Cheap Flights from New York Newark to Ontario International

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 Airport to Ontario International Airport? If you want to travel next month, return fares start from R 5,403. Find the lowest prices on one-way and return tickets right here.

Ontario.R 2,466 per passenger.Departing Tue, 6 Oct.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from New York Newark on Tue, 6 Oct, arriving in Ontario International.Price includes taxes and charges.From R 2,466, select.

Ontario.R 2,669 per passenger.Departing Thu, 10 Sep.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from New York Newark on Thu, 10 Sep, arriving in Ontario International.Price includes taxes and charges.From R 2,669, select.

Ontario.R 2,784 per passenger.Departing Thu, 27 Aug.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from New York Newark on Thu, 27 Aug, arriving in Ontario International.Price includes taxes and charges.From R 2,784, select.

Ontario.R 3,040 per passenger.Departing Sat, 5 Jun.One-way flight with Alaska Airlines.Outbound indirect flight with Alaska Airlines, departs from New York Newark on Sat, 5 Jun, arriving in Ontario International.Price includes taxes and charges.From R 3,040, select.

Ontario.R 3,055 per passenger.Departing Wed, 12 May.One-way flight with KLM.Outbound indirect flight with KLM, departs from New York Newark on Wed, 12 May, arriving in Ontario International.Price includes taxes and charges.From R 3,055, select.

Ontario.R 3,078 per passenger.Departing Wed, 9 Dec.One-way flight with KLM.Outbound indirect flight with KLM, departs from New York Newark on Wed, 9 Dec, arriving in Ontario International.Price includes taxes and charges.From R 3,078, select.

Ontario.R 3,141 per passenger.Departing Tue, 19 Jan.One-way flight with KLM.Outbound indirect flight with KLM, departs from New York Newark on Tue, 19 Jan, arriving in Ontario International.Price includes taxes and charges.From R 3,141, select.

Ontario.R 3,175 per passenger.Departing Wed, 14 Apr.One-way flight with KLM.Outbound indirect flight with KLM, departs from New York Newark on Wed, 14 Apr, arriving in Ontario International.Price includes taxes and charges.From R 3,175, select.

Ontario.R 3,181 per passenger.Departing Thu, 12 Nov.One-way flight with Delta.Outbound indirect flight with Delta, departs from New York Newark on Thu, 12 Nov, arriving in Ontario International.Price includes taxes and charges.From R 3,181, select.

Ontario.R 3,273 per passenger.Departing Tue, 2 Feb.One-way flight with Alaska Airlines.Outbound indirect flight with Alaska Airlines, departs from New York Newark on Tue, 2 Feb, arriving in Ontario International.Price includes taxes and charges.From R 3,273, select.

Ontario.R 3,273 per passenger.Departing Wed, 10 Mar.One-way flight with Alaska Airlines.Outbound indirect flight with Alaska Airlines, departs from New York Newark on Wed, 10 Mar, arriving in Ontario International.Price includes taxes and charges.From R 3,273, select.

Ontario.R 4,648 per passenger.Departing Wed, 29 Jul.One-way flight with Alaska Airlines.Outbound indirect flight with Alaska Airlines, departs from New York Newark on Wed, 29 Jul, arriving in Ontario International.Price includes taxes and charges.From R 4,648, select.

Find the cheapest month to fly from New York Newark to Ontario International

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like New York Newark to Ontario International flights are currently cheapest in October.

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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	R 2,466
Cheapest month to fly	October

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

How much are return flights from New York Newark to Ontario International?

The best price we found for a return flight from New York Newark to Ontario International is R 5,166. 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.

Which airlines fly direct from New York Newark to Ontario International?

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 R 5,166.

How many flights are there a week from New York Newark to Ontario International?

As of July 2026, there are no flights flying from New York Newark to Ontario International.

When is the cheapest time to fly from New York Newark to Ontario International?

The cheapest month to fly from New York Newark to Ontario International is usually September.

Which upcoming date is cheapest to fly from New York Newark Airport to Ontario International Airport on?

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 Saturday, 5 September 2026.

Can I get a direct flight from New York Newark Airport to Ontario International Airport?

No airlines currently offer direct flights between New York Newark Airport and Ontario International Airport. Most routes have one or more stops.

How can I find the best flight deal to Ontario International?

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.

When is the best time to book flights to Ontario?

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.

Which is the cheapest airline to fly from New York Newark Airport to Ontario International with?

Currently, Frontier Airlines offers the cheapest flight tickets to Ontario International.

Flying from New York Newark Airport (EWR) to Ontario International Airport (ONT): what you need to know

The timezone in Ontario is UTC-8, which is three hours behind New York.
To ensure you catch your EWR to ONT flight, leave enough time to check in and drop off your luggage. Turning up two hours ahead of international departures and an hour before domestic flights is the general travel rule.
Be prepared for longer lines during popular months such as December. Arriving up to four hours ahead of international flights and two hours for a domestic departure will give you ample time for security and boarding.
Consider adding a stopover when booking your ticket from New York Newark Airport to Ontario International Airport. Just deselect 'Direct flights only' to break up your trip, or even explore someplace new along the way. Here are some options between EWR and ONT:
- Denver International Airport
- Phoenix Sky Harbour Airport
- Nashville Airport

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

R 2,466 is the lowest price for a one-way New York Newark Airport to Ontario International Airport flight. A return flight starts at R 5,166. These prices may change depending on demand and availability.
It's often best to book ahead of time if you want to find cheap tickets from EWR to ONT. That's because flight prices are based on demand, which tends to increase closer to the date of departure.
If you're willing to be flexible with your trip dates, use the 'Whole month' search function. It'll show you the cheapest price across the month when looking for a flight from New York Newark Airport to Ontario International Airport.
Cut down on the time spent looking for cheap flights from EWR to ONT by setting up a Price Alert. You'll get an email or push notification on the app when a special offer becomes available.
Lock in the perfect flight for you with the help of the filters. To see the 'Cheapest,' 'Fastest' or 'Best' flights from New York Newark Airport to Ontario International Airport, use the 'Sort by' tool. You can also filter by airline, departure and arrival times, and journey duration.

Handy information about New York Newark Airport (EWR)

You'll find EWR at Building 1, Conrad Road.
When it comes to the on-time performance of New York Newark Airport, 71% of flights arrive within the expected timeframe.
To get to New York Newark Airport from central New York, it'll take about 35 minutes if you're going by car. This depends on traffic, however. It's approximately 14 kilometres from the airport to the city centre.
Expect a trip time of about 1 hour on public transport.
Searching for a handy hotel near EWR? If you're catching an early flight from New York Newark Airport to Ontario International Airport, these stays will have you sleeping moments from check-in:

Arriving at Ontario International Airport (ONT)

The last thing you want is a lengthy journey to your hotel if you're getting in late on a New York Newark Airport to Ontario International Airport flight. Book one of these accommodation options near ONT instead:
Follow your own route with a Ontario International Airport rental car. Pick up your wheels from Dollar, Fox - Rent A Car or Thrifty and find adventure across Ontario and beyond.
Reserving your vehicle from Ontario International Airport around three weeks ahead gives you the best shot at securing a great deal.

When to fly to Ontario International Airport (ONT)

The quietest month for a flight from New York Newark Airport to Ontario International Airport is March, while July is the busiest. Choose the best time to go to Ontario based on whether you prefer a laid-back vibe or a more bustling atmosphere.
Lock in your flight from New York Newark Airport to Ontario International Airport for August if you'd like to visit Ontario during its warmest month. You can expect temperatures of between 16ºC (61ºF) and 36ºC (97ºF).
If you want cooler conditions, search for a cheap ticket from EWR to ONT in February. Average temperatures are between 4ºC (39ºF) and 24ºC (75ºF) then.

Explore more of the United States

Los Angeles is just one of the many places in the United States waiting to be discovered once you've taken in the sights of Ontario. Around 56 kilometres away to the west, well-known attractions include Hollywood Sign, Universal Studios Hollywood and Hollywood Bowl.
San Diego is another must-experience destination in the United States and is around 153 kilometres south of Ontario. No trip is complete without visiting San Diego Zoo, San Diego Balboa Park and USS Midway Museum.