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Ontario

$113+ Cheap flights to Ontario (ONT), CA

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 5/26. Fares are subject to change and may not be available on all flights or dates of travel.
— ONT
Jun 6 — Jun 131
Sat 6/6
Sat 6/13
1 adult, Economy
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Flights to Ontario in 2026

Cheapest flights to Ontario
Explore the most affordable flight options available to Ontario. Find the lowest fares based on data from user searches, with prices last updated on May 7, 2026.

This Delta deal was found by Cheapflights users on 5/3. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/291:55 pm
LGA
-
ONT
2 stops12h 39m
Delta
Sat 5/307:05 am
ONT
-
LGA
2 stops11h 53m
Delta
Deal found 5/3$287
This American Airlines deal was found by Cheapflights users on 5/3. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/246:59 am
JFK
-
ONT
1 stop8h 06m
American Airlines
Thu 5/2810:22 am
ONT
-
JFK
1 stop9h 07m
American Airlines
Deal found 5/3$292
This Super.com deal was found by Cheapflights users on 5/3. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/117:30 pm
JFK
-
ONT
Nonstop6h 05m
JetBlue
Tue 8/1811:50 pm
ONT
-
JFK
Nonstop5h 21m
JetBlue
Deal found 5/3$293
This JetBlue deal was found by Cheapflights users on 5/5. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/117:30 pm
JFK
-
ONT
Nonstop6h 05m
JetBlue
Sun 8/1611:50 pm
ONT
-
JFK
Nonstop5h 21m
JetBlue
Deal found 5/5$297
This Delta deal was found by Cheapflights users on 5/3. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/56:00 am
LGA
-
ONT
1 stop7h 42m
Delta
Sun 8/910:00 pm
ONT
-
LGA
1 stop7h 10m
Delta
Deal found 5/3$297
This Delta deal was found by Cheapflights users on 5/6. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/276:06 am
JFK
-
ONT
1 stop9h 13m
Delta
Sat 6/65:45 pm
ONT
-
JFK
1 stop10h 09m
Delta
Deal found 5/6$298
This Southwest deal was found by Cheapflights users on 5/6. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/276:05 am
LGA
-
ONT
1 stop10h 25m
Southwest
Fri 6/512:50 pm
ONT
-
LGA
1 stop7h 05m
Southwest
Deal found 5/6$298
This Booking.com deal was found by Cheapflights users on 5/4. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/11:30 pm
EWR
-
ONT
1 stop8h 41m
Frontier
Sat 8/226:47 pm
ONT
-
EWR
1 stop14h 43m
Frontier
Deal found 5/4$298
This JetBlue deal was found by Cheapflights users on 5/4. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/117:30 pm
JFK
-
ONT
Nonstop6h 05m
JetBlue
Tue 8/2511:50 pm
ONT
-
JFK
Nonstop5h 21m
JetBlue
Deal found 5/4$299
This Kissandfly.com deal was found by Cheapflights users on 5/2. 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 Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/126:00 am
LGA
-
ONT
1 stop7h 57m
Frontier
Tue 6/28:30 am
ONT
-
LGA
1 stop10h 30m
Frontier
Deal found 5/2$299
This Delta deal was found by Cheapflights users on 5/4. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/136:40 pm
JFK
-
ONT
1 stop7h 54m
Delta
Tue 5/261:29 pm
ONT
-
JFK
1 stop7h 26m
Delta
Deal found 5/4$302
This Delta deal was found by Cheapflights users on 5/5. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/126:00 am
LGA
-
ONT
1 stop7h 57m
Delta
Tue 5/1910:00 pm
ONT
-
LGA
1 stop7h 14m
Delta
Deal found 5/5$302

Find flight deals to Ontario

Find the latest flights to Ontario in 2026, with up-to-date prices and availability. In the last 7 days, Cheapflights users made a total of 2,558,603 searches and data was last updated on May 7, 2026.

Popular in

April

Cheapest in

January

Average price

$366

Round-trip from

$259

One-way from

$110

Good round-trip deal

$297 or less

Good one-way deal

$168 or less
Highest demand for flights based on searches. 10% potential increase in price ($43 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($7 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 2026
Search Deals
From New York to Los Angeles
Search Deals
One-way flight from New York to Ontario (ONT)
Search Deals
Price to beat on a round-trip flight from New York to Ontario.
Search Deals
Price to beat on a one-way flight from New York to Ontario.
Search Deals

Cheapflights Fare Finder

 
Locate flights to Ontario that fit your budget, with regularly updated fares and availability. In the last 7 days, Cheapflights users made a total of 2,558,603 searches and data was last updated on May 7, 2026.
Use the filters below to find and compare flights to Ontario that are best for you.

Fly from

Route

Depart

Return

Price

Cheapest round-trip

New YorkOntario

JFK - ONT

JFKONT

New York John F Kennedy Intl

Sat 6/6

5:30 pm-8:47 pm

Nonstop6h 17m

Ontario

Wed 7/29

11:50 pm-8:11 am

Nonstop5h 21m

$297
Quickest round-trip

New YorkOntario

JFK - ONT

JFKONT

New York John F Kennedy Intl

Fri 7/17

7:30 pm-10:35 pm

Nonstop6h 05m

Ontario

Tue 7/28

11:50 pm-8:11 am

Nonstop5h 21m

$327

NewarkOntario

EWR - ONT

EWRONT

Newark

Sat 5/30

4:29 pm-10:45 pm

1 stop9h 16m

Ontario

Sun 5/31

10:00 pm-9:25 am

1 stop8h 25m

$333

New YorkOntario

LGA - ONT

LGAONT

New York LaGuardia

Sat 6/6

11:10 am-5:35 pm

1 stop9h 25m

Ontario

Mon 6/8

11:55 pm-11:15 am

1 stop8h 20m

$339

New YorkOntario

JFK - ONT

JFKONT

New York John F Kennedy Intl

Wed 5/27

7:00 am-3:09 pm

1 stop11h 09m

Ontario

Tue 6/9

7:00 am-7:13 pm

1 stop9h 13m

$359

New YorkOntario

LGA - ONT

LGAONT

New York LaGuardia

Fri 5/29

6:00 am-10:57 am

1 stop7h 57m

Ontario

Mon 6/15

10:00 pm-8:11 am

1 stop7h 11m

$368

New YorkOntario

LGA - ONT

LGAONT

New York LaGuardia

Wed 5/20

7:15 am-3:05 pm

2 stops10h 50m

Ontario

Sun 5/24

7:00 am-10:20 pm

1 stop12h 20m

$373

New YorkOntario

JFK - ONT

JFKONT

New York John F Kennedy Intl

Tue 6/2

5:30 pm-8:47 pm

Nonstop6h 17m

Ontario

Fri 6/19

11:58 pm-8:22 am

Nonstop5h 24m

$377

New YorkOntario

LGA - ONT

LGAONT

New York LaGuardia

Sat 5/30

6:00 am-10:57 am

1 stop7h 57m

Ontario

Mon 6/8

10:00 pm-8:11 am

1 stop7h 11m

$378

New YorkOntario

LGA - ONT

LGAONT

New York LaGuardia

Tue 8/4

1:59 pm-11:34 pm

2 stops12h 35m

Ontario

Tue 8/18

7:05 am-5:50 pm

1 stop7h 45m

$383

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/5

Showing 1-10 of 60 resultsSorted by cheapest first
1
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6

Compare providers for flights 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 to Ontario in May.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
CheapfaremartPrice Accuracy-Trust Score*1 star
CheapflightsfaresPrice Accuracy2 starsTrust 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: Out of all of the providers offering Ontario flight deals, Cheapflights users have found FlightHub to have the most accurate pricing on Cheapflights vs. their site about >95% of the time, users can find the same price on Ontario flight deals on Cheapflights and FlightHub. This is based on searches made for Ontario flights over the past month.
  • Most trusted provider: FlightHub is the most trusted provider by Cheapflights users offering Ontario flight deals. With a user feedback rating of 3 out of 3 stars (3 being the best), FlightHub has received the most positive sentiment from Cheapflights users searching for flights to Ontario. This is based on data collected from Cheapflights searches made over the past month.

Best time to book a flight to Ontario

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

When is the best time to book a flight to Ontario?

The price you pay for your flight to Ontario may vary depending on when you book. For the best chance of a lower fare, look to book 46 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

How long is the flight to Ontario?

On average, a flight from New York to Ontario takes 8 hours 26 minutes. Flights to Ontario from other popular cities in USA will vary in length. Below are a few examples of popular routes and their flight times.

What are the most popular airlines that fly to Ontario?

The most popular airlines flying from New York to Ontario are American Airlines, JetBlue and United Airlines.

Frontier
Frontier
From $27
American Airlines
American Airlines
From $97
Southwest
Southwest
From $97
United Airlines
United Airlines
From $68

What are the cheapest airlines that fly to Ontario?

The cheapest airlines flying from New York to Ontario are Frontier, Delta and American Airlines.

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).

The best insider tips for flights to Ontario

AI-powered summary based on content written by travel experts. AI can make mistakes.
Cheapflights partnered with top experts to bring you the best recommendations for your Ontario trip
Our travel experts
Marisa Garcia

Marisa Garcia

Expert on American Airlines and Frontier

Marisa knows planes inside and out, spending 16 years working on aircraft in hangars at airports around the world. She is an aviation industry expert, specialized in airline interiors and regulations. Ten years ago, she pivoted to journalism. She shares her insights in leading aviation, travel, and business publications and on her site FlightChic.

Read more
Robert Schrader

Robert Schrader

Expert on Alaska Airlines

One of the web's original travel bloggers, Robert launched his first site Leave Your Daily Hell in 2009. Since then, he's expanded into destination niche sites (one each for Japan, Thailand and Taiwan), in addition to having written for the inflight magazines of Singapore Airlines and Korean Air. Overall, he's visited nearly 100 countries, and flies business as often as possible.

Read more
Harriet Baskas

Harriet Baskas

Expert on Delta and United Airlines

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Read more
Daniel Scheffler

Daniel Scheffler

Expert on Spirit Airlines

Daniel Scheffler is a travel writer, podcaster, and producer. Born in Africa, bred in Europe and now living in America he has traveled to 140 countries (and all 50 U.S. states). Plus he has stayed at over 2500 hotels across the globe. His original shows Everywhere and Without Maps (available on Spotify) showcase his beliefs, travel is about humanity and sharing that beauty. And thus it reminds you that you shouldn’t believe everything you think.

Read more
Bill Fink

Bill Fink

Expert on ONT

Bill is an award-winning travel writer with extensive credits covering airlines and the aviation industry for publications including AARP, AFAR, The Points Guy and Yahoo. Based in Portland, Oregon, Bill has traveled to more than 75 countries - and been late for his flight in most of them. He once achieved top-level frequent flier status for all of American, Delta and United Airlines during a single year.

Read more

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 May 7, 2026.
Peruse reviews from past customers who have flown Southwest,Delta, andAmerican Airlines to the United States to help guide your decision. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
7.9
Good
4,303 reviews

Overall

7.9

Crew

8.6

Boarding

8.1

Comfort

8.0

Entertainment

7.5

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Southwest
7.9
Good
4,303 reviews
Southwest
7.9
Good
4,303 reviews

Overall

7.9

Crew

8.6

Boarding

8.1

Comfort

8.0

Entertainment

7.5

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Delta
7.9
Good
8,460 reviews
Southwest
7.9
Good
4,303 reviews

Overall

7.9

Crew

8.6

Boarding

8.1

Comfort

8.0

Entertainment

7.5

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
American Airlines
7.1
Good
11,669 reviews
Southwest
7.9
Good
4,303 reviews

Overall

7.9

Crew

8.6

Boarding

8.1

Comfort

8.0

Entertainment

7.5

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
JetBlue
7.1
Good
2,980 reviews
Southwest
7.9
Good
4,303 reviews

Overall

7.9

Crew

8.6

Boarding

8.1

Comfort

8.0

Entertainment

7.5

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Frontier
5.6
Fair
2,964 reviews
Southwest
7.9
Good
4,303 reviews

Overall

7.9

Crew

8.6

Boarding

8.1

Comfort

8.0

Entertainment

7.5

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.

FAQs about flying to Ontario

Ontario, CA airport overview

At just 2.3 miles (3.7km) east of downtown Ontario, Ontario International Airport (ONT) is a small but well-equipped alternative to Los Angeles Airport and John Wayne Airport for passengers flying to California.

The number of flights to Ontario International Airport has been declining steadily in recent years (there were 4.8 million passengers in 2010, but the terminals are built to handle twice that) – some say due to the lack of direct flights to major destinations, in comparison with other airports nearby. However, those who use the airport agree that it is a convenient alternative, well connected to nearby air fields and towns, easy to get in and out of, clean and with good basic facilities.

  • What airport do you fly into for flights to Ontario?

    If you book a flight to Ontario, you will be flying into Ontario, which is the city’s only airport. Ontario (ONT) is located 3.1 mi from the center of Ontario.

  • Can I find cheaper flights to Ontario if I am willing to have layovers?

    Yes, flights with layovers are often cheaper than direct flights. Keep an eye out for flight deals to Ontario on Cheapflights that require 1 or 2 stops for potential cost savings.

  • What is the best airline to fly to Ontario?

    Based on reviews from Cheapflights users, Frontier is rated the highest out of the airlines that fly to Ontario.

  • What is the cheapest airport to fly to in Ontario?

    Ontario is currently the cheapest airport to fly to in Ontario. One-way flights to Ontario typically cost $24, while round-trip flights cost around $56.

  • How much is a round-trip flight to Ontario?

    A round-trip flight to Ontario will typically cost around $175, however they can be found for as little as $56.

  • Where does the fastest flight to Ontario depart from?

    For those looking to save time traveling to Ontario, Las Vegas Harry Reid Intl offers the quickest one-way flight (1 hour 0 minutes).

  • Does Ontario have rental cars?

    Yes. Those touching down at Ontario can take advantage of the rental car services offered upon their arrival.

  • Are there hotels close to Ontario?

    Yes. Ontario has hotels nearby for those requiring accommodations. Delta Hotels by Marriott Ontario Airport is the closest property to Ontario (0.0 mi away from Ontario).

See more FAQs

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