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

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

How long does it take to fly to Ontario?

On average, it takes 11h 15m 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 40m.

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 47% 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.

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 September 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.

£246 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

12:30 - 20:24LGW-ONT

39h 54m2 stops

06:47 - 09:00ONT-LGW

18h 13m2 stops

£359American Airlines

Find Deal

Thu, 26 Feb - Mon, 2 Mar

12:30 - 09:31LGW-ONT

29h 01m2 stops

20:04 - 07:30ONT-LGW

27h 26m2 stops

£360American Airlines

Find Deal

Thu, 26 Feb - Mon, 2 Mar

20:25 - 22:41LHR-ONT

33h 16m2 stops

07:05 - 09:00ONT-LHR

17h 55m1 stop

£361Virgin Atlantic

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Wed, 29 Oct - Wed, 5 Nov

12:20 - 22:41LHR-ONT

17h 21m1 stop

07:05 - 07:50ONT-LHR

16h 45m1 stop

£375Virgin Atlantic

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Wed, 29 Oct - Wed, 5 Nov

15:00 - 22:02LHR-ONT

15h 02m1 stop

17:03 - 13:15ONT-LHR

12h 12m1 stop

£377British Airways

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Sat, 7 Feb - Sat, 21 Feb

10:05 - 22:18LHR-ONT

19h 13m1 stop

14:59 - 11:40ONT-LHR

12h 41m1 stop

£390British Airways

Find Deal

Thu, 30 Oct - Thu, 6 Nov

10:45 - 19:19LHR-ONT

16h 34m1 stop

11:45 - 09:00ONT-LHR

13h 15m1 stop

£393KLM

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Thu, 6 Nov - Tue, 18 Nov

13:00 - 22:59MAN-ONT

17h 59m1 stop

06:00 - 12:45ONT-MAN

22h 45m2 stops

£513KLM

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Sun, 4 Jan - Wed, 14 Jan

09:25 - 22:53MAN-ONT

21h 28m2 stops

07:00 - 08:45ONT-MAN

17h 45m2 stops

£603United Airlines

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Tue, 13 Jan - Mon, 19 Jan

06:00 - 17:43MAN-ONT

19h 43m2 stops

07:00 - 10:20ONT-MAN

19h 20m2 stops

£604United Airlines

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Mon, 12 Jan - Tue, 20 Jan

American Airlines flights from United Kingdom to Ontario

Our best American Airlines deals on United Kingdom to Ontario flight tickets

American Airlines

26 Feb

LGW12:30London Gatwick

39h 54m

2 stops

ONT20:24Ontario

2 Mar

ONT06:47Ontario

18h 13m

2 stops

LGW09:00London Gatwick

£359

Find similar

American Airlines

26 Feb

LGW12:30London Gatwick

29h 01m

2 stops

ONT09:31Ontario

2 Mar

ONT20:04Ontario

27h 26m

2 stops

LGW07:30London Gatwick

£360

Find similar

American Airlines

1 Oct

LGW12:20London Gatwick

40h 51m

2 stops

ONT21:11Ontario

5 Oct

ONT23:59Ontario

24h 11m

2 stops

LGW08:10London Gatwick

£378

Find similar

Virgin Atlantic flights from United Kingdom to Ontario

Our best Virgin Atlantic deals on United Kingdom to Ontario flight tickets

Virgin Atlantic

29 Oct

LHR20:25London Heathrow

33h 16m

2 stops

ONT22:41Ontario

5 Nov

ONT07:05Ontario

17h 55m

1 stop

LHR09:00London Heathrow

£361

Find similar

Virgin Atlantic

29 Oct

LHR12:20London Heathrow

17h 21m

1 stop

ONT22:41Ontario

5 Nov

ONT07:05Ontario

16h 45m

1 stop

LHR07:50London Heathrow

£375

Find similar

Virgin Atlantic

30 Oct

LHR14:45London Heathrow

14h 56m

1 stop

ONT22:41Ontario

6 Nov

ONT07:35Ontario

21h 15m

1 stop

LHR12:50London Heathrow

£375

Find similar

momondo Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

LondonOntario

LGW - ONT

LGWONT

London Gatwick

Thu 26/2

12:30-20:24

2 stops39h 54m

Ontario

Mon 2/3

06:47-09:00

2 stops18h 13m

£359

LondonOntario

LGW - ONT

LGWONT

London Gatwick

Thu 26/2

12:30-09:31

2 stops29h 01m

Ontario

Mon 2/3

20:04-07:30

2 stops27h 26m

£360

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Wed 29/10

20:25-22:41

2 stops33h 16m

Ontario

Wed 5/11

07:05-09:00

1 stop17h 55m

£361

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Wed 29/10

12:20-22:41

1 stop17h 21m

Ontario

Wed 5/11

07:05-07:50

1 stop16h 45m

£375

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Sat 7/2

15:00-22:02

1 stop15h 02m

Ontario

Sat 21/2

17:03-13:15

1 stop12h 12m

£377

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Thu 30/10

10:05-22:18

1 stop19h 13m

Ontario

Thu 6/11

14:59-11:40

1 stop12h 41m

£390

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Thu 6/11

10:45-19:19

1 stop16h 34m

Ontario

Tue 18/11

11:45-09:00

1 stop13h 15m

£393

ManchesterOntario

MAN - ONT

MANONT

Manchester

Sun 4/1

13:00-22:59

1 stop17h 59m

Ontario

Wed 14/1

06:00-12:45

2 stops22h 45m

£513

ManchesterOntario

MAN - ONT

MANONT

Manchester

Tue 13/1

09:25-22:53

2 stops21h 28m

Ontario

Mon 19/1

07:00-08:45

2 stops17h 45m

£603

ManchesterOntario

MAN - ONT

MANONT

Manchester

Mon 12/1

06:00-17:43

2 stops19h 43m

Ontario

Tue 20/1

07:00-10:20

2 stops19h 20m

£604

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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 February is, on average, the cheapest month to fly to Ontario from United Kingdom, with most prices found around £400. If you’re not able to fly to Ontario in February, then January is your next best option. Flight prices from United Kingdom to Ontario during January average around £408.

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 £482. 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 £557. 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 £471 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 £554.

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 £526 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 £427 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 September 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 £275	Free Cancellation	Rating 7.6 1,324 reviews	Search Finnair flights
British Airways	PriceFrom £380	Free Cancellation	Rating 6.7 7,363 reviews	Search British Airways flights
United Airlines	PriceFrom £380	Free Cancellation	Rating 7.4 8,924 reviews	Search United Airlines flights
KLM	PriceFrom £388	Free Cancellation	Rating 7.8 1,386 reviews	Search KLM flights
Virgin Atlantic	PriceFrom £402	Free Cancellation	Rating 7.4 664 reviews	Search Virgin Atlantic flights
Lufthansa	PriceFrom £424	Free Cancellation	Rating 6.8 7,407 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.