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

United Airlines, British Airways, and KLM 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.

€371 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

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Enter your travel dates to find the best prices.

06:20 - 17:08LHR-ONT

18h 48m2 stops

13:15 - 10:00ONT-LHR

12h 45m1 stop

€470Delta

Find Deal

Tue, 23 Dec - Mon, 29 Dec

10:45 - 23:54LHR-ONT

21h 09m1 stop

06:38 - 10:30ONT-LHR

19h 52m1 stop

€481Delta

Find Deal

Tue, 23 Dec - Mon, 29 Dec

10:45 - 23:52LHR-ONT

21h 07m1 stop

06:45 - 12:50ONT-LHR

22h 05m1 stop

€486Virgin Atlantic

Find Deal

Thu, 26 Feb - Mon, 2 Mar

12:30 - 21:14LHR-ONT

16h 44m1 stop

13:00 - 09:50ONT-LHR

12h 50m1 stop

€488Delta

Find Deal

Sat, 10 Jan - Sat, 25 Apr

10:00 - 22:38LHR-ONT

44h 38m2 stops

13:00 - 10:00ONT-LHR

13h 00m1 stop

€492Virgin Atlantic

Find Deal

Thu, 26 Feb - Mon, 2 Mar

11:20 - 17:15LHR-ONT

13h 55m1 stop

13:00 - 09:50ONT-LHR

12h 50m1 stop

€520KLM

Find Deal

Tue, 7 Apr - Tue, 21 Apr

13:30 - 22:51LHR-ONT

17h 21m2 stops

13:40 - 12:00ONT-LHR

14h 20m1 stop

€540United Airlines

Find Deal

Wed, 19 Nov - Wed, 26 Nov

11:20 - 17:15LHR-ONT

13h 55m1 stop

13:00 - 09:50ONT-LHR

12h 50m1 stop

€553KLM

Find Deal

Fri, 3 Apr - Mon, 6 Apr

10:05 - 17:43LHR-ONT

15h 38m1 stop

13:20 - 09:40ONT-LHR

12h 20m1 stop

€575United Airlines

Find Deal

Wed, 21 Jan - Tue, 3 Feb

11:45 - 19:41LHR-ONT

15h 56m1 stop

07:03 - 06:50ONT-LHR

15h 47m1 stop

€595Multiple Airlines

Find Deal

Fri, 14 Nov - Thu, 4 Dec

KLM flights from London Heathrow Airport to Ontario

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

KLM

7 Apr

LHR11:20London Heathrow

13h 55m

1 stop

ONT17:15Ontario

21 Apr

ONT13:00Ontario

12h 50m

1 stop

LHR09:50London Heathrow

€520

Find similar

KLM

3 Apr

LHR11:20London Heathrow

13h 55m

1 stop

ONT17:15Ontario

6 Apr

ONT13:00Ontario

12h 50m

1 stop

LHR09:50London Heathrow

€553

Find similar

KLM

30 Oct

LHR14:45London Heathrow

14h 56m

1 stop

ONT22:41Ontario

12 Nov

ONT11:44Ontario

13h 16m

1 stop

LHR09:00London Heathrow

€576

Find similar

United Airlines flights from London Heathrow Airport to Ontario

Our best United Airlines deals on London Heathrow Airport to Ontario flight tickets

United Airlines

19 Nov

LHR13:30London Heathrow

17h 21m

2 stops

ONT22:51Ontario

26 Nov

ONT13:40Ontario

14h 20m

1 stop

LHR12:00London Heathrow

€540

Find similar

United Airlines

21 Jan

LHR10:05London Heathrow

15h 38m

1 stop

ONT17:43Ontario

4 Feb

ONT13:20Ontario

12h 20m

1 stop

LHR09:40London Heathrow

€575

Find similar

United Airlines

7 Dec

LHR08:30London Heathrow

35h 47m

2 stops

ONT12:17Ontario

14 Dec

ONT18:41Ontario

28h 44m

1 stop

LHR07:25London Heathrow

€586

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 23/12

06:20-17:08

2 stops18h 48m

Ontario

Mon 29/12

13:15-10:00

1 stop12h 45m

€470

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Tue 23/12

10:45-23:54

1 stop21h 09m

Ontario

Mon 29/12

06:38-10:30

1 stop19h 52m

€481

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Thu 26/2

10:45-23:52

1 stop21h 07m

Ontario

Mon 2/3

06:45-12:50

1 stop22h 05m

€486

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Sat 10/1

12:30-21:14

1 stop16h 44m

Ontario

Sat 25/4

13:00-09:50

1 stop12h 50m

€488

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Thu 26/2

10:00-22:38

2 stops44h 38m

Ontario

Mon 2/3

13:00-10:00

1 stop13h 00m

€492

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Tue 7/4

11:20-17:15

1 stop13h 55m

Ontario

Tue 21/4

13:00-09:50

1 stop12h 50m

€520

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Wed 19/11

13:30-22:51

2 stops17h 21m

Ontario

Wed 26/11

13:40-12:00

1 stop14h 20m

€540

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Fri 3/4

11:20-17:15

1 stop13h 55m

Ontario

Mon 6/4

13:00-09:50

1 stop12h 50m

€553

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Wed 21/1

10:05-17:43

1 stop15h 38m

Ontario

Tue 3/2

13:20-09:40

1 stop12h 20m

€575

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Fri 14/11

11:45-19:41

1 stop15h 56m

Ontario

Thu 4/12

07:03-06:50

1 stop15h 47m

€595

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 February to fly from London Heathrow Airport, when ticket prices are also cheap, with an average price of €513.

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 €619 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 €468 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

Direct flights	None

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 13h 55m, 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.