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

United Airlines and JetBlue 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.

€436 Cheap Flights from London Heathrow Airport to Ontario in 2026

Q: What is the typical price of a round-trip flight between London Heathrow Airport and Ontario?

Prices are currently high for flights on this route. Typical prices usually range from €600 to €536. The lowest price recently found on this route was €621.

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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 - 22:34

LHR

ONT

24h 04m

2 stops

11:52 - 12:10

ONT

LHR

16h 18m

1 stop

€621Virgin Atlantic

Fri, 29 May - Wed, 3 Jun

06:30 - 18:33

LHR

ONT

20h 03m

2 stops

11:52 - 15:35

ONT

LHR

19h 43m

1 stop

€622Delta

Tue, 5 May - Tue, 19 May

11:00 - 16:24

LHR

ONT

13h 24m

1 stop

14:22 - 12:10

ONT

LHR

13h 48m

1 stop

€630British Airways

Wed, 5 Aug - Mon, 31 Aug

11:40 - 22:34

LHR

ONT

18h 54m

1 stop

11:52 - 12:10

ONT

LHR

16h 18m

1 stop

€636Virgin Atlantic

Fri, 29 May - Wed, 3 Jun

11:00 - 16:24

LHR

ONT

13h 24m

1 stop

10:25 - 09:00

ONT

LHR

14h 35m

1 stop

€637British Airways

Wed, 5 Aug - Thu, 20 Aug

09:15 - 22:34

LHR

ONT

21h 19m

1 stop

23:59 - 10:55

ONT

LHR

26h 56m

1 stop

€638British Airways

Tue, 4 Aug - Sun, 23 Aug

11:00 - 16:24

LHR

ONT

13h 24m

1 stop

13:00 - 11:05

ONT

LHR

14h 05m

1 stop

€640British Airways

Wed, 5 Aug - Wed, 19 Aug

09:55 - 21:00

LHR

ONT

19h 05m

2 stops

06:45 - 12:10

ONT

LHR

21h 25m

1 stop

€641Delta

Tue, 5 May - Tue, 19 May

11:45 - 22:37

LHR

ONT

18h 52m

2 stops

17:50 - 15:35

ONT

LHR

13h 45m

1 stop

€642Delta

Tue, 5 May - Tue, 19 May

11:00 - 16:24

LHR

ONT

13h 24m

1 stop

13:00 - 11:05

ONT

LHR

14h 05m

1 stop

€644British Airways

Tue, 11 Aug - Mon, 31 Aug

Virgin Atlantic flights from London Heathrow Airport to Ontario

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

Virgin Atlantic

29 May

LHR06:30London Heathrow

24h 04m

2 stops

ONT22:34Ontario

3 Jun

ONT11:52Ontario

16h 18m

1 stop

LHR12:10London Heathrow

€621

Virgin Atlantic

29 May

LHR11:40London Heathrow

18h 54m

1 stop

ONT22:34Ontario

3 Jun

ONT11:52Ontario

16h 18m

1 stop

LHR12:10London Heathrow

€636

Virgin Atlantic

19 May

LHR12:45London Heathrow

18h 49m

2 stops

ONT23:34Ontario

26 May

ONT13:29Ontario

17h 31m

2 stops

LHR15:00London Heathrow

€658

Delta flights from London Heathrow Airport to Ontario

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

Delta

5 May

LHR06:30London Heathrow

20h 03m

2 stops

ONT18:33Ontario

19 May

ONT11:52Ontario

19h 43m

1 stop

LHR15:35London Heathrow

€622

Delta

5 May

LHR09:55London Heathrow

19h 05m

2 stops

ONT21:00Ontario

19 May

ONT06:45Ontario

21h 25m

1 stop

LHR12:10London Heathrow

€641

Delta

5 May

LHR11:45London Heathrow

18h 52m

2 stops

ONT22:37Ontario

19 May

ONT17:50Ontario

13h 45m

1 stop

LHR15:35London Heathrow

€642

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

Cheapest return flight

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Fri 29/5

06:30-22:34

2 stops24h 04m

Ontario

Wed 3/6

11:52-12:10

1 stop16h 18m

€621

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Tue 5/5

06:30-18:33

2 stops20h 03m

Ontario

Tue 19/5

11:52-15:35

1 stop19h 43m

€622

Fastest return journey

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Wed 5/8

11:00-16:24

1 stop13h 24m

Ontario

Mon 31/8

14:22-12:10

1 stop13h 48m

€630

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Fri 29/5

11:40-22:34

1 stop18h 54m

Ontario

Wed 3/6

11:52-12:10

1 stop16h 18m

€636

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Wed 5/8

11:00-16:24

1 stop13h 24m

Ontario

Thu 20/8

10:25-09:00

1 stop14h 35m

€637

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Tue 4/8

09:15-22:34

1 stop21h 19m

Ontario

Sun 23/8

23:59-10:55

1 stop26h 56m

€638

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Wed 5/8

11:00-16:24

1 stop13h 24m

Ontario

Wed 19/8

13:00-11:05

1 stop14h 05m

€640

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Tue 5/5

09:55-21:00

2 stops19h 05m

Ontario

Tue 19/5

06:45-12:10

1 stop21h 25m

€641

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Tue 5/5

11:45-22:37

2 stops18h 52m

Ontario

Tue 19/5

17:50-15:35

1 stop13h 45m

€642

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Tue 11/8

11:00-16:24

1 stop13h 24m

Ontario

Mon 31/8

13:00-11:05

1 stop14h 05m

€644

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 typical price of a round-trip flight between London Heathrow Airport and Ontario?

What is the cheapest month to fly to Ontario?

If you don’t want to visit Ontario in February, then you should wait until January to fly from London Heathrow Airport, when ticket prices are also cheap, with an average price of €480.

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 €597 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 €430 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	14h 17m
Direct flights	None

The fastest flight from London Heathrow Airport to Ontario takes 14h 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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Frequently asked questions about flying from London Heathrow Airport to Ontario

How far is London Heathrow to Ontario by plane?
There are 8703.4 km between London Heathrow and Ontario. Flights usually cover this in 14h 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.