Which airlines fly to Ontario?

British Airways, Virgin Atlantic and Scandinavian Airlines are the top three most popular airlines that fly to Ontario from United Kingdom according to our data. British Airways is the first choice among our users, with 46% of people opting to fly with this airline when travelling to Ontario. Keep in mind that there are 26 different airlines that fly to Ontario on a routine basis, so you have a few additional options to choose from.

How long does it take to fly to Ontario?

On average, it takes 13h 05m to fly from United Kingdom to Ontario if you fly out of London (the most popular airport in United Kingdom) and into Los Angeles (the most popular airport in Ontario). If you’re flying out of Edinburgh and into Los Angeles, then the flight time is around 13h 55m.

What is the cheapest airline that flies from United Kingdom to Ontario?

British Airways, Virgin Atlantic, and United Airlines are the most popular carriers operating from United Kingdom to Ontario

When did momondo last update prices for flights from United Kingdom to Ontario Airport?

Prices for flights from United Kingdom to Ontario Airport are refreshed on a daily basis.

How many operators does momondo search for flights from United Kingdom to Ontario Airport?

There are 6 operators available for flights from United Kingdom to Ontario Airport as of November 2025.

How old do you have to be to fly from United Kingdom to Ontario Airport?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from United Kingdom to Ontario Airport.

What documentation or ID do you need to fly to Ontario Airport?

The necessary travel and health documents for your Ontario Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

£259 Cheap Flights from the United Kingdom to Ontario in 2025/26

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Find the cheapest flights from the United Kingdom to Los Angeles

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Recent return flight deals from the United Kingdom to Los Angeles

Enter your travel dates to find the best prices.

11:45 - 11:59LHR-ONT

32h 14m2 stops

07:30 - 12:50ONT-LHR

21h 20m1 stop

£399Delta

Find Deal

Thu, 26 Feb - Mon, 2 Mar

08:55 - 21:07LHR-ONT

20h 12m1 stop

13:09 - 11:40ONT-LHR

14h 31m1 stop

£413Delta

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Wed, 18 Feb - Sat, 28 Feb

11:20 - 17:15LHR-ONT

13h 55m1 stop

13:00 - 09:50ONT-LHR

12h 50m1 stop

£425KLM

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Thu, 2 Apr - Tue, 7 Apr

11:20 - 17:16LHR-ONT

13h 56m1 stop

13:00 - 09:50ONT-LHR

12h 50m1 stop

£432KLM

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Wed, 15 Apr - Sat, 25 Apr

10:45 - 23:53LHR-ONT

21h 08m1 stop

13:10 - 10:00ONT-LHR

12h 50m1 stop

£444Virgin Atlantic

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Thu, 26 Feb - Mon, 2 Mar

10:45 - 23:58LHR-ONT

21h 13m1 stop

06:00 - 10:00ONT-LHR

20h 00m1 stop

£462Virgin Atlantic

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Wed, 3 Dec - Fri, 12 Dec

06:00 - 18:45LHR-ONT

20h 45m2 stops

15:09 - 12:15ONT-LHR

13h 06m1 stop

£493British Airways

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Tue, 20 Jan - Fri, 30 Jan

10:05 - 17:37LHR-ONT

15h 32m1 stop

13:50 - 12:00ONT-LHR

14h 10m1 stop

£497United Airlines

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Tue, 2 Dec - Tue, 9 Dec

10:05 - 17:37LHR-ONT

15h 32m1 stop

13:34 - 09:40ONT-LHR

12h 06m1 stop

£498United Airlines

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Wed, 3 Dec - Wed, 10 Dec

15:00 - 22:48LHR-ONT

15h 48m1 stop

15:19 - 12:15ONT-LHR

12h 56m1 stop

£499British Airways

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Tue, 10 Feb - Tue, 3 Mar

Delta flights from United Kingdom to Ontario

Our best Delta deals on United Kingdom to Ontario flight tickets

Delta

26 Feb

LHR11:45London Heathrow

32h 14m

2 stops

ONT11:59Ontario

2 Mar

ONT07:30Ontario

21h 20m

1 stop

LHR12:50London Heathrow

£399

Find similar

Delta

18 Feb

LHR08:55London Heathrow

20h 12m

1 stop

ONT21:07Ontario

28 Feb

ONT13:09Ontario

14h 31m

1 stop

LHR11:40London Heathrow

£413

Find similar

Delta

26 Feb

LHR06:30London Heathrow

22h 37m

2 stops

ONT21:07Ontario

2 Mar

ONT07:30Ontario

19h 00m

1 stop

LHR10:30London Heathrow

£429

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Air France flights from United Kingdom to Ontario

Our best Air France deals on United Kingdom to Ontario flight tickets

Air France

8 Jan

LHR10:45London Heathrow

13h 28m

1 stop

ONT16:13Ontario

11 Jan

ONT13:04Ontario

35h 56m

1 stop

LHR09:00London Heathrow

£450

Find similar

Air France

19 Nov

NCL11:05Newcastle upon Tyne

19h 59m

2 stops

ONT23:04Ontario

29 Nov

ONT12:16Ontario

19h 54m

2 stops

NCL16:10Newcastle upon Tyne

£1,005

Find similar

Fly from

Fly to

Route

Depart

Return

Price

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Thu 26/2

11:45-11:59

2 stops32h 14m

Ontario

Mon 2/3

07:30-12:50

1 stop21h 20m

£399

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Wed 18/2

08:55-21:07

1 stop20h 12m

Ontario

Sat 28/2

13:09-11:40

1 stop14h 31m

£413

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Thu 2/4

11:20-17:15

1 stop13h 55m

Ontario

Tue 7/4

13:00-09:50

1 stop12h 50m

£425

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Wed 15/4

11:20-17:16

1 stop13h 56m

Ontario

Sat 25/4

13:00-09:50

1 stop12h 50m

£432

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Thu 26/2

10:45-23:53

1 stop21h 08m

Ontario

Mon 2/3

13:10-10:00

1 stop12h 50m

£444

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Wed 3/12

10:45-23:58

1 stop21h 13m

Ontario

Fri 12/12

06:00-10:00

1 stop20h 00m

£462

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Tue 20/1

06:00-18:45

2 stops20h 45m

Ontario

Fri 30/1

15:09-12:15

1 stop13h 06m

£493

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Tue 2/12

10:05-17:37

1 stop15h 32m

Ontario

Tue 9/12

13:50-12:00

1 stop14h 10m

£497

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Wed 3/12

10:05-17:37

1 stop15h 32m

Ontario

Wed 10/12

13:34-09:40

1 stop12h 06m

£498

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Tue 10/2

15:00-22:48

1 stop15h 48m

Ontario

Tue 3/3

15:19-12:15

1 stop12h 56m

£499

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How to get the cheapest flight ticket from United Kingdom to Ontario

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Other information

What is the cheapest month to fly to Ontario?

The month of September is, on average, the cheapest month to fly to Ontario from United Kingdom, with most prices found around £422. If you’re not able to fly to Ontario in September, then January is your next best option. Flight prices from United Kingdom to Ontario during January average around £426.

What is the cheapest day to depart on your flight to Ontario?

The cheapest day to depart on your flight to Ontario is on a Wednesday when prices can be found for as low as £503. This is often the case because there is less demand to fly during this day of the week. Flights from United Kingdom to Ontario on a Sunday will generally be more expensive and average around £581. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Ontario?

Flying to Ontario from United Kingdom in the evening is the least expensive time of day to depart. momondo users have found prices as low as £492 when looking at flights departing in the evening. In contrast, the most expensive time of day to depart to Ontario is at midday when prices are around £578.

How far in advance should I book a flight to Ontario?

You are more likely to see cheaper flights to Ontario from United Kingdom when booking weeks ahead of your departure date. In general, you can expect to find flights to Ontario for around £550 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Ontario from United Kingdom for as low as £415 on momondo.

Can stopping save me money on United Kingdom to Ontario flights?

You could potentially save up to 2% on your flight if you consider stops on a United Kingdom to Ontario flight.

Cheap United Kingdom to Ontario flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from United Kingdom to Ontario

Direct flights	None

There are no direct flights from United Kingdom to Ontario. There are no popular flight routes from United Kingdom to Ontario.

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When did momondo last update prices for flights from United Kingdom to Ontario Airport?
Prices for flights from United Kingdom to Ontario Airport are refreshed on a daily basis.
How many operators does momondo search for flights from United Kingdom to Ontario Airport?
There are 6 operators available for flights from United Kingdom to Ontario Airport as of November 2025.
How old do you have to be to fly from United Kingdom to Ontario Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from United Kingdom to Ontario Airport.
What documentation or ID do you need to fly to Ontario Airport?
The necessary travel and health documents for your Ontario Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Best airlines flying from United Kingdom to Ontario

Compare and see reviews for airlines that fly from United Kingdom to Ontario with momondo

Airline	Rating	Free Cancellation	Price
Finnair	PriceFrom £287	Free Cancellation	Rating 7.6 1,335 reviews	Search Finnair flights
British Airways	PriceFrom £396	Free Cancellation	Rating 6.7 7,495 reviews	Search British Airways flights
United Airlines	PriceFrom £396	Free Cancellation	Rating 7.4 9,000 reviews	Search United Airlines flights
KLM	PriceFrom £405	Free Cancellation	Rating 7.7 1,405 reviews	Search KLM flights
Virgin Atlantic	PriceFrom £420	Free Cancellation	Rating 7.5 671 reviews	Search Virgin Atlantic flights
Lufthansa	PriceFrom £443	Free Cancellation	Rating 6.8 7,553 reviews	Search Lufthansa flights

Why use momondo?

Why should I use momondo to find a flight deal from United Kingdom to Ontario?

It is quick and easy to find United Kingdom to Ontario flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Ontario that suits you.

Can I find flights from United Kingdom to Ontario with flexible booking policies on momondo?

Flights from United Kingdom to Ontario with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from United Kingdom to Ontario?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Ontario from United Kingdom.

I’m not ready to book a flight from United Kingdom to Ontario right now. Can momondo alert me if prices change?

Yes. momondo can track prices for United Kingdom to Ontario flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.