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, March is the cheapest month in which you can book a flight to Ontario . Flying to Ontario in August will prove the most costly. There are multiple factors that influence the price of a flight so comparing airlines, departure airports and times can help keep costs down.

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

Yes, flights with stopovers 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, KLM 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 £448, while return flights cost around £65.

Where does the fastest flight to Ontario depart from?

For those looking to save time traveling to Ontario, London offers the quickest one-way flight (13 hours 19 minutes).

Does Ontario have car hire?

Yes. Those touching down at Ontario can take advantage of the car hire 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).

£334+ Flights to Ontario, California

Flights to Ontario in 2025

Return from	£379
One-way from	£334
Popular in	August
Cheapest in	February
Average price	£485

Air Canada
6/5-11/5
4 total stops
38h 50m total
London to Los Angeles

Search Deals

Lufthansa
4/9
1 total stop
16h 16m total
London to Ontario

Search Deals

Highest demand for flights based on searches. 9% potential increase in price (£42 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease (£9 potential savings vs. average return price).

Search Deals

Average for return flights in April 2025

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 15 April 2025.

Mon 12/519:15LHR - ONT

2 stops36h 27mVirgin Atlantic

Mon 19/513:10ONT - LHR

2 stops17h 05mVirgin Atlantic

Deal found 14/4£407

Sat 26/410:55LHR - ONT

1 stop13h 38mKLM

Wed 30/413:20ONT - LHR

1 stop12h 30mKLM

Deal found 14/4£417

Fri 2/510:30LHR - ONT

1 stop19h 40mFinnair

Fri 16/519:25ONT - LHR

2 stops16h 20mFinnair

Deal found 14/4£420

Fri 16/509:55LHR - ONT

2 stops20h 34mDelta

Mon 19/514:55ONT - LHR

1 stop15h 20mDelta

Deal found 13/4£424

Mon 21/411:15LHR - ONT

1 stop18h 43mBritish Airways

Mon 28/416:35ONT - LHR

1 stop12h 15mBritish Airways

Deal found 13/4£433

Wed 14/509:30LHR - ONT

2 stops19h 23mUnited Airlines

Wed 21/516:15ONT - LHR

1 stop33h 25mUnited Airlines

Deal found 14/4£458

Tue 13/510:25LGW - ONT

2 stops19h 32mMultiple Airlines

Tue 20/506:15ONT - LGW

2 stops17h 55mMultiple Airlines

Deal found 13/4£459

Fri 2/510:35LHR - ONT

1 stop17h 59mLufthansa

Fri 16/506:00ONT - LHR

1 stop17h 25mLufthansa

Deal found 14/4£472

Mon 1/916:25LHR - ONT

1 stop15h 04mAmerican Airlines

Sat 13/917:09ONT - LHR

1 stop13h 31mAmerican Airlines

Deal found 14/4£488

Fri 16/509:30LHR - ONT

2 stops43h 23mAir Canada

Mon 19/505:05ONT - LHR

2 stops46h 45mAir Canada

Deal found 13/4£495

Mon 24/1107:35LHR - ONT

2 stops24h 10mIberia

Fri 5/1208:48ONT - LHR

1 stop15h 27mIberia

Deal found 14/4£526

Fri 30/509:00LHR - ONT

2 stops21h 29mMultiple Airlines

Fri 6/611:44ONT - LHR

1 stop15h 36mMultiple Airlines

Deal found 14/4£557

Best flights to Ontario
Discover carefully curated flight deals to Ontario that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 15 April 2025.

Mon 12/519:15LHR - ONT

2 stops36h 27mVirgin Atlantic

Mon 19/513:10ONT - LHR

2 stops17h 05mVirgin Atlantic

Deal found 14/4£407

Sat 26/410:55LHR - ONT

1 stop13h 38mKLM

Wed 30/413:20ONT - LHR

1 stop12h 30mKLM

Deal found 14/4£417

Fri 2/512:15LHR - ONT

2 stops19h 35mFinnair

Fri 16/519:25ONT - LHR

2 stops16h 20mFinnair

Deal found 14/4£420

Fri 16/509:55LHR - ONT

2 stops20h 34mDelta

Mon 19/514:55ONT - LHR

1 stop15h 20mDelta

Deal found 13/4£424

Sat 26/415:40LHR - ONT

1 stop14h 18mBritish Airways

Fri 2/516:35ONT - LHR

1 stop12h 15mBritish Airways

Deal found 14/4£433

Wed 14/509:30LHR - ONT

2 stops19h 23mUnited Airlines

Wed 21/516:15ONT - LHR

1 stop33h 25mUnited Airlines

Deal found 14/4£458

Tue 13/510:25LGW - ONT

2 stops19h 32mMultiple Airlines

Tue 20/506:15ONT - LGW

2 stops17h 55mMultiple Airlines

Deal found 13/4£459

Fri 2/510:35LHR - ONT

1 stop17h 59mLufthansa

Fri 16/506:00ONT - LHR

1 stop17h 25mLufthansa

Deal found 14/4£472

Mon 1/916:25LHR - ONT

1 stop15h 04mAmerican Airlines

Sat 13/917:09ONT - LHR

1 stop13h 31mAmerican Airlines

Deal found 14/4£488

Fri 16/509:30LHR - ONT

2 stops43h 23mAir Canada

Mon 19/505:05ONT - LHR

2 stops46h 45mAir Canada

Deal found 13/4£495

Mon 18/811:35LGW - ONT

2 stops19h 54mIberia

Mon 8/915:00ONT - LGW

2 stops21h 00mIberia

Deal found 14/4£565

Sun 27/413:05LHR - ONT

1 stop17h 31mAir France

Tue 29/422:15ONT - LHR

1 stop31h 15mAir France

Deal found 14/4£571

Last-minute flights to Ontario
Discover last-minute flight deals to Ontario. Data last updated 15 April 2025 and is based on user searches.

Sun 20/415:40LHR - ONT

1 stop14h 18mBritish Airways

Sun 27/416:35ONT - LHR

1 stop12h 15mBritish Airways

Deal found 13/4£464

Sun 20/408:10LHR - ONT

2 stops18h 19mAmerican Airlines

Tue 13/514:44ONT - LHR

1 stop14h 01mAmerican Airlines

Deal found 14/4£795

Mon 21/414:50LHR - ONT

1 stop13h 52mUnited Airlines

Mon 28/413:20ONT - LHR

1 stop13h 05mUnited Airlines

Deal found 14/4£774

Mon 21/416:30LHR - ONT

1 stop15h 29mMultiple Airlines

Wed 7/516:29ONT - LHR

1 stop13h 11mMultiple Airlines

Deal found 14/4£997

Mon 21/413:25LHR - ONT

1 stop17h 18mVirgin Atlantic

Fri 25/406:00ONT - LHR

1 stop19h 50mVirgin Atlantic

Deal found 14/4£1,033

Mon 21/421:10LHR - ONT

1 stop28h 50mChina Airlines

Sun 27/400:10ONT - LHR

1 stop32h 20mChina Airlines

Deal found 14/4£6,655

Mon 21/411:15LHR - ONT

1 stop18h 43mBritish Airways

Mon 28/416:35ONT - LHR

1 stop12h 15mBritish Airways

Deal found 13/4£433

Tue 22/410:55LHR - ONT

1 stop13h 38mKLM

Wed 14/513:10ONT - LHR

1 stop12h 40mKLM

Deal found 14/4£677

Thu 24/410:55LHR - ONT

1 stop13h 38mAir France

Tue 29/412:07ONT - LHR

1 stop15h 03mAir France

Deal found 14/4£6,884

Sat 26/410:55LHR - ONT

1 stop13h 38mKLM

Wed 30/413:20ONT - LHR

1 stop12h 30mKLM

Deal found 14/4£417

Sun 27/413:05LHR - ONT

1 stop17h 31mAir France

Tue 29/422:15ONT - LHR

1 stop31h 15mAir France

Deal found 14/4£571

Fri 2/510:30LHR - ONT

1 stop19h 40mFinnair

Fri 16/519:25ONT - LHR

2 stops16h 20mFinnair

Deal found 14/4£420

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 15 April 2025.

Thu 4/913:40LHR - ONT

1 stop16h 16mLufthansa

Deal found 13/4£334

Sun 27/721:45LHR - ONT

3 stops50h 35mMultiple Airlines

Deal found 14/4£448

Sat 6/915:40LHR - ONT

1 stop14h 00mBritish Airways

Deal found 13/4£478

Sun 21/906:10LHR - ONT

2 stops23h 46mIberia

Deal found 14/4£527

Mon 5/511:55LHR - ONT

1 stop17h 30mJetBlue

Deal found 14/4£585

Wed 17/915:05LGW - ONT

2 stops28h 17mMultiple Airlines

Deal found 14/4£609

Tue 16/910:25LGW - ONT

2 stops19h 15mAmerican Airlines

Deal found 14/4£619

Mon 16/612:10LGW - ONT

2 stops42h 20mIcelandair

Deal found 14/4£644

Wed 14/522:05LHR - ONT

2 stops31h 50mAvianca

Deal found 14/4£678

Fri 9/511:35LGW - ONT

2 stops20h 08mIberia

Deal found 14/4£691

Fri 6/608:15LHR - ONT

1 stop21h 07mIcelandair

Deal found 14/4£701

Mon 6/1010:00LCY - ONT

2 stops20h 42mVirgin Atlantic

Deal found 14/4£720

Cheapflights Fare Finder

Use the filters below to find and compare flights to Ontario that are best for you.

Fly from

Route

Depart

Return

Price

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Mon 12/5

19:15-23:42

2 stops36h 27m

Ontario

Mon 19/5

13:10-14:15

2 stops17h 05m

£407

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Sat 26/4

10:55-16:33

1 stop13h 38m

Ontario

Wed 30/4

13:20-09:50

1 stop12h 30m

£417

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Fri 2/5

12:15-23:50

2 stops19h 35m

Ontario

Fri 16/5

19:25-19:45

2 stops16h 20m

£420

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Fri 16/5

09:55-22:29

2 stops20h 34m

Ontario

Mon 19/5

14:55-14:15

1 stop15h 20m

£424

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Sat 26/4

15:40-21:58

1 stop14h 18m

Ontario

Fri 2/5

16:35-12:50

1 stop12h 15m

£433

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Wed 14/5

09:30-20:53

2 stops19h 23m

Ontario

Wed 21/5

16:15-09:40

1 stop33h 25m

£458

LondonOntario

LGW - ONT

LGWONT

London Gatwick

Tue 13/5

10:25-21:57

2 stops19h 32m

Ontario

Tue 20/5

06:15-08:10

2 stops17h 55m

£459

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Fri 2/5

10:35-20:34

1 stop17h 59m

Ontario

Fri 16/5

06:00-07:25

1 stop17h 25m

£472

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Mon 1/9

16:25-23:29

1 stop15h 04m

Ontario

Sat 13/9

17:09-14:40

1 stop13h 31m

£488

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Fri 16/5

09:30-20:53

2 stops43h 23m

Ontario

Mon 19/5

05:05-11:50

2 stops46h 45m

£495

Flights are sorted by cheapest return flights first.

Deals found on 13/4

Showing 1-10 of 45 results

...

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 return 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 77 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 London to Ontario takes 17 hours 50 minutes. Flights to Ontario from other popular cities in United Kingdom 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 London to Ontario are British Airways, Virgin Atlantic and Finnair.

British Airways

From £546

Virgin Atlantic

From £546

Finnair

From £548

Lufthansa

From £579

What are the cheapest airlines that fly to Ontario?

The cheapest airlines flying from London to Ontario are KLM, United Airlines and Virgin Atlantic.

Rainfall in Ontario by month

In terms of precipitation, rainfall in Ontario ranges from 3.0 - 86.0 inches per month. February is typically the wettest month, when rainfall can reach 86.0 mm. June is typically the driest time to visit Ontario when rainfall is around 3.0 mm.

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 26.0 C. Travellers hoping to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 12.0 C).

Reviews of airlines servicing Ontario

Read reviews from past customers who have flown Delta, KLM and Finnair to Ontario. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very Good

7,916 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Delta

8.0

Very Good

7,916 reviews

Delta

8.0

Very Good

7,916 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

KLM

7.8

Good

1,323 reviews

Delta

8.0

Very Good

7,916 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Finnair

7.6

Good

1,269 reviews

Delta

8.0

Very Good

7,916 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Air France

7.5

Good

1,433 reviews

Delta

8.0

Very Good

7,916 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

United Airlines

7.4

Good

8,656 reviews

Delta

8.0

Very Good

7,916 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

FAQs about flying to Ontario

Ontario airport overview

At just 3.7km (2.3 miles) east of downtown Ontario, Ontario International Airport 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 stopovers?
Yes, flights with stopovers 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, KLM 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 £448, while return flights cost around £65.
Where does the fastest flight to Ontario depart from?
For those looking to save time traveling to Ontario, London offers the quickest one-way flight (13 hours 19 minutes).
Does Ontario have car hire?
Yes. Those touching down at Ontario can take advantage of the car hire 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

Fly with Cheapflights

How does Cheapflights help users find flights to Ontario?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights to Ontario. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

Why should you use Cheapflights to find cheap flight tickets to Ontario?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Ontario.

Can Cheapflights find flights to Ontario with no change fees?

Yes, we can. To see specific flights to Ontario with no change fees, users can toggle flexible booking options after using the search form above to find flights.

Can Cheapflights notify me if prices for flights to Ontario become cheaper?

Yes, Cheapflights offers price alerts on Ontario flights so you can book your flight when prices are ideal. Enable price alerts by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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.

£334+ 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 4/9. Fares are subject to change and may not be available on all flights or dates of travel.

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 858,174 searches and data was last updated on 15 April 2025.

Return from

One-way from

Popular in

Cheapest in

Average price

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 15 April 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 15 April 2025.

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 858,174 searches and data was last updated on 15 April 2025.

Use the filters below to find and compare flights to Ontario that are best for you.

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.

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 return flight from London to Ontario. Price data was last updated on 11 April 2025.

How long is the flight to Ontario?

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

Read reviews from past customers who have flown Delta, KLM and Finnair to Ontario. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

FAQs about flying to Ontario

Ontario 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 stopovers?

What is the best airline to fly to Ontario?

What is the cheapest airport to fly to in Ontario?

Where does the fastest flight to Ontario depart from?

Does Ontario have car hire?

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.

Search flights to Ontario by cabin class

Find flights to Ontario, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights to Ontario?

Why should you use Cheapflights to find cheap flight tickets to Ontario?

Can Cheapflights find flights to Ontario with no change fees?

Can Cheapflights notify me if prices for flights to Ontario become cheaper?

100% Free

Book with Flexibility

Travel Smart

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 15 April 2025.