EWR - ONT

$103 Find Cheap Flights from Newark Liberty Airport to Ontario - 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 Newark to Ontario departing on 10/1. 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

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Everything you should know

Cheapest round-trip
$208
Typical prices: $296-$738
Frontier
Thu 9/10Mon 9/21
EWR - ONT • 1 stop
Cheapest one-way
$103
Typical prices: $188-$259
Frontier
Thu 10/1
EWR - ONT • 1 stop
Nonstop flights
Not available
There are currently no direct flights between Newark and Ontario. You'll need at least 1 connection.
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Top layover airports
Dallas (DFW)
Cheapest • Avg $462 (round-trip)
Salt Lake City (SLC)
Shortest trip • 8h 06m (one-way)
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When to book
2 weeks
in advance
Our data shows that travelers who book at least 2 weeks in advance save around 9% compared to booking last minute.
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When to travel
November
Cheapest • 24% price drop
June
Most popular
Good to know
Good to know
+1
+1
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+1
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Booking Insights
Flight Deals

Cheap Flights 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 for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Newark to Ontario

Thu, Sep 10 - Mon, Sep 21
Frontier Logo
1:30 pm - 6:39 pmEWR  Newark-ONT Ontario
8h 09m1 stop Dallas/Fort Worth
Frontier Logo
7:46 pm - 12:35 pmONT  Ontario-EWR Newark
13h 49m1 stop Dallas/Fort Worth
$208Frontier
Thu, Oct 1 - Sun, Oct 4
Frontier Logo
1:30 pm - 6:39 pmEWR  Newark-ONT Ontario
8h 09m1 stop Dallas/Fort Worth
Frontier Logo
7:46 pm - 12:35 pmONT  Ontario-EWR Newark
13h 49m1 stop Dallas/Fort Worth
$208Frontier
Fri, Sep 18 - Mon, Sep 21
Frontier Logo
1:30 pm - 6:39 pmEWR  Newark-ONT Ontario
8h 09m1 stop Dallas/Fort Worth
Frontier Logo
7:46 pm - 12:35 pmONT  Ontario-EWR Newark
13h 49m1 stop Dallas/Fort Worth
$208Frontier
Fri, Jan 15 - Sat, Jan 23
American Airlines Logo
2:20 pm - 8:48 pmEWR  Newark-ONT Ontario
9h 28m1 stop Chicago O'Hare Intl
American Airlines Logo
6:00 am - 11:29 pmONT  Ontario-EWR Newark
14h 29m1 stop Chicago O'Hare Intl
$356American Airlines
Sat, Sep 12 - Sat, Sep 19
American Airlines Logo
7:20 am - 12:03 pmEWR  Newark-ONT Ontario
7h 43m1 stop Phoenix Sky Harbor Intl
American Airlines Logo
1:05 pm - 11:40 pmONT  Ontario-EWR Newark
7h 35m1 stop Phoenix Sky Harbor Intl
$377American Airlines
Sat, Sep 12 - Sat, Sep 19
American Airlines Logo
7:20 am - 12:03 pmEWR  Newark-ONT Ontario
7h 43m1 stop Phoenix Sky Harbor Intl
American Airlines Logo
1:05 pm - 11:40 pmONT  Ontario-EWR Newark
7h 35m1 stop Phoenix Sky Harbor Intl
$378American Airlines
Sat, Oct 17 - Sat, Oct 24
United Airlines Logo
2:50 pm - 10:49 pmEWR  Newark-ONT Ontario
10h 59m1 stop Chicago O'Hare Intl
United Airlines Logo
7:00 am - 5:18 pmONT  Ontario-EWR Newark
7h 18m1 stop Chicago O'Hare Intl
$379United Airlines
Thu, Sep 10 - Sat, Sep 19
Delta Logo
7:15 am - 12:14 pmEWR  Newark-ONT Ontario
7h 59m1 stop Salt Lake City
Delta Logo
6:00 am - 5:49 pmONT  Ontario-EWR Newark
8h 49m1 stop Salt Lake City
$379Delta
Sun, Sep 6 - Sat, Sep 19
Delta Logo
7:15 am - 12:16 pmEWR  Newark-ONT Ontario
8h 01m1 stop Salt Lake City
Delta Logo
12:17 pm - 11:57 pmONT  Ontario-EWR Newark
8h 40m1 stop Atlanta Hartsfield-Jackson
$379Delta
Fri, Aug 28 - Sat, Sep 5
United Airlines Logo
1:20 pm - 8:01 pmEWR  Newark-ONT Ontario
9h 41m1 stop San Francisco
United Airlines Logo
1:18 pm - 11:33 pmONT  Ontario-EWR Newark
7h 15m1 stop Denver Intl
$419United Airlines
Booking Insights

KAYAK's insights & trends for Newark to Ontario flights

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.

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

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

Flight prices are below average for this route right now.

Flights to Ontario from Newark Airport usually cost between $408 and $502 in October.
The lowest price found in the past 5 days was $208 on Frontier (Oct 2-Oct 4).

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 round-trip 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 November, where tickets cost $351 (return) on average. On the other hand, the most expensive months are June and July, where the average cost of round-trip tickets is $633 and $557 respectively.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip 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 week.

To get a below average price on the flight from Newark Airport to Ontario, you should book around 2 weeks before departure, which saves you about 9% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 9 weeks before departure.

Find deals

Good to know

Low season

February

Cheapest flight

$103
Best time to beat the crowds but there is an average 15% increase in price.
Most popular time to fly with an average 36% increase in price.
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 5 days, the lowest price for a flight from Newark Airport to Ontario was $103 for a one-way ticket and $208 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?

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

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

    The two airlines most popular with KAYAK users for flights from Newark to Ontario are Delta and United Airlines. With an average price for the route of $435 and an overall rating of 7.8, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $548 and an overall rating of 7.4.

  • 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.

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

Information on your arrival and departure airports

Newark Liberty Airport (EWR)
Ontario (ONT)