How long is the flight from London Heathrow Airport to Region of Ontario?

Airlines like Air Canada, SWISS, and Lufthansa fly from London Heathrow Airport to Region of Ontario in about 7h 35m. The time it takes to get you to your destination can typically vary by up to 12h 01m. There are 3239 mi between London Heathrow Airport and Region of Ontario. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

What are the cheapest airlines to fly from London Heathrow Airport to Region of Ontario one-way?

To fly one-way, consider booking your trip with KLM, which is currently one of the cheapest options available, starting at £180. Icelandair flights start at £198 while deals on TAP AIR PORTUGAL start at £220 one-way.

In terms of precipitation, rainfall in Region of Ontario ranges from 51.0 - 83.0 inches per month. June is typically the wettest month, when rainfall can reach 83.0 mm. February is typically the driest time to visit Region of Ontario when rainfall is around 51.0 mm.

If weather is an important factor for your trip to Region of Ontario, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 21.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -6.0 C).

What are the most popular routes from London Heathrow Airport to Region of Ontario?

The most popular flight routes from London Heathrow Airport to Region of Ontario are London Heathrow - Toronto Pearson Intl, London Heathrow - Toronto Island and London Heathrow - Montreal Pierre Elliott Trudeau Intl.

What are the cheapest flights from London Heathrow Airport to Region of Ontario?

Looking for the cheapest flight from London Heathrow Airport to Region of Ontario? While on average our users pay £1,557, our data indicates the cheapest price to be £310. The most popular route (London Heathrow - Toronto Pearson Intl), is priced around £375.

What are the most reliable airlines from London Heathrow Airport to Region of Ontario?

The top 3 most reliable airlines when flying from London Heathrow Airport to Region of Ontario are Singapore Airlines (86%), MEA (86%) and Thai Airways (84%).

What are the most popular airlines that fly from London Heathrow Airport to Region of Ontario?

Air Canada, Lufthansa and Virgin Atlantic are the most popular airlines when flying from London Heathrow Airport to Region of Ontario.

Can I find deals for flights from Heathrow to Ontario that include hotel bookings?

Yes. In addition to deals on Heathrow to Ontario flights, Cheapflights offers holiday packages that include both flights and hotel.

How can I find direct flights from Heathrow to Ontario?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Heathrow to Ontario.

Can I find deals for business class flights from Heathrow to Ontario?

Yes. Cheapflights offers flight deals from Heathrow to Ontario by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

£232+ Cheap Flights from London Heathrow Airport to Ontario

Cheap flight deals from Heathrow to Ontario

Enter your travel dates to find the best prices.

Cheapest

Best

Direct

Last-minute

One-way

Cheapest flights from Heathrow to Ontario
Explore the most affordable flight options available from Heathrow to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 19 August 2026.

Fri 4/907:25 -

1 stop16h 25m

Mon 28/913:10 -

1 stop12h 20m

Deal found 17/8£375

Sat 21/1106:50 -

1 stop9h 50m

Sat 28/1119:10 -

Nonstop7h 00m

Deal found 18/8£376

Mon 14/908:40 -

1 stop11h 20m

Mon 21/922:10 -

Nonstop6h 50m

Deal found 17/8£377

Wed 2/910:50 -

1 stop13h 00m

Wed 9/918:55 -

1 stop8h 40m

Deal found 18/8£378

Mon 31/809:30 -

1 stop11h 30m

Sun 13/916:40 -

1 stop10h 55m

Deal found 15/8£379

Fri 18/908:30 -

1 stop15h 55m

Sun 27/916:40 -

1 stop10h 55m

Deal found 18/8£380

Tue 1/920:25 -

1 stop27h 25m

Tue 8/922:00 -

1 stop18h 00m

Deal found 19/8£380

Sun 6/906:00 -

1 stop14h 00m

Tue 15/918:40 -

Nonstop6h 50m

Deal found 14/8£382

Thu 17/908:45 -

1 stop11h 15m

Mon 21/910:40 -

1 stop14h 50m

Deal found 16/8£383

Mon 14/908:40 -

1 stop11h 20m

Tue 22/921:20 -

1 stop30h 15m

Deal found 16/8£383

Sat 21/1106:00 -

1 stop15h 15m

Tue 24/1120:25 -

1 stop14h 55m

Deal found 14/8£392

Tue 15/906:50 -

1 stop10h 00m

Tue 29/921:35 -

Nonstop7h 00m

Deal found 16/8£393

Best flights from Heathrow to Ontario
Discover carefully curated flight deals from Heathrow to Ontario that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 19 August 2026.

Mon 14/908:40 -

1 stop11h 20m

Tue 22/920:40 -

2 stops14h 45m

Deal found 15/8£407

Wed 9/914:05 -

Nonstop7h 35m

Mon 21/922:10 -

Nonstop6h 50m

Deal found 14/8£409

Wed 16/907:30 -

2 stops14h 49m

Wed 23/915:25 -

2 stops14h 15m

Deal found 19/8£426

Wed 16/911:30 -

2 stops16h 57m

Mon 21/917:00 -

1 stop18h 35m

Deal found 16/8£434

Mon 14/915:50 -

2 stops22h 59m

Tue 22/910:30 -

2 stops17h 35m

Deal found 15/8£440

Thu 21/110:00 -

1 stop10h 35m

Mon 25/117:55 -

1 stop10h 05m

Deal found 14/8£465

Mon 28/906:50 -

2 stops13h 00m

Mon 5/1010:05 -

1 stop15h 30m

Deal found 14/8£477

Thu 3/912:40 -

1 stop24h 48m

Thu 10/919:30 -

1 stop30h 00m

Deal found 18/8£491

Wed 18/1114:50 -

1 stop28h 35m

Sun 22/1115:25 -

1 stop16h 25m

Deal found 17/8£850

Sat 12/906:50 -

2 stops17h 55m

Sat 3/1014:20 -

1 stop11h 35m

Deal found 14/8£426

Thu 10/909:30 -

1 stop10h 37m

Mon 14/920:15 -

Nonstop7h 20m

Deal found 15/8£428

Sat 7/1117:15 -

Nonstop8h 00m

Wed 18/1122:20 -

Nonstop7h 05m

Deal found 17/8£445

Thu 10/906:50 -

2 stops14h 20m

Thu 24/909:45 -

2 stops15h 10m

Deal found 16/8£427

Wed 23/912:05 -

Nonstop7h 50m

Sun 27/921:35 -

Nonstop7h 00m

Deal found 16/8£428

Wed 14/1008:40 -

2 stops19h 08m

Sun 18/1011:45 -

2 stops13h 45m

Deal found 14/8£491

Wed 30/909:30 -

2 stops17h 10m

Wed 7/1018:20 -

1 stop31h 15m

Deal found 16/8£496

Tue 29/907:00 -

1 stop12h 55m

Wed 28/1020:20 -

2 stops17h 30m

Deal found 16/8£515

Tue 1/906:50 -

2 stops15h 34m

Fri 11/913:10 -

1 stop11h 45m

Deal found 18/8£427

Sun 13/909:30 -

1 stop11h 03m

Sat 19/918:05 -

1 stop9h 30m

Deal found 18/8£431

Thu 1/1006:50 -

2 stops20h 58m

Sat 10/1018:20 -

1 stop10h 15m

Deal found 17/8£493

Tue 1/914:45 -

2 stops14h 35m

Mon 7/917:10 -

2 stops12h 35m

Deal found 18/8£543

Mon 28/906:50 -

2 stops13h 00m

Mon 5/1015:30 -

2 stops21h 20m

Deal found 14/8£505

Sat 12/906:50 -

2 stops15h 33m

Wed 30/908:30 -

2 stops16h 25m

Deal found 19/8£427

Sat 3/1006:50 -

2 stops21h 08m

Sat 10/1005:15 -

2 stops22h 20m

Deal found 19/8£494

Tue 1/914:45 -

2 stops14h 35m

Mon 7/917:10 -

1 stop9h 45m

Deal found 18/8£521

Mon 28/908:30 -

1 stop14h 13m

Mon 5/1015:30 -

1 stop12h 05m

Deal found 14/8£476

Mon 31/806:50 -

2 stops17h 06m

Sat 12/912:15 -

1 stop13h 30m

Deal found 16/8£438

Wed 30/906:30 -

2 stops16h 05m

Wed 7/1017:25 -

2 stops12h 20m

Deal found 16/8£601

Thu 8/1012:10 -

2 stops50h 12m

Mon 12/1019:45 -

2 stops36h 15m

Deal found 14/8£499

Thu 15/1007:30 -

2 stops16h 30m

Mon 19/1010:15 -

2 stops14h 40m

Deal found 15/8£443

Find flight deals from Heathrow to Ontario

Round-trip from	£375
One-way from	£232
Popular in	August
Cheapest in	February
Average price	£598
Good round-trip deal	£482 or less
Good one-way deal	£404 or less

Lufthansa
4/9-28/9
2 total stops
28h 45m total
London to Ontario

Search Deals

8/9
3 total stops
55h 35m total
London to Ontario

Search Deals

Highest demand for flights based on searches. 10% potential increase in price (£39 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease (£10 potential savings vs. average return price).

Search Deals

Average for round-trip flights in August 2026

Search Deals

Price to beat on a round-trip flight from London Heathrow to Ontario.

Search Deals

Price to beat on a one-way flight from London Heathrow to Ontario.

Search Deals

Cheapflights 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

LondonMontreal

LHR London Heathrow - YUL Montreal Pierre Elliott Trudeau Intl

LHRYUL

London Heathrow

Mon 14/9

08:40-15:00

1 stop11h 20m

Montreal Pierre Elliott Trudeau Intl

Tue 22/9

20:40-16:25

2 stops14h 45m

£407

Fastest return journey

LondonMontreal

LHR London Heathrow - YUL Montreal Pierre Elliott Trudeau Intl

LHRYUL

London Heathrow

Wed 9/9

14:05-16:40

Nonstop7h 35m

Montreal Pierre Elliott Trudeau Intl

Mon 21/9

22:10-10:00

Nonstop6h 50m

£409

LondonMontreal

LHR London Heathrow - YUL Montreal Pierre Elliott Trudeau Intl

LHRYUL

London Heathrow

Wed 16/9

07:30-17:19

2 stops14h 49m

Montreal Pierre Elliott Trudeau Intl

Wed 23/9

15:25-10:40

2 stops14h 15m

£426

LondonMontreal

LHR London Heathrow - YUL Montreal Pierre Elliott Trudeau Intl

LHRYUL

London Heathrow

Sat 12/9

06:50-19:45

2 stops17h 55m

Montreal Pierre Elliott Trudeau Intl

Sat 3/10

14:20-06:55

1 stop11h 35m

£426

LondonMontreal

LHR London Heathrow - YUL Montreal Pierre Elliott Trudeau Intl

LHRYUL

London Heathrow

Thu 10/9

06:50-16:10

2 stops14h 20m

Montreal Pierre Elliott Trudeau Intl

Thu 24/9

09:45-05:55

2 stops15h 10m

£427

LondonMontreal

LHR London Heathrow - YUL Montreal Pierre Elliott Trudeau Intl

LHRYUL

London Heathrow

Tue 1/9

06:50-17:24

2 stops15h 34m

Montreal Pierre Elliott Trudeau Intl

Fri 11/9

13:10-05:55

1 stop11h 45m

£427

LondonMontreal

LHR London Heathrow - YUL Montreal Pierre Elliott Trudeau Intl

LHRYUL

London Heathrow

Sat 12/9

06:50-17:23

2 stops15h 33m

Montreal Pierre Elliott Trudeau Intl

Wed 30/9

08:30-05:55

2 stops16h 25m

£427

LondonToronto

LHR London Heathrow - YYZ Toronto Pearson Intl

LHRYYZ

London Heathrow

Thu 10/9

09:30-15:07

1 stop10h 37m

Toronto Pearson Intl

Mon 14/9

20:15-08:35

Nonstop7h 20m

£428

LondonToronto

LHR London Heathrow - YYZ Toronto Pearson Intl

LHRYYZ

London Heathrow

Wed 23/9

12:05-14:55

Nonstop7h 50m

Toronto Pearson Intl

Sun 27/9

21:35-09:35

Nonstop7h 00m

£428

LondonToronto

LHR London Heathrow - YYZ Toronto Pearson Intl

LHRYYZ

London Heathrow

Sun 13/9

09:30-15:33

1 stop11h 03m

Toronto Pearson Intl

Sat 19/9

18:05-08:35

1 stop9h 30m

£431

Flights are sorted by cheapest return flights first.

Deals found on 15/8

Showing 1-10 of 60 resultsSorted by cheapest first

...

Best time to book a flight from Heathrow to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Heathrow with our price prediction graph.

LHR-YYZ

LHR-YTZ

LHR-YUL

LHR-YXU

LHR-YOW

Estimated return price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from London Heathrow Airport to Ontario

LHR-CAON

LHR-YYZ

LHR-YTZ

LHR-YUL

LHR-YXU

What is the cheapest month to book a flight from London Heathrow Airport to Region of Ontario?

Currently, February is the cheapest month in which you can book a flight from London Heathrow Airport to Region of Ontario (average of £412). Flying from London Heathrow Airport to Region of Ontario in August is currently the most expensive (average of £645). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from LHR to ON?

When flying from London Heathrow Airport to Region of Ontario, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Weekly flight availability from London Heathrow Airport to Region of Ontario

The most flights from LHR to CAON are scheduled on a Monday (39 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (20 on average).

How much does it cost for a return flight from London Heathrow Airport to Region of Ontario?

Airfare is below average for this route at the moment.

London Heathrow Airport to Region of Ontario flights typically cost between £547 and £762 in November.
The cheapest return price found within the last 5 days was £392 on SWISS (21 Nov–24 Nov).

How far ahead should I book a flight from London Heathrow Airport to Region of Ontario?

The best time to book flights from London Heathrow Airport to Region of Ontario is 62 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

Reviews of airlines servicing Ontario

Read reviews from past customers who have flown with Virgin Atlantic,Air Canada, andIcelandair from London Heathrow Airport to Ontario. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Virgin Atlantic

7.4

Good

695 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Edwin,May 2026

LHR - LAX

First time flying with Virgin. It was everything I hoped it would be.

Virgin Atlantic

7.4

Good

695 reviews

Virgin Atlantic

7.4

Good

695 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Edwin,May 2026

LHR - LAX

First time flying with Virgin. It was everything I hoped it would be.

Air Canada

7.1

Good

11,505 reviews

Virgin Atlantic

7.4

Good

695 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Edwin,May 2026

LHR - LAX

First time flying with Virgin. It was everything I hoped it would be.

Icelandair

6.9

Okay

731 reviews

Virgin Atlantic

7.4

Good

695 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Edwin,May 2026

LHR - LAX

First time flying with Virgin. It was everything I hoped it would be.

Lufthansa

6.8

Okay

8,202 reviews

Virgin Atlantic

7.4

Good

695 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Edwin,May 2026

LHR - LAX

First time flying with Virgin. It was everything I hoped it would be.

British Airways

6.7

Okay

8,179 reviews

Virgin Atlantic

7.4

Good

695 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Edwin,May 2026

LHR - LAX

First time flying with Virgin. It was everything I hoped it would be.

Related info for your journey

How long is the flight from London Heathrow Airport to Region of Ontario?
Airlines like Air Canada, SWISS, and Lufthansa fly from London Heathrow Airport to Region of Ontario in about 7h 35m. The time it takes to get you to your destination can typically vary by up to 12h 01m. There are 3239 mi between London Heathrow Airport and Region of Ontario. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.
What are the cheapest airlines to fly from London Heathrow Airport to Region of Ontario one-way?
To fly one-way, consider booking your trip with KLM, which is currently one of the cheapest options available, starting at £180. Icelandair flights start at £198 while deals on TAP AIR PORTUGAL start at £220 one-way.
What are the most popular routes from London Heathrow Airport to Region of Ontario?
The most popular flight routes from London Heathrow Airport to Region of Ontario are London Heathrow - Toronto Pearson Intl, London Heathrow - Toronto Island and London Heathrow - Montreal Pierre Elliott Trudeau Intl.
What are the most reliable airlines from London Heathrow Airport to Region of Ontario?
The top 3 most reliable airlines when flying from London Heathrow Airport to Region of Ontario are Singapore Airlines (86%), MEA (86%) and Thai Airways (84%).
What are the cheapest flights from London Heathrow Airport to Region of Ontario?
Looking for the cheapest flight from London Heathrow Airport to Region of Ontario? While on average our users pay £1,557, our data indicates the cheapest price to be £310. The most popular route (London Heathrow - Toronto Pearson Intl), is priced around £375.
Can I find deals for flights from Heathrow to Ontario that include hotel bookings?
Yes. In addition to deals on Heathrow to Ontario flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Heathrow to Ontario?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Heathrow to Ontario.
Can I find deals for business class flights from Heathrow to Ontario?
Yes. Cheapflights offers flight deals from Heathrow to Ontario by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from London Heathrow Airport to Region of Ontario?
Currently, February is the cheapest month in which you can book a flight from London Heathrow Airport to Region of Ontario (average of £412). Flying from London Heathrow Airport to Region of Ontario in August is currently the most expensive (average of £645). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for Heathrow to Ontario

Heathrow to Vancouver Intl flights

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Heathrow to Toronto Island flights

Stansted to Pearson Intl flights

London City to Vancouver Intl flights

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Luton to Pearson Intl flights

Stansted to Vancouver Intl flights

Heathrow to Pierre Elliott Trudeau Intl flights

Gatwick to Toronto Island flights

Heathrow to Abbotsford flights

Gatwick to Calgary flights

Gatwick to Pierre Elliott Trudeau Intl flights

London City to Calgary flights

Luton to Vancouver Intl flights

Heathrow to Halifax flights

London City to Pierre Elliott Trudeau Intl flights

Stansted to Pierre Elliott Trudeau Intl flights

Southend to Pearson Intl flights

Stansted to Calgary flights

Luton to Pierre Elliott Trudeau Intl flights

Luton to Calgary flights

Heathrow to Ottawa flights

Gatwick to Abbotsford flights

Heathrow to Québec City flights

Heathrow to Edmonton flights

Heathrow to Winnipeg flights

Gatwick to Ottawa flights

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Gatwick to Québec City flights

Gatwick to Kelowna flights

Gatwick to Winnipeg flights

Heathrow to Comox flights

London City to Edmonton flights

London City to Halifax flights

Stansted to Halifax flights

Heathrow to London flights

Heathrow to Victoria flights

London City to Winnipeg flights

Heathrow to Saskatoon flights

Luton to Halifax flights

London City to Kelowna flights

Gatwick to Victoria flights

Top 10 airlines flying from Heathrow to Ontario

Airline	Cheapest	Average	Flexibility	On-time
ITA Airways	Cheapest£262	Average£667	FlexibilityNo cancel fee	On-time81%	Search ITA Airways flights
Icelandair	Cheapest£311	Average£420	FlexibilityNo cancel fee	On-time76%	Search Icelandair flights
Air Transat	Cheapest£329	Average£511	FlexibilityNo cancel fee	On-time50%	Search Air Transat flights
TAP AIR PORTUGAL	Cheapest£332	Average£553	FlexibilityNo cancel fee	On-timeN/A	Search TAP AIR PORTUGAL flights
Virgin Atlantic	Cheapest£336	Average£543	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic flights
Air Canada	Cheapest£337	Average£568	FlexibilityNo cancel fee	On-time67%	Search Air Canada flights
American Airlines	Cheapest£345	Average£658	FlexibilityNo cancel fee	On-time71%	Search American Airlines flights
British Airways	Cheapest£361	Average£532	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
Aer Lingus	Cheapest£361	Average£560	FlexibilityNo cancel fee	On-timeN/A	Search Aer Lingus flights
Lufthansa	Cheapest£363	Average£545	FlexibilityNo cancel fee	On-time76%	Search Lufthansa flights

Fly with Cheapflights

How does Cheapflights help users find flights from Heathrow to Ontario?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Ontario from Heathrow today with Cheapflights!

Why should you use Cheapflights to find cheap flight tickets from Heathrow to Ontario?

Millions of users choose and trust Cheapflights to book the best flight deals from Heathrow to Ontario for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

Can Cheapflights find flights from Heathrow to Ontario with no change fees?

Need flexible booking options for your flight to Ontario from Heathrow? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from Heathrow to Ontario become cheaper?

Of course! You can now track prices for flights from Heathrow to Ontario and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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Cheap flights from London Heathrow Airport to Ontario from £232

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/9. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Heathrow to Ontario

Cheapest flights from Heathrow to OntarioExplore the most affordable flight options available from Heathrow to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 19 August 2026.

Explore the most affordable flight options available from Heathrow to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 19 August 2026.

Best flights from Heathrow to OntarioDiscover carefully curated flight deals from Heathrow to Ontario that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 19 August 2026.

Discover carefully curated flight deals from Heathrow to Ontario that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 19 August 2026.

Direct flights from Heathrow to OntarioExplore direct flight options from Heathrow to Ontario based on user searches, and compare prices and availability for your desired travel dates. Data last updated 19 August 2026.

Explore direct flight options from Heathrow to Ontario based on user searches, and compare prices and availability for your desired travel dates. Data last updated 19 August 2026.

Last-minute flights from Heathrow to OntarioDiscover last-minute flight deals from Heathrow to Ontario. Data last updated 19 August 2026 and is based on user searches.

Discover last-minute flight deals from Heathrow to Ontario. Data last updated 19 August 2026 and is based on user searches.

One-way flights from Heathrow to OntarioSearch for one-way flight options from Heathrow to Ontario. Find affordable one-way fares based on user searches. Data last updated 19 August 2026.

Search for one-way flight options from Heathrow to Ontario. Find affordable one-way fares based on user searches. Data last updated 19 August 2026.

Find flight deals from Heathrow to Ontario

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

Cheapflights Fare Finder

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

Best time to book a flight from Heathrow to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Heathrow with our price prediction graph.

Cheapflights Insights

What is the cheapest month to book a flight from London Heathrow Airport to Region of Ontario?

What is the cheapest time of day to fly from LHR to ON?

Find hourly flight availability from Heathrow to Ontario. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 19 August 2026.

When flying from London Heathrow Airport to Region of Ontario, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Weekly flight availability from London Heathrow Airport to Region of Ontario

Explore weekly flight availability from Heathrow to Ontario. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 19 August 2026.

The most flights from LHR to CAON are scheduled on a Monday (39 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (20 on average).

How much does it cost for a return flight from London Heathrow Airport to Region of Ontario?

Airfare is below average for this route at the moment.

London Heathrow Airport to Region of Ontario flights typically cost between £547 and £762 in November.The cheapest return price found within the last 5 days was £392 on SWISS (21 Nov–24 Nov).

How far ahead should I book a flight from London Heathrow Airport to Region of Ontario?

The best time to book flights from London Heathrow Airport to Region of Ontario is 62 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

Reviews of airlines servicing Ontario

Read reviews from past customers who have flown with Virgin Atlantic,Air Canada, andIcelandair from London Heathrow Airport to Ontario. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

How long is the flight from London Heathrow Airport to Region of Ontario?

What are the cheapest airlines to fly from London Heathrow Airport to Region of Ontario one-way?

What are the most popular routes from London Heathrow Airport to Region of Ontario?

What are the most reliable airlines from London Heathrow Airport to Region of Ontario?

What are the cheapest flights from London Heathrow Airport to Region of Ontario?

Can I find deals for flights from Heathrow to Ontario that include hotel bookings?

How can I find direct flights from Heathrow to Ontario?

Can I find deals for business class flights from Heathrow to Ontario?

What is the cheapest month to book a flight from London Heathrow Airport to Region of Ontario?

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Alternative routes for Heathrow to Ontario

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Complete your trip

Complete your trip to Ontario by adding a car hire and/or hotel booking to your travel itinerary.

Direct flights to Canada

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Heathrow and Ontario flights

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Heathrow to Ontario flights

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Top 10 airlines flying from Heathrow to Ontario

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Cheapest flights from Heathrow to Ontario
Explore the most affordable flight options available from Heathrow to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 19 August 2026.

Best flights from Heathrow to Ontario
Discover carefully curated flight deals from Heathrow to Ontario that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 19 August 2026.

Direct flights from Heathrow to Ontario
Explore direct flight options from Heathrow to Ontario based on user searches, and compare prices and availability for your desired travel dates. Data last updated 19 August 2026.

Last-minute flights from Heathrow to Ontario
Discover last-minute flight deals from Heathrow to Ontario. Data last updated 19 August 2026 and is based on user searches.

One-way flights from Heathrow to Ontario
Search for one-way flight options from Heathrow to Ontario. Find affordable one-way fares based on user searches. Data last updated 19 August 2026.

London Heathrow Airport to Region of Ontario flights typically cost between £547 and £762 in November.
The cheapest return price found within the last 5 days was £392 on SWISS (21 Nov–24 Nov).