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

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

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

Phoenix (PHX) was the most common stop: 77% of momondo users choosing 1-stop flights on this route connected there.

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 travel time from Newark Airport to Ontario?

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

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 127 minutes.

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 connection time from Newark Airport to Ontario?

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

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 55% 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.

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

Wednesday 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.

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.

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 December 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.

$95 Cheap Flights from Newark Airport to Ontario in 2025/26

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5:40 pm - 1:39 pm

EWR

ONT

22h 59m2 stops

7:56 pm - 5:54 pm

ONT

EWR

18h 58m1 stop

$237Multiple Airlines

Thu, Jan 8 - Thu, Jan 15

4:15 pm - 1:39 pm

EWR

ONT

24h 24m1 stop

7:56 pm - 5:54 pm

ONT

EWR

18h 58m1 stop

$267Multiple Airlines

Thu, Jan 8 - Thu, Jan 15

10:20 am - 6:20 pm

EWR

ONT

11h 00m1 stop

9:59 am - 11:21 pm

ONT

EWR

10h 22m1 stop

$273American Airlines

Tue, Jan 13 - Tue, Jan 20

4:15 pm - 1:48 pm

EWR

ONT

24h 33m1 stop

3:07 pm - 6:47 am

ONT

EWR

12h 40m2 stops

$278Multiple Airlines

Sun, Jan 18 - Wed, Jan 21

5:00 am - 5:15 pm

EWR

ONT

39h 15m2 stops

8:31 am - 5:54 pm

ONT

EWR

30h 23m1 stop

$285Multiple Airlines

Sun, Jan 4 - Mon, Jan 12

4:15 pm - 6:01 pm

EWR

ONT

28h 46m1 stop

1:37 pm - 11:29 am

ONT

EWR

18h 52m2 stops

$290Multiple Airlines

Wed, Feb 11 - Sat, Feb 21

6:00 am - 12:20 am

EWR

ONT

21h 20m2 stops

8:48 pm - 1:08 am

ONT

EWR

25h 20m2 stops

$294Frontier

Fri, Jan 23 - Fri, Jan 30

5:55 am - 10:39 pm

EWR

ONT

19h 44m2 stops

6:56 pm - 5:54 pm

ONT

EWR

19h 58m1 stop

$295Multiple Airlines

Tue, Feb 10 - Fri, Feb 13

4:15 pm - 1:39 pm

EWR

ONT

24h 24m1 stop

6:49 pm - 10:30 am

ONT

EWR

12h 41m2 stops

$298Multiple Airlines

Sat, Jan 10 - Tue, Jan 13

6:30 am - 4:05 pm

EWR

ONT

12h 35m1 stop

6:22 am - 11:21 pm

ONT

EWR

13h 59m1 stop

$300American Airlines

Sat, Jan 10 - Tue, Jan 13

American Airlines flights from Newark Airport to Ontario

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

American Airlines

Jan 13

EWR10:20 amNewark

11h 00m

1 stop

ONT6:20 pmOntario

Jan 20

ONT9:59 amOntario

10h 22m

1 stop

EWR11:21 pmNewark

$273

Find similar

American Airlines

Jan 18

EWR4:59 pmNewark

19h 09m

1 stop

ONT9:08 amOntario

Jan 28

ONT4:45 pmOntario

10h 15m

1 stop

EWR6:00 amNewark

$300

Find similar

American Airlines

Jan 10

EWR6:30 amNewark

12h 35m

1 stop

ONT4:05 pmOntario

Jan 17

ONT12:57 pmOntario

7h 20m

1 stop

EWR11:17 pmNewark

$301

Find similar

United Airlines flights from Newark Airport to Ontario

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

United Airlines

Jan 17

EWR6:00 amNewark

9h 17m

1 stop

ONT12:17 pmOntario

Jan 21

ONT5:05 amOntario

9h 25m

1 stop

EWR5:30 pmNewark

$304

Find similar

United Airlines

Jan 14

EWR3:30 pmNewark

9h 28m

1 stop

ONT9:58 pmOntario

Jan 18

ONT5:05 amOntario

9h 25m

1 stop

EWR5:30 pmNewark

$318

Find similar

United Airlines

Jan 5

EWR4:49 pmNewark

8h 36m

1 stop

ONT10:25 pmOntario

Jan 8

ONT6:39 pmOntario

8h 20m

1 stop

EWR5:59 amNewark

$342

Find similar

Fly from

Fly to

Route

Depart

Return

Price

NewarkOntario

EWR - ONT

EWRONT

Newark

Thu 1/8

5:40 pm-1:39 pm

2 stops22h 59m

Ontario

Thu 1/15

7:56 pm-5:54 pm

1 stop18h 58m

$237

NewarkOntario

EWR - ONT

EWRONT

Newark

Thu 1/8

4:15 pm-1:39 pm

1 stop24h 24m

Ontario

Thu 1/15

7:56 pm-5:54 pm

1 stop18h 58m

$267

NewarkOntario

EWR - ONT

EWRONT

Newark

Tue 1/13

10:20 am-6:20 pm

1 stop11h 00m

Ontario

Tue 1/20

9:59 am-11:21 pm

1 stop10h 22m

$273

NewarkOntario

EWR - ONT

EWRONT

Newark

Sun 1/18

4:15 pm-1:48 pm

1 stop24h 33m

Ontario

Wed 1/21

3:07 pm-6:47 am

2 stops12h 40m

$278

NewarkOntario

EWR - ONT

EWRONT

Newark

Sun 1/4

5:00 am-5:15 pm

2 stops39h 15m

Ontario

Mon 1/12

8:31 am-5:54 pm

1 stop30h 23m

$285

NewarkOntario

EWR - ONT

EWRONT

Newark

Wed 2/11

4:15 pm-6:01 pm

1 stop28h 46m

Ontario

Sat 2/21

1:37 pm-11:29 am

2 stops18h 52m

$290

NewarkOntario

EWR - ONT

EWRONT

Newark

Fri 1/23

6:00 am-12:20 am

2 stops21h 20m

Ontario

Fri 1/30

8:48 pm-1:08 am

2 stops25h 20m

$294

NewarkOntario

EWR - ONT

EWRONT

Newark

Tue 2/10

5:55 am-10:39 pm

2 stops19h 44m

Ontario

Fri 2/13

6:56 pm-5:54 pm

1 stop19h 58m

$295

NewarkOntario

EWR - ONT

EWRONT

Newark

Sat 1/10

4:15 pm-1:39 pm

1 stop24h 24m

Ontario

Tue 1/13

6:49 pm-10:30 am

2 stops12h 41m

$298

NewarkOntario

EWR - ONT

EWRONT

Newark

Sat 1/10

6:30 am-4:05 pm

1 stop12h 35m

Ontario

Tue 1/13

6:22 am-11:21 pm

1 stop13h 59m

$300

Flights are sorted by cheapest round-trip flights first.

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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 $302. 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 $386 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 $324 on momondo.

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

As of December 2025, prices for Newark Airport to Ontario flights are approximately 24% 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 33m
Direct flights	None

The fastest flight from Newark Airport to Ontario takes 8h 33m

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 33m.
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 December 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 54% of the total bookings. Other popular airlines include United Airlines with 23%, 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 8,180 reviews	Search Spirit Airlines flights
American Airlines	PriceFrom $276	Free Cancellation	Rating 7.2 11,050 reviews	Search American Airlines flights
Delta	PriceFrom $276	Free Cancellation	Rating 7.9 8,007 reviews	Search Delta flights
United Airlines	PriceFrom $280	Free Cancellation	Rating 7.4 9,095 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 $95

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 2/11. 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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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 December 2025, prices for Newark Airport to Ontario flights are approximately 24% more expensive when compared to flights at the same time last year.

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

Alaska Airlines and Delta 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 127 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?

Wednesday 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: 77% 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