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Cheap flights from Ontario to New York from $149

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 6/9. 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
0 bags

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Find the cheapest flights from Ontario to New York

Cheap round-trip flights

Enter your travel dates to find the best prices.
American Airlines Logo
11:59 pm - 12:02 pm
ONT
-
LGA
9h 03m
1 stop
American Airlines Logo
12:57 pm - 6:47 pm
LGA
-
ONT
8h 50m
1 stop
$287American Airlines
Mon, Aug 10 - Thu, Aug 13
Southwest Logo
1:20 pm - 11:05 pm
ONT
-
LGA
6h 45m
1 stop
Southwest Logo
6:55 am - 12:40 pm
LGA
-
ONT
8h 45m
1 stop
$298Southwest
Tue, Jul 21 - Tue, Jul 28
Delta Logo
11:48 am - 11:24 pm
ONT
-
LGA
8h 36m
1 stop
Delta Logo
6:00 am - 10:38 am
LGA
-
ONT
7h 38m
1 stop
$301Delta
Thu, Jul 16 - Wed, Jul 22
American Airlines Logo
11:59 pm - 12:59 pm
ONT
-
LGA
10h 00m
1 stop
American Airlines Logo
5:01 pm - 10:38 pm
LGA
-
ONT
8h 37m
1 stop
$302American Airlines
Mon, Jun 1 - Wed, Jun 3
Southwest Logo
7:40 am - 11:00 pm
ONT
-
LGA
12h 20m
1 stop
Southwest Logo
6:05 am - 12:30 pm
LGA
-
ONT
9h 25m
1 stop
$303Southwest
Wed, Aug 5 - Tue, Aug 11
American Airlines Logo
5:44 am - 6:04 pm
ONT
-
LGA
9h 20m
1 stop
American Airlines Logo
3:00 pm - 10:39 pm
LGA
-
ONT
10h 39m
1 stop
$304American Airlines
Wed, Jun 3 - Fri, Jun 5
Delta Logo
11:50 am - 10:24 pm
ONT
-
LGA
7h 34m
1 stop
Delta Logo
6:00 am - 10:40 am
LGA
-
ONT
7h 40m
1 stop
$308Delta
Wed, Jun 10 - Tue, Jun 16
Southwest Logo
5:30 am - 4:50 pm
ONT
-
LGA
8h 20m
2 stops
Southwest Logo
7:25 am - 5:55 pm
LGA
-
ONT
13h 30m
1 stop
$309Southwest
Tue, Jul 14 - Wed, Jul 22
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
$310Frontier
Tue, Sep 29 - Tue, Oct 13
Delta Logo
11:48 am - 10:27 pm
ONT
-
LGA
7h 39m
1 stop
Delta Logo
6:00 am - 10:38 am
LGA
-
ONT
7h 38m
1 stop
$317Delta
Wed, Jul 8 - Wed, Jul 15

Frontier flights from Ontario to New York LaGuardia Airport

Our best Frontier deals on Ontario to New York LaGuardia Airport flight tickets
Frontier
Sep 29
ONT8:07 amOntario
10h 53m
1 stop
LGA10:00 pmNew York LaGuardia
Oct 13
LGA10:55 pmNew York LaGuardia
11h 17m
1 stop
ONT7:12 amOntario
$310
Frontier
Jul 9
ONT11:48 amOntario
7h 39m
1 stop
LGA10:27 pmNew York LaGuardia
Jul 15
LGA10:55 pmNew York LaGuardia
12h 42m
1 stop
ONT8:37 amOntario
$348
Frontier
Sep 23
ONT8:07 amOntario
10h 53m
1 stop
LGA10:00 pmNew York LaGuardia
Sep 29
LGA10:55 pmNew York LaGuardia
11h 17m
1 stop
ONT7:12 amOntario
$350

Southwest flights from Ontario to New York LaGuardia Airport

Our best Southwest deals on Ontario to New York LaGuardia Airport flight tickets
Southwest
Jul 21
ONT1:20 pmOntario
6h 45m
1 stop
LGA11:05 pmNew York LaGuardia
Jul 28
LGA6:55 amNew York LaGuardia
8h 45m
1 stop
ONT12:40 pmOntario
$298
Southwest
Aug 5
ONT7:40 amOntario
12h 20m
1 stop
LGA11:00 pmNew York LaGuardia
Aug 11
LGA6:05 amNew York LaGuardia
9h 25m
1 stop
ONT12:30 pmOntario
$303
Southwest
May 27
ONT10:30 amOntario
9h 15m
2 stops
LGA10:45 pmNew York LaGuardia
Jun 3
LGA7:25 amNew York LaGuardia
8h 50m
1 stop
ONT1:15 pmOntario
$307

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 May 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 8/10

11:59 pm-12:02 pm

1 stop9h 03m

New York LaGuardia

Thu 8/13

12:57 pm-6:47 pm

1 stop8h 50m

$287

OntarioNew York

ONT - LGA

ONTLGA

Ontario

Tue 7/21

1:20 pm-11:05 pm

1 stop6h 45m

New York LaGuardia

Tue 7/28

6:55 am-12:40 pm

1 stop8h 45m

$298

OntarioNew York

ONT - LGA

ONTLGA

Ontario

Thu 7/16

11:48 am-11:24 pm

1 stop8h 36m

New York LaGuardia

Wed 7/22

6:00 am-10:38 am

1 stop7h 38m

$301

OntarioNew York

ONT - LGA

ONTLGA

Ontario

Mon 6/1

11:59 pm-12:59 pm

1 stop10h 00m

New York LaGuardia

Wed 6/3

5:01 pm-10:38 pm

1 stop8h 37m

$302

OntarioNew York

ONT - LGA

ONTLGA

Ontario

Wed 8/5

7:40 am-11:00 pm

1 stop12h 20m

New York LaGuardia

Tue 8/11

6:05 am-12:30 pm

1 stop9h 25m

$303

OntarioNew York

ONT - LGA

ONTLGA

Ontario

Wed 6/3

5:44 am-6:04 pm

1 stop9h 20m

New York LaGuardia

Fri 6/5

3:00 pm-10:39 pm

1 stop10h 39m

$304
Quickest round-trip

OntarioNew York

ONT - LGA

ONTLGA

Ontario

Wed 6/10

11:50 am-10:24 pm

1 stop7h 34m

New York LaGuardia

Tue 6/16

6:00 am-10:40 am

1 stop7h 40m

$308

OntarioNew York

ONT - LGA

ONTLGA

Ontario

Tue 7/14

5:30 am-4:50 pm

2 stops8h 20m

New York LaGuardia

Wed 7/22

7:25 am-5:55 pm

1 stop13h 30m

$309

OntarioNew York

ONT - LGA

ONTLGA

Ontario

Tue 9/29

8:07 am-10:00 pm

1 stop10h 53m

New York LaGuardia

Tue 10/13

10:55 pm-7:12 am

1 stop11h 17m

$310

OntarioNew York

ONT - LGA

ONTLGA

Ontario

Wed 7/8

11:48 am-10:27 pm

1 stop7h 39m

New York LaGuardia

Wed 7/15

6:00 am-10:38 am

1 stop7h 38m

$317

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 January. 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 January, then you should wait until February to fly from Ontario, when ticket prices are also cheap, with an average price of $295.

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 $376 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.

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

As of May 2026, prices for Ontario to New York LaGuardia Airport flights are approximately 28% more expensive 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 10m

Direct flights

None
The fastest flight from Ontario to New York LaGuardia Airport takes 7h 10m
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 10m 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
7.9
4,278 reviews
Search Southwest flights
American AirlinesPriceFrom $193Free CancellationRating
7.1
11,644 reviews
Search American Airlines flights
United AirlinesPriceFrom $197Free CancellationRating
7.4
9,751 reviews
Search United Airlines flights
DeltaPriceFrom $262Free CancellationRating
7.9
8,449 reviews
Search Delta flights

  • United Airlines Flights From Ontario to New York LaGuardia Airport

    Across 7 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. 9,751 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
Seaside Heights
Queens
Bronx
Yonkers
East Rutherford
Asbury Park
Point Pleasant Beach
Long Branch
Beach Haven
Stamford
Spring Lake
Woodbridge
Tannersville
Mount Laurel
Parsippany
East Stroudsburg
Secaucus
Ocean Grove
Elizabeth
Wayne

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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