What is the cheapest airline that flies from Newark to Ontario?

Frontier, American Airlines, and United Airlines are the most popular carriers operating from Newark to Ontario

Which airline has the best punctuality record on Newark to Ontario flights?

According to our data, Allegiant Air have had the least number of delays on this route over the last 12 months; with no flights being classified as delayed.

Which layover airport has the shortest connection time from Newark Airport to Ontario?

Phoenix (PHX) has the shortest average layover time for this route: 1h 24m.

Which airport is the most popular layover for flights between Newark Airport and Ontario?

Phoenix (PHX) was the most common stop: 75% of momondo users choosing 1-stop flights on this route connected there.

Which layover airport offers the lowest fares from Newark Airport to Ontario?

Flights via Dallas (DFW) offer the lowest average round-trip price of $266.

How often are flights from Newark to Ontario delayed?

Historically, on average around 21% of flights between Newark and Ontario have experienced a delay on any given week. The average delay length over the past 12 months has been 128 minutes.

Which layover airport has the shortest travel time from Newark Airport to Ontario?

Flights connecting via Dallas (DFW) have the shortest average one-way travel time: 7h 29m.

What airlines fly to Ontario?

United Airlines, Spirit Airlines and Alaska Airlines are the top three most popular airlines that fly to Ontario from Newark Airport according to our data. United Airlines is the first choice among our users, with 54% of people opting to fly with this airline when traveling to Ontario. Keep in mind that there are 8 different airlines that fly to Ontario on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from Newark Airport to Ontario Airport?

Prices for flights from Newark Airport to Ontario Airport were last updated today.

How many operators does momondo search for flights from Newark Airport to Ontario Airport?

There are 3 operators available for flights from Newark Airport to Ontario Airport as of October 2025.

How old do you have to be to fly from Newark Airport to Ontario Airport?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Newark Airport to Ontario Airport.

What documentation or ID do you need to fly to Ontario Airport?

The required travel and health documents for your Ontario Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Ontario Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$72 Cheap Flights from Newark Airport to Ontario in 2025/26

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5:58 pm - 12:37 pmEWR-ONT

21h 39m1 stop

1:46 pm - 12:24 pmONT-EWR

19h 38m2 stops

$207Multiple Airlines

Find Deal

Fri, Nov 7 - Mon, Nov 10

6:59 am - 8:42 pmEWR-ONT

16h 43m1 stop

6:53 am - 1:06 amONT-EWR

15h 13m2 stops

$208Multiple Airlines

Find Deal

Tue, Oct 28 - Thu, Oct 30

5:59 pm - 7:17 amEWR-ONT

16h 18m1 stop

6:00 am - 5:04 pmONT-EWR

8h 04m1 stop

$210Multiple Airlines

Find Deal

Sun, Nov 9 - Thu, Nov 13

10:29 am - 3:24 pmEWR-ONT

7h 55m1 stop

1:00 pm - 11:06 pmONT-EWR

7h 06m1 stop

$260American Airlines

Find Deal

Tue, Oct 28 - Fri, Oct 31

7:55 am - 12:33 pmEWR-ONT

7h 38m1 stop

1:45 pm - 1:04 amONT-EWR

8h 19m1 stop

$263United Airlines

Find Deal

Fri, Oct 31 - Wed, Nov 5

7:15 am - 12:01 pmEWR-ONT

7h 46m1 stop

10:09 am - 10:59 pmONT-EWR

9h 50m2 stops

$265American Airlines

Find Deal

Tue, Oct 28 - Fri, Oct 31

5:25 pm - 10:52 pmEWR-ONT

8h 27m1 stop

10:30 pm - 11:05 amONT-EWR

9h 35m1 stop

$267Delta

Find Deal

Sat, Jan 17 - Mon, Jan 26

6:53 pm - 11:58 pmEWR-ONT

8h 05m1 stop

12:12 pm - 11:08 pmONT-EWR

7h 56m1 stop

$277Delta

Find Deal

Thu, Dec 4 - Tue, Dec 9

4:25 pm - 11:32 pmEWR-ONT

10h 07m1 stop

6:00 am - 6:29 pmONT-EWR

9h 29m1 stop

$281Alaska Airlines

Find Deal

Fri, Nov 14 - Wed, Nov 19

7:30 am - 3:17 pmEWR-ONT

10h 47m1 stop

6:00 am - 6:29 pmONT-EWR

9h 29m1 stop

$295Alaska Airlines

Find Deal

Wed, Oct 29 - Wed, Nov 5

American Airlines flights from Newark Airport to Ontario

Our best American Airlines deals on Newark Airport to Ontario flight tickets

American Airlines

Oct 28

EWR10:29 amNewark

7h 55m

1 stop

ONT3:24 pmOntario

Oct 31

ONT1:00 pmOntario

7h 06m

1 stop

EWR11:06 pmNewark

$260

Find similar

American Airlines

Oct 28

EWR7:15 amNewark

7h 46m

1 stop

ONT12:01 pmOntario

Oct 31

ONT10:09 amOntario

9h 50m

2 stops

EWR10:59 pmNewark

$265

Find similar

American Airlines

Oct 28

EWR9:30 amNewark

12h 05m

2 stops

ONT6:35 pmOntario

Oct 31

ONT10:09 amOntario

9h 50m

2 stops

EWR10:59 pmNewark

$270

Find similar

United Airlines flights from Newark Airport to Ontario

Our best United Airlines deals on Newark Airport to Ontario flight tickets

United Airlines

Oct 31

EWR7:55 amNewark

7h 38m

1 stop

ONT12:33 pmOntario

Nov 5

ONT1:45 pmOntario

8h 19m

1 stop

EWR1:04 amNewark

$263

Find similar

United Airlines

Oct 24

EWR5:10 pmNewark

8h 42m

1 stop

ONT10:52 pmOntario

Oct 31

ONT6:05 amOntario

10h 05m

1 stop

EWR7:10 pmNewark

$413

Find similar

United Airlines

Oct 23

EWR7:50 amNewark

8h 01m

1 stop

ONT12:51 pmOntario

Oct 23

ONT6:27 pmOntario

8h 13m

1 stop

EWR5:40 amNewark

$477

Find similar

Fly from

Fly to

Route

Depart

Return

Price

NewarkOntario

EWR - ONT

EWRONT

Newark

Fri 11/7

5:58 pm-12:37 pm

1 stop21h 39m

Ontario

Mon 11/10

1:46 pm-12:24 pm

2 stops19h 38m

$207

NewarkOntario

EWR - ONT

EWRONT

Newark

Tue 10/28

6:59 am-8:42 pm

1 stop16h 43m

Ontario

Thu 10/30

6:53 am-1:06 am

2 stops15h 13m

$208

NewarkOntario

EWR - ONT

EWRONT

Newark

Sun 11/9

5:59 pm-7:17 am

1 stop16h 18m

Ontario

Thu 11/13

6:00 am-5:04 pm

1 stop8h 04m

$210

NewarkOntario

EWR - ONT

EWRONT

Newark

Tue 10/28

10:29 am-3:24 pm

1 stop7h 55m

Ontario

Fri 10/31

1:00 pm-11:06 pm

1 stop7h 06m

$260

NewarkOntario

EWR - ONT

EWRONT

Newark

Fri 10/31

7:55 am-12:33 pm

1 stop7h 38m

Ontario

Wed 11/5

1:45 pm-1:04 am

1 stop8h 19m

$263

NewarkOntario

EWR - ONT

EWRONT

Newark

Tue 10/28

7:15 am-12:01 pm

1 stop7h 46m

Ontario

Fri 10/31

10:09 am-10:59 pm

2 stops9h 50m

$265

NewarkOntario

EWR - ONT

EWRONT

Newark

Sat 1/17

5:25 pm-10:52 pm

1 stop8h 27m

Ontario

Mon 1/26

10:30 pm-11:05 am

1 stop9h 35m

$267

NewarkOntario

EWR - ONT

EWRONT

Newark

Thu 12/4

6:53 pm-11:58 pm

1 stop8h 05m

Ontario

Tue 12/9

12:12 pm-11:08 pm

1 stop7h 56m

$277

NewarkOntario

EWR - ONT

EWRONT

Newark

Fri 11/14

4:25 pm-11:32 pm

1 stop10h 07m

Ontario

Wed 11/19

6:00 am-6:29 pm

1 stop9h 29m

$281

NewarkOntario

EWR - ONT

EWRONT

Newark

Wed 10/29

7:30 am-3:17 pm

1 stop10h 47m

Ontario

Wed 11/5

6:00 am-6:29 pm

1 stop9h 29m

$295

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How to get the cheapest flight ticket from Newark Airport to Ontario

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Delays

Layovers

What is the cheapest month to fly to Ontario?

In general, September is the cheapest month to fly from Newark Airport to Ontario. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $296. If you aren’t able to travel during the month of September, then book flights to Ontario from Newark Airport during August instead. Flights to Ontario in August, while not as cheap as those in September, still average around $321.

What is the cheapest day to depart on your flight to Ontario?

The cheapest day to depart on your flight to Ontario is on a Friday when prices can be found for as low as $304. This is often the case because there is less demand to fly during this day of the week. When flying out on a Monday, the most expensive travel day of the week, you can expect to see flight prices from Newark Airport to Ontario for around $387.

What is the cheapest time of day to depart on your flight to Ontario?

At noon is the cheapest time of day to fly from Newark Airport to Ontario when you can find flight prices for as low as $334. Flying to Ontario at noon is an ideal time because this is during off-peak travel hours. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are $362 on average. Flights to Ontario from Newark Airport in the morning are generally more expensive because this time of day is more convenient for travelers’ schedules.

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

You are more likely to see cheaper flights to Ontario from Newark Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Ontario for around $407 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Ontario from Newark Airport for as low as $335 on momondo.

How have Newark Airport to Ontario flight prices changed over time?

As of October 2025, prices for Newark Airport to Ontario flights are approximately 5% more expensive when compared to flights at the same time last year.

When to book flights from Newark Airport to Ontario

Are you open to changing your travel dates? Check out the ideal times to fly from Newark Airport to Ontario according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Newark Airport to Ontario (EWR to ONT) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Newark Airport to Ontario

Direct flights	None

There are no direct flights from Newark Airport to Ontario. There are no popular flight routes from Newark Airport to Ontario.

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How far is Newark to Ontario by plane?
The distance between Newark and Ontario is about 2403.8 mi. A reasonable flight in good conditions will take 7h 38m.
When did momondo last update prices for flights from Newark Airport to Ontario Airport?
Prices for flights from Newark Airport to Ontario Airport were last updated today.
How many operators does momondo search for flights from Newark Airport to Ontario Airport?
There are 3 operators available for flights from Newark Airport to Ontario Airport as of October 2025.
How old do you have to be to fly from Newark Airport to Ontario Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Newark Airport to Ontario Airport.
What documentation or ID do you need to fly to Ontario Airport?
The required travel and health documents for your Ontario Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Ontario Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular airline from Newark Airport to Ontario?
Based on momondo bookings for flights between Newark Airport and Ontario, the leading airline is American Airlines, making up 58% of the total bookings. Other popular airlines include United Airlines with 22% and Delta with 20%.

Best airlines flying from Newark Airport to Ontario

Compare and see reviews for airlines that fly from Newark Airport to Ontario with momondo

Airline	Rating	Free Cancellation	Price
United Airlines	PriceFrom $267	Free Cancellation	Rating 7.4 8,982 reviews	Search United Airlines flights
American Airlines	PriceFrom $273	Free Cancellation	Rating 7.2 11,043 reviews	Search American Airlines flights
Delta	PriceFrom $276	Free Cancellation	Rating 7.9 7,984 reviews	Search Delta flights

Why use momondo?

Why should I use momondo to find a flight deal from New York to Ontario?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Ontario from New York.

Can I find flights from New York to Ontario with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Ontario from New York with this policy.

How can momondo help me find flights from New York to Ontario?

Once you have performed a search for New York to Ontario flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from New York to Ontario right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Ontario from New York. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

An easier way to manage your Ontario trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

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Cheap flights from Newark Airport to Los Angeles from $72

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Newark Airport to Los Angeles departing on 10/28. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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American Airlines flights from Newark Airport to Ontario

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How to get the cheapest flight ticket from Newark Airport to Ontario

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Ontario?

What is the cheapest day to depart on your flight to Ontario?

What is the cheapest time of day to depart on your flight to Ontario?

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

How have Newark Airport to Ontario flight prices changed over time?

As of October 2025, prices for Newark Airport to Ontario flights are approximately 5% more expensive when compared to flights at the same time last year.

What is the cheapest airline that flies from Newark to Ontario?

Frontier, American Airlines, and United Airlines are the most popular carriers operating from Newark to Ontario

What airlines fly to Ontario?

How often are flights from Newark to Ontario delayed?

Historically, on average around 21% of flights between Newark and Ontario have experienced a delay on any given week. The average delay length over the past 12 months has been 128 minutes.

Which airline has the best punctuality record on Newark to Ontario flights?

According to our data, Allegiant Air have had the least number of delays on this route over the last 12 months; with no flights being classified as delayed.

Which airport is the most popular layover for flights between Newark Airport and Ontario?

Phoenix (PHX) was the most common stop: 75% of momondo users choosing 1-stop flights on this route connected there.

Which layover airport offers the lowest fares from Newark Airport to Ontario?

Flights via Dallas (DFW) offer the lowest average round-trip price of $266.

Which layover airport has the shortest travel time from Newark Airport to Ontario?

Flights connecting via Dallas (DFW) have the shortest average one-way travel time: 7h 29m.

Which layover airport has the shortest connection time from Newark Airport to Ontario?

Phoenix (PHX) has the shortest average layover time for this route: 1h 24m.

When to book flights from Newark Airport to Ontario

Cheap Newark Airport to Ontario (EWR to ONT) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Newark Airport to Ontario

Direct flights

How far is Newark to Ontario by plane?

When did momondo last update prices for flights from Newark Airport to Ontario Airport?

How many operators does momondo search for flights from Newark Airport to Ontario Airport?

How old do you have to be to fly from Newark Airport to Ontario Airport?

What documentation or ID do you need to fly to Ontario Airport?

What is the most popular airline from Newark Airport to Ontario?

Best airlines flying from Newark Airport to Ontario

Compare and see reviews for airlines that fly from Newark Airport to Ontario with momondo

Why use momondo?

Why should I use momondo to find a flight deal from New York to Ontario?

Can I find flights from New York to Ontario with flexible booking policies on momondo?

How can momondo help me find flights from New York to Ontario?

I’m not ready to book a flight from New York to Ontario right now. Can momondo alert me if prices change?

An easier way to manage your Ontario trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to the United States

Airports servicing California