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Cheap flights from Ontario to New York from $99

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 4/29. 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.
Frontier Logo
8:40 am - 3:59 pm
ONT
-
LGA
28h 19m
2 stops
Frontier Logo
10:00 pm - 4:15 pm
LGA
-
ONT
21h 15m
1 stop
$216Frontier
Tue, Mar 3 - Tue, Mar 10
Multiple Airlines Logo
1:18 pm - 11:55 pm
ONT
-
LGA
31h 37m
1 stop
Multiple Airlines Logo
10:55 pm - 11:59 pm
LGA
-
ONT
28h 04m
2 stops
$235Multiple Airlines
Mon, Mar 2 - Tue, Mar 10
Multiple Airlines Logo
6:43 pm - 2:00 pm
ONT
-
LGA
16h 17m
2 stops
Multiple Airlines Logo
10:00 pm - 4:15 pm
LGA
-
ONT
21h 15m
1 stop
$237Multiple Airlines
Mon, Mar 2 - Tue, Mar 10
Multiple Airlines Logo
6:43 pm - 2:00 pm
ONT
-
LGA
16h 17m
2 stops
Multiple Airlines Logo
10:00 pm - 5:39 pm
LGA
-
ONT
22h 39m
1 stop
$241Multiple Airlines
Mon, Feb 23 - Fri, Mar 6
Multiple Airlines Logo
8:35 am - 12:00 pm
ONT
-
LGA
24h 25m
2 stops
Multiple Airlines Logo
10:00 pm - 5:39 pm
LGA
-
ONT
22h 39m
1 stop
$242Multiple Airlines
Tue, Feb 24 - Fri, Mar 6
Frontier Logo
7:17 pm - 3:59 pm
ONT
-
LGA
17h 42m
2 stops
Frontier Logo
10:00 pm - 5:39 pm
LGA
-
ONT
22h 39m
1 stop
$245Frontier
Wed, Feb 25 - Fri, Mar 6
United Airlines Logo
5:00 am - 3:45 pm
ONT
-
LGA
7h 45m
1 stop
United Airlines Logo
7:15 am - 12:49 pm
LGA
-
ONT
8h 34m
1 stop
$249United Airlines
Tue, Mar 3 - Tue, Mar 10
Multiple Airlines Logo
1:18 pm - 11:55 pm
ONT
-
LGA
31h 37m
1 stop
Multiple Airlines Logo
10:00 pm - 4:15 pm
LGA
-
ONT
21h 15m
1 stop
$250Multiple Airlines
Mon, Mar 2 - Tue, Mar 10
American Airlines Logo
10:37 pm - 9:21 am
ONT
-
LGA
7h 44m
1 stop
American Airlines Logo
12:58 pm - 7:45 pm
LGA
-
ONT
9h 47m
1 stop
$251American Airlines
Wed, Feb 25 - Wed, Mar 4
Multiple Airlines Logo
6:00 am - 11:55 pm
ONT
-
LGA
14h 55m
2 stops
Multiple Airlines Logo
10:00 pm - 5:39 pm
LGA
-
ONT
22h 39m
1 stop
$253Multiple Airlines
Sat, Feb 28 - Fri, Mar 6

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
Feb 25
ONT6:00 amOntario
8h 01m
1 stop
LGA5:01 pmNew York LaGuardia
Mar 4
LGA5:07 pmNew York LaGuardia
8h 42m
1 stop
ONT10:49 pmOntario
$251
American Airlines
Feb 25
ONT7:00 amOntario
7h 59m
1 stop
LGA5:59 pmNew York LaGuardia
Mar 2
LGA4:05 pmNew York LaGuardia
9h 44m
1 stop
ONT10:49 pmOntario
$254
American Airlines
Feb 28
ONT11:58 pmOntario
8h 32m
1 stop
LGA11:30 amNew York LaGuardia
Mar 11
LGA3:15 pmNew York LaGuardia
9h 09m
1 stop
ONT9:24 pmOntario
$274

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
Mar 3
ONT5:00 amOntario
7h 45m
1 stop
LGA3:45 pmNew York LaGuardia
Mar 10
LGA3:20 pmNew York LaGuardia
9h 58m
1 stop
ONT10:18 pmOntario
$249
United Airlines
Mar 3
ONT5:00 amOntario
7h 45m
1 stop
LGA3:45 pmNew York LaGuardia
Mar 10
LGA2:59 pmNew York LaGuardia
10h 19m
2 stops
ONT10:18 pmOntario
$255
United Airlines
Apr 8
ONT5:10 amOntario
7h 40m
1 stop
LGA3:50 pmNew York LaGuardia
Apr 13
LGA5:10 pmNew York LaGuardia
8h 16m
1 stop
ONT10:26 pmOntario
$273

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 February 3, 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

OntarioNew York

ONT - LGA

ONTLGA

Ontario

Tue 3/3

8:40 am-3:59 pm

2 stops28h 19m

New York LaGuardia

Tue 3/10

10:00 pm-4:15 pm

1 stop21h 15m

$216

OntarioNew York

ONT - LGA

ONTLGA

Ontario

Mon 3/2

1:18 pm-11:55 pm

1 stop31h 37m

New York LaGuardia

Tue 3/10

10:55 pm-11:59 pm

2 stops28h 04m

$235

OntarioNew York

ONT - LGA

ONTLGA

Ontario

Mon 3/2

6:43 pm-2:00 pm

2 stops16h 17m

New York LaGuardia

Tue 3/10

10:00 pm-4:15 pm

1 stop21h 15m

$237

OntarioNew York

ONT - LGA

ONTLGA

Ontario

Mon 2/23

6:43 pm-2:00 pm

2 stops16h 17m

New York LaGuardia

Fri 3/6

10:00 pm-5:39 pm

1 stop22h 39m

$241

OntarioNew York

ONT - LGA

ONTLGA

Ontario

Tue 2/24

8:35 am-12:00 pm

2 stops24h 25m

New York LaGuardia

Fri 3/6

10:00 pm-5:39 pm

1 stop22h 39m

$242

OntarioNew York

ONT - LGA

ONTLGA

Ontario

Wed 2/25

7:17 pm-3:59 pm

2 stops17h 42m

New York LaGuardia

Fri 3/6

10:00 pm-5:39 pm

1 stop22h 39m

$245

OntarioNew York

ONT - LGA

ONTLGA

Ontario

Tue 3/3

5:00 am-3:45 pm

1 stop7h 45m

New York LaGuardia

Tue 3/10

7:15 am-12:49 pm

1 stop8h 34m

$249

OntarioNew York

ONT - LGA

ONTLGA

Ontario

Mon 3/2

1:18 pm-11:55 pm

1 stop31h 37m

New York LaGuardia

Tue 3/10

10:00 pm-4:15 pm

1 stop21h 15m

$250

OntarioNew York

ONT - LGA

ONTLGA

Ontario

Wed 2/25

10:37 pm-9:21 am

1 stop7h 44m

New York LaGuardia

Wed 3/4

12:58 pm-7:45 pm

1 stop9h 47m

$251

OntarioNew York

ONT - LGA

ONTLGA

Ontario

Sat 2/28

6:00 am-11:55 pm

2 stops14h 55m

New York LaGuardia

Fri 3/6

10:00 pm-5:39 pm

1 stop22h 39m

$253

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 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 $286, 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 November to fly from Ontario, when ticket prices are also cheap, with an average price of $296.

How far in advance should I book a flight 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 $278 on momondo.

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

As of February 2026, prices for Ontario to New York LaGuardia Airport flights are approximately 10% 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

  • 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
FrontierPriceFrom $139Free CancellationRating
5.7
3,051 reviews
Search Frontier flights
SouthwestPriceFrom $192Free CancellationRating
8.0
4,272 reviews
Search Southwest flights
United AirlinesPriceFrom $197Free CancellationRating
7.4
9,236 reviews
Search United Airlines flights
American AirlinesPriceFrom $200Free CancellationRating
7.2
11,216 reviews
Search American Airlines flights
DeltaPriceFrom $257Free CancellationRating
7.9
8,138 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 $418, with the best United Airlines deals starting from $197 round-trip. 9,236 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
Spring Lake
Tannersville
Wayne
Stamford
Secaucus
East Stroudsburg
Ocean Grove
Parsippany
Elizabeth
Mount Laurel
Woodbridge

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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