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.

What is the cheapest month to fly to Ontario?

Currently, the cheapest month for flights to Ontario is August . The most expensive month for flights is March . The cheapest prices are shown above but prices will vary according to departure times, airlines, class and how early you book.

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 $35.

How much is a round-trip flight to Ontario?

A round-trip flight to Ontario will typically cost around $127, however they can be found for as little as $35.

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).

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.

$101+ Save on Flights to Ontario, California

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Flights to Ontario in 2025

Popular in	December
Cheapest in	September
Average price	$393
Round-trip from	$158
One-way from	$101
Good round-trip deal	$257 or less
Good one-way deal	$128 or less

Highest demand for flights based on searches. 2% potential increase in price ($10 potential increase over avg. RT price).

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Cheapest flight prices on average. 2% potential price decrease ($11 potential savings vs. average RT price).

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Average for round-trip flights in March 2025

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From New York to Los Angeles

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One-way flight from New York to Ontario (ONT)

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Price to beat on a round-trip flight from New York to Ontario.

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Price to beat on a one-way flight from New York to Ontario.

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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 14, 2025.

Tue 4/86:59 amJFK - ONT

1 stop11h 05mFrontier

Tue 4/152:43 pmONT - JFK

1 stop11h 47mFrontier

Deal found 3/13$160

Tue 4/110:59 pmLGA - ONT

1 stop14h 22mFrontier

Wed 4/911:23 amONT - LGA

1 stop7h 37mFrontier

Deal found 3/14$160

Fri 5/96:10 pmJFK - ONT

Nonstop6h 12mJetBlue

Tue 5/1310:40 pmONT - JFK

Nonstop5h 20mJetBlue

Deal found 3/13$223

Thu 5/15:29 pmJFK - ONT

1 stop9h 30mMultiple Airlines

Wed 5/76:47 pmONT - JFK

1 stop14h 12mMultiple Airlines

Deal found 3/13$229

Tue 9/1611:30 amJFK - ONT

1 stop9h 47mHawaiian Airlines

Tue 9/234:05 pmONT - JFK

1 stop10h 55mHawaiian Airlines

Deal found 3/13$263

Sat 4/265:05 pmLGA - ONT

1 stop7h 55mSouthwest

Tue 5/65:45 amONT - LGA

1 stop9h 20mSouthwest

Deal found 3/13$267

Wed 4/210:30 amEWR - ONT

1 stop10h 21mUnited Airlines

Tue 4/86:10 amONT - EWR

1 stop7h 45mUnited Airlines

Deal found 3/12$267

Fri 4/186:50 pmLGA - ONT

1 stop8h 00mAmerican Airlines

Wed 4/237:00 amONT - LGA

1 stop7h 04mAmerican Airlines

Deal found 3/13$272

Sat 4/510:30 amEWR - ONT

1 stop8h 29mAmerican Airlines

Fri 4/117:25 pmONT - EWR

1 stop7h 35mAmerican Airlines

Deal found 3/13$272

Thu 5/15:30 pmEWR - ONT

1 stop9h 28mHawaiian Airlines

Tue 5/64:29 pmONT - EWR

1 stop10h 11mHawaiian Airlines

Deal found 3/13$276

Tue 9/1612:25 pmJFK - ONT

1 stop10h 04mDelta

Tue 9/2310:59 pmONT - JFK

1 stop7h 49mDelta

Deal found 3/13$277

Tue 9/165:00 pmLGA - ONT

1 stop8h 29mDelta

Tue 9/2312:00 pmONT - LGA

1 stop7h 54mDelta

Deal found 3/13$277

Best flights to Ontario
Discover carefully curated flight deals to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 14, 2025.

Tue 4/86:59 amJFK - ONT

1 stop11h 05mFrontier

Tue 4/152:43 pmONT - JFK

1 stop11h 47mFrontier

Deal found 3/12$160

Fri 5/96:10 pmJFK - ONT

Nonstop6h 12mJetBlue

Tue 5/1310:40 pmONT - JFK

Nonstop5h 20mJetBlue

Deal found 3/13$223

Thu 5/15:29 pmJFK - ONT

1 stop9h 30mMultiple Airlines

Wed 5/76:47 pmONT - JFK

1 stop14h 12mMultiple Airlines

Deal found 3/13$229

Sat 4/265:05 pmLGA - ONT

1 stop7h 55mSouthwest

Tue 5/65:45 amONT - LGA

1 stop9h 20mSouthwest

Deal found 3/13$267

Sat 4/265:59 amEWR - ONT

1 stop8h 47mAmerican Airlines

Sat 5/37:25 pmONT - EWR

1 stop7h 35mAmerican Airlines

Deal found 3/13$267

Sun 4/202:08 pmEWR - ONT

1 stop9h 34mUnited Airlines

Thu 4/246:39 pmONT - EWR

1 stop9h 41mUnited Airlines

Deal found 3/13$273

Fri 4/254:30 pmJFK - ONT

1 stop10h 29mHawaiian Airlines

Tue 4/296:00 amONT - JFK

1 stop10h 08mHawaiian Airlines

Deal found 3/12$276

Tue 4/221:10 pmJFK - ONT

1 stop9h 18mDelta

Sat 4/2610:15 pmONT - JFK

1 stop7h 47mDelta

Deal found 3/13$277

Tue 4/110:59 pmLGA - ONT

1 stop14h 22mFrontier

Wed 4/911:23 amONT - LGA

1 stop7h 37mFrontier

Deal found 3/14$160

Tue 9/27:20 amJFK - ONT

1 stop10h 52mAlaska Airlines

Wed 9/244:05 pmONT - JFK

1 stop10h 55mAlaska Airlines

Deal found 3/13$336

Fri 4/186:50 pmLGA - ONT

1 stop8h 00mAmerican Airlines

Wed 4/237:00 amONT - LGA

1 stop7h 04mAmerican Airlines

Deal found 3/13$272

Thu 5/15:30 pmEWR - ONT

1 stop9h 28mHawaiian Airlines

Tue 5/64:29 pmONT - EWR

1 stop10h 11mHawaiian Airlines

Deal found 3/13$276

Last-minute flights to Ontario
Discover last-minute flight deals to Ontario. Data last updated March 14, 2025 and is based on user searches.

Wed 3/197:59 amJFK - ONT

1 stop26h 27mFrontier

Wed 3/262:43 pmONT - JFK

1 stop12h 47mFrontier

Deal found 3/12$180

Wed 3/196:21 amEWR - ONT

1 stop8h 38mAmerican Airlines

Tue 3/2512:49 pmONT - EWR

1 stop7h 04mAmerican Airlines

Deal found 3/12$277

Wed 3/192:54 pmJFK - ONT

1 stop8h 59mAmerican Airlines

Wed 3/2611:59 pmONT - JFK

2 stops10h 01mAmerican Airlines

Deal found 3/11$282

Thu 3/204:00 pmJFK - ONT

1 stop10h 59mHawaiian Airlines

Tue 3/256:00 amONT - JFK

1 stop10h 07mHawaiian Airlines

Deal found 3/12$362

Thu 3/204:00 pmJFK - ONT

1 stop10h 59mAlaska Airlines

Fri 3/2111:33 amONT - JFK

1 stop15h 27mAlaska Airlines

Deal found 3/12$388

Thu 3/207:21 amLGA - ONT

1 stop8h 23mUnited Airlines

Sat 4/56:10 amONT - LGA

1 stop7h 27mUnited Airlines

Deal found 3/13$458

Sat 3/224:00 pmEWR - ONT

1 stop8h 59mUnited Airlines

Wed 4/26:39 pmONT - EWR

1 stop8h 06mUnited Airlines

Deal found 3/12$372

Sat 3/226:50 amLGA - ONT

1 stop8h 39mDelta

Wed 3/2612:46 pmONT - LGA

1 stop6h 54mDelta

Deal found 3/13$449

Sun 3/236:45 pmEWR - ONT

1 stop8h 11mDelta

Thu 4/36:00 amONT - EWR

1 stop8h 37mDelta

Deal found 3/12$440

Sun 3/232:49 pmLGA - ONT

1 stop9h 04mAmerican Airlines

Thu 3/277:00 amONT - LGA

1 stop7h 05mAmerican Airlines

Deal found 3/13$462

Sun 3/236:40 pmJFK - ONT

1 stop8h 16mDelta

Sat 3/297:00 amONT - JFK

1 stop8h 36mDelta

Deal found 3/12$474

Mon 3/243:30 pmLGA - ONT

2 stops10h 50mSouthwest

Thu 3/2711:35 amONT - LGA

1 stop8h 25mSouthwest

Deal found 3/13$433

One-way flights to Ontario
Search for one-way flight options to Ontario. Find affordable one-way fares based on user searches. Data last updated March 14, 2025.

Sat 3/297:59 amJFK - ONT

1 stop10h 25mFrontier

Deal found 3/13$101

Sat 4/1910:59 pmLGA - ONT

1 stop11h 30mFrontier

Deal found 3/13$104

Thu 5/86:10 pmJFK - ONT

Nonstop6h 12mJetBlue

Deal found 3/12$129

Sat 4/195:55 amLGA - ONT

1 stop10h 37mMultiple Airlines

Deal found 3/13$132

Tue 4/156:04 pmEWR - ONT

1 stop19h 17mMultiple Airlines

Deal found 3/13$132

Sat 5/103:00 pmLGA - ONT

1 stop9h 58mAmerican Airlines

Deal found 3/13$134

Wed 4/237:00 amEWR - ONT

1 stop11h 32mAlaska Airlines

Deal found 3/13$134

Tue 4/227:20 amJFK - ONT

1 stop11h 12mHawaiian Airlines

Deal found 3/12$138

Sat 4/196:50 amEWR - ONT

1 stop8h 09mAmerican Airlines

Deal found 3/13$139

Wed 4/302:30 pmJFK - ONT

2 stops10h 28mAmerican Airlines

Deal found 3/13$144

Wed 4/91:55 pmLGA - ONT

2 stops12h 57mDelta

Deal found 3/13$154

Wed 4/92:32 pmEWR - ONT

2 stops11h 04mDelta

Deal found 3/13$154

Find flights to Ontario within your budget

Fly from

Route

Depart

Return

Price

New YorkOntario

JFK - ONT

JFKONT

New York John F Kennedy Intl

Tue 4/8

6:59 am-3:04 pm

1 stop11h 05m

Ontario

Tue 4/15

2:43 pm-5:30 am

1 stop11h 47m

$160

New YorkOntario

LGA - ONT

LGAONT

New York LaGuardia

Tue 4/1

10:59 pm-10:21 am

1 stop14h 22m

Ontario

Wed 4/9

11:23 am-10:00 pm

1 stop7h 37m

$160

New YorkOntario

JFK - ONT

JFKONT

New York John F Kennedy Intl

Fri 5/9

6:10 pm-9:22 pm

Nonstop6h 12m

Ontario

Tue 5/13

10:40 pm-7:00 am

Nonstop5h 20m

$223

New YorkOntario

JFK - ONT

JFKONT

New York John F Kennedy Intl

Thu 5/1

5:29 pm-11:59 pm

1 stop9h 30m

Ontario

Wed 5/7

6:47 pm-11:59 am

1 stop14h 12m

$229

New YorkOntario

LGA - ONT

LGAONT

New York LaGuardia

Sat 4/26

5:05 pm-10:00 pm

1 stop7h 55m

Ontario

Tue 5/6

5:45 am-6:05 pm

1 stop9h 20m

$267

NewarkOntario

EWR - ONT

EWRONT

Newark

Wed 4/2

10:30 am-5:51 pm

1 stop10h 21m

Ontario

Tue 4/8

6:10 am-4:55 pm

1 stop7h 45m

$267

New YorkOntario

LGA - ONT

LGAONT

New York LaGuardia

Fri 4/18

6:50 pm-11:50 pm

1 stop8h 00m

Ontario

Wed 4/23

7:00 am-5:04 pm

1 stop7h 04m

$272

NewarkOntario

EWR - ONT

EWRONT

Newark

Sat 4/5

10:30 am-3:59 pm

1 stop8h 29m

Ontario

Fri 4/11

7:25 pm-6:00 am

1 stop7h 35m

$272

New YorkOntario

JFK - ONT

JFKONT

New York John F Kennedy Intl

Fri 4/25

4:30 pm-11:59 pm

1 stop10h 29m

Ontario

Tue 4/29

6:00 am-7:08 pm

1 stop10h 08m

$276

NewarkOntario

EWR - ONT

EWRONT

Newark

Thu 5/1

5:30 pm-11:58 pm

1 stop9h 28m

Ontario

Tue 5/6

4:29 pm-5:40 am

1 stop10h 11m

$276

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/13

Showing 1-10 of 37 results

Compare providers for flights to Ontario

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

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy1 star	Trust Score*3 stars
eDreams	Price Accuracy3 stars	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*3 stars
Priceline	Price Accuracy1 star	Trust Score*3 stars
Kiwi.com	Price Accuracy3 stars	Trust Score*2 stars
Cheapflightsfares	Price Accuracy3 stars	Trust 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.

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?

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 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.

When is the cheapest time to fly to Ontario?

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

From $257

JetBlue

From $239

Delta

From $188

United Airlines

From $227

What are the cheapest airlines that fly to Ontario?

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

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

See what other customers who have flown with Southwest, Alaska 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

4,292 reviews

Reviews

1 / 20

10.0

Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.

Southwest

8.1

Very good

4,292 reviews

Southwest

8.1

Very good

4,292 reviews

Reviews

1 / 20

10.0

Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.

Alaska Airlines

8.0

Very good

9,735 reviews

Southwest

8.1

Very good

4,292 reviews

Reviews

1 / 20

10.0

Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.

Delta

8.0

Very good

7,944 reviews

Southwest

8.1

Very good

4,292 reviews

Reviews

1 / 20

10.0

Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.

Hawaiian Airlines

7.9

Good

2,318 reviews

Southwest

8.1

Very good

4,292 reviews

Reviews

1 / 20

10.0

Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.

United Airlines

7.4

Good

8,623 reviews

Southwest

8.1

Very good

4,292 reviews

Reviews

1 / 20

10.0

Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.

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, 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 $35.
How much is a round-trip flight to Ontario?
A round-trip flight to Ontario will typically cost around $127, however they can be found for as little as $35.
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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$101+ 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 3/29. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights to Ontario with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

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 March 14, 2025.

Popular in

Cheapest in

Average price

Round-trip from

One-way from

Good round-trip deal

Good one-way deal

Find flight deals to Ontario

Cheapest flights to OntarioExplore the most affordable flight options available to Ontario. Find the lowest fares based on data from user searches, with prices last updated on March 14, 2025.

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 14, 2025.

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 March 14, 2025.

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.

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.

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 March 7, 2025.

How long is the flight to Ontario?

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.

What are the most popular airlines that fly to Ontario?

What are the cheapest airlines that fly to Ontario?

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

See what other customers who have flown with Southwest, Alaska 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.

FAQs about flying to Ontario

Ontario, CA airport overview

What airport do you fly into for flights to Ontario?

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

What is the best airline to fly to Ontario?

What is the cheapest airport to fly to in Ontario?

How much is a round-trip flight to Ontario?

Where does the fastest flight to Ontario depart from?

Does Ontario have rental cars?

Are there hotels close 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.

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Some of the lowest fares we’ve come across for flights to Ontario.

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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 14, 2025.