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LaGuardia

$110+ Cheap flights from Ontario (ONT) to LaGuardia, NY (LGA)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/3. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — LGA
Aug 23 — Aug 301
Sat 8/23
Sat 8/30
1 adult, Economy
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Cheapflights Tip: The best prices from Ontario to New York LaGuardia are usually found in January or September, booked 45 days in advance, depart on a Tuesday or Thursday and return on a Thursday

Cheap flight deals from Ontario to LaGuardia

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to LaGuardia (LGA). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated August 18, 2025.

Round-trip from

$227
(Frontier)

One-way from

$110
(Jettzy)

Popular in

June

Cheapest in

January

Average price

$372
From Ontario to New York LaGuardia
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One-way flight from Ontario to New York LaGuardia
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Highest demand for flights based on searches. 12% potential increase in price ($57 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($14 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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Find flight deals from Ontario to LaGuardia

Cheapest flights from Ontario to LaGuardia
Explore the most affordable flight options available from Ontario to LaGuardia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 18, 2025.

This CheapOair deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/2712:59 amONT - LGA
1 stop18h 06mFrontier
Thu 9/410:56 pmLGA - ONT
1 stop23h 58mFrontier
Deal found 8/17$226
This Frontier deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/136:53 amONT - LGA
1 stop9h 36mFrontier
Mon 11/1712:30 pmLGA - ONT
2 stops14h 20mFrontier
Deal found 8/17$227
This CheapOair deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/18:59 pmONT - LGA
1 stop22h 12mFrontier
Sat 10/48:47 pmLGA - ONT
1 stop21h 37mFrontier
Deal found 8/17$229
This Kiwi.com deal was found by Cheapflights users on 8/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/812:13 pmONT - LGA
1 stop29h 46mFrontier
Wed 9/1710:00 pmLGA - ONT
1 stop16h 33mFrontier
Deal found 8/16$230
This CheapOair deal was found by Cheapflights users on 8/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/238:59 pmONT - LGA
1 stop22h 12mFrontier
Mon 9/2910:56 pmLGA - ONT
1 stop23h 58mFrontier
Deal found 8/16$231
This Frontier deal was found by Cheapflights users on 8/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/16:53 amONT - LGA
2 stops13h 34mFrontier
Wed 11/510:00 pmLGA - ONT
2 stops16h 10mFrontier
Deal found 8/16$232
This FlightHub deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/77:15 pmONT - LGA
1 stop22h 44mFrontier
Sun 9/1410:56 pmLGA - ONT
1 stop11h 57mFrontier
Deal found 8/17$233
This Frontier deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/316:00 amONT - LGA
2 stops12h 05mFrontier
Fri 11/712:30 pmLGA - ONT
2 stops14h 20mFrontier
Deal found 8/17$234
This Frontier deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/258:00 amONT - LGA
2 stops11h 00mFrontier
Sat 11/11:20 pmLGA - ONT
2 stops13h 30mFrontier
Deal found 8/17$235
This FlightHub deal was found by Cheapflights users on 8/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/108:59 pmONT - LGA
1 stop22h 12mFrontier
Sun 9/1410:56 pmLGA - ONT
1 stop23h 58mFrontier
Deal found 8/16$236
This CheapOair deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/18:59 pmONT - LGA
1 stop22h 12mFrontier
Mon 10/610:56 pmLGA - ONT
1 stop27h 54mFrontier
Deal found 8/17$237
This Frontier deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/236:54 pmONT - LGA
2 stops12h 36mFrontier
Sun 10/2610:00 pmLGA - ONT
2 stops14h 35mFrontier
Deal found 8/17$239

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario to LaGuardia 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, Cheapflights users made 2,558,603 searches. Data last updated August 18, 2025.
Use the filters below to find and compare flights from Ontario to New York LaGuardia Airport that are best for you.

Fly from

Ontario

Fly to

LaGuardia

Route

Depart

Return

Price

OntarioNew York

ONT - LGA

ONTLGA

Ontario

Thu 11/13

6:53 am-7:29 pm

1 stop9h 36m

New York LaGuardia

Mon 11/17

12:30 pm-11:50 pm

2 stops14h 20m

$227

OntarioNew York

ONT - LGA

ONTLGA

Ontario

Mon 10/20

6:53 am-11:01 pm

2 stops13h 08m

New York LaGuardia

Thu 10/23

12:55 pm-11:50 pm

2 stops13h 55m

$229

OntarioNew York

ONT - LGA

ONTLGA

Ontario

Wed 10/1

8:59 pm-10:11 pm

1 stop22h 12m

New York LaGuardia

Sat 10/4

8:47 pm-6:15 pm

1 stop24h 28m

$229

OntarioNew York

ONT - LGA

ONTLGA

Ontario

Mon 9/8

12:13 pm-8:59 pm

1 stop29h 46m

New York LaGuardia

Wed 9/17

10:00 pm-11:33 am

1 stop16h 33m

$230

OntarioNew York

ONT - LGA

ONTLGA

Ontario

Tue 9/23

8:59 pm-10:11 pm

1 stop22h 12m

New York LaGuardia

Mon 9/29

10:56 pm-7:54 pm

1 stop23h 58m

$231

OntarioNew York

ONT - LGA

ONTLGA

Ontario

Sun 10/26

4:17 pm-8:59 pm

1 stop25h 42m

New York LaGuardia

Tue 11/4

8:36 pm-11:50 pm

1 stop30h 14m

$231

OntarioNew York

ONT - LGA

ONTLGA

Ontario

Mon 10/6

4:08 pm-10:30 am

2 stops15h 22m

New York LaGuardia

Sat 10/11

7:55 pm-7:49 am

1 stop14h 54m

$231

OntarioNew York

ONT - LGA

ONTLGA

Ontario

Wed 10/22

6:53 am-10:21 pm

2 stops12h 28m

New York LaGuardia

Sun 10/26

10:00 pm-9:35 am

2 stops14h 35m

$232

OntarioNew York

ONT - LGA

ONTLGA

Ontario

Tue 9/30

8:59 pm-10:11 pm

1 stop22h 12m

New York LaGuardia

Sun 10/5

10:56 pm-7:53 am

1 stop11h 57m

$232

OntarioNew York

ONT - LGA

ONTLGA

Ontario

Sat 11/1

6:53 am-11:27 pm

2 stops13h 34m

New York LaGuardia

Wed 11/5

10:00 pm-11:10 am

2 stops16h 10m

$232

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/17

Showing 1-10 of 16 results
1
2

Best time to book a flight from Ontario to LaGuardia

Have a flexible travel schedule? Discover the best time to fly to LaGuardia from Ontario with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Ontario to New York LaGuardia Airport

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

Use this chart to determine the optimal time to book a round-trip flight from Ontario to LaGuardia. Price data was last updated on August 8, 2025.

To ensure you get the cheapest price possible for a flight from Ontario to New York LaGuardia Airport, you should look to book at least 45 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from Ontario to New York LaGuardia Airport?

Currently, January is the cheapest month in which you can book a flight from Ontario to New York LaGuardia Airport (average of $199). Flying from Ontario to New York LaGuardia Airport in December is currently the most expensive (average of $268). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from ONT to LGA?

Find hourly flight availability from Ontario to LaGuardia. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 18, 2025.

A simple way to save on the total cost of your ticket is to fly from Ontario to New York LaGuardia Airport in the morning. If you’re flexible enough to do this you can expect to save up to 31% on your trip compared to booking a flight at noon.

What’s the top layover airport for flights from Ontario to New York LaGuardia Airport?

Share of 1-stop round-trip flights from Ontario to New York LaGuardia Airport chosen by Cheapflights users in the past 12 months, using the same layover each way.

Denver (DEN) – chosen by Cheapflights users on 42% of 1-stop itineraries from Ontario to New York LaGuardia Airport on Cheapflights.

What’s the cheapest layover airport for flights from Ontario to New York LaGuardia Airport?

Average round-trip fare for 1-stop flights from Ontario to New York LaGuardia Airport, chosen by Cheapflights users in the past 12 months, with the same layover each way.

Dallas (DFW) is the most affordable 1-stop option, with an average round-trip price of $173.

What’s the fastest layover option from Ontario to New York LaGuardia Airport?

Shortest average travel time for 1-stop one-way flights from Ontario to New York LaGuardia Airport, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.

Flights via Dallas (DAL) have the shortest average one-way travel time for 1-stop routes: 7h 18m.

Which airport typically offers the quickest layover for flights from Ontario to New York LaGuardia Airport?

Average layover duration for 1-stop one-way flights from Ontario to New York LaGuardia Airport, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Flights via Houston (IAH) offer the fastest connection on this route, with an average layover time of 1h 14m.

Reviews of airlines servicing LaGuardia

Get insights into the airlines that provide service to LaGuardia. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to LaGuardia. Reviews last updated August 18, 2025.
See what other customers who have flown with Southwest, Delta, and United Airlines from Ontario to New York LaGuardia Airport have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,246 reviews

Boarding

8.1

Food

7.0

Crew

8.6

Overall

8.0

Comfort

8.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Southwest
8.0
Very good
4,246 reviews
Southwest
8.0
Very good
4,246 reviews

Boarding

8.1

Food

7.0

Crew

8.6

Overall

8.0

Comfort

8.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Delta
8.0
Very good
7,981 reviews
Southwest
8.0
Very good
4,246 reviews

Boarding

8.1

Food

7.0

Crew

8.6

Overall

8.0

Comfort

8.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
United Airlines
7.4
Good
8,925 reviews
Southwest
8.0
Very good
4,246 reviews

Boarding

8.1

Food

7.0

Crew

8.6

Overall

8.0

Comfort

8.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,246 reviews

Boarding

8.1

Food

7.0

Crew

8.6

Overall

8.0

Comfort

8.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Frontier
5.8
Fair
3,212 reviews
Southwest
8.0
Very good
4,246 reviews

Boarding

8.1

Food

7.0

Crew

8.6

Overall

8.0

Comfort

8.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.

Related info for your journey

Find useful and relevant information for your journey from Ontario to LaGuardia. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Ontario to New York LaGuardia?

    If you book a flight to New York LaGuardia from Ontario, you will be flying from Ontario, which is the city’s only airport. Ontario (ONT) is located 3.1 mi from the center of Ontario. There are 0 flights from Ontario to New York LaGuardia per day from 5 different airlines.

  • What are the cheapest airlines flying from Ontario to New York LaGuardia Airport round-trip?

    According to our current data, Frontier ($128), American Airlines ($241), and United Airlines ($256) offers the cheapest pricing from Ontario to New York LaGuardia Airport. Frontier is 69% cheaper than the average price of flights available within the next 90 days to this destination.

  • Can I find deals for flights from Ontario to LaGuardia that include hotel bookings?

    Yes. In addition to deals on Ontario to LaGuardia flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Ontario to LaGuardia?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to LaGuardia.

  • Can I find deals for business class flights from Ontario to LaGuardia?

    Yes. Cheapflights offers flight deals from Ontario to LaGuardia by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Ontario to New York LaGuardia Airport?

    Currently, January is the cheapest month in which you can book a flight from Ontario to New York LaGuardia Airport (average of $199). Flying from Ontario to New York LaGuardia Airport in December is currently the most expensive (average of $268). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near New York LaGuardia Airport?

Book flights to New York LaGuardia Airport if you plan to visit one of these locations
Queens
Bronx
Elizabeth
Secaucus
Yonkers
Ronkonkoma
Mahwah
Absecon
East Rutherford
North Bergen
Staten Island
Stamford
Parsippany
New Brunswick
Carle Place
Westbury
Hoboken
East Brunswick
Avenel
Paterson

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Top 5 airlines flying from Ontario to LaGuardia

Discover the top 5 airlines that operate flights from Ontario to LaGuardia. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated August 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$128Average$170FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$241Average$416FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$256Average$459FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$281Average$440FlexibilityNo cancel feeOn-time63%
DeltaCheapest$283Average$398FlexibilityNo cancel feeOn-timeN/A

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