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$111+ Cheap flights from LaGuardia, NY (LGA) to Ontario (ONT)

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 4/4. Fares are subject to change and may not be available on all flights or dates of travel.
LGA — ONT
Feb 25 — Mar 41
Tue 2/25
Tue 3/4
1 adult, Economy
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The best prices from New York LaGuardia to Ontario are usually found in April or March, booked 36 days in advance, depart on a Thursday or Sunday and return on a Tuesday

Cheap flight deals from LaGuardia to Ontario

Discover tips and strategies to find the most affordable flight options for your journey from LaGuardia (LGA) to Ontario (ONT). 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 February 20, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$190
(Frontier)

One-way from

$111
(Frontier)

Popular in

December

Cheapest in

April

Average price

$355
Provider with most accurate pricing for New York LaGuardia-Ontario flight deals.
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Provider most trusted by Cheapflights users for New York LaGuardia-Ontario flights.
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From New York LaGuardia to Ontario
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One-way flight from New York LaGuardia to Ontario
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Highest demand for flights based on searches. 19% potential increase in price ($82 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($12 potential savings vs. average RT price).
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Average for round-trip flights in February 2025
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Find flight deals from LaGuardia to Ontario

Cheapest flights from LaGuardia to Ontario
Explore the most affordable flight options available from LaGuardia to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 20, 2025.

This Frontier deal was found by Cheapflights users on 2/20. 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 4/310:59 pmLGA - ONT
1 stop12h 20mFrontier
Sun 4/68:29 amONT - LGA
1 stop10h 31mFrontier
Deal found 2/20$190
This American Airlines deal was found by Cheapflights users on 2/20. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/225:06 pmLGA - ONT
1 stop8h 04mAmerican Airlines
Wed 5/146:01 amONT - LGA
1 stop7h 03mAmerican Airlines
Deal found 2/20$277
This United Airlines deal was found by Cheapflights users on 2/20. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/22:00 pmLGA - ONT
1 stop11h 00mUnited Airlines
Tue 5/66:08 amONT - LGA
1 stop7h 24mUnited Airlines
Deal found 2/20$278
This Delta deal was found by Cheapflights users on 2/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/11:55 pmLGA - ONT
2 stops13h 01mDelta
Mon 4/712:42 pmONT - LGA
1 stop7h 58mDelta
Deal found 2/20$292
This Southwest deal was found by Cheapflights users on 2/20. 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.
Fri 4/42:00 pmLGA - ONT
2 stops10h 10mSouthwest
Tue 4/81:05 pmONT - LGA
1 stop7h 20mSouthwest
Deal found 2/20$323

Find flights from LaGuardia to Ontario within your budget

Customize your flight search to find flights from LaGuardia to Ontario 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 February 20, 2025.

Fly from

LaGuardia

Fly to

Ontario

Route

Depart

Return

Price

New YorkOntario

LGA - ONT

LGAONT

New York LaGuardia

Thu 4/3

10:59 pm-8:19 am

1 stop12h 20m

Ontario

Sun 4/6

8:29 am-10:00 pm

1 stop10h 31m

$190

New YorkOntario

LGA - ONT

LGAONT

New York LaGuardia

Tue 4/22

5:06 pm-10:10 pm

1 stop8h 04m

Ontario

Wed 5/14

6:01 am-4:04 pm

1 stop7h 03m

$277

New YorkOntario

LGA - ONT

LGAONT

New York LaGuardia

Fri 5/2

2:00 pm-10:00 pm

1 stop11h 00m

Ontario

Tue 5/6

6:08 am-4:32 pm

1 stop7h 24m

$278

New YorkOntario

LGA - ONT

LGAONT

New York LaGuardia

Tue 4/1

1:55 pm-11:56 pm

2 stops13h 01m

Ontario

Mon 4/7

12:42 pm-11:40 pm

1 stop7h 58m

$292

New YorkOntario

LGA - ONT

LGAONT

New York LaGuardia

Fri 4/4

2:00 pm-9:10 pm

2 stops10h 10m

Ontario

Tue 4/8

1:05 pm-11:25 pm

1 stop7h 20m

$323

New YorkOntario

LGA - ONT

LGAONT

New York LaGuardia

Fri 4/4

10:59 pm-7:39 am

1 stop11h 40m

$111

New YorkOntario

LGA - ONT

LGAONT

New York LaGuardia

Sat 4/19

7:00 am-12:16 pm

1 stop8h 16m

$139

New YorkOntario

LGA - ONT

LGAONT

New York LaGuardia

Thu 3/13

1:00 pm-8:53 pm

1 stop10h 53m

$144

New YorkOntario

LGA - ONT

LGAONT

New York LaGuardia

Tue 2/25

8:35 am-6:58 pm

1 stop13h 23m

$160

New YorkOntario

LGA - ONT

LGAONT

New York LaGuardia

Sat 5/24

3:25 pm-10:51 pm

1 stop10h 26m

$185

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/20

Showing 1-10 of 12 results
1
2

Compare providers for flights from LaGuardia to Ontario

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 LaGuardia to Ontario in February.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
MytripPrice Accuracy3 starsTrust Score*3 stars

*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 New York LaGuardia Airport-Ontario flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on New York LaGuardia Airport-Ontario flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from New York LaGuardia Airport-Ontario flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on New York LaGuardia Airport-Ontario flights, Cheapflights users trust FlightHub the most. FlightHub 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 New York LaGuardia Airport-Ontario 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 LaGuardia to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from LaGuardia 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.

Travel insights for flights from LaGuardia to Ontario

Get recent, data-driven insights about flights from LaGuardia to Ontario including ideal travel times, pricing trends, and more.

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

Use this chart to determine the optimal time to book a round-trip flight from LaGuardia to Ontario. Price data was last updated on February 14, 2025.

The best time to book flights from New York LaGuardia Airport to Ontario is 36 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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

Currently, August is the cheapest month in which you can book a flight from New York LaGuardia Airport to Ontario (average of $246). Flying from New York LaGuardia Airport to Ontario in March is currently the most expensive (average of $315). 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 LGA to ONT?

Find hourly flight availability from LaGuardia to Ontario. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated February 20, 2025.

When flying from New York LaGuardia Airport to Ontario, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 32% versus a flight in the afternoon.

What is the cheapest day to fly from New York LaGuardia Airport to Ontario?

Use this chart to determine the cheapest time to fly round-trip from LaGuardia to Ontario. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their New York LaGuardia Airport to Ontario flight should consider departing on Wednesday evenings when fares are most often at their lowest. Saturday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

Rainfall in Ontario by month

Plan your trip to Ontario by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Ontario ranges from 0.1 - 3.4 inches per month. February is typically the wettest month, when rainfall can reach 3.4 in. June is typically the driest time to visit Ontario when rainfall is around 0.1 in.

Temperature in Ontario by month

Plan your trip to Ontario by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Ontario, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 78.8 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 53.6 F).

Reviews of airlines servicing Ontario

Get insights into the airlines that provide service to Ontario. 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 Ontario. Reviews last updated February 20, 2025.
Read through reviews of airlines operating flights from New York to Ontario, such as Southwest, Alaska Airlines and Delta. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
4,411 reviews

Comfort

8.1

Food

7.1

Entertainment

7.6

Overall

8.1

Crew

8.7

Boarding

8.2

Reviews

1 / 20

8.0
Excellent

Christine,Aug 2024

DEN - LGB

No issues. I needed pre boarding and I was able to get it without issue

Southwest
8.1
Very good
4,411 reviews
Southwest
8.1
Very good
4,411 reviews

Comfort

8.1

Food

7.1

Entertainment

7.6

Overall

8.1

Crew

8.7

Boarding

8.2

Reviews

1 / 20

8.0
Excellent

Christine,Aug 2024

DEN - LGB

No issues. I needed pre boarding and I was able to get it without issue

Alaska Airlines
8.0
Very good
9,692 reviews
Southwest
8.1
Very good
4,411 reviews

Comfort

8.1

Food

7.1

Entertainment

7.6

Overall

8.1

Crew

8.7

Boarding

8.2

Reviews

1 / 20

8.0
Excellent

Christine,Aug 2024

DEN - LGB

No issues. I needed pre boarding and I was able to get it without issue

Delta
8.0
Very good
8,220 reviews
Southwest
8.1
Very good
4,411 reviews

Comfort

8.1

Food

7.1

Entertainment

7.6

Overall

8.1

Crew

8.7

Boarding

8.2

Reviews

1 / 20

8.0
Excellent

Christine,Aug 2024

DEN - LGB

No issues. I needed pre boarding and I was able to get it without issue

United Airlines
7.4
Good
8,766 reviews
Southwest
8.1
Very good
4,411 reviews

Comfort

8.1

Food

7.1

Entertainment

7.6

Overall

8.1

Crew

8.7

Boarding

8.2

Reviews

1 / 20

8.0
Excellent

Christine,Aug 2024

DEN - LGB

No issues. I needed pre boarding and I was able to get it without issue

American Airlines
7.2
Good
10,000 reviews
Southwest
8.1
Very good
4,411 reviews

Comfort

8.1

Food

7.1

Entertainment

7.6

Overall

8.1

Crew

8.7

Boarding

8.2

Reviews

1 / 20

8.0
Excellent

Christine,Aug 2024

DEN - LGB

No issues. I needed pre boarding and I was able to get it without issue

Related info for your journey

Find useful and relevant information for your journey from LaGuardia to Ontario. 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 into for flights to Ontario from New York LaGuardia?

    Located just 3.1 mi from the city center, Ontario is the airport most travelers will use when flying to Ontario from New York LaGuardia. Booking flights from New York LaGuardia to Ontario (ONT) should be relatively easy as there are 0 daily inbound flights from New York LaGuardia from 5 different airlines.

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

    Frontier, at $190, was found to be the cheapest airline from New York LaGuardia Airport to Ontario.Alternate airlines to your destination round-trip include American Airlines and United Airlines. Frontier is currently priced 45% below the average price you’ll pay for this route.

  • What are the cheapest airlines to fly from New York LaGuardia Airport to Ontario one-way?

    The cheapest airline one-way is Frontier, with whom users have recently found tickets for as low as $111. However, be on the lookout for offers from Delta and American Airlines, as they are both options that can get you from New York LaGuardia Airport to Ontario for a low price.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from LaGuardia to Ontario 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 New York LaGuardia Airport to Ontario?

    Currently, August is the cheapest month in which you can book a flight from New York LaGuardia Airport to Ontario (average of $246). Flying from New York LaGuardia Airport to Ontario in March is currently the most expensive (average of $315). 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

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Alternative routes for LaGuardia to Ontario

See prices for flight routes from nearby airports that may be better suited for you.
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Top 5 airlines flying from LaGuardia to Ontario

Discover the top 5 airlines that operate flights from LaGuardia to Ontario. 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 February 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$158Average$254FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$227Average$536FlexibilityNo cancel feeOn-time69%
DeltaCheapest$256Average$331FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$266Average$379FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$286Average$447FlexibilityNo cancel feeOn-time63%
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