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Cheap flights from Ontario to New York from $134

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ontario to New York departing on 9/14. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Ontario to New York

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
7:13 pm - 9:13 am
ONT
-
LGA
11h 00m
2 stops
United Airlines Logo
5:25 pm - 10:35 pm
LGA
-
ONT
8h 10m
1 stop
$304United Airlines
Mon, Aug 31 - Fri, Sep 4
United Airlines Logo
5:45 am - 4:44 pm
ONT
-
LGA
7h 59m
1 stop
United Airlines Logo
3:29 pm - 10:35 pm
LGA
-
ONT
10h 06m
1 stop
$306United Airlines
Mon, Aug 10 - Mon, Aug 24
Frontier Logo
8:17 am - 10:00 pm
ONT
-
LGA
10h 43m
1 stop
Frontier Logo
10:55 pm - 8:38 am
LGA
-
ONT
12h 43m
1 stop
$309Frontier
Wed, Aug 12 - Wed, Aug 19
Southwest Logo
10:55 am - 10:35 pm
ONT
-
LGA
8h 40m
1 stop
Southwest Logo
6:55 am - 2:25 pm
LGA
-
ONT
10h 30m
1 stop
$312Southwest
Wed, Aug 19 - Wed, Aug 26
Frontier Logo
8:17 am - 10:00 pm
ONT
-
LGA
10h 43m
1 stop
Frontier Logo
10:55 pm - 8:38 am
LGA
-
ONT
12h 43m
1 stop
$315Frontier
Mon, Aug 17 - Wed, Aug 26
Frontier Logo
8:07 am - 10:00 pm
ONT
-
LGA
10h 53m
1 stop
Frontier Logo
10:55 pm - 7:12 am
LGA
-
ONT
11h 17m
1 stop
$317Frontier
Sat, Sep 12 - Sat, Sep 19
Frontier Logo
8:07 am - 10:00 pm
ONT
-
LGA
10h 53m
1 stop
Frontier Logo
10:55 pm - 7:12 am
LGA
-
ONT
11h 17m
1 stop
$318Frontier
Sat, Sep 12 - Sat, Sep 19
Frontier Logo
8:07 am - 10:00 pm
ONT
-
LGA
10h 53m
1 stop
Frontier Logo
10:55 pm - 7:12 am
LGA
-
ONT
11h 17m
1 stop
$319Frontier
Sat, Sep 12 - Sat, Sep 19
Delta Logo
10:00 pm - 8:10 am
ONT
-
LGA
7h 10m
1 stop
Delta Logo
12:59 pm - 7:53 pm
LGA
-
ONT
9h 54m
1 stop
$321Delta
Mon, Aug 10 - Tue, Aug 18
Delta Logo
10:00 pm - 8:10 am
ONT
-
LGA
7h 10m
1 stop
Delta Logo
12:59 pm - 7:53 pm
LGA
-
ONT
9h 54m
1 stop
$322Delta
Mon, Aug 10 - Tue, Aug 18

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United Airlines flights from Ontario to New York LaGuardia Airport

Our best United Airlines deals on Ontario to New York LaGuardia Airport flight tickets
United Airlines
Aug 31
ONT7:13 pmOntario
11h 00m
2 stops
LGA9:13 amNew York LaGuardia
Sep 4
LGA5:25 pmNew York LaGuardia
8h 10m
1 stop
ONT10:35 pmOntario
$304
United Airlines
Aug 10
ONT5:45 amOntario
7h 59m
1 stop
LGA4:44 pmNew York LaGuardia
Aug 24
LGA3:29 pmNew York LaGuardia
10h 06m
1 stop
ONT10:35 pmOntario
$306
United Airlines
Aug 3
ONT5:45 amOntario
10h 19m
1 stop
LGA7:04 pmNew York LaGuardia
Aug 24
LGA3:29 pmNew York LaGuardia
10h 06m
1 stop
ONT10:35 pmOntario
$387

Frontier flights from Ontario to New York LaGuardia Airport

Our best Frontier deals on Ontario to New York LaGuardia Airport flight tickets
Frontier
Aug 31
ONT8:17 amOntario
10h 43m
1 stop
LGA10:00 pmNew York LaGuardia
Sep 1
LGA10:55 pmNew York LaGuardia
12h 41m
1 stop
ONT8:36 amOntario
$308
Frontier
Aug 12
ONT8:17 amOntario
10h 43m
1 stop
LGA10:00 pmNew York LaGuardia
Aug 19
LGA10:55 pmNew York LaGuardia
12h 43m
1 stop
ONT8:38 amOntario
$309
Frontier
Aug 17
ONT8:17 amOntario
10h 43m
1 stop
LGA10:00 pmNew York LaGuardia
Aug 26
LGA10:55 pmNew York LaGuardia
12h 43m
1 stop
ONT8:38 amOntario
$315

momondo Fare Finder

 
Customize your flight search to find flights from Ontario to New York LaGuardia Airport that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated July 22, 2026.
Use the filters below to find and compare flights from Ontario to New York LaGuardia Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioNew York

ONT - LGA

ONTLGA

Ontario

Mon 8/31

7:13 pm-9:13 am

2 stops11h 00m

New York LaGuardia

Fri 9/4

5:25 pm-10:35 pm

1 stop8h 10m

$304

OntarioNew York

ONT - LGA

ONTLGA

Ontario

Mon 8/10

5:45 am-4:44 pm

1 stop7h 59m

New York LaGuardia

Mon 8/24

3:29 pm-10:35 pm

1 stop10h 06m

$306

OntarioNew York

ONT - LGA

ONTLGA

Ontario

Wed 8/12

8:17 am-10:00 pm

1 stop10h 43m

New York LaGuardia

Wed 8/19

10:55 pm-8:38 am

1 stop12h 43m

$309

OntarioNew York

ONT - LGA

ONTLGA

Ontario

Wed 8/19

10:55 am-10:35 pm

1 stop8h 40m

New York LaGuardia

Wed 8/26

6:55 am-2:25 pm

1 stop10h 30m

$312

OntarioNew York

ONT - LGA

ONTLGA

Ontario

Mon 8/17

8:17 am-10:00 pm

1 stop10h 43m

New York LaGuardia

Wed 8/26

10:55 pm-8:38 am

1 stop12h 43m

$315

OntarioNew York

ONT - LGA

ONTLGA

Ontario

Sat 9/12

8:07 am-10:00 pm

1 stop10h 53m

New York LaGuardia

Sat 9/19

10:55 pm-7:12 am

1 stop11h 17m

$317

OntarioNew York

ONT - LGA

ONTLGA

Ontario

Sat 9/12

8:07 am-10:00 pm

1 stop10h 53m

New York LaGuardia

Sat 9/19

10:55 pm-7:12 am

1 stop11h 17m

$318

OntarioNew York

ONT - LGA

ONTLGA

Ontario

Sat 9/12

8:07 am-10:00 pm

1 stop10h 53m

New York LaGuardia

Sat 9/19

10:55 pm-7:12 am

1 stop11h 17m

$319
Quickest round-trip

OntarioNew York

ONT - LGA

ONTLGA

Ontario

Mon 8/10

10:00 pm-8:10 am

1 stop7h 10m

New York LaGuardia

Tue 8/18

12:59 pm-7:53 pm

1 stop9h 54m

$321

OntarioNew York

ONT - LGA

ONTLGA

Ontario

Mon 8/10

10:00 pm-8:10 am

1 stop7h 10m

New York LaGuardia

Tue 8/18

12:59 pm-7:53 pm

1 stop9h 54m

$322

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to New York from

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

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

What is the cheapest month to fly to New York LaGuardia Airport?

The cheapest month to fly to New York LaGuardia Airport from Ontario is in February. Flight prices, which tend to average around $279, are often lower during this time because this is during the off-season. If you don’t want to visit New York LaGuardia Airport in February, then you should wait until January to fly from Ontario, when ticket prices are also cheap, with an average price of $282.

What is the cheapest Ontario to New York LaGuardia flight route?

Fly from Ontario to New York LaGuardia for the best Ontario - New York LaGuardia flight prices

How far in advance should I book a flight from Ontario to New York LaGuardia Airport?

You are more likely to see cheaper flights to New York LaGuardia Airport from Ontario when booking weeks ahead of your departure date. In general, you can expect to find flights to New York LaGuardia Airport for around $384 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to New York LaGuardia Airport from Ontario for as low as $257 on momondo.

What cabin class options are available on Ontario to New York LaGuardia Airport flights?

There is only 1 cabin class available to choose from on Ontario to New York LaGuardia Airport flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

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

As of July 2026, prices for Ontario to New York LaGuardia Airport flights are approximately 8% cheaper when compared to flights at the same time last year.

When to book flights from Ontario to New York LaGuardia Airport

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

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

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

Fastest flight time

7h 09m

Direct flights

None
The fastest flight from Ontario to New York LaGuardia Airport takes 7h 09m
There are no direct flights from Ontario to New York LaGuardia Airport. There are no popular flight routes from Ontario to New York LaGuardia Airport.
Search flight deals

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

  • How far is Ontario to New York LaGuardia by plane?

    There are 2419.3 mi between Ontario and New York LaGuardia. Typically, this will take 7h 09m by plane in normal conditions.

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

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

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

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

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Ontario Airport to New York LaGuardia Airport.

  • What documentation or ID do you need to fly to New York LaGuardia Airport?

    The necessary travel and health documents for your New York LaGuardia 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 plane model from Ontario to New York LaGuardia Airport?

  • What is the most popular airline from Ontario to New York LaGuardia Airport?

Best airlines flying from Ontario to New York LaGuardia Airport

Compare and see reviews for airlines that fly from Ontario to New York LaGuardia Airport with momondo
Airline
Rating
Free Cancellation
Price
SouthwestPriceFrom $192Free CancellationRating
8.0
4,241 reviews
Search Southwest flights
American AirlinesPriceFrom $193Free CancellationRating
7.1
11,834 reviews
Search American Airlines flights
United AirlinesPriceFrom $197Free CancellationRating
7.4
10,020 reviews
Search United Airlines flights
DeltaPriceFrom $257Free CancellationRating
7.8
8,476 reviews
Search Delta flights

  • United Airlines Flights From Ontario to New York LaGuardia Airport

    Across 6 United Airlines flights from Ontario to New York LaGuardia Airport this week, the average price was $338, with the best United Airlines deals starting from $197 round-trip. 10,020 users have rated United Airlines on momondo, with an average score of 7.4/10.

Traveling to a place near New York?

Book flights to New York if you plan to visit one of these locations
Queens
Seaside Heights
Bronx
Yonkers
East Rutherford
Mount Laurel
Secaucus
Stamford
Asbury Park
Point Pleasant Beach
Wayne
Woodbridge
Parsippany
Long Branch
East Stroudsburg
Tannersville
Elizabeth
Staten Island
Spring Lake
Hauppauge

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Ontario to New York. Millions of users trust and use momondo every year so you are in good hands.

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

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

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Ontario to New York.

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

If you are not ready to book a flight from Ontario to New York now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to New York and let you know when they change.

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