How often are flights from Newark to Ontario delayed?

Historically, on average around 17% 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 136 minutes.

What day of the week experiences the fewest flight delays on this route?

Tuesday is statistically the day of the week which experiences the fewest number of delays on this flight route. Saturday has historically seen more delays on average compared to the rest of the week.

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

According to our data, Alaska Airlines have had the least number of delays on this route over the last 12 months; with about 100% of their flights experiencing any sort of delay.

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.

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

Delta and Alaska Airlines are the most popular carriers operating from Newark to Ontario

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.

What is the most punctual flight time for Newark to Ontario flights?

Generally, flights departing in the early afternoon tend to experience fewer delays. Flights in the morning have, in the past, seen delays more frequently in comparison.

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 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.

What airlines fly to Ontario?

United Airlines, Spirit Airlines and JetBlue 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 56% 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 4 operators available for flights from Newark Airport to Ontario Airport as of January 2026.

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.

$88 Cheap Flights from Newark Airport to Ontario in 2026

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4:05 pm - 2:29 pm

EWR

ONT

25h 24m

1 stop

8:40 am - 11:29 pm

ONT

EWR

11h 49m

2 stops

$184Multiple Airlines

Wed, Feb 25 - Wed, Mar 4

3:59 pm - 7:26 am

EWR

ONT

18h 27m

1 stop

6:43 pm - 5:54 pm

ONT

EWR

20h 11m

2 stops

$203Multiple Airlines

Fri, Feb 20 - Mon, Feb 23

3:59 pm - 7:26 am

EWR

ONT

18h 27m

1 stop

8:35 am - 4:00 pm

ONT

EWR

28h 25m

2 stops

$218Multiple Airlines

Fri, Feb 20 - Tue, Feb 24

4:05 pm - 2:29 pm

EWR

ONT

25h 24m

1 stop

8:40 am - 11:29 pm

ONT

EWR

11h 49m

2 stops

$223Multiple Airlines

Wed, Feb 25 - Wed, Mar 4

3:59 pm - 7:26 am

EWR

ONT

18h 27m

1 stop

6:43 pm - 5:54 pm

ONT

EWR

20h 11m

2 stops

$237Multiple Airlines

Fri, Feb 20 - Mon, Feb 23

3:59 pm - 7:26 am

EWR

ONT

18h 27m

1 stop

2:06 pm - 5:54 pm

ONT

EWR

24h 48m

1 stop

$239Multiple Airlines

Fri, Feb 20 - Mon, Feb 23

4:05 pm - 2:29 pm

EWR

ONT

25h 24m

1 stop

6:15 am - 6:53 am

ONT

EWR

45h 38m

2 stops

$253Multiple Airlines

Sat, Feb 28 - Sun, Mar 8

4:15 pm - 4:26 pm

EWR

ONT

27h 11m

1 stop

8:10 am - 11:30 pm

ONT

EWR

12h 20m

2 stops

$261Multiple Airlines

Sat, Feb 7 - Wed, Feb 11

4:05 pm - 8:48 pm

EWR

ONT

31h 43m

1 stop

2:08 pm - 6:53 am

ONT

EWR

13h 45m

2 stops

$263Multiple Airlines

Thu, Feb 26 - Thu, Mar 5

5:59 am - 1:28 pm

EWR

ONT

10h 29m

2 stops

5:10 pm - 6:31 pm

ONT

EWR

22h 21m

1 stop

$270Multiple Airlines

Tue, Mar 10 - Wed, Mar 11

Delta flights from Newark Airport to Ontario

Our best Delta deals on Newark Airport to Ontario flight tickets

Delta

Feb 25

EWR7:00 amNewark

8h 07m

1 stop

ONT12:07 pmOntario

Feb 28

ONT6:00 amOntario

6h 54m

1 stop

EWR3:54 pmNewark

$317

Delta

Apr 14

EWR9:39 amNewark

11h 54m

2 stops

ONT6:33 pmOntario

Apr 25

ONT12:49 pmOntario

9h 02m

1 stop

EWR12:51 amNewark

$322

Delta

Mar 2

EWR3:00 pmNewark

11h 49m

2 stops

ONT11:49 pmOntario

Mar 7

ONT10:20 pmOntario

7h 12m

1 stop

EWR8:32 amNewark

$328

Alaska Airlines flights from Newark Airport to Ontario

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

Alaska Airlines

Mar 11

EWR5:30 pmNewark

9h 22m

1 stop

ONT11:52 pmOntario

Mar 17

ONT4:02 pmOntario

11h 57m

1 stop

EWR6:59 amNewark

$297

Alaska Airlines

Mar 3

EWR5:30 pmNewark

9h 22m

1 stop

ONT11:52 pmOntario

Mar 10

ONT7:00 amOntario

8h 59m

1 stop

EWR6:59 pmNewark

$307

Alaska Airlines

Mar 6

EWR5:30 pmNewark

9h 22m

1 stop

ONT11:52 pmOntario

Mar 10

ONT4:02 pmOntario

11h 57m

1 stop

EWR6:59 amNewark

$313

Fly from

Fly to

Route

Depart

Return

Price

NewarkOntario

EWR - ONT

EWRONT

Newark

Wed 2/25

4:05 pm-2:29 pm

1 stop25h 24m

Ontario

Wed 3/4

8:40 am-11:29 pm

2 stops11h 49m

$184

NewarkOntario

EWR - ONT

EWRONT

Newark

Fri 2/20

3:59 pm-7:26 am

1 stop18h 27m

Ontario

Mon 2/23

6:43 pm-5:54 pm

2 stops20h 11m

$203

NewarkOntario

EWR - ONT

EWRONT

Newark

Fri 2/20

3:59 pm-7:26 am

1 stop18h 27m

Ontario

Tue 2/24

8:35 am-4:00 pm

2 stops28h 25m

$218

NewarkOntario

EWR - ONT

EWRONT

Newark

Wed 2/25

4:05 pm-2:29 pm

1 stop25h 24m

Ontario

Wed 3/4

8:40 am-11:29 pm

2 stops11h 49m

$223

NewarkOntario

EWR - ONT

EWRONT

Newark

Fri 2/20

3:59 pm-7:26 am

1 stop18h 27m

Ontario

Mon 2/23

6:43 pm-5:54 pm

2 stops20h 11m

$237

NewarkOntario

EWR - ONT

EWRONT

Newark

Fri 2/20

3:59 pm-7:26 am

1 stop18h 27m

Ontario

Mon 2/23

2:06 pm-5:54 pm

1 stop24h 48m

$239

NewarkOntario

EWR - ONT

EWRONT

Newark

Sat 2/28

4:05 pm-2:29 pm

1 stop25h 24m

Ontario

Sun 3/8

6:15 am-6:53 am

2 stops45h 38m

$253

NewarkOntario

EWR - ONT

EWRONT

Newark

Sat 2/7

4:15 pm-4:26 pm

1 stop27h 11m

Ontario

Wed 2/11

8:10 am-11:30 pm

2 stops12h 20m

$261

NewarkOntario

EWR - ONT

EWRONT

Newark

Thu 2/26

4:05 pm-8:48 pm

1 stop31h 43m

Ontario

Thu 3/5

2:08 pm-6:53 am

2 stops13h 45m

$263

NewarkOntario

EWR - ONT

EWRONT

Newark

Tue 3/10

5:59 am-1:28 pm

2 stops10h 29m

Ontario

Wed 3/11

5:10 pm-6:31 pm

1 stop22h 21m

$270

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Showing 1-10 of 20 resultsSorted by cheapest first

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 $326.

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 $306. 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?

In the evening is the cheapest time of day to fly from Newark Airport to Ontario when you can find flight prices for as low as $336. Flying to Ontario in the evening 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 afternoon when prices are $337 on average. Flights to Ontario from Newark Airport in the afternoon 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 $388 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 January 2026, prices for Newark Airport to Ontario flights are approximately 1% 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

Fastest flight time	8h 18m
Direct flights	None

The fastest flight from Newark Airport to Ontario takes 8h 18m

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 8h 18m.
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 4 operators available for flights from Newark Airport to Ontario Airport as of January 2026.
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 51% of the total bookings. Other popular airlines include United Airlines with 24%, Delta with 21%, and Spirit Airlines with 3%.

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
Spirit Airlines	PriceFrom $116	Free Cancellation	Rating 6.3 8,385 reviews	Search Spirit Airlines flights
American Airlines	PriceFrom $276	Free Cancellation	Rating 7.2 11,199 reviews	Search American Airlines flights
Delta	PriceFrom $276	Free Cancellation	Rating 7.9 8,120 reviews	Search Delta flights
United Airlines	PriceFrom $282	Free Cancellation	Rating 7.4 9,206 reviews	Search United Airlines 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 $88

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 2/27. 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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Delta flights from Newark Airport to Ontario

Our best Delta deals on Newark Airport to Ontario flight tickets

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Use the filters below to find and compare flights from Newark Airport to Ontario that are best for you.

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

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 January 2026, prices for Newark Airport to Ontario flights are approximately 1% more expensive when compared to flights at the same time last year.

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

Delta and Alaska 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 17% 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 136 minutes.

What is the most punctual flight time for Newark to Ontario flights?

Generally, flights departing in the early afternoon tend to experience fewer delays. Flights in the morning have, in the past, seen delays more frequently in comparison.

What day of the week experiences the fewest flight delays on this route?

Tuesday is statistically the day of the week which experiences the fewest number of delays on this flight route. Saturday has historically seen more delays on average compared to the rest of the week.

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

According to our data, Alaska Airlines have had the least number of delays on this route over the last 12 months; with about 100% of their flights experiencing any sort of delay.

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

Fastest flight time

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