newark Airport to Ontario clicked on KAYAK for each day over the last 12 months.
Your flight ticket price will generally be cheaper if you fly to Ontario on a Tuesday and more expensive on a Sunday. On your return trip to Newark Liberty Airport, you should consider flying back on a Tuesday, and avoid Mondays for better deals.

What is the cheapest month to fly from Newark Airport to Ontario?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Newark Airport to Ontario, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.
The cheapest month for flights from Newark Airport to Ontario is January, where tickets cost $255 on average. On the other hand, the most expensive months are December and June, where the average cost of tickets is $490 and $405 respectively.

How far in advance should I book a flight from Newark Airport to Ontario?

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from Newark Airport to Ontario, removes the top 0.1% to account for outliers, and then takes the average of all the values for each month.
To get a below average price on the flight from Newark Airport to Ontario, you should book around 2 days before departure. For the absolute cheapest price, our data suggests you should book 42 days before departure.

Which airlines provide the cheapest flights from Newark Liberty Airport to Ontario?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
The best deals for a one-way ticket found by KAYAK users over the last 3 days were on United Airlines ($113) and Delta ($128). The cheapest round-trip tickets were found on United Airlines ($246) and Delta ($256).

Good to know

Low season

January

High season

August

Cheapest flight

$113
Best time to beat the crowds with an average 22% drop in price.
Most popular time to fly and prices are also 15% lower on average.
Flight from Newark Liberty Airport to Ontario

When to book flights from Newark to Ontario

Are your dates flexible? Find out the best times to travel from Newark to Ontario based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Newark Liberty Airport to Ontario flights

  • What is the cheapest flight from Newark Airport to Ontario?

    In the last 3 days, the lowest price for a flight from Newark Airport to Ontario was $113 for a one-way ticket and $246 for a round-trip.

  • Do I need a passport to fly between Newark Liberty Airport and Ontario?

    No, a passport isn't needed to fly from Newark Liberty Airport to Ontario. However, local authorities might ask for an official ID.

  • Which airports will I be using when flying from Newark Liberty Airport to Ontario?

    Newark Liberty Airport airport is called Newark and the only airport in Ontario is Ontario.

  • Which aircraft models fly most regularly from Newark Liberty Airport to Ontario?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Newark Liberty Airport to Ontario?

    Star Alliance, SkyTeam, and oneworld are the airline alliances operating flights between Newark Liberty Airport and Ontario, with oneworld being the most commonly used for this route.

  • Which is the best airline for flights from Newark to Ontario, Delta or Alaska Airlines?

    The two airlines most popular with KAYAK users for flights from Newark to Ontario are Delta and Alaska Airlines. With an average price for the route of $396 and an overall rating of 8.0, Delta is the most popular choice. Alaska Airlines is also a great choice for the route, with an average price of $306 and an overall rating of 8.0.

  • How does KAYAK find such low prices on flights from Newark Liberty Airport to Ontario?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Newark Liberty Airport to Ontario.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Newark Liberty Airport to Ontario?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Ontario from Newark Liberty Airport is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Newark Liberty Airport to Ontario?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Ontario with an airline and back to Newark Liberty Airport with another airline. Booking your flights between Newark Liberty Airport and ONT can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Newark Liberty Airport to Ontario?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Ontario from Newark Liberty Airport up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top 4 airlines serving from Newark to Ontario

 
See real verified KAYAK customer reviews for airlines flying from Newark to Ontario. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Newark to Ontario? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
DeltaOverall score based on 10457 reviews
8.6Crew
8.2Boarding
8.0Entertainment
7.4Food
7.9Comfort
Airline reviews

Awful. Flight was continuously getting delayed and gates kept changing without any reason. Flight was delayed for more then 3 hours

2.0 MediocreNairan, May 2024JFK - FLL
Read more about Delta reviews

Awful. Flight was continuously getting delayed and gates kept changing without any reason. Flight was delayed for more then 3 hours

I'm a larger, athletic guy (6'2", 260lbs powerlifter) and I found the seats incredibly uncomfortable with minimal leg room, especially in a window seat. Now, I full understand that being smaller may change my view but even if I was 80lbs less, my legs would be the same size and I was sandwiched between my seat and the seat in front of me.

This flight was ridiculous. I had to have a connecting flight from New York to orlando Florida??? The flight left late and because it was a short flight there was no first class amenities. I had one alcohol drink. The flight crew was fine, but it sure did not feel like first class. Delta to me dropped the ball by giving me a connecting flight. By the time we got to Raleigh we would have missed the next flight. Lucky for me the flight never came so now I was stuck waiting for a later flight that came in late also.

Seat back monitors and outlets were dead and not working.

Service was good for such a short flight. Small plane but smooth flight.

The flight was delayed but we got to our final destination.

Uncomfortable seats on 14 hour flight. Mediocre food. On time and great crew.

The helpful attitude of the staff, and being a wheelchair passenger everyone was helpful and understanding. The trip was made comfortable by the upgraded seat which was given without my request, that was a great surprise. Thank you Delta.

Gate crew helping to scan tickets was a little short tempered with customers. Flight crew was very friendly, welcoming , and provided excellent service on board.

Everything went well with the flight. But one of the flight attendants had on inappropriate pants. She had on an old worn out pair of sweat pants. The back seam was unrivaled and should not have been worn for work. If I had not seen her in the airport with the standard type of luggage, I certainly would not have thought she was working for Delta. Not a good look at all for representation.

Fantastic. Smooth boarding with an infant. Never experienced it with any other carriers.

An hour and a half late is UNACCEPTABLE. The negative impact to our family is unconscionable. And for the price we were forced to pay...

flight delays, staff only communicating when pushed, food service lasting a grand total of 7 minutes, stuck in seat from 45mins into flight until landing

Nice flight, nice crew but no cookie or napkin with my seltzer.

The flight was canceled. Got rebooked to Chicago and when we arrived our luggage where to there. They were going to our original destination the day after. They would not deliver them to our house. We had to go pick them up.

737 Max was leaking water into the cabin through the windows. Overhead bins opened on landing. Bad bad plane.

Other than the two hour delay, it was fine. Of course they were very professional and kept us informed throughout the whole delay..

Airline did not explain reasons why flight was delayed two hours. Explanations were badly needed and rarely provided. Problem seemed to clearly be the airline’s fault and not the fault of the weather or airport.

Easy boarding in group 2. Landed 1/2 hr early. Delicious cookie snack.

Good. The wife was not working but then it got resolved.

Everything was great except for the wifi was junk. Crew was super friendly and helpful

WiFi connected but only let you go to the AA website, not even text messaging worked.

Generally good but we were delayed almost two hours from the original time of purchase. The pilot claimed an internal issue then an external equipment issue that needed to be adddressed. He made up a lot of the time.

The flight was excellent, provided that we had inclement weather. We departed earlier than scheduled and arrived early. There was a little turbulence, but nothing to be worried about.

pleased with overall experienced, but seats in coach are tight.

Don't often sit in 1st class. Our experience was great.

The 2 hour delay was frustrating but our crew did a great job getting us out quickly and keeping communication especially with the people who had connecting flights

It was right on time and crew were very courteous

Amazing flight with an amazing crew. Truly impressed with how the flight was on time leaving and landed early. Bags came out quickly too. One of the best flights!! I’m

American always delays flight so it stressful getting the next connection

This recognisable no-frills airline gets me from point-A to point-B. I was able to get to Chicago without stress. The checked baggage collection and reclaim could be improved.

Pretty good. Would’ve been excellent if we would have left on time and the crew wasn’t late.

Spirit airline tries to screw you at every opportunity. Spirit wanted 65$ for an extra pound in the suitcase Made me open the suitcase at the counter to remove 1 pound. Staff very cold and rude Will never fly spirit again and will recommend same to family and friends

Overall it was a good experience. Stewards were very kind and professional. The departure and arrival times were as promised. Plane was clean.

No frills, limited comfort, no food, no entertainment, but fine

The airplane was extremely hot the air conditioner wasn’t working I

Seats horrible. No way of getting comfortable . But flight ran smoothly

Every thing was fine ,low price,easy on time ,clean, good staff, really no issues

Unfortunately not great, my flight was canceled with no notice given. I attempted to reach out to spirit airlines and have yet to receive any correspondence. I then had to book a new flight at two times the cost of the original.

The price is good but I feel that carry-on bag could be a little low and snacks prices

Book cheap flights from Newark to Ontario

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Newark to Ontario found on KAYAK in the last 72 hours.
8/24Sat
1 stopUnited Airlines
8h 31mEWR-ONT
$113
9/1Sun
1 stopDelta
7h 13mEWR-ONT
$128
8/26Mon
1 stopDelta
7h 13mEWR-ONT
$133
8/14Wed
1 stopDelta
9h 44mEWR-ONT
$138
8/7Wed
1 stopDelta
9h 44mEWR-ONT
$143
9/11Wed
1 stopAmerican Airlines
7h 22mEWR-ONT
$144
8/21Wed
1 stopUnited Airlines
8h 41mEWR-ONT
$163
8/17Sat
1 stopAmerican Airlines
7h 38mEWR-ONT
$181
9/14Sat
2 stopsAlaska Airlines
14h 45mEWR-ONT
$194
9/9Mon
1 stopAlaska Airlines
31h 41mEWR-ONT
$217

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Last minute flights from Newark to Ontario

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights from Newark to Ontario that are departing in the next 10 days.
6/4Tue
multi-stopUnited Airlines
9h 47mEWR-ONT
6/7Fri
multi-stopUnited Airlines
8h 15mONT-EWR
$469
6/4Tue
multi-stopDelta
9h 06mEWR-ONT
6/8Sat
multi-stopDelta
9h 14mONT-EWR
$485
6/4Tue
multi-stopUnited Airlines
8h 18mEWR-ONT
6/14Fri
multi-stopUnited Airlines
8h 15mONT-EWR
$510
6/4Tue
multi-stopAlaska Airlines
11h 07mEWR-ONT
6/5Wed
multi-stopAlaska Airlines
10h 34mONT-EWR
$572
6/3Mon
multi-stopDelta
9h 06mEWR-ONT
6/6Thu
multi-stopDelta
7h 20mONT-EWR
$579
6/2Sun
multi-stopAlaska Airlines
11h 07mEWR-ONT
6/5Wed
multi-stopAlaska Airlines
10h 34mONT-EWR
$581
6/3Mon
multi-stopDelta
8h 03mEWR-ONT
6/6Thu
multi-stopDelta
9h 05mONT-EWR
$585
6/4Tue
multi-stopUnited Airlines
9h 37mEWR-ONT
6/10Mon
multi-stopUnited Airlines
8h 15mONT-EWR
$623
6/1Sat
multi-stopAmerican Airlines
8h 03mEWR-ONT
6/1Sat
multi-stopAmerican Airlines
8h 03mONT-EWR
$850
5/31Fri
multi-stopAmerican Airlines
8h 00mEWR-ONT
6/8Sat
multi-stopAmerican Airlines
8h 06mONT-EWR
$855

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Newark Liberty Airport - Ontario Flights

Departure:

Newark Liberty Airport (EWR)United States

Destination:

Ontario (ONT)United States

Return flight deals:

Ontario - Newark Liberty Airport

Cabin classes: