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Cheap Flights from New York (EWR) to Ontario (ONT)

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Compare New York Newark to Ontario International flight deals

Find the cheapest month or even day of the year to fly to Ontario International

Book the best Ontario International fare with no extra fees

Flight deals from New York Newark to Ontario International

Looking for a cheap last-minute deal or the best return flight from New York Newark to Ontario International? Find the lowest prices on one-way and return tickets right here.
Ontario.$417 per passenger.Departing Tue, 16 Sep, returning Sat, 20 Sep.Return flight with Hawaiian Airlines.Outbound indirect flight with Hawaiian Airlines, departs from New York Newark on Tue, 16 Sep, arriving in Ontario International.Inbound indirect flight with Hawaiian Airlines, departs from Ontario International on Sat, 20 Sep, arriving in New York Newark.Price includes taxes and charges.From $417, select.
Ontario.$428 per passenger.Departing Wed, 13 Aug, returning Wed, 20 Aug.Return flight with Delta.Outbound indirect flight with Delta, departs from New York Newark on Wed, 13 Aug, arriving in Ontario International.Inbound indirect flight with Delta, departs from Ontario International on Wed, 20 Aug, arriving in New York Newark.Price includes taxes and charges.From $428, select.
Ontario.$443 per passenger.Departing Sat, 4 Oct, returning Sun, 12 Oct.Return flight with United.Outbound indirect flight with United, departs from New York Newark on Sat, 4 Oct, arriving in Ontario International.Inbound indirect flight with United, departs from Ontario International on Sun, 12 Oct, arriving in New York Newark.Price includes taxes and charges.From $443, select.
Ontario.$445 per passenger.Departing Tue, 8 Jul, returning Fri, 11 Jul.Return flight with Delta.Outbound indirect flight with Delta, departs from New York Newark on Tue, 8 Jul, arriving in Ontario International.Inbound indirect flight with Delta, departs from Ontario International on Fri, 11 Jul, arriving in New York Newark.Price includes taxes and charges.From $445, select.
Ontario.$451 per passenger.Departing Thu, 28 Aug, returning Thu, 4 Sep.Return flight with United.Outbound indirect flight with United, departs from New York Newark on Thu, 28 Aug, arriving in Ontario International.Inbound indirect flight with United, departs from Ontario International on Thu, 4 Sep, arriving in New York Newark.Price includes taxes and charges.From $451, select.
Ontario.$458 per passenger.Departing Tue, 30 Sep, returning Fri, 10 Oct.Return flight with Hawaiian Airlines.Outbound indirect flight with Hawaiian Airlines, departs from New York Newark on Tue, 30 Sep, arriving in Ontario International.Inbound indirect flight with Hawaiian Airlines, departs from Ontario International on Fri, 10 Oct, arriving in New York Newark.Price includes taxes and charges.From $458, select.
Ontario.$475 per passenger.Departing Wed, 18 Jun, returning Sat, 21 Jun.Return flight with United.Outbound indirect flight with United, departs from New York Newark on Wed, 18 Jun, arriving in Ontario International.Inbound indirect flight with United, departs from Ontario International on Sat, 21 Jun, arriving in New York Newark.Price includes taxes and charges.From $475, select.
Ontario.$478 per passenger.Departing Wed, 4 Feb, returning Wed, 11 Feb.Return flight with Hawaiian Airlines.Outbound indirect flight with Hawaiian Airlines, departs from New York Newark on Wed, 4 Feb, arriving in Ontario International.Inbound indirect flight with Hawaiian Airlines, departs from Ontario International on Wed, 11 Feb, arriving in New York Newark.Price includes taxes and charges.From $478, select.

The cheapest month to fly from New York Newark Airport to Ontario International Airport

We’re always keeping an eye on fares, to help you find the lowest one in seconds. Check out the New York Newark Airport to Ontario International Airport flight prices forecast over the next 12 months.
May
from $1,142
Jun
from $475
Jul
from $444
Aug
from $428
Sep
from $417
Oct
from $443
Nov
from $747
Dec
from $1,234
Jan
from $751
Feb
from $478
Mar
from $884
Apr
Find prices
Cheapest month:September
Most expensive month:December

New York Newark to Ontario International: Alternative routes

Compare routes from New York Newark to Ontario below. You may find an airport to fly into that's cheaper, faster, or easier than Ontario International.

New York to Ontario: Flight information

The things to know before you go.
Cheapest flight found$417
Cheapest month to flySeptember

Finding cheap flights from New York Newark to Ontario International: Frequently asked questions

The best price we found for a return flight from New York Newark to Ontario International is $417. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
Currently, there are no airlines that fly direct from New York Newark to Ontario International. But we found flights with one or more stops from $417.
As of May 2025, there are no flights flying from New York Newark to Ontario International.
The cheapest month to fly from New York Newark to Ontario International is usually May 2025.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from New York Newark Airport to Ontario International Airport on Tuesday, 16 September 2025.
No airlines currently offer direct flights between New York Newark Airport and Ontario International Airport. Most routes have one or more stops.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Ontario International but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Ontario is around 40 days in advance, so don’t leave your flight to the last minute.
Currently, Hawaiian Airlines offers the cheapest flight tickets to Ontario International.

Travelling from Newark Liberty International Airport (EWR) to Ontario International Airport (ONT): what you need to know

  • Ontario is three hours behind New York and is in the UTC-7 timezone.

  • Leave enough time to make your EWR to ONT flight. Generally, it's best to arrive two hours before international departures and an hour ahead for domestic flights.

  • During popular months like April, it's best to get to the airport earlier than usual. Plan to arrive two hours before domestic departures and four hours ahead of an international flight whenever you're travelling during a high season in general.

  • Think about adding a stopover when booking your ticket from Newark Liberty International Airport to Ontario International Airport. Just deselect 'Direct flights only' to break up your journey, or perhaps see a new city along the way. Here are some options between EWR and ONT:

    • Nashville International Airport

    • Denver International Airport

    • Phoenix Sky Harbour International Airport

How to find the cheapest flights from Newark Liberty International Airport (EWR) to Ontario International Airport (ONT)

  • Currently, $183 is the cheapest price we've seen for a one-way Newark Liberty International Airport to Ontario International Airport flight. The best price for a return ticket is $417. Keep in mind that fares may change due to demand at the time of booking.

  • It's usually smart to book in advance if you want to get cheap tickets from EWR to ONT. That's because flight prices are based on demand, which tends to rise closer to departure.

  • Finding cheap flights from Newark Liberty International Airport to Ontario International Airport is easier if you're flexible with your travel dates. Use the 'Whole month' search tool to see the lowest fares throughout the month and land a great deal.

  • Getting your hands on cheap flights from EWR to ONT is a cinch with Price Alerts. Simply set up one of these automatic alerts and we'll get in touch when a lower fare pops up.

  • Secure the perfect flight for you by using the filters. To see the 'Best,' 'Cheapest' or 'Fastest' flights from Newark Liberty International Airport to Ontario International Airport, use the 'Sort by' tool. You can also filter by arrival and departure times, airline, and journey duration.

Handy information about Newark Liberty International Airport (EWR)

  • EWR is located at Building 1, Conrad Road.

  • Of the flights that depart from Newark Liberty International Airport, 73.3% arrive as scheduled at their destination.

  • Newark Liberty International Airport is about 24 kilometres from central New York. If you're ride-sharing, catching a cab or driving from the centre, it'll take 30 minutes or so to arrive, depending on the traffic.

  • Catching public transport? Expect a trip time of around 1 hour 10 minutes.

  • Get your travels off to a leisurely start by staying near EWR. Whether you're catching an early flight from Newark Liberty International Airport to Ontario International Airport or just don't want to be rushed, these hotels are ideal:

Arriving at Ontario International Airport (ONT)

Getting from Ontario International Airport (ONT) to central Ontario

  • You'll find ONT at 2900 E. Airport Drive.

  • Ontario International Airport is roughly 6 kilometres from central Ontario. The drive time takes around 10 minutes.

  • It'll take around 1 hour 30 minutes if you're travelling on public transport.

When to fly to Ontario International Airport (ONT)

  • August is the busiest month for flights from Newark Liberty International Airport to Ontario International Airport. To avoid the crowds, head to Ontario in May.

  • When reserving your flight from Newark Liberty International Airport to Ontario International Airport, think about the type of weather you enjoy. August is the warmest month in Ontario, with temperatures ranging from 15ºC (59ºF) to 35ºC (95ºF).

  • Search for cheap tickets from EWR to ONT in January if you'd rather travel during cooler conditions. Temperatures are at their lowest around then, ranging between 4ºC (39ºF) and 23ºC (73ºF) on average.

Explore more of United States

  • You've visited Ontario, now it's time to explore more of United States. Travel around 56 kilometres west to Los Angeles to tick off its top sights. From Griffith Observatory to The Broad and La Brea Tar Pits & Museum, your itinerary will be busy.

  • If you're interested in discovering another major stop in United States, head for San Diego, roughly 153 kilometres south of Ontario. San Diego Zoo, USS Midway Museum and SeaWorld San Diego are key highlights.

Plan the rest of your trip from New York to Ontario

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.