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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 11/20. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — LGA
Dec 6 — Dec 131
Sat 12/6
Sat 12/13
1 adult, Economy
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1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

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Cheapflights Tip: The best prices from Ontario to New York LaGuardia are usually found in January or October, booked 52 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 November 6, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$185
(Kiwi.com)

One-way from

$110
(Frontier)

Popular in

December

Cheapest in

January

Average price

$338
Provider with most accurate pricing for Ontario-New York LaGuardia flight deals.
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Provider most trusted by Cheapflights users for Ontario-New York LaGuardia flights.
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From Ontario to New York LaGuardia
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One-way flight from Ontario to New York LaGuardia
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High demand for flights, 0% potential price rise
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Cheapest flight prices on average. 3% potential price decrease ($16 potential savings vs. average RT price).
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Average for round-trip flights in November 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 November 6, 2025.

This Kiwi.com deal was found by Cheapflights users on 11/5. 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.
Tue 11/188:45 amONT - LGA
1 stop10h 15mFrontier
Fri 11/2110:58 pmLGA - ONT
1 stop27h 59mFrontier
Deal found 11/5$192
This Southwest deal was found by Cheapflights users on 11/4. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/811:15 amONT - LGA
1 stop8h 40mSouthwest
Fri 12/125:55 pmLGA - ONT
1 stop9h 10mSouthwest
Deal found 11/4$193
This Kiwi.com deal was found by Cheapflights users on 11/6. 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.
Sun 12/72:59 pmONT - LGA
2 stops29h 06mFrontier
Wed 12/1010:55 pmLGA - ONT
1 stop15h 14mFrontier
Deal found 11/6$194
This CheapOair deal was found by Cheapflights users on 11/5. 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.
Thu 11/208:45 amONT - LGA
1 stop9h 15mFrontier
Wed 12/310:55 pmLGA - ONT
1 stop15h 14mFrontier
Deal found 11/5$196
This Southwest deal was found by Cheapflights users on 11/3. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/39:55 amONT - LGA
2 stops9h 00mSouthwest
Tue 12/97:15 amLGA - ONT
1 stop10h 15mSouthwest
Deal found 11/3$198
This Kiwi.com deal was found by Cheapflights users on 11/5. 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.
Thu 12/47:33 pmONT - LGA
1 stop22h 40mFrontier
Thu 12/116:20 amLGA - ONT
2 stops37h 13mFrontier
Deal found 11/5$201
This Kiwi.com deal was found by Cheapflights users on 11/5. 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.
Thu 11/136:53 amONT - LGA
1 stop12h 07mFrontier
Tue 11/1810:55 pmLGA - ONT
1 stop25h 32mFrontier
Deal found 11/5$202
This Kiwi.com deal was found by Cheapflights users on 11/5. 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.
Wed 11/198:45 amONT - LGA
2 stops11h 42mFrontier
Sun 11/2310:00 pmLGA - ONT
1 stop12h 20mFrontier
Deal found 11/5$203
This Frontier deal was found by Cheapflights users on 11/4. 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.
Mon 11/108:24 amONT - LGA
1 stop9h 41mFrontier
Wed 11/1910:00 pmLGA - ONT
1 stop12h 50mFrontier
Deal found 11/4$206
This Kiwi.com deal was found by Cheapflights users on 11/4. 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.
Thu 12/410:12 pmONT - LGA
2 stops20h 48mFrontier
Sat 12/610:55 pmLGA - ONT
1 stop19h 11mFrontier
Deal found 11/4$207
This Kiwi.com deal was found by Cheapflights users on 11/4. 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.
Tue 12/212:30 pmONT - LGA
1 stop29h 27mMultiple Airlines
Tue 12/98:30 pmLGA - ONT
2 stops49h 05mMultiple Airlines
Deal found 11/4$212
This Trip.com deal was found by Cheapflights users on 11/5. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/188:45 amONT - LGA
1 stop10h 15mFrontier
Wed 12/310:55 pmLGA - ONT
1 stop15h 14mFrontier
Deal found 11/5$217

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 November 6, 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

Fri 1/30

11:00 am-9:30 pm

1 stop7h 30m

New York LaGuardia

Tue 2/3

2:00 pm-9:45 pm

1 stop10h 45m

$193

OntarioNew York

ONT - LGA

ONTLGA

Ontario

Sat 12/6

10:50 am-8:45 pm

1 stop6h 55m

New York LaGuardia

Sat 12/13

6:25 am-4:30 pm

1 stop13h 05m

$198

OntarioNew York

ONT - LGA

ONTLGA

Ontario

Wed 12/3

1:34 pm-11:30 pm

1 stop6h 56m

New York LaGuardia

Wed 12/10

1:15 pm-10:49 pm

2 stops12h 34m

$252

OntarioNew York

ONT - LGA

ONTLGA

Ontario

Mon 12/8

10:30 am-8:15 pm

1 stop6h 45m

New York LaGuardia

Thu 12/11

7:15 am-2:30 pm

1 stop10h 15m

$254

OntarioNew York

ONT - LGA

ONTLGA

Ontario

Wed 1/28

10:30 pm-8:48 am

1 stop7h 18m

New York LaGuardia

Tue 2/3

6:00 am-4:13 pm

2 stops13h 13m

$262

OntarioNew York

ONT - LGA

ONTLGA

Ontario

Wed 12/10

6:00 am-7:48 pm

2 stops10h 48m

New York LaGuardia

Fri 12/12

4:00 pm-11:58 pm

2 stops10h 58m

$267

OntarioNew York

ONT - LGA

ONTLGA

Ontario

Wed 12/3

12:12 pm-10:41 pm

1 stop7h 29m

New York LaGuardia

Sat 12/6

6:00 am-11:02 am

1 stop8h 02m

$277

OntarioNew York

ONT - LGA

ONTLGA

Ontario

Sun 12/14

10:35 am-9:55 pm

1 stop8h 20m

New York LaGuardia

Wed 12/17

7:15 am-2:30 pm

1 stop10h 15m

$286

OntarioNew York

ONT - LGA

ONTLGA

Ontario

Wed 12/3

6:00 am-7:05 pm

2 stops10h 05m

New York LaGuardia

Wed 12/10

9:20 am-4:09 pm

2 stops9h 49m

$296

OntarioNew York

ONT - LGA

ONTLGA

Ontario

Mon 1/12

9:00 pm-9:10 am

2 stops9h 10m

New York LaGuardia

Tue 1/20

6:00 am-4:05 pm

2 stops13h 05m

$296

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/4

Showing 1-10 of 20 results
1
2

Compare providers for flights from Ontario to LaGuardia

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Ontario to LaGuardia in November.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust Score*3 stars
CheapfaremartPrice Accuracy-Trust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Ontario-New York LaGuardia Airport flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Ontario-New York LaGuardia Airport flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Ontario-New York LaGuardia Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Ontario-New York LaGuardia Airport flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Ontario-New York LaGuardia Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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 October 31, 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 52 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, February is the cheapest month in which you can book a flight from Ontario to New York LaGuardia Airport (average of $119). Flying from Ontario to New York LaGuardia Airport in July is currently the most expensive (average of $262). 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 November 6, 2025.

A simple way to save on the total cost of your ticket is to fly from Ontario to New York LaGuardia Airport at noon. If you’re flexible enough to do this you can expect to save up to 50% on your trip compared to booking a flight in the morning.

How much does it cost to fly round-trip from Ontario to New York LaGuardia Airport?

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 November 6, 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
4,241 reviews

Crew

8.6

Entertainment

7.5

Overall

8.0

Boarding

8.1

Comfort

8.0

Food

7.0

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
4,241 reviews
Southwest
8.0
Very good
4,241 reviews

Crew

8.6

Entertainment

7.5

Overall

8.0

Boarding

8.1

Comfort

8.0

Food

7.0

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
7.9
Good
8,001 reviews
Southwest
8.0
Very good
4,241 reviews

Crew

8.6

Entertainment

7.5

Overall

8.0

Boarding

8.1

Comfort

8.0

Food

7.0

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
9,007 reviews
Southwest
8.0
Very good
4,241 reviews

Crew

8.6

Entertainment

7.5

Overall

8.0

Boarding

8.1

Comfort

8.0

Food

7.0

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
11,040 reviews
Southwest
8.0
Very good
4,241 reviews

Crew

8.6

Entertainment

7.5

Overall

8.0

Boarding

8.1

Comfort

8.0

Food

7.0

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
3,115 reviews
Southwest
8.0
Very good
4,241 reviews

Crew

8.6

Entertainment

7.5

Overall

8.0

Boarding

8.1

Comfort

8.0

Food

7.0

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.

  • How long is the flight from Ontario to New York LaGuardia Airport?

    A quick flight from Ontario to New York LaGuardia Airport can take about 6h 56m. Southwest provides one of the quickest options available for as low as $252. Ontario and New York LaGuardia Airport are separated by a distance of 2417 mi. This flight may include one or multiple stops.

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

    According to our current data, Frontier ($128), American Airlines ($222), and United Airlines ($246) offers the cheapest pricing from Ontario to New York LaGuardia Airport. Frontier is 68% 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, February is the cheapest month in which you can book a flight from Ontario to New York LaGuardia Airport (average of $119). Flying from Ontario to New York LaGuardia Airport in July is currently the most expensive (average of $262). 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
Mahwah
Yonkers
Ronkonkoma
Secaucus
North Bergen
Elizabeth
Stamford
East Rutherford
Staten Island
Edgewater
New Brunswick
Seaside Heights
Absecon
Carle Place
Parsippany
Avenel
Paterson
Milford

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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 November 6, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$128Average$189FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$222Average$402FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$246Average$439FlexibilityNo cancel feeOn-time69%
DeltaCheapest$262Average$380FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$266Average$406FlexibilityNo cancel feeOn-time63%

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