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Cheap flights from Ontario to New York from $143

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 9/30. 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.
Frontier Logo
2:35 pm - 10:00 pmONT  Ontario-LGA New York LaGuardia
28h 25m2 stops Denver Intl Dallas/Fort Worth
Frontier Logo
10:55 pm - 9:53 amLGA  New York LaGuardia-ONT Ontario
13h 58m1 stop Dallas/Fort Worth
$280Frontier
Fri, Nov 6 - Tue, Nov 10
United Airlines Logo
1:18 pm - 11:24 pmONT  Ontario-LGA New York LaGuardia
7h 06m1 stop Denver Intl
United Airlines Logo
10:15 am - 6:11 pmLGA  New York LaGuardia-ONT Ontario
10h 56m2 stops Chicago O'Hare Intl San Francisco
$281United Airlines
Thu, Sep 10 - Sat, Sep 12
Southwest Logo
11:55 pm - 12:15 pmONT  Ontario-LGA New York LaGuardia
9h 20m1 stop Chicago Midway
Southwest Logo
8:00 am - 2:05 pmLGA  New York LaGuardia-ONT Ontario
9h 05m1 stop Denver Intl
$281Southwest
Fri, Nov 6 - Mon, Nov 9
Delta Logo
12:00 pm - 11:24 pmONT  Ontario-LGA New York LaGuardia
8h 24m1 stop Atlanta Hartsfield-Jackson
Delta Logo
12:59 pm - 7:53 pmLGA  New York LaGuardia-ONT Ontario
9h 54m1 stop Atlanta Hartsfield-Jackson
$282Delta
Fri, Aug 28 - Tue, Sep 1
Delta Logo
12:17 pm - 11:40 pmONT  Ontario-LGA New York LaGuardia
8h 23m1 stop Atlanta Hartsfield-Jackson
Delta Logo
3:00 pm - 10:24 pmLGA  New York LaGuardia-ONT Ontario
10h 24m1 stop Atlanta Hartsfield-Jackson
$282Delta
Tue, Sep 22 - Thu, Oct 1
Southwest Logo
9:25 am - 11:00 pmONT  Ontario-LGA New York LaGuardia
10h 35m1 stop Denver Intl
Southwest Logo
7:00 am - 4:00 pmLGA  New York LaGuardia-ONT Ontario
12h 00m1 stop Dallas Love Field
$287Southwest
Sat, Sep 5 - Sat, Sep 12
Frontier Logo
2:35 pm - 10:00 pmONT  Ontario-LGA New York LaGuardia
28h 25m2 stops Denver Intl Dallas/Fort Worth
Frontier Logo
10:55 pm - 9:53 amLGA  New York LaGuardia-ONT Ontario
13h 58m1 stop Dallas/Fort Worth
$291Frontier
Fri, Nov 6 - Tue, Nov 10
American Airlines Logo
10:10 pm - 9:00 amONT  Ontario-LGA New York LaGuardia
7h 50m1 stop Charlotte Douglas
American Airlines Logo
6:59 am - 1:30 pmLGA  New York LaGuardia-ONT Ontario
9h 31m1 stop Dallas/Fort Worth
$297American Airlines
Fri, Oct 16 - Wed, Oct 21
American Airlines Logo
10:10 pm - 9:00 amONT  Ontario-LGA New York LaGuardia
7h 50m1 stop Charlotte Douglas
American Airlines Logo
5:59 pm - 11:52 pmLGA  New York LaGuardia-ONT Ontario
8h 53m1 stop Dallas/Fort Worth
$302American Airlines
Sat, Oct 10 - Tue, Oct 13
United Airlines Logo
6:00 am - 4:42 pmONT  Ontario-LGA New York LaGuardia
7h 42m1 stop Houston George Bush Intcntl
United Airlines Logo
3:29 pm - 8:51 pmLGA  New York LaGuardia-ONT Ontario
8h 22m1 stop Denver Intl
$302United Airlines
Wed, Nov 4 - Sat, Nov 7

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Frontier flights from Ontario to New York LaGuardia Airport

Our best Frontier deals on Ontario to New York LaGuardia Airport flight tickets
Frontier
Nov 6
ONT2:35 pmOntario
28h 25m
2 stops
LGA10:00 pmNew York LaGuardia
Nov 10
LGA10:55 pmNew York LaGuardia
13h 58m
1 stop
ONT9:53 amOntario
$280
Frontier
Aug 21
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
$281
Frontier
Nov 6
ONT2:35 pmOntario
28h 25m
2 stops
LGA10:00 pmNew York LaGuardia
Nov 10
LGA10:55 pmNew York LaGuardia
13h 58m
1 stop
ONT9:53 amOntario
$291

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
Nov 4
ONT5:00 amOntario
11h 19m
2 stops
LGA7:19 pmNew York LaGuardia
Nov 7
LGA3:29 pmNew York LaGuardia
8h 22m
1 stop
ONT8:51 pmOntario
$308
United Airlines
Sep 1
ONT6:08 amOntario
10h 17m
2 stops
LGA7:25 pmNew York LaGuardia
Sep 5
LGA4:16 pmNew York LaGuardia
9h 19m
1 stop
ONT10:35 pmOntario
$312
United Airlines
Sep 6
ONT7:00 amOntario
9h 25m
1 stop
LGA7:25 pmNew York LaGuardia
Sep 10
LGA3:39 pmNew York LaGuardia
9h 20m
1 stop
ONT9:59 pmOntario
$320

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 August 18, 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 Ontario - LGA New York LaGuardia

ONTLGA

Ontario

Fri 11/6

2:35 pm-10:00 pm

2 stops28h 25m

New York LaGuardia

Tue 11/10

10:55 pm-9:53 am

1 stop13h 58m

$280

OntarioNew York

ONT Ontario - LGA New York LaGuardia

ONTLGA

Ontario

Thu 9/10

1:18 pm-11:24 pm

1 stop7h 06m

New York LaGuardia

Sat 9/12

10:15 am-6:11 pm

2 stops10h 56m

$281

OntarioNew York

ONT Ontario - LGA New York LaGuardia

ONTLGA

Ontario

Fri 11/6

11:55 pm-12:15 pm

1 stop9h 20m

New York LaGuardia

Mon 11/9

8:00 am-2:05 pm

1 stop9h 05m

$281

OntarioNew York

ONT Ontario - LGA New York LaGuardia

ONTLGA

Ontario

Fri 8/28

12:00 pm-11:24 pm

1 stop8h 24m

New York LaGuardia

Tue 9/1

12:59 pm-7:53 pm

1 stop9h 54m

$282

OntarioNew York

ONT Ontario - LGA New York LaGuardia

ONTLGA

Ontario

Tue 9/22

12:17 pm-11:40 pm

1 stop8h 23m

New York LaGuardia

Thu 10/1

3:00 pm-10:24 pm

1 stop10h 24m

$282

OntarioNew York

ONT Ontario - LGA New York LaGuardia

ONTLGA

Ontario

Sat 9/5

9:25 am-11:00 pm

1 stop10h 35m

New York LaGuardia

Sat 9/12

7:00 am-4:00 pm

1 stop12h 00m

$287

OntarioNew York

ONT Ontario - LGA New York LaGuardia

ONTLGA

Ontario

Fri 11/6

2:35 pm-10:00 pm

2 stops28h 25m

New York LaGuardia

Tue 11/10

10:55 pm-9:53 am

1 stop13h 58m

$291

OntarioNew York

ONT Ontario - LGA New York LaGuardia

ONTLGA

Ontario

Fri 10/16

10:10 pm-9:00 am

1 stop7h 50m

New York LaGuardia

Wed 10/21

6:59 am-1:30 pm

1 stop9h 31m

$297

OntarioNew York

ONT Ontario - LGA New York LaGuardia

ONTLGA

Ontario

Sat 10/10

10:10 pm-9:00 am

1 stop7h 50m

New York LaGuardia

Tue 10/13

5:59 pm-11:52 pm

1 stop8h 53m

$302
Quickest round-trip

OntarioNew York

ONT Ontario - LGA New York LaGuardia

ONTLGA

Ontario

Wed 11/4

6:00 am-4:42 pm

1 stop7h 42m

New York LaGuardia

Sat 11/7

3:29 pm-8:51 pm

1 stop8h 22m

$302

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?

Prices are currently low for flights on this route.

Typical prices usually range from $337 to $514.
The lowest price recently found on this route was $280.

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.

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 $381 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 August 2026, prices for Ontario to New York LaGuardia Airport flights are approximately 76% 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

Best Price Found

$143

Fastest flight time

7h 07m

Direct flights

None
The best one-way flight to New York LaGuardia Airport from Ontario in the past 72 hours is $143. The best round-trip flight deal from Ontario to New York LaGuardia Airport found on momondo in the last 72 hours is $280.
The fastest flight from Ontario to New York LaGuardia Airport takes 7h 07m
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 07m 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
4,218 reviews
Search Southwest flights
American AirlinesPriceFrom $193Free CancellationRating
7.1
11,944 reviews
Search American Airlines flights
United AirlinesPriceFrom $197Free CancellationRating
7.4
10,106 reviews
Search United Airlines flights
DeltaPriceFrom $257Free CancellationRating
7.8
8,503 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 $356, with the best United Airlines deals starting from $197 round-trip. 10,100 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
Wayne
Woodbridge
Parsippany
Point Pleasant Beach
Asbury Park
Long Branch
East Stroudsburg
Tannersville
Elizabeth
Staten Island
Hauppauge
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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