HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Ontario

Cheap flights to Ontario, CA - Compare and Save

— ONT
Apr 30 — May 71
Thu 4/30
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Flights to Ontario in 2026

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 March 31, 2026.

Popular in

December

Cheapest in

January

Average price

$386

Round-trip from

$205

One-way from

$80

Good round-trip deal

$294 or less

Good one-way deal

$163 or less
Highest demand for flights based on searches. 2% potential increase in price ($8 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($9 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 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

Find flight deals to Ontario

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 March 31, 2026.

This Frontier deal was found by Cheapflights users on 3/29. 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.
Wed 5/131:30 pm
EWR
-
ONT
1 stop8h 41m
Frontier
Fri 6/126:47 pm
ONT
-
EWR
1 stop14h 43m
Frontier
Deal found 3/29$225
This Frontier deal was found by Cheapflights users on 3/26. 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 5/141:30 pm
EWR
-
ONT
1 stop8h 41m
Frontier
Tue 6/236:47 pm
ONT
-
EWR
1 stop14h 43m
Frontier
Deal found 3/26$230
This Kiwi.com deal was found by Cheapflights users on 3/31. 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 4/282:55 pm
EWR
-
ONT
1 stop22h 49m
Multiple Airlines
Tue 5/58:06 pm
ONT
-
EWR
1 stop12h 14m
Multiple Airlines
Deal found 3/31$231
This Frontier deal was found by Cheapflights users on 3/31. 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 5/291:30 pm
EWR
-
ONT
1 stop8h 41m
Frontier
Thu 6/186:47 pm
ONT
-
EWR
1 stop14h 43m
Frontier
Deal found 3/31$236
This Kiwi.com deal was found by Cheapflights users on 3/30. 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 4/158:00 am
EWR
-
ONT
1 stop13h 49m
Multiple Airlines
Fri 4/1711:44 am
ONT
-
EWR
1 stop15h 46m
Multiple Airlines
Deal found 3/30$240
This Kiwi.com deal was found by Cheapflights users on 3/31. 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 4/282:55 pm
EWR
-
ONT
1 stop22h 49m
Multiple Airlines
Tue 5/58:17 pm
ONT
-
EWR
2 stops13h 13m
Multiple Airlines
Deal found 3/31$243
This Frontier deal was found by Cheapflights users on 3/29. 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 5/141:30 pm
EWR
-
ONT
1 stop8h 41m
Frontier
Wed 6/106:47 pm
ONT
-
EWR
1 stop14h 43m
Frontier
Deal found 3/29$250
This Frontier deal was found by Cheapflights users on 3/31. 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 6/11:30 pm
EWR
-
ONT
1 stop8h 41m
Frontier
Mon 6/156:47 pm
ONT
-
EWR
1 stop14h 43m
Frontier
Deal found 3/31$251
This Expedia deal was found by Cheapflights users on 3/31. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/291:30 pm
EWR
-
ONT
1 stop8h 41m
Frontier
Tue 6/96:47 pm
ONT
-
EWR
1 stop14h 43m
Frontier
Deal found 3/31$255
This Frontier deal was found by Cheapflights users on 3/31. 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 5/291:30 pm
EWR
-
ONT
1 stop8h 41m
Frontier
Tue 6/166:47 pm
ONT
-
EWR
1 stop14h 43m
Frontier
Deal found 3/31$256
This American Airlines deal was found by Cheapflights users on 3/26. 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 4/1411:00 am
JFK
-
ONT
2 stops10h 24m
American Airlines
Sat 4/1811:59 pm
ONT
-
JFK
1 stop8h 35m
American Airlines
Deal found 3/26$262
This CheapOair deal was found by Cheapflights users on 3/31. 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.
Sun 4/1210:00 pm
LGA
-
ONT
1 stop28h 56m
Frontier
Wed 4/158:15 am
ONT
-
LGA
1 stop10h 49m
Frontier
Deal found 3/31$262

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 March 31, 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

LGA - ONT

LGAONT

New York LaGuardia

Wed 4/29

1:55 pm-11:44 pm

2 stops12h 49m

Ontario

Mon 5/4

10:15 pm-3:48 pm

2 stops14h 33m

$267

New YorkOntario

JFK - ONT

JFKONT

New York John F Kennedy Intl

Sat 4/18

2:55 pm-9:00 pm

1 stop9h 05m

Ontario

Sat 4/25

12:49 pm-12:48 am

1 stop8h 59m

$281

New YorkOntario

JFK - ONT

JFKONT

New York John F Kennedy Intl

Sat 4/18

2:55 pm-9:00 pm

1 stop9h 05m

Ontario

Sat 4/25

12:49 pm-12:48 am

1 stop8h 59m

$308

New YorkOntario

LGA - ONT

LGAONT

New York LaGuardia

Fri 4/24

4:00 pm-9:00 pm

1 stop8h 00m

Ontario

Mon 4/27

10:15 pm-8:39 am

1 stop7h 24m

$308

New YorkOntario

LGA - ONT

LGAONT

New York LaGuardia

Wed 4/15

3:20 pm-10:31 pm

1 stop10h 11m

Ontario

Sat 4/18

5:10 am-3:50 pm

1 stop7h 40m

$315

New YorkOntario

LGA - ONT

LGAONT

New York LaGuardia

Wed 4/15

4:29 pm-10:31 pm

1 stop9h 02m

Ontario

Sat 4/18

5:10 am-3:50 pm

1 stop7h 40m

$315

New YorkOntario

LGA - ONT

LGAONT

New York LaGuardia

Wed 4/15

1:59 pm-9:00 pm

1 stop10h 01m

Ontario

Sat 4/18

6:00 am-7:01 pm

2 stops10h 01m

$325

New YorkOntario

LGA - ONT

LGAONT

New York LaGuardia

Fri 4/24

8:55 am-4:25 pm

2 stops10h 30m

Ontario

Mon 4/27

8:00 am-8:25 pm

2 stops9h 25m

$327

New YorkOntario

JFK - ONT

JFKONT

New York John F Kennedy Intl

Thu 4/30

4:29 pm-11:59 pm

1 stop10h 30m

Ontario

Sat 5/9

10:39 am-10:59 pm

1 stop9h 20m

$359

New YorkOntario

LGA - ONT

LGAONT

New York LaGuardia

Thu 4/16

3:50 pm-9:50 pm

1 stop9h 00m

Ontario

Fri 4/17

6:05 am-7:07 pm

1 stop10h 02m

$369

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/29

Showing 1-10 of 60 resultsSorted by cheapest first
1
2
3
...
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 March.
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*2 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: 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?

Use this chart to determine the optimal time to book a round-trip flight from New York to Ontario. Price data was last updated on March 13, 2026.

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 51 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 30 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).

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 March 31, 2026.
Peruse reviews from past customers who have flown Southwest,Delta, andJetBlue 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
8.0
Very good
4,334 reviews

Overall

8.0

Boarding

8.1

Crew

8.6

Food

7.0

Entertainment

7.5

Comfort

8.0

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
8.0
Very good
4,334 reviews
Southwest
8.0
Very good
4,334 reviews

Overall

8.0

Boarding

8.1

Crew

8.6

Food

7.0

Entertainment

7.5

Comfort

8.0

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
8,363 reviews
Southwest
8.0
Very good
4,334 reviews

Overall

8.0

Boarding

8.1

Crew

8.6

Food

7.0

Entertainment

7.5

Comfort

8.0

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
7.2
Good
2,906 reviews
Southwest
8.0
Very good
4,334 reviews

Overall

8.0

Boarding

8.1

Crew

8.6

Food

7.0

Entertainment

7.5

Comfort

8.0

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
11,542 reviews
Southwest
8.0
Very good
4,334 reviews

Overall

8.0

Boarding

8.1

Crew

8.6

Food

7.0

Entertainment

7.5

Comfort

8.0

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
5.7
Fair
3,008 reviews
Southwest
8.0
Very good
4,334 reviews

Overall

8.0

Boarding

8.1

Crew

8.6

Food

7.0

Entertainment

7.5

Comfort

8.0

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 $37, while round-trip flights cost around $29.

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

    A round-trip flight to Ontario will typically cost around $135, however they can be found for as little as $29.

  • 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

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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.
Site
©2026 Cheapflights