How long does it take to fly to Ontario?

On average, it takes 11h 10m 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 Birmingham and into Los Angeles, then the flight time is around 14h 25m.

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 23 different airlines that fly to Ontario on a routine basis, so you have a few additional options to choose from.

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

British Airways, United Airlines, and Lufthansa 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 5 operators available for flights from United Kingdom to Ontario Airport as of March 2026.

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.

£323 Cheap Flights from the United Kingdom to Ontario in 2026

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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.

10:05 - 16:22

LHR

ONT

14h 17m

1 stop

10:59 - 08:05

ONT

LHR

13h 06m

1 stop

£379British Airways

Tue, 21 Apr - Tue, 28 Apr

10:05 - 16:22

LHR

ONT

14h 17m

1 stop

10:59 - 08:05

ONT

LHR

13h 06m

1 stop

£380British Airways

Mon, 6 Apr - Thu, 16 Apr

10:05 - 18:37

LHR

ONT

16h 32m

1 stop

14:08 - 12:10

ONT

LHR

14h 02m

1 stop

£383British Airways

Thu, 16 Apr - Thu, 23 Apr

06:10 - 20:54

LHR

ONT

22h 44m

2 stops

10:59 - 08:05

ONT

LHR

13h 06m

1 stop

£393Iberia

Tue, 14 Apr - Tue, 21 Apr

06:10 - 20:54

LHR

ONT

22h 44m

2 stops

14:08 - 14:25

ONT

LHR

16h 17m

1 stop

£394Iberia

Tue, 14 Apr - Tue, 21 Apr

06:05 - 17:13

GLA

ONT

18h 08m

2 stops

13:20 - 12:45

ONT

GLA

16h 25m

2 stops

£581KLM

Tue, 17 Mar - Tue, 24 Mar

09:40 - 21:50

EDI

ONT

20h 10m

2 stops

06:05 - 10:35

ONT

EDI

20h 30m

2 stops

£588United Airlines

Tue, 14 Apr - Tue, 21 Apr

09:40 - 21:50

EDI

ONT

20h 10m

2 stops

06:05 - 10:35

ONT

EDI

20h 30m

2 stops

£589United Airlines

Wed, 15 Apr - Wed, 22 Apr

06:00 - 16:25

GLA

ONT

18h 25m

2 stops

07:00 - 12:55

ONT

GLA

21h 55m

2 stops

£612KLM

Mon, 20 Apr - Wed, 6 May

06:30 - 23:44

LBA

ONT

25h 14m

2 stops

07:05 - 09:30

ONT

LBA

18h 25m

2 stops

£675Virgin Atlantic

Thu, 16 Apr - Sat, 25 Apr

British Airways flights from United Kingdom to Ontario

Our best British Airways deals on United Kingdom to Ontario flight tickets

British Airways

21 Apr

LHR10:05London Heathrow

14h 17m

1 stop

ONT16:22Ontario

28 Apr

ONT10:59Ontario

13h 06m

1 stop

LHR08:05London Heathrow

£379

British Airways

6 Apr

LHR10:05London Heathrow

14h 17m

1 stop

ONT16:22Ontario

16 Apr

ONT10:59Ontario

13h 06m

1 stop

LHR08:05London Heathrow

£380

British Airways

16 Apr

LHR10:05London Heathrow

16h 32m

1 stop

ONT18:37Ontario

23 Apr

ONT14:08Ontario

14h 02m

1 stop

LHR12:10London Heathrow

£383

Iberia flights from United Kingdom to Ontario

Our best Iberia deals on United Kingdom to Ontario flight tickets

Iberia

14 Apr

LHR06:10London Heathrow

22h 44m

2 stops

ONT20:54Ontario

21 Apr

ONT10:59Ontario

13h 06m

1 stop

LHR08:05London Heathrow

£393

Iberia

14 Apr

LHR06:10London Heathrow

22h 44m

2 stops

ONT20:54Ontario

21 Apr

ONT14:08Ontario

16h 17m

1 stop

LHR14:25London Heathrow

£394

Iberia

1 Apr

LHR09:15London Heathrow

22h 44m

2 stops

ONT23:59Ontario

6 Apr

ONT07:00Ontario

15h 20m

1 stop

LHR06:20London Heathrow

£394

Fly from

Fly to

Route

Depart

Return

Price

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Tue 21/4

10:05-16:22

1 stop14h 17m

Ontario

Tue 28/4

10:59-08:05

1 stop13h 06m

£379

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Mon 6/4

10:05-16:22

1 stop14h 17m

Ontario

Thu 16/4

10:59-08:05

1 stop13h 06m

£380

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Thu 16/4

10:05-18:37

1 stop16h 32m

Ontario

Thu 23/4

14:08-12:10

1 stop14h 02m

£383

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Tue 14/4

06:10-20:54

2 stops22h 44m

Ontario

Tue 21/4

10:59-08:05

1 stop13h 06m

£393

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Tue 14/4

06:10-20:54

2 stops22h 44m

Ontario

Tue 21/4

14:08-14:25

1 stop16h 17m

£394

GlasgowOntario

GLA - ONT

GLAONT

Glasgow Intl

Tue 17/3

06:05-17:13

2 stops18h 08m

Ontario

Tue 24/3

13:20-12:45

2 stops16h 25m

£581

EdinburghOntario

EDI - ONT

EDIONT

Edinburgh Turnhouse

Tue 14/4

09:40-21:50

2 stops20h 10m

Ontario

Tue 21/4

06:05-10:35

2 stops20h 30m

£588

EdinburghOntario

EDI - ONT

EDIONT

Edinburgh Turnhouse

Wed 15/4

09:40-21:50

2 stops20h 10m

Ontario

Wed 22/4

06:05-10:35

2 stops20h 30m

£589

GlasgowOntario

GLA - ONT

GLAONT

Glasgow Intl

Mon 20/4

06:00-16:25

2 stops18h 25m

Ontario

Wed 6/5

07:00-12:55

2 stops21h 55m

£612

LeedsOntario

LBA - ONT

LBAONT

Leeds/Bradford

Thu 16/4

06:30-23:44

2 stops25h 14m

Ontario

Sat 25/4

07:05-09:30

2 stops18h 25m

£675

Flights are sorted by cheapest return flights first.

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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 £406. If you’re not able to fly to Ontario in September, then February is your next best option. Flight prices from United Kingdom to Ontario during February average around £414.

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 £502 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 £391 on momondo.

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

You could potentially save up to 11% 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

Fastest flight time	13h 19m
Direct flights	None

The fastest flight from United Kingdom to Ontario takes 13h 19m

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

Search flight deals

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 5 operators available for flights from United Kingdom to Ontario Airport as of March 2026.
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
United Airlines	PriceFrom £368	Free Cancellation	Rating 7.4 9,375 reviews	Search United Airlines flights
Virgin Atlantic	PriceFrom £373	Free Cancellation	Rating 7.5 680 reviews	Search Virgin Atlantic flights
British Airways	PriceFrom £378	Free Cancellation	Rating 6.7 7,774 reviews	Search British Airways flights
KLM	PriceFrom £392	Free Cancellation	Rating 7.7 1,461 reviews	Search KLM flights
Lufthansa	PriceFrom £478	Free Cancellation	Rating 6.8 7,818 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.