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.

06:30 - 17:55

LHR

ONT

19h 25m2 stops

13:50 - 12:00

ONT

LHR

14h 10m1 stop

€545United Airlines

Tue, 3 Feb - Wed, 18 Feb

11:30 - 22:53

LHR

ONT

19h 23m2 stops

13:53 - 12:00

ONT

LHR

14h 07m1 stop

€546United Airlines

Mon, 19 Jan - Mon, 26 Jan

06:30 - 22:33

LHR

ONT

23h 03m2 stops

06:00 - 10:30

ONT

LHR

21h 30m1 stop

€549Delta

Mon, 9 Mar - Thu, 19 Mar

14:30 - 22:33

LHR

ONT

15h 03m1 stop

06:00 - 10:30

ONT

LHR

21h 30m1 stop

€562Virgin Atlantic

Mon, 9 Mar - Thu, 19 Mar

06:30 - 21:04

LHR

ONT

21h 34m2 stops

06:00 - 13:10

ONT

LHR

23h 10m2 stops

€564Delta

Sat, 28 Mar - Sat, 11 Apr

08:20 - 18:45

LHR

ONT

18h 25m1 stop

07:16 - 12:15

ONT

LHR

20h 59m1 stop

€569British Airways

Mon, 12 Jan - Wed, 4 Feb

11:35 - 20:50

LHR

ONT

16h 15m1 stop

13:50 - 09:40

ONT

LHR

12h 50m1 stop

€572United Airlines

Mon, 9 Mar - Mon, 16 Mar

14:30 - 22:51

LHR

ONT

16h 21m1 stop

13:20 - 10:00

ONT

LHR

13h 40m1 stop

€579Delta

Thu, 8 Jan - Mon, 16 Mar

10:05 - 17:41

LHR

ONT

15h 36m1 stop

23:59 - 05:55

ONT

LHR

22h 56m1 stop

€581United Airlines

Tue, 3 Mar - Sun, 15 Mar

14:30 - 22:51

LHR

ONT

16h 21m1 stop

11:55 - 09:00

ONT

LHR

13h 05m1 stop

€581Delta

Thu, 8 Jan - Wed, 6 May

Delta flights from London Heathrow Airport to Ontario

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

Delta

9 Mar

LHR06:30London Heathrow

23h 03m

2 stops

ONT22:33Ontario

19 Mar

ONT06:00Ontario

21h 30m

1 stop

LHR10:30London Heathrow

€549

Find similar

Delta

28 Mar

LHR06:30London Heathrow

21h 34m

2 stops

ONT21:04Ontario

11 Apr

ONT06:00Ontario

23h 10m

2 stops

LHR13:10London Heathrow

€564

Find similar

Delta

8 Jan

LHR14:30London Heathrow

16h 21m

1 stop

ONT22:51Ontario

16 Mar

ONT13:20Ontario

13h 40m

1 stop

LHR10:00London Heathrow

€579

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

9 Mar

LHR14:30London Heathrow

15h 03m

1 stop

ONT22:33Ontario

19 Mar

ONT06:00Ontario

21h 30m

1 stop

LHR10:30London Heathrow

€562

Find similar

Virgin Atlantic

12 Jan

LHR20:00London Heathrow

28h 12m

2 stops

ONT16:12Ontario

25 Jan

ONT07:30Ontario

19h 10m

2 stops

LHR10:40London Heathrow

€594

Find similar

Virgin Atlantic

13 Dec

LHR11:40London Heathrow

18h 15m

2 stops

ONT21:55Ontario

10 Jan

ONT06:00Ontario

16h 50m

2 stops

LHR06:50London Heathrow

€857

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

06:30-17:55

2 stops19h 25m

Ontario

Wed 18/2

13:50-12:00

1 stop14h 10m

€545

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Mon 19/1

11:30-22:53

2 stops19h 23m

Ontario

Mon 26/1

13:53-12:00

1 stop14h 07m

€546

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Mon 9/3

06:30-22:33

2 stops23h 03m

Ontario

Thu 19/3

06:00-10:30

1 stop21h 30m

€549

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Mon 9/3

14:30-22:33

1 stop15h 03m

Ontario

Thu 19/3

06:00-10:30

1 stop21h 30m

€562

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Sat 28/3

06:30-21:04

2 stops21h 34m

Ontario

Sat 11/4

06:00-13:10

2 stops23h 10m

€564

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Mon 12/1

08:20-18:45

1 stop18h 25m

Ontario

Wed 4/2

07:16-12:15

1 stop20h 59m

€569

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Mon 9/3

11:35-20:50

1 stop16h 15m

Ontario

Mon 16/3

13:50-09:40

1 stop12h 50m

€572

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Thu 8/1

14:30-22:51

1 stop16h 21m

Ontario

Mon 16/3

13:20-10:00

1 stop13h 40m

€579

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Tue 3/3

10:05-17:41

1 stop15h 36m

Ontario

Sun 15/3

23:59-05:55

1 stop22h 56m

€581

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Thu 8/1

14:30-22:51

1 stop16h 21m

Ontario

Wed 6/5

11:55-09:00

1 stop13h 05m

€581

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 June to fly from London Heathrow Airport, when ticket prices are also cheap, with an average price of €526.

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 €453 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	16h 02m
Direct flights	None

The fastest flight from London Heathrow Airport to Ontario takes 16h 02m

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

Search flight deals

How far is London Heathrow to Ontario by plane?
There are 8703.4 km between London Heathrow and Ontario. Flights usually cover this in 13h 19m, 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.