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

Hawaiian Airlines, American Airlines, and Alaska Airlines are the most popular carriers operating from Newark to Ontario

How many flights depart from Newark Airport to Ontario on average per week?

As of July 2025, 6 flights take off from Newark Airport and land in Ontario each week. The most common flight departure day for this route is Mon, with 17% of weekly flights taking off on this day.

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 51% 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 July 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.

$111 Cheap Flights from Newark Airport to Ontario in 2025

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Find the cheapest flights from Newark Airport to Los Angeles

Round-trip

One-way

Last minute

Cheap round-trip flights

7:20 am - 9:52 pmEWR-ONT

17h 32m1 stop

5:13 pm - 5:50 amONT-EWR

9h 37m1 stop

$260

Find Deal

Sat, Aug 9 - Sat, Aug 16

5:29 am - 10:01 amEWR-ONT

7h 32m1 stop

7:05 pm - 5:35 amONT-EWR

7h 30m1 stop

$267American Airlines

Find Deal

Thu, Jul 31 - Mon, Aug 4

5:48 pm - 11:53 pmEWR-ONT

9h 05m1 stop

3:06 pm - 6:01 amONT-EWR

11h 55m1 stop

$269Alaska Airlines

Find Deal

Sun, Aug 31 - Sat, Sep 6

5:48 pm - 11:53 pmEWR-ONT

9h 05m1 stop

7:10 am - 6:59 pmONT-EWR

8h 49m1 stop

$274Hawaiian Airlines

Find Deal

Sun, Aug 31 - Sat, Sep 6

6:00 am - 10:35 amEWR-ONT

7h 35m1 stop

7:05 am - 6:00 pmONT-EWR

7h 55m1 stop

$277Delta

Find Deal

Thu, Aug 28 - Wed, Sep 3

3:29 pm - 10:27 pmEWR-ONT

9h 58m1 stop

10:05 pm - 9:54 amONT-EWR

8h 49m1 stop

$281Delta

Find Deal

Wed, Aug 6 - Fri, Aug 8

5:45 pm - 11:51 pmEWR-ONT

9h 06m1 stop

7:10 am - 6:54 pmONT-EWR

8h 44m1 stop

$282Alaska Airlines

Find Deal

Wed, Oct 15 - Sat, Oct 18

7:19 am - 2:12 pmEWR-ONT

9h 53m1 stop

7:10 am - 6:59 pmONT-EWR

8h 49m1 stop

$286Hawaiian Airlines

Find Deal

Tue, Sep 16 - Tue, Sep 23

7:00 am - 12:13 pmEWR-ONT

8h 13m1 stop

8:16 pm - 8:01 amONT-EWR

8h 45m1 stop

$309United Airlines

Find Deal

Thu, Oct 9 - Sun, Oct 12

4:58 pm - 10:06 pmEWR-ONT

8h 08m1 stop

6:00 am - 5:01 pmONT-EWR

8h 01m1 stop

$338United Airlines

Find Deal

Sat, Jul 26 - Wed, Jul 30

United Airlines flights from Newark Airport to Ontario

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

United Airlines

Oct 9

EWR7:00 amNewark

8h 13m

1 stop

ONT12:13 pmOntario

Oct 12

ONT8:16 pmOntario

8h 45m

1 stop

EWR8:01 amNewark

$309

Find similar

United Airlines

Jul 26

EWR4:58 pmNewark

8h 08m

1 stop

ONT10:06 pmOntario

Jul 30

ONT6:00 amOntario

8h 01m

1 stop

EWR5:01 pmNewark

$338

Find similar

United Airlines

Aug 18

EWR4:00 pmNewark

9h 52m

1 stop

ONT10:52 pmOntario

Aug 25

ONT6:04 amOntario

10h 26m

1 stop

EWR7:30 pmNewark

$347

Find similar

Delta flights from Newark Airport to Ontario

Our best Delta deals on Newark Airport to Ontario flight tickets

Delta

Aug 28

EWR6:00 amNewark

7h 35m

1 stop

ONT10:35 amOntario

Sep 3

ONT7:05 amOntario

7h 55m

1 stop

EWR6:00 pmNewark

$277

Find similar

Delta

Aug 6

EWR3:29 pmNewark

9h 58m

1 stop

ONT10:27 pmOntario

Aug 8

ONT10:05 pmOntario

8h 49m

1 stop

EWR9:54 amNewark

$281

Find similar

Delta

Oct 4

EWR4:59 pmNewark

8h 44m

1 stop

ONT10:43 pmOntario

Oct 6

ONT10:59 pmOntario

7h 37m

1 stop

EWR9:36 amNewark

$292

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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

Other information

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 $347. If you aren’t able to travel during the month of September, then book flights to Ontario from Newark Airport during March instead. Flights to Ontario in March, while not as cheap as those in September, still average around $365.

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 Saturday when prices can be found for as low as $326. This is often the case because there is less demand to fly during this day of the week. When flying out on a Tuesday, the most expensive travel day of the week, you can expect to see flight prices from Newark Airport to Ontario for around $377.

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 $431 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 $332 on momondo.

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

As of July 2025, prices for Newark Airport to Ontario flights are approximately 27% cheaper 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

Best Price Found	$111
Fastest flight time	7h 17m
Direct flights	Mon and Fri
Airports in Ontario	1 airport

The best one-way flight to Ontario from Newark Airport in the past 72 hours is $111. The best round-trip flight deal from Newark Airport to Ontario found on momondo in the last 72 hours is $260.

The fastest flight from Newark Airport to Ontario takes 7h 17m

Direct flights go from Newark Airport to Ontario on Monday and Friday. The only airline offering direct flights is United Airlines.

There is 1 airport near Ontario: Ontario (ONT)

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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 17m.
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 July 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 57% of the total bookings. Other popular airlines include Delta with 20%, United Airlines with 17%, and Spirit Airlines with 5%.

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 $143	Free Cancellation	Rating 6.3 8,055 reviews	Search Spirit Airlines flights
American Airlines	PriceFrom $276	Free Cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights
Delta	PriceFrom $278	Free Cancellation	Rating 8.0 7,950 reviews	Search Delta flights
United Airlines	PriceFrom $280	Free Cancellation	Rating 7.4 8,849 reviews	Search United Airlines flights

United Airlines Flights From Newark Airport to Ontario
United Airlines operates around 6 flights from Newark Airport to Ontario every week. The average price of these flights found in the last 72 hours has been $470, but momondo users have found United Airlines deals from Newark Airport to Ontario from as low as $280 round-trip. United Airlines has been scored 7.4/10 in 8,848 reviews.

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.