What is the cheapest airline that flies from London Heathrow to Ontario?

British Airways and United Airlines are the most popular carriers operating from London Heathrow to Ontario

When did momondo last update prices for flights from London Heathrow Airport to Ontario Airport?

Prices for flights from London Heathrow Airport to Ontario Airport are refreshed on a daily basis.

How old do you have to be to fly from London Heathrow Airport to Ontario Airport?

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from London Heathrow Airport 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 licence 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.

€356 Cheap Flights from London Heathrow Airport to Ontario in 2025/26

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Find the cheapest flights from London Heathrow Airport to Los Angeles

Round-trip

One-way

Last minute

Cheap return flights

Enter your travel dates to find the best prices.

08:40 - 21:05

LHR

ONT

20h 25m2 stops

12:41 - 11:40

ONT

LHR

14h 59m1 stop

€422Delta

Tue, 3 Feb - Tue, 10 Feb

06:30 - 22:51

LHR

ONT

24h 21m2 stops

06:00 - 10:30

ONT

LHR

20h 30m2 stops

€427Virgin Atlantic

Sat, 17 Jan - Sat, 24 Jan

08:55 - 21:05

LHR

ONT

20h 10m1 stop

12:41 - 11:40

ONT

LHR

14h 59m1 stop

€435Delta

Mon, 12 Jan - Mon, 26 Jan

08:55 - 21:05

LHR

ONT

20h 10m1 stop

12:41 - 11:40

ONT

LHR

14h 59m1 stop

€436Delta

Mon, 12 Jan - Mon, 26 Jan

06:30 - 17:15

LHR

ONT

18h 45m2 stops

13:20 - 09:50

ONT

LHR

12h 30m1 stop

€437Delta

Tue, 14 Apr - Fri, 24 Apr

10:45 - 16:12

LHR

ONT

13h 27m1 stop

13:11 - 10:00

ONT

LHR

12h 49m1 stop

€438Delta

Thu, 8 Jan - Mon, 12 Jan

07:30 - 21:58

LHR

ONT

22h 28m2 stops

06:00 - 07:55

ONT

LHR

17h 55m2 stops

€441United Airlines

Thu, 22 Jan - Mon, 26 Jan

08:55 - 21:05

LHR

ONT

20h 10m1 stop

12:41 - 11:40

ONT

LHR

14h 59m1 stop

€444Delta

Mon, 12 Jan - Mon, 26 Jan

09:55 - 20:58

LHR

ONT

19h 03m2 stops

13:20 - 13:30

ONT

LHR

16h 10m2 stops

€447Delta

Tue, 14 Apr - Sat, 18 Apr

07:25 - 09:56

LHR

ONT

34h 31m2 stops

18:49 - 14:10

ONT

LHR

35h 21m1 stop

€448United Airlines

Mon, 13 Apr - Thu, 23 Apr

Delta flights from London Heathrow Airport to Ontario

Our best Delta deals on London Heathrow Airport to Ontario flight tickets

Delta

3 Feb

LHR08:40London Heathrow

20h 25m

2 stops

ONT21:05Ontario

10 Feb

ONT15:30Ontario

20h 40m

2 stops

LHR20:10London Heathrow

€422

Find similar

Delta

12 Jan

LHR08:55London Heathrow

20h 10m

1 stop

ONT21:05Ontario

26 Jan

ONT12:41Ontario

14h 59m

1 stop

LHR11:40London Heathrow

€435

Find similar

Delta

12 Jan

LHR08:55London Heathrow

20h 10m

1 stop

ONT21:05Ontario

26 Jan

ONT12:41Ontario

14h 59m

1 stop

LHR11:40London Heathrow

€436

Find similar

Virgin Atlantic flights from London Heathrow Airport to Ontario

Our best Virgin Atlantic deals on London Heathrow Airport to Ontario flight tickets

Virgin Atlantic

17 Jan

LHR06:30London Heathrow

24h 21m

2 stops

ONT22:51Ontario

24 Jan

ONT06:00Ontario

20h 30m

2 stops

LHR10:30London Heathrow

€427

Find similar

Virgin Atlantic

13 Jun

LHR10:55London Heathrow

19h 45m

2 stops

ONT22:40Ontario

28 Jun

ONT14:00Ontario

16h 15m

1 stop

LHR14:15London Heathrow

€611

Find similar

momondo Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Tue 3/2

08:40-21:05

2 stops20h 25m

Ontario

Tue 10/2

12:41-11:40

1 stop14h 59m

€422

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Sat 17/1

06:30-22:51

2 stops24h 21m

Ontario

Sat 24/1

06:00-10:30

2 stops20h 30m

€427

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Mon 12/1

08:55-21:05

1 stop20h 10m

Ontario

Mon 26/1

12:41-11:40

1 stop14h 59m

€435

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Mon 12/1

08:55-21:05

1 stop20h 10m

Ontario

Mon 26/1

12:41-11:40

1 stop14h 59m

€436

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Tue 14/4

06:30-17:15

2 stops18h 45m

Ontario

Fri 24/4

13:20-09:50

1 stop12h 30m

€437

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Thu 8/1

10:45-16:12

1 stop13h 27m

Ontario

Mon 12/1

13:11-10:00

1 stop12h 49m

€438

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Thu 22/1

07:30-21:58

2 stops22h 28m

Ontario

Mon 26/1

06:00-07:55

2 stops17h 55m

€441

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Mon 12/1

08:55-21:05

1 stop20h 10m

Ontario

Mon 26/1

12:41-11:40

1 stop14h 59m

€444

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Tue 14/4

09:55-20:58

2 stops19h 03m

Ontario

Sat 18/4

13:20-13:30

2 stops16h 10m

€447

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Mon 13/4

07:25-09:56

2 stops34h 31m

Ontario

Thu 23/4

18:49-14:10

1 stop35h 21m

€448

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 London Heathrow Airport 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

What is the cheapest month to fly to Ontario?

If you don’t want to visit Ontario in September, then you should wait until November to fly from London Heathrow Airport, when ticket prices are also cheap, with an average price of €561.

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

You are more likely to see cheaper flights to Ontario from London Heathrow Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Ontario for around €615 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 London Heathrow Airport for as low as €450 on momondo.

When to book flights from London Heathrow Airport to Ontario

Are you open to changing your travel dates? Check out the ideal times to fly from London Heathrow Airport to Ontario according to our flight data. Find out which month and days have the cheapest flights.

Estimated return price

Cheap London Heathrow Airport to Ontario (LHR to ONT) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from London Heathrow Airport to Ontario

Fastest flight time	15h 17m
Direct flights	None

The fastest flight from London Heathrow Airport to Ontario takes 15h 17m

There are no direct flights from London Heathrow Airport to Ontario. There are no popular flight routes from London Heathrow Airport to Ontario.

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How far is London Heathrow to Ontario by plane?
There are 8703.4 km between London Heathrow and Ontario. Flights usually cover this in 15h 17m, depending on flying conditions and air traffic around both airports.
When did momondo last update prices for flights from London Heathrow Airport to Ontario Airport?
Prices for flights from London Heathrow Airport to Ontario Airport are refreshed on a daily basis.
How old do you have to be to fly from London Heathrow Airport to Ontario Airport?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from London Heathrow Airport 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 licence 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.

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from London to Ontario for you.

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

momondo does allow users to show only those flights to Ontario from London which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from London to Ontario?

momondo helps you find the best flight between London and Ontario by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

Yes momondo offers price alerts on flights to Ontario from London. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.