ONT - EWR

$108 Find Cheap Flights from Ontario to Newark Liberty Airport - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Ontario to Newark departing on 9/21. 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
1 adult, Economy, 0 bags

Save 21% or more on flights. Compare deals from all over the web.

Never overpay with our price tracking tools.

Filter searches by price, airline and more to find your best flights.

Everything you should know

Cheapest round-trip
$208
Typical prices: $318-$548
Frontier
Mon 10/5Thu 10/15
ONT - EWR • 1 stop
Cheapest one-way
$108
Typical prices: $188-$278
Frontier
Mon 9/21
ONT - EWR • 1 stop
Nonstop flights
Not available
There are currently no direct flights between Ontario and Newark. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Chicago (ORD)
Cheapest • Avg $435 (round-trip)
Phoenix (PHX)
Shortest trip • 7h 35m (one-way)
Insights
Insights
Insights
Insights
When to book
4 weeks
in advance
Our data shows that travelers who book at least 4 weeks in advance save around 25% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
October
Cheapest • 28% price drop
December
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Newark!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Ontario to Newark (ONT-EWR)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Ontario to Newark 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 for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Ontario to Newark

Mon, Oct 5 - Thu, Oct 15
Frontier Logo
7:46 pm - 12:35 pmONT  Ontario-EWR Newark
13h 49m1 stop Dallas/Fort Worth
Frontier Logo
1:45 pm - 7:05 pmEWR  Newark-ONT Ontario
8h 20m1 stop Dallas/Fort Worth
$208Frontier
Fri, Sep 25 - Thu, Oct 1
Frontier Logo
7:46 pm - 12:35 pmONT  Ontario-EWR Newark
13h 49m1 stop Dallas/Fort Worth
Frontier Logo
1:30 pm - 6:39 pmEWR  Newark-ONT Ontario
8h 09m1 stop Dallas/Fort Worth
$208Frontier
Wed, Jan 20 - Sun, Jan 24
American Airlines Logo
6:00 am - 9:28 pmONT  Ontario-EWR Newark
12h 28m1 stop Chicago O'Hare Intl
American Airlines Logo
6:30 am - 12:03 pmEWR  Newark-ONT Ontario
8h 33m1 stop Phoenix Sky Harbor Intl
$346American Airlines
Thu, Jan 21 - Sun, Jan 24
American Airlines Logo
6:00 am - 11:29 pmONT  Ontario-EWR Newark
14h 29m1 stop Chicago O'Hare Intl
American Airlines Logo
10:20 am - 4:07 pmEWR  Newark-ONT Ontario
8h 47m1 stop Phoenix Sky Harbor Intl
$346American Airlines
Tue, Jan 26 - Mon, Feb 1
Alaska Airlines Logo
6:00 am - 6:56 pmONT  Ontario-EWR Newark
9h 56m1 stop Seattle/Tacoma Intl
Alaska Airlines Logo
7:17 am - 2:47 pmEWR  Newark-ONT Ontario
10h 30m1 stop Seattle/Tacoma Intl
$352Alaska Airlines
Wed, Nov 4 - Sat, Nov 7
United Airlines Logo
7:00 am - 6:47 pmONT  Ontario-EWR Newark
8h 47m1 stop Chicago O'Hare Intl
United Airlines Logo
3:29 pm - 8:51 pmEWR  Newark-ONT Ontario
8h 22m1 stop Denver Intl
$379United Airlines
Wed, Sep 16 - Sun, Sep 20
United Airlines Logo
1:18 pm - 11:58 pmONT  Ontario-EWR Newark
7h 40m1 stop Denver Intl
United Airlines Logo
6:00 am - 12:50 pmEWR  Newark-ONT Ontario
9h 50m1 stop Denver Intl
$379United Airlines
Mon, Sep 14 - Tue, Sep 22
Delta Logo
5:15 pm - 6:00 amONT  Ontario-EWR Newark
9h 45m1 stop Salt Lake City
Delta Logo
7:15 am - 12:14 pmEWR  Newark-ONT Ontario
7h 59m1 stop Salt Lake City
$379Delta
Sat, Sep 12 - Sat, Sep 19
Delta Logo
12:17 pm - 11:57 pmONT  Ontario-EWR Newark
8h 40m1 stop Atlanta Hartsfield-Jackson
Delta Logo
7:15 am - 12:14 pmEWR  Newark-ONT Ontario
7h 59m1 stop Salt Lake City
$379Delta
Fri, Oct 2 - Tue, Oct 6
Alaska Airlines Logo
7:12 am - 11:29 pmONT  Ontario-EWR Newark
13h 17m1 stop Portland
Alaska Airlines Logo
7:03 am - 6:00 pmEWR  Newark-ONT Ontario
13h 57m1 stop Seattle/Tacoma Intl
$379Alaska Airlines
Booking Insights

KAYAK's insights & trends for Ontario to Newark flights

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

How much is a round-trip flight from Ontario to Newark Airport?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Ontario to Newark Airport departing in September.

Flight prices are below average for this route right now.

Flights to Newark Airport from Ontario usually cost between $362 and $565 in September.
The lowest price found in the past 5 days was $208 on Frontier (Sep 25-Oct 1).

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Ontario to Newark Airport, 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 Ontario to Newark Airport is October, where tickets cost $362 (return) on average. On the other hand, the most expensive months are July and June, where the average cost of round-trip tickets is $599 and $590 respectively.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Ontario to Newark Airport, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Ontario to Newark Airport, you should book around 4 weeks before departure, which saves you about 25% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 18 weeks before departure.

Find deals

Good to know

Low season

February

Cheapest flight

$108
Best time to beat the crowds with an average 9% drop in price.
Most popular time to fly and prices are also 3% lower on average.
Flight from Ontario to Newark Liberty Airport

When to book flights from Ontario to Newark

Are your dates flexible? Find out the best times to travel from Ontario to Newark 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 Ontario to Newark Liberty Airport flights

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

    In the last 5 days, the lowest price for a flight from Ontario to Newark Airport was $108 for a one-way ticket and $208 for a round-trip.

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

    No

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

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

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

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

  • What is the most popular layover when flying to Newark Liberty Airport from Ontario?

    Phoenix is the most popular layover city among KAYAK users traveling from Ontario to Newark Liberty Airport.

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

    The two airlines most popular with KAYAK users for flights from Ontario to Newark are Alaska Airlines and Delta. With an average price for the route of $511 and an overall rating of 7.9, Alaska Airlines is the most popular choice. Delta is also a great choice for the route, with an average price of $516 and an overall rating of 7.8.

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

    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 Ontario to Newark Liberty Airport.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Newark Liberty Airport from Ontario 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 Ontario to Newark Liberty Airport?

    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 Newark Liberty Airport with an airline and back to Ontario with another airline. Booking your flights between Ontario and EWR 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 Ontario to Newark Liberty Airport?

    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 Newark Liberty Airport from Ontario up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Everything you need to know for your flight from Ontario to Newark

Information on your arrival and departure airports

Ontario (ONT)
Newark (EWR)