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, Virgin Atlantic 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 £456, while return flights cost around £66.

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 17 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).

£313+ Flights to Ontario, California

Flights to Ontario in 2025

Return from	£387
One-way from	£313
Popular in	August
Cheapest in	February
Average price	£462

Lufthansa
22/4-29/4
2 total stops
29h 21m total
London to Los Angeles

Search Deals

9/5
3 total stops
50h 51m total
London to Ontario

Search Deals

Highest demand for flights based on searches. 9% potential increase in price (£44 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease (£10 potential savings vs. average return price).

Search Deals

Average for return flights in March 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 25 March 2025.

Thu 24/411:15LHR - ONT

1 stop15h 05mBritish Airways

Thu 1/514:44ONT - LHR

1 stop15h 41mBritish Airways

Deal found 24/3£404

Wed 23/411:45LHR - ONT

2 stops19h 56mVirgin Atlantic

Wed 14/513:10ONT - LHR

1 stop12h 40mVirgin Atlantic

Deal found 24/3£405

Tue 22/410:55LHR - ONT

1 stop13h 38mKLM

Tue 13/513:10ONT - LHR

1 stop12h 40mKLM

Deal found 25/3£419

Fri 12/915:40LHR - ONT

1 stop14h 00mAmerican Airlines

Mon 22/915:00ONT - LHR

1 stop13h 30mAmerican Airlines

Deal found 24/3£422

Tue 22/409:55LHR - ONT

2 stops20h 41mDelta

Tue 29/412:07ONT - LHR

2 stops15h 18mDelta

Deal found 24/3£425

Tue 29/406:30LHR - ONT

2 stops19h 21mUnited Airlines

Tue 20/515:10ONT - LHR

1 stop15h 00mUnited Airlines

Deal found 25/3£459

Wed 23/412:20LGW - ONT

2 stops19h 30mMultiple Airlines

Wed 14/522:40ONT - LGW

2 stops25h 30mMultiple Airlines

Deal found 24/3£485

Thu 24/416:25LHR - ONT

1 stop15h 25mFinnair

Thu 1/512:50ONT - LHR

1 stop14h 00mFinnair

Deal found 25/3£486

Sat 19/409:30LHR - ONT

2 stops43h 12mAir Canada

Fri 2/513:20ONT - LHR

2 stops36h 40mAir Canada

Deal found 24/3£501

Mon 31/316:25LHR - ONT

1 stop15h 29mAlaska Airlines

Mon 7/414:44ONT - LHR

1 stop14h 01mAlaska Airlines

Deal found 24/3£519

Sun 20/415:10LHR - ONT

1 stop15h 00mIberia

Sun 27/414:44ONT - LHR

1 stop34h 16mIberia

Deal found 24/3£520

Thu 1/508:45LCY - ONT

2 stops21h 15mMultiple Airlines

Sat 17/506:00ONT - LCY

2 stops27h 30mMultiple Airlines

Deal found 25/3£548

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 25 March 2025.

Thu 24/411:15LHR - ONT

1 stop15h 05mBritish Airways

Thu 1/514:44ONT - LHR

1 stop15h 41mBritish Airways

Deal found 24/3£404

Wed 23/411:45LHR - ONT

2 stops19h 56mVirgin Atlantic

Wed 14/513:10ONT - LHR

1 stop12h 40mVirgin Atlantic

Deal found 24/3£405

Tue 22/410:55LHR - ONT

1 stop13h 38mKLM

Tue 13/513:10ONT - LHR

1 stop12h 40mKLM

Deal found 25/3£419

Fri 12/915:40LHR - ONT

1 stop14h 00mAmerican Airlines

Mon 22/915:00ONT - LHR

1 stop13h 30mAmerican Airlines

Deal found 24/3£422

Tue 22/409:55LHR - ONT

2 stops20h 41mDelta

Tue 29/412:07ONT - LHR

2 stops15h 18mDelta

Deal found 24/3£425

Tue 29/406:30LHR - ONT

2 stops19h 21mUnited Airlines

Tue 20/515:10ONT - LHR

1 stop15h 00mUnited Airlines

Deal found 25/3£459

Wed 23/412:20LGW - ONT

2 stops19h 30mMultiple Airlines

Wed 14/522:40ONT - LGW

2 stops25h 30mMultiple Airlines

Deal found 24/3£485

Thu 24/416:25LHR - ONT

1 stop15h 25mFinnair

Thu 1/512:50ONT - LHR

1 stop14h 00mFinnair

Deal found 25/3£486

Wed 23/411:00LHR - ONT

1 stop20h 41mAir France

Wed 30/413:20ONT - LHR

1 stop12h 30mAir France

Deal found 24/3£490

Sat 19/409:30LHR - ONT

2 stops43h 12mAir Canada

Fri 2/513:20ONT - LHR

2 stops36h 40mAir Canada

Deal found 24/3£501

Sun 20/415:10LHR - ONT

1 stop15h 00mIberia

Sun 27/414:44ONT - LHR

1 stop34h 16mIberia

Deal found 24/3£520

Tue 16/908:15LHR - ONT

1 stop21h 26mIcelandair

Fri 26/923:00ONT - LHR

1 stop13h 45mIcelandair

Deal found 24/3£606

Last-minute flights to Ontario
Discover last-minute flight deals to Ontario. Data last updated 25 March 2025 and is based on user searches.

Sun 30/316:25LHR - ONT

1 stop15h 29mIberia

Sun 6/412:50ONT - LHR

1 stop33h 35mIberia

Deal found 25/3£852

Mon 31/316:25LHR - ONT

1 stop15h 29mAlaska Airlines

Mon 7/414:44ONT - LHR

1 stop14h 01mAlaska Airlines

Deal found 24/3£519

Mon 31/317:25LHR - ONT

1 stop25h 37mDelta

Thu 29/514:55ONT - LHR

1 stop15h 20mDelta

Deal found 24/3£584

Mon 31/315:40LHR - ONT

1 stop14h 20mAmerican Airlines

Mon 7/416:35ONT - LHR

1 stop12h 15mAmerican Airlines

Deal found 24/3£617

Mon 31/322:05LHR - ONT

2 stops31h 50mMultiple Airlines

Mon 7/416:35ONT - LHR

1 stop12h 15mMultiple Airlines

Deal found 24/3£1,076

Tue 1/415:10LHR - ONT

1 stop15h 17mBritish Airways

Tue 8/416:35ONT - LHR

1 stop12h 15mBritish Airways

Deal found 25/3£483

Tue 1/415:10LHR - ONT

1 stop15h 17mFinnair

Wed 30/410:54ONT - LHR

1 stop14h 06mFinnair

Deal found 24/3£490

Tue 1/413:25LHR - ONT

1 stop16h 57mVirgin Atlantic

Sun 1/611:46ONT - LHR

1 stop15h 34mVirgin Atlantic

Deal found 24/3£698

Tue 1/410:35LHR - ONT

1 stop15h 16mUnited Airlines

Sun 1/613:33ONT - LHR

1 stop14h 47mUnited Airlines

Deal found 25/3£718

Wed 2/411:00LHR - ONT

1 stop20h 56mAir France

Fri 25/413:20ONT - LHR

1 stop12h 30mAir France

Deal found 25/3£649

Wed 2/422:05LHR - ONT

2 stops31h 50mAvianca

Thu 12/623:25ONT - LHR

2 stops32h 10mAvianca

Deal found 23/3£2,069

Thu 3/410:55LHR - ONT

1 stop13h 38mKLM

Tue 29/412:07ONT - LHR

1 stop15h 03mKLM

Deal found 24/3£487

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 25 March 2025.

Fri 9/518:25LGW - ONT

3 stops50h 51mMultiple Airlines

Deal found 25/3£313

Wed 23/413:40LHR - ONT

1 stop16h 18mMultiple Airlines

Deal found 25/3£408

Sat 19/412:00LHR - ONT

1 stop17h 58mIberia

Deal found 24/3£410

Sat 19/413:40LHR - ONT

1 stop16h 18mLufthansa

Deal found 24/3£433

Mon 14/712:20LGW - ONT

2 stops18h 38mBritish Airways

Deal found 23/3£571

Sun 4/514:10LHR - ONT

2 stops34h 34mWestJet

Deal found 24/3£584

Wed 7/511:55LHR - ONT

1 stop17h 16mJetBlue

Deal found 24/3£588

Mon 26/516:25LHR - ONT

1 stop15h 18mFinnair

Deal found 24/3£606

Wed 9/411:00LHR - ONT

1 stop20h 52mAir France

Deal found 25/3£609

Mon 26/512:10LGW - ONT

2 stops41h 01mIcelandair

Deal found 25/3£631

Fri 11/413:05LHR - ONT

1 stop17h 31mKLM

Deal found 24/3£648

Mon 14/713:10LHR - ONT

2 stops17h 48mBritish Airways

Deal found 24/3£657

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

Thu 24/4

11:15-18:20

1 stop15h 05m

Ontario

Thu 1/5

14:44-14:25

1 stop15h 41m

£404

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Wed 23/4

11:45-23:41

2 stops19h 56m

Ontario

Wed 14/5

13:10-09:50

1 stop12h 40m

£405

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Tue 22/4

10:55-16:33

1 stop13h 38m

Ontario

Tue 13/5

13:10-09:50

1 stop12h 40m

£419

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Fri 12/9

15:40-21:40

1 stop14h 00m

Ontario

Mon 22/9

15:00-12:30

1 stop13h 30m

£422

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Tue 22/4

09:55-22:36

2 stops20h 41m

Ontario

Tue 29/4

12:07-11:25

2 stops15h 18m

£425

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Tue 29/4

06:30-17:51

2 stops19h 21m

Ontario

Tue 20/5

15:10-14:10

1 stop15h 00m

£459

LondonOntario

LGW - ONT

LGWONT

London Gatwick

Wed 23/4

12:20-23:50

2 stops19h 30m

Ontario

Wed 14/5

22:40-08:10

2 stops25h 30m

£485

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Thu 24/4

16:25-23:50

1 stop15h 25m

Ontario

Thu 1/5

12:50-10:50

1 stop14h 00m

£486

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Wed 23/4

11:00-23:41

1 stop20h 41m

Ontario

Wed 30/4

13:20-09:50

1 stop12h 30m

£490

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Sat 19/4

09:30-20:42

2 stops43h 12m

Ontario

Fri 2/5

13:20-10:00

2 stops36h 40m

£501

Flights are sorted by cheapest return flights first.

Deals found on 25/3

Showing 1-10 of 46 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 26 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 £550

Virgin Atlantic

From £546

Finnair

From £548

Lufthansa

From £591

What are the cheapest airlines that fly to Ontario?

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

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

7,890 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

7,890 reviews

Delta

8.0

Very Good

7,890 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

1,318 reviews

Delta

8.0

Very Good

7,890 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

1,266 reviews

Delta

8.0

Very Good

7,890 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

7.4

Good

1,423 reviews

Delta

8.0

Very Good

7,890 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

8,605 reviews

Delta

8.0

Very Good

7,890 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, Virgin Atlantic 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 £456, while return flights cost around £66.
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 17 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.

£313+ 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 9/5. 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 25 March 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 25 March 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 25 March 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 25 March 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 21 March 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 25 March 2025.