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

Frontier, at $223, was found to be the cheapest airline from New York LaGuardia Airport to Ontario.Alternate airlines to your destination round-trip include Southwest and Delta. Frontier is currently priced 36% 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 $112. However, be on the lookout for offers from American Airlines and Delta, as they are both options that can get you from New York LaGuardia Airport to Ontario for a low price.

What are the most popular airlines that fly from New York LaGuardia Airport to Ontario?

American Airlines, Delta and Frontier are the most popular airlines when flying from New York LaGuardia Airport to Ontario.

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

Departing on a Wednesday is a good option for securing a great price. You can expect to save up to 36% when planning your travel around this day of the week.

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

When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 31 days in advance, which can save you up to 76% on flights from New York LaGuardia Airport to Ontario compared to booking the week you need them. Waiting 31 days out may not be for everyone, so we have options available for flights within the next two weeks, with the lowest price starting at $410. For sooner than that we have options available in the next 3 days from $654.

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

Flights from New York LaGuardia Airport to Ontario lean towards being more expensive in December. Prices are generally better when you fly from New York LaGuardia Airport to Ontario in September, with the cheapest ticket starting at $140.

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.

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.

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.

$112+ Flights from New York LaGuardia Airport, NY to Ontario

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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”

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We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

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Cheapflights Tip: The best prices from New York LaGuardia to Ontario are usually found in April or June, booked 24 days in advance, depart on a Thursday or Sunday and return on a Tuesday

Cheap flight deals from LaGuardia to Ontario

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$223 (Trip.com)
One-way from	$112 (Trip.com)
Popular in	December
Cheapest in	April
Average price	$296

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.

Search Deals

From New York LaGuardia to Ontario

Search Deals

One-way flight from New York LaGuardia to Ontario

Search Deals

Highest demand for flights based on searches. 17% potential increase in price ($76 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease ($11 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in March 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 March 25, 2025.

Thu 4/1710:59 pmLGA - ONT

1 stop20h 52mFrontier

Mon 4/216:03 pmONT - LGA

1 stop24h 57mFrontier

Deal found 3/25

$223

Wed 4/165:30 pmLGA - ONT

1 stop7h 45mSouthwest

Wed 4/231:05 pmONT - LGA

1 stop7h 20mSouthwest

Deal found 3/24

$267

Sat 4/195:00 pmLGA - ONT

1 stop8h 36mDelta

Mon 4/2810:15 pmONT - LGA

1 stop8h 24mDelta

Deal found 3/24

$276

Thu 4/241:00 pmLGA - ONT

1 stop10h 59mAmerican Airlines

Mon 4/2811:59 pmONT - LGA

1 stop8h 31mAmerican Airlines

Deal found 3/24

$277

Tue 9/167:00 amLGA - ONT

1 stop8h 33mUnited Airlines

Tue 9/235:45 amONT - LGA

1 stop6h 57mUnited Airlines

Deal found 3/24

$367

Wed 4/236:00 amLGA - ONT

2 stops12h 32mAlaska Airlines

Wed 4/306:00 amONT - LGA

2 stops12h 47mAlaska Airlines

Deal found 3/24

$493

Best flights from LaGuardia to Ontario
Discover carefully curated flight deals from LaGuardia to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 25, 2025.

Thu 4/1710:59 pmLGA - ONT

1 stop20h 52mFrontier

Mon 4/216:03 pmONT - LGA

1 stop24h 57mFrontier

Deal found 3/25

$223

Wed 4/165:30 pmLGA - ONT

1 stop7h 45mSouthwest

Wed 4/231:05 pmONT - LGA

1 stop7h 20mSouthwest

Deal found 3/24

$267

Sat 4/195:00 pmLGA - ONT

1 stop8h 36mDelta

Mon 4/2810:15 pmONT - LGA

1 stop8h 24mDelta

Deal found 3/24

$276

Thu 4/241:00 pmLGA - ONT

1 stop10h 59mAmerican Airlines

Mon 4/2811:59 pmONT - LGA

1 stop8h 31mAmerican Airlines

Deal found 3/24

$277

Tue 9/167:00 amLGA - ONT

1 stop8h 33mUnited Airlines

Tue 9/235:45 amONT - LGA

1 stop6h 57mUnited Airlines

Deal found 3/24

$367

Wed 4/236:00 amLGA - ONT

2 stops12h 32mAlaska Airlines

Wed 4/306:00 amONT - LGA

2 stops12h 47mAlaska Airlines

Deal found 3/24

$493

Last-minute flights from LaGuardia to Ontario
Discover last-minute flight deals from LaGuardia to Ontario. Data last updated March 25, 2025 and is based on user searches.

Sun 3/303:59 pmLGA - ONT

1 stop10h 55mAmerican Airlines

Mon 3/3111:59 pmONT - LGA

1 stop7h 36mAmerican Airlines

Deal found 3/24

$485

Mon 3/3110:59 pmLGA - ONT

1 stop15h 38mFrontier

Sat 4/58:39 amONT - LGA

1 stop10h 21mFrontier

Deal found 3/24

$278

Wed 4/25:00 pmLGA - ONT

1 stop8h 43mDelta

Mon 4/75:15 pmONT - LGA

2 stops14h 28mDelta

Deal found 3/25

$388

Wed 4/23:40 pmLGA - ONT

2 stops10h 00mSouthwest

Mon 4/79:55 pmONT - LGA

2 stops8h 10mSouthwest

Deal found 3/23

$423

Thu 4/32:00 pmLGA - ONT

1 stop10h 58mUnited Airlines

Tue 4/85:00 amONT - LGA

1 stop9h 29mUnited Airlines

Deal found 3/24

$383

Fri 4/412:00 pmLGA - ONT

2 stops14h 59mAlaska Airlines

Sat 4/56:00 amONT - LGA

2 stops12h 47mAlaska Airlines

Deal found 3/24

$789

Tue 4/153:45 pmLGA - ONT

1 stop9h 13mUnited Airlines

Tue 4/221:35 pmONT - LGA

1 stop6h 55mUnited Airlines

Deal found 3/24

$367

Wed 4/165:30 pmLGA - ONT

1 stop7h 45mSouthwest

Wed 4/231:05 pmONT - LGA

1 stop7h 20mSouthwest

Deal found 3/24

$267

Thu 4/1710:59 pmLGA - ONT

1 stop20h 52mFrontier

Mon 4/216:03 pmONT - LGA

1 stop24h 57mFrontier

Deal found 3/25

$223

Sat 4/195:00 pmLGA - ONT

1 stop8h 36mDelta

Mon 4/2810:15 pmONT - LGA

1 stop8h 24mDelta

Deal found 3/24

$276

Wed 4/236:00 amLGA - ONT

2 stops12h 32mAlaska Airlines

Wed 4/306:00 amONT - LGA

2 stops12h 47mAlaska Airlines

Deal found 3/24

$493

Thu 4/241:00 pmLGA - ONT

1 stop10h 59mAmerican Airlines

Mon 4/2811:59 pmONT - LGA

1 stop8h 31mAmerican Airlines

Deal found 3/24

$277

One-way flights from LaGuardia to Ontario
Search for one-way flight options from LaGuardia to Ontario. Find affordable one-way fares based on user searches. Data last updated March 25, 2025.

Sun 4/2710:50 pmLGA - ONT

1 stop21h 34mFrontier

Deal found 3/25

$112

Wed 4/1611:56 amLGA - ONT

1 stop10h 02mMultiple Airlines

Deal found 3/25

$124

Wed 4/236:50 pmLGA - ONT

1 stop8h 00mAmerican Airlines

Deal found 3/24

$134

Tue 4/155:00 pmLGA - ONT

1 stop8h 36mDelta

Deal found 3/25

$139

Sat 5/243:25 pmLGA - ONT

1 stop10h 01mUnited Airlines

Deal found 3/24

$179

Mon 5/193:40 pmLGA - ONT

2 stops10h 20mSouthwest

Deal found 3/24

$219

Wed 4/912:00 pmLGA - ONT

2 stops14h 59mAlaska Airlines

Deal found 3/25

$305

Cheapflights Fare Finder

Use the filters below to find and compare flights from New York LaGuardia Airport to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

New YorkOntario

LGA - ONT

LGAONT

New York LaGuardia

Thu 4/17

10:59 pm-4:51 pm

1 stop20h 52m

Ontario

Mon 4/21

6:03 pm-10:00 pm

1 stop24h 57m

$223

New YorkOntario

LGA - ONT

LGAONT

New York LaGuardia

Wed 4/16

5:30 pm-10:15 pm

1 stop7h 45m

Ontario

Wed 4/23

1:05 pm-11:25 pm

1 stop7h 20m

$267

New YorkOntario

LGA - ONT

LGAONT

New York LaGuardia

Sat 4/19

5:00 pm-10:36 pm

1 stop8h 36m

Ontario

Mon 4/28

10:15 pm-9:39 am

1 stop8h 24m

$276

New YorkOntario

LGA - ONT

LGAONT

New York LaGuardia

Thu 4/24

1:00 pm-8:59 pm

1 stop10h 59m

Ontario

Mon 4/28

11:59 pm-11:30 am

1 stop8h 31m

$277

New YorkOntario

LGA - ONT

LGAONT

New York LaGuardia

Tue 9/16

7:00 am-12:33 pm

1 stop8h 33m

Ontario

Tue 9/23

5:45 am-3:42 pm

1 stop6h 57m

$367

New YorkOntario

LGA - ONT

LGAONT

New York LaGuardia

Wed 4/23

6:00 am-3:32 pm

2 stops12h 32m

Ontario

Wed 4/30

6:00 am-9:47 pm

2 stops12h 47m

$493

New YorkOntario

LGA - ONT

LGAONT

New York LaGuardia

Sun 4/27

10:50 pm-5:24 pm

1 stop21h 34m

$112

New YorkOntario

LGA - ONT

LGAONT

New York LaGuardia

Wed 4/16

11:56 am-6:58 pm

1 stop10h 02m

$124

New YorkOntario

LGA - ONT

LGAONT

New York LaGuardia

Wed 4/23

6:50 pm-11:50 pm

1 stop8h 00m

$134

New YorkOntario

LGA - ONT

LGAONT

New York LaGuardia

Tue 4/15

5:00 pm-10:36 pm

1 stop8h 36m

$139

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/25

Showing 1-10 of 13 results

Compare providers for flights from LaGuardia to Ontario

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from LaGuardia to Ontario in March.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy1 star	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*3 stars
eDreams	Price Accuracy3 stars	Trust Score*3 stars
Mytrip	Price Accuracy3 stars	Trust 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.

Cheapflights Insights

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

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

The best time to book flights from New York LaGuardia Airport to Ontario is 24 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 $324). 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?

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?

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

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

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

Read through reviews of airlines operating flights from New York to Ontario, such as Alaska Airlines, Southwest and Delta. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Alaska Airlines

8.0

Very good

9,782 reviews

Reviews

1 / 20

10.0

Excellent

Seleste,Dec 2024

FAT - SAN

The attention and efficiency of the staff and the good handling of the pilot

Alaska Airlines

8.0

Very good

9,782 reviews

Alaska Airlines

8.0

Very good

9,782 reviews

Reviews

1 / 20

10.0

Excellent

Seleste,Dec 2024

FAT - SAN

The attention and efficiency of the staff and the good handling of the pilot

Southwest

8.0

Very good

4,272 reviews

Alaska Airlines

8.0

Very good

9,782 reviews

Reviews

1 / 20

10.0

Excellent

Seleste,Dec 2024

FAT - SAN

The attention and efficiency of the staff and the good handling of the pilot

Delta

8.0

Very good

7,890 reviews

Alaska Airlines

8.0

Very good

9,782 reviews

Reviews

1 / 20

10.0

Excellent

Seleste,Dec 2024

FAT - SAN

The attention and efficiency of the staff and the good handling of the pilot

United Airlines

7.4

Good

8,605 reviews

Alaska Airlines

8.0

Very good

9,782 reviews

Reviews

1 / 20

10.0

Excellent

Seleste,Dec 2024

FAT - SAN

The attention and efficiency of the staff and the good handling of the pilot

American Airlines

7.2

Good

10,000 reviews

Alaska Airlines

8.0

Very good

9,782 reviews

Reviews

1 / 20

10.0

Excellent

Seleste,Dec 2024

FAT - SAN

The attention and efficiency of the staff and the good handling of the pilot

Related info for your journey

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 $223, was found to be the cheapest airline from New York LaGuardia Airport to Ontario.Alternate airlines to your destination round-trip include Southwest and Delta. Frontier is currently priced 36% 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 $112. However, be on the lookout for offers from American Airlines and Delta, 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 $324). 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

Browse thousands of different options on Cheapflights for your next trip

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Other flights to Ontario

Top 5 airlines flying from LaGuardia to Ontario

Airline	Cheapest	Average	Flexibility	On-time
Frontier	Cheapest$158	Average$256	FlexibilityNo cancel fee	On-time62%
United Airlines	Cheapest$227	Average$536	FlexibilityNo cancel fee	On-time69%
Delta	Cheapest$256	Average$338	FlexibilityNo cancel fee	On-timeN/A
American Airlines	Cheapest$266	Average$388	FlexibilityNo cancel fee	On-time71%
Southwest	Cheapest$286	Average$447	FlexibilityNo cancel fee	On-time63%

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$112+ 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 4/27. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from LaGuardia to Ontario with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheapflights Tip: The best prices from New York LaGuardia to Ontario are usually found in April or June, booked 24 days in advance, depart on a Thursday or Sunday and return on a Tuesday

Cheap flight deals from LaGuardia to Ontario

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from LaGuardia to Ontario

Cheapest flights from LaGuardia to OntarioExplore 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 March 25, 2025.

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 March 25, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from New York LaGuardia Airport to Ontario that are best for you.

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 March.

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.

Cheapflights Insights

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

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 March 21, 2025.

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

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 March 25, 2025.

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.

Rainfall in Ontario by month

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

Temperature in Ontario by month

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

Reviews of airlines servicing Ontario

Read through reviews of airlines operating flights from New York to Ontario, such as Alaska Airlines, Southwest and Delta. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

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?

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

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

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

How can I find direct flights from LaGuardia to Ontario?

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

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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for LaGuardia to Ontario

See prices for flight routes from nearby airports that may be better suited for you.

Top 5 airlines flying from LaGuardia to Ontario

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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 March 25, 2025.