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Cheap flights from Ontario to New York from $141

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 5/19. 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.
Delta Logo
10:00 pm - 8:14 am
ONT
-
LGA
7h 14m
1 stop
Delta Logo
6:00 am - 10:57 am
LGA
-
ONT
7h 57m
1 stop
$281Delta
Sun, May 10 - Wed, May 13
Multiple Airlines Logo
8:06 pm - 10:00 pm
ONT
-
LGA
22h 54m
1 stop
Multiple Airlines Logo
4:59 pm - 7:35 am
LGA
-
ONT
17h 36m
2 stops
$283Multiple Airlines
Tue, May 5 - Thu, May 14
Multiple Airlines Logo
8:06 pm - 10:00 pm
ONT
-
LGA
22h 54m
1 stop
Multiple Airlines Logo
6:29 am - 7:08 am
LGA
-
ONT
27h 39m
2 stops
$284Multiple Airlines
Sun, May 17 - Sun, May 24
Multiple Airlines Logo
10:50 am - 10:00 pm
ONT
-
LGA
32h 10m
2 stops
Multiple Airlines Logo
5:45 am - 7:11 pm
LGA
-
ONT
16h 26m
1 stop
$285Multiple Airlines
Tue, May 5 - Wed, May 13
Delta Logo
9:50 am - 11:25 pm
ONT
-
LGA
10h 35m
2 stops
Delta Logo
1:59 pm - 9:48 pm
LGA
-
ONT
10h 49m
1 stop
$286Delta
Thu, May 7 - Tue, May 12
Multiple Airlines Logo
4:39 pm - 10:00 pm
ONT
-
LGA
26h 21m
2 stops
Multiple Airlines Logo
11:59 am - 7:35 am
LGA
-
ONT
22h 36m
1 stop
$287Multiple Airlines
Tue, May 19 - Tue, May 26
Delta Logo
10:00 pm - 9:45 am
ONT
-
LGA
8h 45m
1 stop
Delta Logo
6:00 am - 10:57 am
LGA
-
ONT
7h 57m
1 stop
$288Delta
Mon, May 18 - Fri, May 29
Multiple Airlines Logo
8:06 pm - 10:00 pm
ONT
-
LGA
22h 54m
1 stop
Multiple Airlines Logo
8:15 pm - 7:35 am
LGA
-
ONT
38h 20m
2 stops
$289Multiple Airlines
Tue, May 5 - Sat, May 9
Delta Logo
9:50 am - 11:25 pm
ONT
-
LGA
10h 35m
2 stops
Delta Logo
2:46 pm - 11:34 pm
LGA
-
ONT
11h 48m
2 stops
$291Delta
Thu, May 7 - Tue, May 12
American Airlines Logo
11:59 pm - 11:28 am
ONT
-
LGA
8h 29m
1 stop
American Airlines Logo
1:54 pm - 8:27 pm
LGA
-
ONT
9h 33m
1 stop
$292American Airlines
Thu, May 7 - Tue, May 12

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Delta flights from Ontario to New York LaGuardia Airport

Our best Delta deals on Ontario to New York LaGuardia Airport flight tickets
Delta
Sep 29
ONT10:59 pmOntario
7h 46m
1 stop
LGA9:45 amNew York LaGuardia
Oct 6
LGA1:00 pmNew York LaGuardia
8h 18m
1 stop
ONT6:18 pmOntario
$281
Delta
Aug 7
ONT10:00 pmOntario
9h 41m
1 stop
LGA10:41 amNew York LaGuardia
Aug 12
LGA1:45 pmNew York LaGuardia
11h 11m
2 stops
ONT9:56 pmOntario
$282
Delta
May 7
ONT9:50 amOntario
10h 35m
2 stops
LGA11:25 pmNew York LaGuardia
May 12
LGA1:59 pmNew York LaGuardia
10h 49m
1 stop
ONT9:48 pmOntario
$286

American Airlines flights from Ontario to New York LaGuardia Airport

Our best American Airlines deals on Ontario to New York LaGuardia Airport flight tickets
American Airlines
May 7
ONT11:59 pmOntario
8h 29m
1 stop
LGA11:28 amNew York LaGuardia
May 12
LGA1:54 pmNew York LaGuardia
9h 33m
1 stop
ONT8:27 pmOntario
$292
American Airlines
May 3
ONT11:59 pmOntario
7h 31m
1 stop
LGA10:30 amNew York LaGuardia
May 7
LGA5:58 pmNew York LaGuardia
8h 48m
1 stop
ONT11:46 pmOntario
$306
American Airlines
May 12
ONT9:24 amOntario
9h 35m
2 stops
LGA9:59 pmNew York LaGuardia
May 16
LGA8:00 amNew York LaGuardia
11h 22m
2 stops
ONT4:22 pmOntario
$323

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 April 23, 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
Quickest round-trip

OntarioNew York

ONT - LGA

ONTLGA

Ontario

Sun 5/10

10:00 pm-8:14 am

1 stop7h 14m

New York LaGuardia

Wed 5/13

6:00 am-10:57 am

1 stop7h 57m

$281

OntarioNew York

ONT - LGA

ONTLGA

Ontario

Tue 5/5

8:06 pm-10:00 pm

1 stop22h 54m

New York LaGuardia

Thu 5/14

4:59 pm-7:35 am

2 stops17h 36m

$283

OntarioNew York

ONT - LGA

ONTLGA

Ontario

Sun 5/17

8:06 pm-10:00 pm

1 stop22h 54m

New York LaGuardia

Sun 5/24

6:29 am-7:08 am

2 stops27h 39m

$284

OntarioNew York

ONT - LGA

ONTLGA

Ontario

Tue 5/5

10:50 am-10:00 pm

2 stops32h 10m

New York LaGuardia

Wed 5/13

5:45 am-7:11 pm

1 stop16h 26m

$285

OntarioNew York

ONT - LGA

ONTLGA

Ontario

Thu 5/7

9:50 am-11:25 pm

2 stops10h 35m

New York LaGuardia

Tue 5/12

1:59 pm-9:48 pm

1 stop10h 49m

$286

OntarioNew York

ONT - LGA

ONTLGA

Ontario

Tue 5/19

4:39 pm-10:00 pm

2 stops26h 21m

New York LaGuardia

Tue 5/26

11:59 am-7:35 am

1 stop22h 36m

$287

OntarioNew York

ONT - LGA

ONTLGA

Ontario

Mon 5/18

10:00 pm-9:45 am

1 stop8h 45m

New York LaGuardia

Fri 5/29

6:00 am-10:57 am

1 stop7h 57m

$288

OntarioNew York

ONT - LGA

ONTLGA

Ontario

Tue 5/5

8:06 pm-10:00 pm

1 stop22h 54m

New York LaGuardia

Sat 5/9

8:15 pm-7:35 am

2 stops38h 20m

$289

OntarioNew York

ONT - LGA

ONTLGA

Ontario

Thu 5/7

9:50 am-11:25 pm

2 stops10h 35m

New York LaGuardia

Tue 5/12

2:46 pm-11:34 pm

2 stops11h 48m

$291

OntarioNew York

ONT - LGA

ONTLGA

Ontario

Thu 5/7

11:59 pm-11:28 am

1 stop8h 29m

New York LaGuardia

Tue 5/12

1:54 pm-8:27 pm

1 stop9h 33m

$292

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 $382 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 April 2026, prices for Ontario to New York LaGuardia Airport flights are approximately 31% 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 00m

Direct flights

None
The fastest flight from Ontario to New York LaGuardia Airport takes 7h 00m
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 00m 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
4,327 reviews
Search Southwest flights
American AirlinesPriceFrom $193Free CancellationRating
7.1
11,659 reviews
Search American Airlines flights
United AirlinesPriceFrom $197Free CancellationRating
7.4
9,637 reviews
Search United Airlines flights
DeltaPriceFrom $257Free CancellationRating
7.9
8,438 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. 9,637 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
Beach Haven
Long Branch
Wayne
Stamford
Spring Lake
Tannersville
Woodbridge
Parsippany
East Stroudsburg
Secaucus
Mount Laurel
Ocean Grove
Edgewater

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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