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EWR - ONT

$132 Find Cheap Flights from Newark Liberty Airport to Ontario - Compare and Save

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1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$273
Typical prices: $371-$568
Frontier
Sat 11/17Sun 12/2
EWR - ONT • 2 stops
Cheapest one-way
$132
Typical prices: $204-$357
Frontier
Sat 11/10
EWR - ONT • 2 stops
Nonstop flights
Not available
There are currently no direct flights between Newark Airport and Ontario. You'll need to take a connecting flight to reach the destination.
Insights
Insights
When to travel
November
Cheapest • 19% price drop
May
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Dallas/Fort Worth (DFW)
Cheapest • Avg $458 (round-trip)
Phoenix Sky Harbor Intl (PHX)
Shortest trip • 7h 53m (one-way)
Insights
Insights
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Flight Deals

Cheap Flights from Newark to Ontario (EWR-ONT)

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Newark to Ontario

Tue, Nov 17 - Wed, Dec 2
Frontier Logo
10:14 pm - 10:35 amEWR  Newark-ONT Ontario
15h 21m2 stops Atlanta Hartsfield-Jackson Denver Intl
Frontier Logo
11:30 am - 10:52 amONT  Ontario-EWR Newark
20h 22m2 stops Denver Intl Atlanta Hartsfield-Jackson
$273Frontier
Fri, Oct 30 - Tue, Nov 3
Frontier Logo
10:14 pm - 10:42 amEWR  Newark-ONT Ontario
15h 28m2 stops Atlanta Hartsfield-Jackson Denver Intl
Frontier Logo
11:52 am - 10:36 amONT  Ontario-EWR Newark
19h 44m2 stops Denver Intl Atlanta Hartsfield-Jackson
$280Frontier
Thu, Jan 21 - Sun, Jan 24
United Airlines Logo
3:50 pm - 8:20 pmEWR  Newark-ONT Ontario
7h 30m1 stop Denver Intl
United Airlines Logo
6:53 pm - 7:14 amONT  Ontario-EWR Newark
9h 21m1 stop San Francisco
$394United Airlines
Fri, Oct 23 - Wed, Nov 4
Alaska Airlines Logo
5:05 pm - 11:54 pmEWR  Newark-ONT Ontario
9h 49m1 stop Portland
Alaska Airlines Logo
12:02 pm - 11:59 pmONT  Ontario-EWR Newark
8h 57m1 stop Seattle/Tacoma Intl
$398Alaska Airlines
Fri, Oct 23 - Tue, Nov 3
Alaska Airlines Logo
5:05 pm - 11:54 pmEWR  Newark-ONT Ontario
9h 49m1 stop Portland
Alaska Airlines Logo
12:02 pm - 11:59 pmONT  Ontario-EWR Newark
8h 57m1 stop Seattle/Tacoma Intl
$398Alaska Airlines
Fri, Oct 30 - Wed, Nov 4
United Airlines Logo
2:13 pm - 9:40 pmEWR  Newark-ONT Ontario
10h 27m1 stop Houston George Bush Intcntl
United Airlines Logo
1:29 pm - 11:42 pmONT  Ontario-EWR Newark
7h 13m1 stop Denver Intl
$399United Airlines
Tue, Oct 27 - Tue, Nov 3
American Airlines Logo
6:59 am - 12:14 pmEWR  Newark-ONT Ontario
8h 15m1 stop Phoenix Sky Harbor Intl
American Airlines Logo
12:42 pm - 11:00 pmONT  Ontario-EWR Newark
7h 18m1 stop Dallas/Fort Worth
$399American Airlines
Thu, Oct 29 - Sun, Nov 1
American Airlines Logo
6:59 am - 12:14 pmEWR  Newark-ONT Ontario
8h 15m1 stop Phoenix Sky Harbor Intl
American Airlines Logo
4:25 pm - 5:14 amONT  Ontario-EWR Newark
9h 49m1 stop Phoenix Sky Harbor Intl
$399American Airlines
Thu, Nov 12 - Sun, Nov 15
Delta Logo
3:21 pm - 9:57 pmEWR  Newark-ONT Ontario
9h 36m1 stop Atlanta Hartsfield-Jackson
Delta Logo
11:10 pm - 9:30 amONT  Ontario-EWR Newark
7h 20m1 stop Atlanta Hartsfield-Jackson
$399Delta
Tue, Feb 16 - Tue, Feb 23
Delta Logo
4:00 pm - 10:14 pmEWR  Newark-ONT Ontario
9h 14m1 stop Atlanta Hartsfield-Jackson
Delta Logo
5:05 pm - 6:04 amONT  Ontario-EWR Newark
9h 59m1 stop Salt Lake City
$399Delta
Booking Insights

Price, demand and travel trends for Newark Airport to Ontario flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights with more confidence.

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

Round-trip flights from Newark Airport to Ontario typically range from $371 to $568. The lowest price found in the past 5 days was $273, on Frontier.

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

Based on deals KAYAK users found in the last 12 months, Saturday is the cheapest day of the week to fly from Newark Airport to Ontario. It’s 14% cheaper than the average day, while Sunday is the most expensive, with prices 39% higher.

What’s the cheapest month to fly from Newark Airport to Ontario?

•November is the cheapest month to fly from Newark Airport to Ontario at $361 round-trip.
•July ($594) and February ($558) are the most expensive months.
•The price difference between flying in the cheapest and most expensive months is 64% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.

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Key details for Newark Airport to Ontario flights

Low season

February

Cheapest flight

$132
Beat the crowds with an average 78% drop in travelers.
The most popular month to fly with an average 46% increase in travelers.
One-way flight from Newark 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

Your Newark Airport to Ontario flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines and booking tips.

  • What cabin classes can I book on flights from Newark Airport to Ontario?

    Three cabin classes are available on flights from Newark Airport to Ontario:

    • Economy Class
    • Business Class
    • First Class

  • How long is a flight from Newark Airport to Ontario?

    A nonstop flight from Newark Airport to Ontario takes 00m, covering 2,401 miles.

  • Do I need a passport to fly from Newark Airport to Ontario?

    No, a passport is not required for this domestic route, but you will need a real ID-compliant driver's license, a state ID or another TSA-accepted form of identification.

  • How much should I expect to pay for a Newark Airport to Ontario flight?

    Round-trip flights from Newark Airport to Ontario range from $371 to $568, with an average of $444 over the past 12 months. Anything below $371 counts as a good deal.

  • How are flight prices from Newark Airport to Ontario looking right now?

    One-way fares from Newark Airport to Ontario are currently lower than usual. Average one-way flight prices are about $189, which is 32% below the typical average for this route.

  • What car rental options are available at Ontario Airport (ONT)?

    Ontario Airport (ONT) hosts 5 major car rental companies, with daily rates starting from around $18 for economy cars. Top options include:

    • Fox
    • Thrifty
    • Europcar
    • Dollar
    • Alamo

  • Which airports can I use when flying from Newark Airport to Ontario?

    Flights from Newark Airport to Ontario usually depart from Newark (EWR) and arrive at Ontario (ONT).

  • Which airports do connecting flights from Newark Airport to Ontario pass through?

    One-stop flights from Newark Airport to Ontario most commonly connect through:

    • Phoenix Sky Harbor Intl (PHX) - 34% of one-stop connections
    • Denver Intl (DEN) - 22% of one-stop connections
    • Atlanta Hartsfield-Jackson (ATL) - 14% of one-stop connections
    • Dallas/Fort Worth (DFW) - 7% of one-stop connections

  • Can I save money by using flexible dates for flights from Newark Airport to Ontario?

    Yes. Flexible dates can save you up to 38% on flights from Newark Airport to Ontario. Saturday is the cheapest departure day at $386 round-trip on average, while Sunday is the most expensive at $618, a difference of $232.

    Cheaper weekend fares like these are typical of routes dominated by weekday business travel.

  • How much time can I save by choosing a different layover airport from Newark Airport to Ontario?

    Flying via Phoenix Sky Harbor Intl (PHX) gives the shortest average 1-stop total travel time at 7h 53m, compared with 7h 57m via Salt Lake City (SLC) and 8h 13m via Denver Intl (DEN).

  • What is the time difference between Newark Airport and Ontario?

    Ontario is 3 hours behind Newark Airport (Pacific Time vs Eastern Time). Plan for the time shift when scheduling connections or first-day activities.

  • What popular places can I visit in Ontario?

    Some of the most popular sights in Ontario are Ontario Convention Center and Cucamonga-Guasti Regional Park. These are among the most viewed places in Ontario on KAYAK.

Your guide to booking Newark Airport to Ontario flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your dates are flexible, aim for a Saturday departure and avoid flying on Sunday. On this route, Saturday flights average $386, about $232 less than Sunday fares (38% savings) based on the last 12 months.
  • If you can choose when to travel, plan your Newark Airport to Ontario trip for November. Fares historically average $361 round-trip in that month - typically $233 less than the most expensive month, which is July (based on the last 12 months).
  • If you're arriving late at night and need somewhere to stay, check out these hotels close to Ontario Airport.

    • Azure Hotel & Suites, Trademark Collection by Wyndham
    • La Quinta Inn & Suites by Wyndham Ontario Airport
    • Ontario Airport Inn

More options for your flight from Newark to Ontario

Complete your trip to Ontario with a hotel stay or car rental

Car rentals in Ontario
Hotels in Ontario
Vacations in Ontario