Which layover airport offers the lowest fares from New York LaGuardia Airport to Ontario?

Flights via Denver (DEN) offer the lowest average round-trip price of $324.

Which layover airport has the shortest travel time from New York LaGuardia Airport to Ontario?

Flights connecting via Atlanta (ATL) have the shortest average one-way travel time: 7h 38m.

What airlines fly to Ontario?

American Airlines, Southwest and Delta are the top three most popular airlines that fly to Ontario from New York LaGuardia Airport according to our data. American Airlines is the first choice among our users, with 39% of people opting to fly with this airline when traveling to Ontario. Keep in mind that there are 6 different airlines that fly to Ontario on a routine basis, so you have a few additional options to choose from.

Which airport is the most popular layover for flights between New York LaGuardia Airport and Ontario?

Atlanta (ATL) was the most common stop: 50% of momondo users choosing 1-stop flights on this route connected there.

What is the cheapest airline that flies from New York LaGuardia to Ontario?

United Airlines is the most popular carrier operating from New York LaGuardia to Ontario

Which layover airport has the shortest connection time from New York LaGuardia Airport to Ontario?

Atlanta (ATL) has the shortest average layover time for this route: 0h 47m.

When did momondo last update prices for flights from New York LaGuardia Airport to Ontario Airport?

Prices for flights from New York LaGuardia Airport to Ontario Airport are updated daily.

How many operators does momondo search for flights from New York LaGuardia Airport to Ontario Airport?

As of August 2026, there are 4 operators available to choose from for flights from New York LaGuardia Airport to Ontario Airport.

How old do you have to be to fly from New York LaGuardia Airport to Ontario Airport?

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from New York LaGuardia Airport to Ontario Airport.

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

The necessary travel and health documents for your Ontario Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

$154 Cheap Flights from New York LaGuardia Airport to Ontario in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from New York LaGuardia Airport to Los Angeles

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

10:55 pm - 8:36 am

LGA

ONT

12h 41m

1 stop

9:37 am - 10:00 pm

ONT

LGA

9h 23m

1 stop

$278Frontier

Tue, Aug 25 - Tue, Sep 1

10:55 pm - 8:38 am

LGA

ONT

12h 43m

1 stop

9:37 am - 10:00 pm

ONT

LGA

9h 23m

1 stop

$281Frontier

Wed, Sep 2 - Tue, Sep 8

5:25 pm - 10:59 pm

LGA

ONT

8h 34m

1 stop

5:00 am - 3:37 pm

ONT

LGA

7h 37m

1 stop

$283United Airlines

Wed, Sep 9 - Tue, Sep 22

7:00 am - 2:30 pm

LGA

ONT

10h 30m

1 stop

9:15 am - 8:10 pm

ONT

LGA

7h 55m

1 stop

$287Southwest

Sat, Sep 5 - Sat, Sep 12

4:16 pm - 10:35 pm

LGA

ONT

9h 19m

1 stop

7:00 am - 5:25 pm

ONT

LGA

7h 25m

1 stop

$287United Airlines

Sat, Sep 5 - Sat, Sep 12

7:00 am - 2:30 pm

LGA

ONT

10h 30m

1 stop

6:55 am - 7:15 pm

ONT

LGA

9h 20m

2 stops

$292Southwest

Sat, Sep 5 - Sat, Sep 12

3:00 pm - 8:05 pm

LGA

ONT

8h 05m

1 stop

12:17 pm - 10:39 pm

ONT

LGA

7h 22m

1 stop

$292Delta

Fri, Sep 11 - Tue, Sep 15

3:00 pm - 8:05 pm

LGA

ONT

8h 05m

1 stop

10:00 pm - 10:36 am

ONT

LGA

9h 36m

1 stop

$292Delta

Fri, Sep 11 - Mon, Sep 14

6:30 am - 11:43 am

LGA

ONT

8h 13m

1 stop

10:25 am - 9:18 pm

ONT

LGA

7h 53m

1 stop

$300American Airlines

Sat, Sep 5 - Sat, Sep 12

11:06 am - 6:53 pm

LGA

ONT

10h 47m

1 stop

6:00 am - 7:29 pm

ONT

LGA

10h 29m

1 stop

$302American Airlines

Thu, Sep 10 - Sun, Sep 13

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Delta flights from New York LaGuardia Airport to Ontario

Our best Delta deals on New York LaGuardia Airport to Ontario flight tickets

Delta

Sep 12

LGA6:00 amNew York LaGuardia

8h 05m

1 stop

ONT11:05 amOntario

Sep 19

ONT12:17 pmOntario

8h 23m

1 stop

LGA11:40 pmNew York LaGuardia

$302

Delta

Oct 21

LGA6:00 amNew York LaGuardia

8h 06m

1 stop

ONT11:06 amOntario

Oct 28

ONT12:18 pmOntario

7h 23m

1 stop

LGA10:41 pmNew York LaGuardia

$307

Delta

Sep 1

LGA12:59 pmNew York LaGuardia

9h 54m

1 stop

ONT7:53 pmOntario

Sep 15

ONT12:17 pmOntario

8h 23m

1 stop

LGA11:40 pmNew York LaGuardia

$309

Frontier flights from New York LaGuardia Airport to Ontario

Our best Frontier deals on New York LaGuardia Airport to Ontario flight tickets

Frontier

Aug 25

LGA10:55 pmNew York LaGuardia

12h 41m

1 stop

ONT8:36 amOntario

Sep 1

ONT9:37 amOntario

9h 23m

1 stop

LGA10:00 pmNew York LaGuardia

$278

Frontier

Sep 1

LGA10:55 pmNew York LaGuardia

12h 41m

1 stop

ONT8:36 amOntario

Sep 8

ONT9:37 amOntario

9h 23m

1 stop

LGA10:00 pmNew York LaGuardia

$281

Frontier

Sep 2

LGA10:55 pmNew York LaGuardia

12h 43m

1 stop

ONT8:38 amOntario

Sep 6

ONT8:17 amOntario

10h 43m

1 stop

LGA10:00 pmNew York LaGuardia

$283

momondo Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

New YorkOntario

LGA - ONT

LGAONT

New York LaGuardia

Tue 8/25

10:55 pm-8:36 am

1 stop12h 41m

Ontario

Tue 9/1

9:37 am-10:00 pm

1 stop9h 23m

$278

New YorkOntario

LGA - ONT

LGAONT

New York LaGuardia

Wed 9/2

10:55 pm-8:38 am

1 stop12h 43m

Ontario

Tue 9/8

9:37 am-10:00 pm

1 stop9h 23m

$281

New YorkOntario

LGA - ONT

LGAONT

New York LaGuardia

Wed 9/9

5:25 pm-10:59 pm

1 stop8h 34m

Ontario

Tue 9/22

5:00 am-3:37 pm

1 stop7h 37m

$283

New YorkOntario

LGA - ONT

LGAONT

New York LaGuardia

Sat 9/5

7:00 am-2:30 pm

1 stop10h 30m

Ontario

Sat 9/12

9:15 am-8:10 pm

1 stop7h 55m

$287

New YorkOntario

LGA - ONT

LGAONT

New York LaGuardia

Sat 9/5

4:16 pm-10:35 pm

1 stop9h 19m

Ontario

Sat 9/12

7:00 am-5:25 pm

1 stop7h 25m

$287

New YorkOntario

LGA - ONT

LGAONT

New York LaGuardia

Sat 9/5

7:00 am-2:30 pm

1 stop10h 30m

Ontario

Sat 9/12

6:55 am-7:15 pm

2 stops9h 20m

$292

Quickest round-trip

New YorkOntario

LGA - ONT

LGAONT

New York LaGuardia

Fri 9/11

3:00 pm-8:05 pm

1 stop8h 05m

Ontario

Tue 9/15

12:17 pm-10:39 pm

1 stop7h 22m

$292

New YorkOntario

LGA - ONT

LGAONT

New York LaGuardia

Fri 9/11

3:00 pm-8:05 pm

1 stop8h 05m

Ontario

Mon 9/14

10:00 pm-10:36 am

1 stop9h 36m

$292

New YorkOntario

LGA - ONT

LGAONT

New York LaGuardia

Sat 9/5

6:30 am-11:43 am

1 stop8h 13m

Ontario

Sat 9/12

10:25 am-9:18 pm

1 stop7h 53m

$300

New YorkOntario

LGA - ONT

LGAONT

New York LaGuardia

Thu 9/10

11:06 am-6:53 pm

1 stop10h 47m

Ontario

Sun 9/13

6:00 am-7:29 pm

1 stop10h 29m

$302

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from New York LaGuardia 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

Layovers

What is the typical price of a round-trip flight between New York LaGuardia Airport and Ontario?

Prices are currently low for flights on this route.

Typical prices usually range from $306 to $504.
The lowest price recently found on this route was $278.

What is the cheapest month to fly to Ontario?

In general, February is the cheapest month to fly from New York LaGuardia Airport to Ontario. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $279. If you aren’t able to travel during the month of February, then book flights to Ontario from New York LaGuardia Airport during November instead. Flights to Ontario in November, while not as cheap as those in February, still average around $317.

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 Wednesday when prices can be found for as low as $329. 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 New York LaGuardia Airport to Ontario for around $652.

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

In the afternoon is the cheapest time of day to fly from New York LaGuardia Airport to Ontario when you can find flight prices for as low as $338. Flying to Ontario in the afternoon 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 evening when prices are $359 on average. Flights to Ontario from New York LaGuardia Airport in the evening are generally more expensive because this time of day is more convenient for travelers’ schedules.

How have New York LaGuardia Airport to Ontario flight prices changed over time?

As of August 2026, prices for New York LaGuardia Airport to Ontario flights are approximately 10% cheaper when compared to flights at the same time last year.

When to book flights from New York LaGuardia Airport to Ontario

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

Estimated round-trip price

Cheap New York LaGuardia Airport to Ontario (LGA to ONT) flight deals and tips

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

Fastest flight time	7h 35m
Direct flights	None

The fastest flight from New York LaGuardia Airport to Ontario takes 7h 35m

There are no direct flights from New York LaGuardia Airport to Ontario. There are no popular flight routes from New York LaGuardia Airport to Ontario.

Search flight deals

Frequently asked questions about flying from New York LaGuardia Airport to Ontario

How far is New York LaGuardia to Ontario by plane?
There are 2419.3 mi between New York LaGuardia and Ontario. In terms of flight time, this usually takes a little over 7h 35m.
When did momondo last update prices for flights from New York LaGuardia Airport to Ontario Airport?
Prices for flights from New York LaGuardia Airport to Ontario Airport are updated daily.
How many operators does momondo search for flights from New York LaGuardia Airport to Ontario Airport?
As of August 2026, there are 4 operators available to choose from for flights from New York LaGuardia Airport to Ontario Airport.
How old do you have to be to fly from New York LaGuardia Airport to Ontario Airport?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from New York LaGuardia Airport to Ontario Airport.
What documentation or ID do you need to fly to Ontario Airport?
The necessary travel and health documents for your Ontario Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.
What is the most popular airline from New York LaGuardia Airport to Ontario?
Based on momondo bookings for flights between New York LaGuardia Airport and Ontario, the leading airline is Southwest, making up 36% of the total bookings. Other popular airlines include American Airlines with 34%, Delta with 18%, and United Airlines with 12%.

Best airlines flying from New York LaGuardia Airport to Ontario

Compare and see reviews for airlines that fly from New York LaGuardia Airport to Ontario with momondo

Airline	Rating	Free Cancellation	Price
Southwest	PriceFrom $192	Free Cancellation	Rating 8.0 4,222 reviews	Search Southwest flights
United Airlines	PriceFrom $227	Free Cancellation	Rating 7.4 10,059 reviews	Search United Airlines flights
American Airlines	PriceFrom $266	Free Cancellation	Rating 7.1 11,845 reviews	Search American Airlines flights
Delta	PriceFrom $279	Free Cancellation	Rating 7.8 8,483 reviews	Search Delta flights

Why use momondo?

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

It is quick and easy to find New York to Ontario flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Ontario that suits you.

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

All flight searches from New York to Ontario on momondo can be filtered to show those which offer flexible booking policies.

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

momondo provides multiple filters to help you find the best flight to Ontario from New York. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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 New York LaGuardia Airport to Los Angeles from $154

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Delta flights from New York LaGuardia Airport to Ontario

Our best Delta deals on New York LaGuardia Airport to Ontario flight tickets

Frontier flights from New York LaGuardia Airport to Ontario

Our best Frontier deals on New York LaGuardia Airport to Ontario flight tickets

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

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How to get the cheapest flight ticket from New York LaGuardia Airport to Ontario

What is the typical price of a round-trip flight between New York LaGuardia Airport and 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 have New York LaGuardia Airport to Ontario flight prices changed over time?

What is the cheapest airline that flies from New York LaGuardia to Ontario?

What airlines fly to Ontario?

Which airport is the most popular layover for flights between New York LaGuardia Airport and Ontario?

Which layover airport offers the lowest fares from New York LaGuardia Airport to Ontario?

Which layover airport has the shortest travel time from New York LaGuardia Airport to Ontario?

Which layover airport has the shortest connection time from New York LaGuardia Airport to Ontario?

When to book flights from New York LaGuardia Airport to Ontario

Cheap New York LaGuardia Airport to Ontario (LGA to ONT) flight deals and tips

Fastest flight time

Direct flights

Frequently asked questions about flying from New York LaGuardia Airport to Ontario

Best airlines flying from New York LaGuardia Airport to Ontario

Compare and see reviews for airlines that fly from New York LaGuardia Airport to Ontario with momondo

Why use momondo?

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.

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