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

British Airways, United Airlines, and Avianca 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.

€413 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 €597 to €534. The lowest price recently found on this route was €600.

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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 - 17:10

LHR

ONT

18h 40m

2 stops

17:50 - 15:35

ONT

LHR

13h 45m

1 stop

€600Delta

Thu, 21 May - Wed, 3 Jun

06:30 - 16:17

LHR

ONT

17h 47m

2 stops

13:35 - 15:35

ONT

LHR

18h 00m

1 stop

€601Delta

Thu, 21 May - Wed, 3 Jun

06:30 - 16:17

LHR

ONT

17h 47m

2 stops

13:35 - 14:00

ONT

LHR

16h 25m

1 stop

€605Virgin Atlantic

Thu, 28 May - Thu, 4 Jun

08:40 - 22:34

LHR

ONT

21h 54m

2 stops

13:35 - 12:10

ONT

LHR

14h 35m

1 stop

€609Delta

Fri, 29 May - Fri, 5 Jun

06:15 - 16:17

LHR

ONT

18h 02m

2 stops

06:00 - 10:00

ONT

LHR

20h 00m

1 stop

€614Delta

Thu, 21 May - Sat, 6 Jun

11:40 - 22:34

LHR

ONT

18h 54m

1 stop

13:35 - 15:35

ONT

LHR

18h 00m

1 stop

€616Virgin Atlantic

Thu, 21 May - Wed, 3 Jun

10:55 - 23:34

LHR

ONT

20h 39m

1 stop

11:52 - 15:35

ONT

LHR

19h 43m

1 stop

€616Delta

Thu, 21 May - Wed, 3 Jun

06:30 - 16:14

LHR

ONT

17h 44m

2 stops

06:00 - 09:45

ONT

LHR

19h 45m

2 stops

€618Delta

Wed, 30 Sep - Sat, 24 Oct

10:55 - 16:35

LHR

ONT

13h 40m

1 stop

18:01 - 15:35

ONT

LHR

13h 34m

1 stop

€620Delta

Thu, 16 Jul - Thu, 30 Jul

10:55 - 16:17

LHR

ONT

13h 22m

1 stop

13:35 - 14:00

ONT

LHR

16h 25m

1 stop

€621Virgin Atlantic

Thu, 28 May - Thu, 4 Jun

Virgin Atlantic flights from London Heathrow Airport to Ontario

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

Virgin Atlantic

28 May

LHR06:30London Heathrow

17h 47m

2 stops

ONT16:17Ontario

4 Jun

ONT13:35Ontario

16h 25m

1 stop

LHR14:00London Heathrow

€605

Virgin Atlantic

21 May

LHR11:40London Heathrow

18h 54m

1 stop

ONT22:34Ontario

3 Jun

ONT13:35Ontario

18h 00m

1 stop

LHR15:35London Heathrow

€616

Virgin Atlantic

28 May

LHR10:55London Heathrow

13h 22m

1 stop

ONT16:17Ontario

4 Jun

ONT13:35Ontario

16h 25m

1 stop

LHR14:00London Heathrow

€621

Alaska Airlines flights from London Heathrow Airport to Ontario

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

Alaska Airlines

26 May

LHR17:00London Heathrow

26h 12m

1 stop

ONT11:12Ontario

3 Jun

ONT16:03Ontario

15h 02m

1 stop

LHR15:05London Heathrow

€664

Alaska Airlines

7 Jun

LHR17:00London Heathrow

26h 10m

1 stop

ONT11:10Ontario

7 Oct

ONT16:00Ontario

15h 05m

1 stop

LHR15:05London Heathrow

€665

Alaska Airlines

26 May

LHR17:00London Heathrow

14h 58m

1 stop

ONT23:58Ontario

2 Jun

ONT16:03Ontario

15h 02m

1 stop

LHR15:05London Heathrow

€670

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

Thu 21/5

06:30-17:10

2 stops18h 40m

Ontario

Wed 3/6

17:50-15:35

1 stop13h 45m

€600

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Thu 21/5

06:30-16:17

2 stops17h 47m

Ontario

Wed 3/6

13:35-15:35

1 stop18h 00m

€601

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Thu 28/5

06:30-16:17

2 stops17h 47m

Ontario

Thu 4/6

13:35-14:00

1 stop16h 25m

€605

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Fri 29/5

08:40-22:34

2 stops21h 54m

Ontario

Fri 5/6

13:35-12:10

1 stop14h 35m

€609

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Thu 21/5

06:15-16:17

2 stops18h 02m

Ontario

Sat 6/6

06:00-10:00

1 stop20h 00m

€614

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Thu 21/5

11:40-22:34

1 stop18h 54m

Ontario

Wed 3/6

13:35-15:35

1 stop18h 00m

€616

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Thu 21/5

10:55-23:34

1 stop20h 39m

Ontario

Wed 3/6

11:52-15:35

1 stop19h 43m

€616

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Wed 30/9

06:30-16:14

2 stops17h 44m

Ontario

Sat 24/10

06:00-09:45

2 stops19h 45m

€618

Fastest return journey

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Thu 16/7

10:55-16:35

1 stop13h 40m

Ontario

Thu 30/7

18:01-15:35

1 stop13h 34m

€620

LondonOntario

LHR - ONT

LHRONT

London Heathrow

Thu 28/5

10:55-16:17

1 stop13h 22m

Ontario

Thu 4/6

13:35-14:00

1 stop16h 25m

€621

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 €472.

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 €575 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 €424 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	13h 46m
Direct flights	None

The fastest flight from London Heathrow Airport to Ontario takes 13h 46m

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 13h 46m, 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.