HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Ontario

$123+ Cheap flights to Ontario

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 2/10. Fares are subject to change and may not be available on all flights or dates of travel.
— ONT
Jan 7 — Jan 141
Tue 1/7
Tue 1/14
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights to Ontario with Cheapflights

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
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.
3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Flights to Ontario in 2025

Find the latest flights to Ontario in 2025, 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 January 2, 2025.

Popular in

December

Cheapest in

January

Average price

$305

Round-trip from

$176

One-way from

$123
High demand for flights, 4% potential price rise
Search Deals
Best time to find cheap flights, 3% potential price drop
Search Deals
Average for round-trip flights in January 2025
Search Deals
From New York to Los Angeles
Search Deals
One-way flight from New York to Ontario (ONT)
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 January 2, 2025.

Thu 1/304:58 pmEWR - ONT
1 stop17h 13mMultiple Airlines
Sun 2/21:50 pmONT - EWR
1 stop13h 00mMultiple Airlines
Deal found 1/2$245
Fri 1/107:59 amJFK - ONT
1 stop26h 15mFrontier
Sun 1/121:52 pmONT - JFK
1 stop13h 38mFrontier
Deal found 1/2$258
Thu 1/235:00 pmLGA - ONT
1 stop9h 58mAmerican Airlines
Sun 1/266:00 amONT - LGA
1 stop7h 04mAmerican Airlines
Deal found 1/1$258
Sat 1/256:29 amJFK - ONT
2 stops10h 22mAmerican Airlines
Sat 2/110:00 amONT - JFK
2 stops8h 59mAmerican Airlines
Deal found 1/1$263
Thu 1/231:15 pmLGA - ONT
2 stops10h 36mUnited Airlines
Sun 1/265:10 amONT - LGA
2 stops9h 02mUnited Airlines
Deal found 1/1$263
Wed 1/810:00 pmLGA - ONT
1 stop12h 56mFrontier
Thu 1/169:02 amONT - LGA
1 stop9h 00mFrontier
Deal found 1/1$268
Tue 3/49:30 amJFK - ONT
2 stops14h 57mMultiple Airlines
Tue 3/112:43 pmONT - JFK
1 stop12h 47mMultiple Airlines
Deal found 1/2$272
Wed 1/226:00 amLGA - ONT
1 stop8h 50mDelta
Tue 1/287:05 amONT - LGA
1 stop7h 09mDelta
Deal found 1/2$277
Sat 2/2210:18 amEWR - ONT
1 stop8h 19mAmerican Airlines
Sat 3/112:50 pmONT - EWR
1 stop6h 56mAmerican Airlines
Deal found 1/2$277
Thu 1/237:10 amJFK - ONT
1 stop11h 15mDelta
Mon 1/271:00 pmONT - JFK
1 stop8h 47mDelta
Deal found 1/2$279
Tue 1/217:00 amEWR - ONT
1 stop8h 26mDelta
Mon 2/31:00 pmONT - EWR
1 stop8h 41mDelta
Deal found 1/2$284
Wed 1/2911:30 amJFK - ONT
1 stop11h 43mAlaska Airlines
Sat 2/111:14 amONT - JFK
1 stop24h 46mAlaska Airlines
Deal found 1/2$285

Find flights to Ontario within your budget

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 January 2, 2025.

Fly from

Any airport

Route

Depart

Return

Price

NewarkOntario

EWR - ONT

EWRONT

Newark

Thu 1/30

4:58 pm-7:11 am

1 stop17h 13m

Ontario

Sun 2/2

1:50 pm-5:50 am

1 stop13h 00m

$245

New YorkOntario

LGA - ONT

LGAONT

New York LaGuardia

Thu 1/23

5:00 pm-11:58 pm

1 stop9h 58m

Ontario

Sun 1/26

6:00 am-4:04 pm

1 stop7h 04m

$258

New YorkOntario

JFK - ONT

JFKONT

New York John F Kennedy Intl

Mon 1/20

7:59 am-5:57 pm

1 stop12h 58m

Ontario

Mon 1/27

1:46 pm-6:30 am

1 stop13h 44m

$259

New YorkOntario

LGA - ONT

LGAONT

New York LaGuardia

Thu 1/23

1:15 pm-8:51 pm

2 stops10h 36m

Ontario

Sun 1/26

5:10 am-5:12 pm

2 stops9h 02m

$263

New YorkOntario

JFK - ONT

JFKONT

New York John F Kennedy Intl

Sat 1/25

6:29 am-1:51 pm

2 stops10h 22m

Ontario

Sat 2/1

10:00 am-9:59 pm

2 stops8h 59m

$263

New YorkOntario

LGA - ONT

LGAONT

New York LaGuardia

Wed 1/15

10:00 pm-8:02 am

1 stop13h 02m

Ontario

Thu 1/23

9:02 am-9:02 pm

1 stop9h 00m

$268

New YorkOntario

LGA - ONT

LGAONT

New York LaGuardia

Wed 1/22

6:00 am-11:50 am

1 stop8h 50m

Ontario

Tue 1/28

7:05 am-5:14 pm

1 stop7h 09m

$277

NewarkOntario

EWR - ONT

EWRONT

Newark

Sat 2/22

10:18 am-3:37 pm

1 stop8h 19m

Ontario

Sat 3/1

12:50 pm-10:46 pm

1 stop6h 56m

$277

NewarkOntario

EWR - ONT

EWRONT

Newark

Sat 2/22

5:30 pm-11:58 pm

1 stop9h 28m

Ontario

Tue 3/4

6:00 am-6:29 pm

1 stop9h 29m

$279

New YorkOntario

JFK - ONT

JFKONT

New York John F Kennedy Intl

Wed 1/22

6:00 am-11:50 am

1 stop8h 50m

Ontario

Sun 1/26

4:05 pm-7:15 am

1 stop12h 10m

$284

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/2

Showing 1-10 of 33 results
1
2
3
4

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 January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy2 starsTrust Score*3 stars
Kiwi.comPrice Accuracy3 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy3 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.

Travel insights for flights to Ontario

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

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 December 27, 2024.

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 54 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 38 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.

When is the cheapest time to fly to Ontario?

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

Users looking for the lowest fares to Ontario should consider flying on Monday evenings, when prices are typically cheapest. Budget-minded travelers will want to avoid Sunday at noon, when prices are usually at their highest.

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 Delta.

American Airlines

American Airlines

From $250

JetBlue

JetBlue

From $228

Delta

Delta

From $138

United Airlines

United Airlines

From $227

What are the cheapest airlines that fly to Ontario?

The cheapest airlines flying from New York to Ontario are Frontier, Delta and Spirit 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 January 2, 2025.
See what other customers who have flown with United Airlines, American Airlines and Delta to Ontario have to say. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
4,694 reviews

Entertainment

7.7

Comfort

8.1

Food

7.2

Boarding

8.2

Crew

8.7

Overall

8.1

Reviews

1 / 10

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

Southwest
8.1
Very good
4,694 reviews
Southwest
8.1
Very good
4,694 reviews

Entertainment

7.7

Comfort

8.1

Food

7.2

Boarding

8.2

Crew

8.7

Overall

8.1

Reviews

1 / 10

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

Alaska Airlines
8.0
Very good
9,603 reviews
Southwest
8.1
Very good
4,694 reviews

Entertainment

7.7

Comfort

8.1

Food

7.2

Boarding

8.2

Crew

8.7

Overall

8.1

Reviews

1 / 10

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

Delta
8.0
Very good
8,536 reviews
Southwest
8.1
Very good
4,694 reviews

Entertainment

7.7

Comfort

8.1

Food

7.2

Boarding

8.2

Crew

8.7

Overall

8.1

Reviews

1 / 10

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

United Airlines
7.4
Good
8,969 reviews
Southwest
8.1
Very good
4,694 reviews

Entertainment

7.7

Comfort

8.1

Food

7.2

Boarding

8.2

Crew

8.7

Overall

8.1

Reviews

1 / 10

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
4,694 reviews

Entertainment

7.7

Comfort

8.1

Food

7.2

Boarding

8.2

Crew

8.7

Overall

8.1

Reviews

1 / 10

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

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, Spirit Airlines 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 $19, while round-trip flights cost around $27.

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

    A round-trip flight to Ontario will typically cost around $76, however they can be found for as little as $27.

  • 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 3 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.