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

Airlines like United Airlines, Lufthansa, and Air Canada fly from London Heathrow Airport to Region of Ontario in about 15h 48m. The time it takes to get you to your destination can typically vary by up to 42m. There are 3631 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 Icelandair, which is currently one of the cheapest options available, starting at £146. KLM flights start at £180 while deals on British Airways start at £227 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 £1,492, our data indicates the cheapest price to be £309. The most popular route (London Heathrow - Toronto Pearson Intl), is priced around £281.

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 (91%), MEA (90%) and SriLankan Airlines (86%).

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 4 September 2026.

Fri 16/1012:40 -

1 stop10h 38m

Sun 25/1016:40 -

1 stop11h 50m

Deal found 4/9£372

Thu 22/1020:05 -

1 stop23h 55m

Tue 27/1017:40 -

2 stops16h 00m

Deal found 4/9£373

Thu 24/907:00 -

1 stop12h 55m

Fri 23/1013:30 -

1 stop26h 30m

Deal found 3/9£374

Mon 19/1006:00 -

2 stops18h 21m

Mon 26/1019:50 -

2 stops16h 30m

Deal found 4/9£375

Fri 16/1012:40 -

1 stop10h 38m

Sun 25/1016:40 -

1 stop11h 50m

Deal found 1/9£375

Thu 17/906:00 -

1 stop14h 00m

Mon 21/916:40 -

1 stop10h 15m

Deal found 3/9£377

Wed 21/1008:40 -

2 stops15h 41m

Tue 27/1017:40 -

2 stops16h 00m

Deal found 2/9£380

Tue 15/920:25 -

1 stop27h 25m

Sat 26/918:40 -

Nonstop6h 50m

Deal found 2/9£380

Thu 17/906:00 -

1 stop14h 00m

Mon 21/916:40 -

1 stop10h 15m

Deal found 3/9£381

Fri 11/908:50 -

1 stop12h 00m

Thu 17/917:35 -

1 stop11h 45m

Deal found 4/9£383

Wed 16/911:45 -

2 stops25h 30m

Mon 28/915:20 -

2 stops14h 25m

Deal found 4/9£384

Sat 26/1213:00 -

1 stop11h 56m

Sat 9/116:30 -

1 stop9h 40m

Deal found 3/9£384

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 4 September 2026.

Tue 15/907:30 -

2 stops16h 30m

Tue 29/912:25 -

2 stops13h 30m

Deal found 3/9£393

Fri 2/1010:45 -

1 stop11h 35m

Thu 28/117:45 -

1 stop10h 15m

Deal found 31/8£416

Wed 14/1006:55 -

2 stops15h 48m

Wed 21/1015:30 -

1 stop15h 20m

Deal found 30/8£429

Thu 15/1006:00 -

2 stops16h 13m

Mon 19/1011:45 -

1 stop13h 50m

Deal found 2/9£432

Wed 14/1008:40 -

2 stops15h 02m

Wed 21/1010:05 -

1 stop18h 30m

Deal found 30/8£442

Tue 6/1010:05 -

2 stops18h 24m

Thu 15/1018:25 -

1 stop12h 50m

Deal found 1/9£461

Fri 16/1008:40 -

2 stops15h 41m

Fri 23/1016:40 -

2 stops16h 00m

Deal found 1/9£489

Thu 17/908:20 -

2 stops21h 00m

Sat 19/906:55 -

2 stops44h 55m

Deal found 3/9£608

Fri 16/1014:20 -

2 stops24h 36m

Sun 25/1014:15 -

1 stop12h 00m

Deal found 30/8£644

Mon 14/1214:50 -

1 stop28h 35m

Thu 24/1215:25 -

1 stop16h 25m

Deal found 1/9£749

Thu 8/1006:50 -

2 stops17h 10m

Sat 24/1019:00 -

1 stop11h 25m

Deal found 3/9£394

Thu 24/906:50 -

2 stops22h 04m

Thu 1/1013:00 -

1 stop14h 30m

Deal found 3/9£394

Fri 16/1008:40 -

2 stops15h 02m

Fri 23/1019:25 -

1 stop11h 25m

Deal found 1/9£439

Thu 15/1008:45 -

2 stops14h 57m

Thu 22/1019:25 -

1 stop11h 25m

Deal found 31/8£452

Mon 26/1006:35 -

2 stops16h 10m

Mon 2/1119:20 -

1 stop32h 10m

Deal found 30/8£453

Mon 5/1006:50 -

2 stops17h 12m

Mon 12/1019:00 -

1 stop21h 25m

Deal found 3/9£395

Fri 13/1109:00 -

2 stops18h 36m

Sat 21/1117:15 -

1 stop10h 15m

Deal found 1/9£440

Wed 16/914:10 -

2 stops25h 38m

Sun 20/918:25 -

1 stop12h 25m

Deal found 31/8£454

Sat 14/1120:15 -

2 stops31h 21m

Tue 24/1117:15 -

1 stop32h 15m

Deal found 3/9£462

Thu 15/1008:45 -

2 stops19h 13m

Thu 22/1005:15 -

1 stop22h 20m

Deal found 31/8£440

Sat 27/207:30 -

2 stops16h 49m

Fri 5/309:30 -

1 stop18h 40m

Deal found 30/8£401

Sat 17/1020:05 -

2 stops27h 37m

Sat 24/1019:25 -

1 stop11h 55m

Deal found 2/9£454

Thu 5/1111:45 -

2 stops17h 59m

Thu 6/517:10 -

2 stops12h 35m

Deal found 3/9£558

Thu 1/1014:05 -

Nonstop7h 35m

Tue 20/1022:10 -

Nonstop6h 50m

Deal found 2/9£477

Sat 27/207:30 -

2 stops18h 16m

Sat 6/316:20 -

1 stop11h 50m

Deal found 30/8£401

Thu 15/1006:00 -

2 stops16h 43m

Thu 22/1015:30 -

1 stop12h 05m

Deal found 31/8£442

Tue 6/1006:50 -

2 stops13h 00m

Mon 26/1015:25 -

1 stop15h 55m

Deal found 30/8£457

Thu 15/1006:50 -

2 stops17h 07m

Sat 24/1015:15 -

2 stops26h 05m

Deal found 4/9£401

Sun 18/1006:00 -

2 stops17h 42m

Sun 25/1019:20 -

2 stops21h 40m

Deal found 3/9£443

Fri 16/1007:25 -

2 stops15h 18m

Fri 23/1015:30 -

2 stops13h 30m

Deal found 31/8£464

Find flight deals from Heathrow to Ontario

Round-trip from	£372
One-way from	£232
Popular in	August
Cheapest in	February
Average price	£415
Good round-trip deal	£436 or less
Good one-way deal	£357 or less

Air Canada
16/10-25/10
2 total stops
22h 28m total
London to Ontario

Search Deals

21/9-31/12
3 total stops
31h 38m total
London to Ontario

Search Deals

Highest demand for flights based on searches. 9% potential increase in price (£38 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease (£8 potential savings vs. average return price).

Search Deals

Average for round-trip flights in September 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

LondonOttawa

LHR London Heathrow - YOW Ottawa

LHRYOW

London Heathrow

Mon 21/9

18:45-07:50

2 stops42h 05m

Ottawa

Wed 31/12

00:00-06:00

Nonstop0h 00m

£239

LondonOttawa

LHR London Heathrow - YOW Ottawa

LHRYOW

London Heathrow

Fri 20/11

15:15-00:01

2 stops37h 46m

Ottawa

Wed 31/12

00:00-06:00

Nonstop0h 00m

£298

LondonToronto

LHR London Heathrow - YYZ Toronto Pearson Intl

LHRYYZ

London Heathrow

Wed 7/10

18:40-12:50

1 stop23h 10m

Toronto Pearson Intl

Wed 31/12

00:00-06:00

Nonstop0h 00m

£304

LondonMontreal

LHR London Heathrow - YUL Montreal Pierre Elliott Trudeau Intl

LHRYUL

London Heathrow

Mon 14/9

20:50-17:20

1 stop25h 30m

Montreal Pierre Elliott Trudeau Intl

Wed 31/12

00:00-06:00

Nonstop0h 00m

£304

LondonToronto

LHR London Heathrow - YYZ Toronto Pearson Intl

LHRYYZ

London Heathrow

Tue 6/10

20:05-16:10

1 stop25h 05m

Toronto Pearson Intl

Wed 31/12

00:00-06:00

Nonstop0h 00m

£305

LondonToronto

LHR London Heathrow - YTZ Toronto Island

LHRYTZ

London Heathrow

Sat 19/9

09:30-15:50

1 stop11h 20m

Toronto Island

Wed 31/12

00:00-06:00

Nonstop0h 00m

£329

LondonToronto

LHR London Heathrow - YYZ Toronto Pearson Intl

LHRYYZ

London Heathrow

Wed 2/12

11:10-23:29

2 stops17h 19m

Toronto Pearson Intl

Wed 31/12

00:00-06:00

Nonstop0h 00m

£329

LondonToronto

LHR London Heathrow - YYZ Toronto Pearson Intl

LHRYYZ

London Heathrow

Fri 25/9

06:50-14:19

2 stops36h 29m

Toronto Pearson Intl

Wed 31/12

00:00-06:00

Nonstop0h 00m

£330

LondonToronto

LHR London Heathrow - YYZ Toronto Pearson Intl

LHRYYZ

London Heathrow

Wed 30/9

07:30-22:23

2 stops19h 53m

Toronto Pearson Intl

Wed 31/12

00:00-06:00

Nonstop0h 00m

£330

LondonToronto

LHR London Heathrow - YYZ Toronto Pearson Intl

LHRYYZ

London Heathrow

Mon 5/10

06:50-11:20

2 stops33h 30m

Toronto Pearson Intl

Wed 31/12

00:00-06:00

Nonstop0h 00m

£330

Flights are sorted by cheapest return flights first.

Deals found on 31/8

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-YUL

LHR-YYZ

LHR-YTZ

LHR-YXU

LHR-YQT

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-YUL

LHR-YYZ

LHR-YTZ

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 £413). 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 Wednesday (34 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (11 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 £394 and £534 in October.
The cheapest return price found within the last 5 days was £383 on Multiple Airlines (24 Oct–31 Oct).

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 84 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

696 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

696 reviews

Virgin Atlantic

7.4

Good

696 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

11,581 reviews

Virgin Atlantic

7.4

Good

696 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

740 reviews

Virgin Atlantic

7.4

Good

696 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

8,223 reviews

Virgin Atlantic

7.4

Good

696 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

8,204 reviews

Virgin Atlantic

7.4

Good

696 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 United Airlines, Lufthansa, and Air Canada fly from London Heathrow Airport to Region of Ontario in about 15h 48m. The time it takes to get you to your destination can typically vary by up to 42m. There are 3631 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 Icelandair, which is currently one of the cheapest options available, starting at £146. KLM flights start at £180 while deals on British Airways start at £227 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 (91%), MEA (90%) and SriLankan Airlines (86%).
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 £1,492, our data indicates the cheapest price to be £309. The most popular route (London Heathrow - Toronto Pearson Intl), is priced around £281.
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 £413). 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

Heathrow to Pearson Intl flights

Gatwick to Pearson Intl flights

Heathrow to Calgary flights

Heathrow to Toronto Island flights

London City to Pearson Intl flights

Heathrow to Pierre Elliott Trudeau Intl flights

Stansted to Pearson Intl flights

Gatwick to Vancouver Intl flights

Luton to Pearson Intl flights

London City to Vancouver Intl flights

Heathrow to Abbotsford flights

Stansted to Vancouver Intl flights

Heathrow to Halifax flights

Gatwick to Pierre Elliott Trudeau Intl flights

Gatwick to Toronto Island flights

London City to Pierre Elliott Trudeau Intl flights

Gatwick to Calgary flights

Stansted to Pierre Elliott Trudeau Intl flights

London City to Calgary flights

Luton to Pierre Elliott Trudeau Intl flights

Luton to Vancouver Intl flights

London City to Halifax flights

Luton to Calgary flights

Stansted to Calgary flights

Heathrow to Ottawa flights

Gatwick to Halifax flights

Southend to Pearson Intl flights

Heathrow to Edmonton flights

Heathrow to Winnipeg flights

Stansted to Halifax flights

Gatwick to Edmonton flights

London City to Ottawa flights

Gatwick to Ottawa flights

London City to Edmonton flights

Heathrow to Kelowna flights

Heathrow to Comox flights

Gatwick to Québec City flights

Gatwick to Winnipeg flights

London City to Winnipeg flights

Gatwick to Abbotsford flights

Heathrow to Québec City flights

Luton to Halifax flights

Gatwick to Kelowna flights

Heathrow to Victoria flights

London City to Kelowna flights

Heathrow to Saskatoon flights

Stansted to Edmonton flights

Top 10 airlines flying from Heathrow to Ontario

Airline	Cheapest	Average	Flexibility	On-time
ITA Airways	Cheapest£262	Average£669	FlexibilityNo cancel fee	On-time81%	Search ITA Airways flights
Icelandair	Cheapest£311	Average£419	FlexibilityNo cancel fee	On-time76%	Search Icelandair flights
Air Canada	Cheapest£317	Average£577	FlexibilityNo cancel fee	On-time67%	Search Air Canada flights
Air Transat	Cheapest£331	Average£512	FlexibilityNo cancel fee	On-time50%	Search Air Transat flights
TAP AIR PORTUGAL	Cheapest£332	Average£556	FlexibilityNo cancel fee	On-timeN/A	Search TAP AIR PORTUGAL flights
Virgin Atlantic	Cheapest£334	Average£545	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic flights
American Airlines	Cheapest£346	Average£700	FlexibilityNo cancel fee	On-time71%	Search American Airlines flights
Air France	Cheapest£353	Average£517	FlexibilityNo cancel fee	On-time77%	Search Air France flights
Aer Lingus	Cheapest£360	Average£552	FlexibilityNo cancel fee	On-timeN/A	Search Aer Lingus flights
British Airways	Cheapest£362	Average£531	FlexibilityNo cancel fee	On-time70%	Search British Airways 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 retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 21/9. 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 4 September 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 4 September 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 4 September 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 4 September 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 4 September 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 4 September 2026.

Last-minute flights from Heathrow to OntarioDiscover last-minute flight deals from Heathrow to Ontario. Data last updated 4 September 2026 and is based on user searches.

Discover last-minute flight deals from Heathrow to Ontario. Data last updated 4 September 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 4 September 2026.

Search for one-way flight options from Heathrow to Ontario. Find affordable one-way fares based on user searches. Data last updated 4 September 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 4 September 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 4 September 2026.

The most flights from LHR to CAON are scheduled on a Wednesday (34 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (11 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 £394 and £534 in October.The cheapest return price found within the last 5 days was £383 on Multiple Airlines (24 Oct–31 Oct).

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 84 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?

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Heathrow and Ontario flights

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Heathrow to Ontario flights

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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 4 September 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 4 September 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 4 September 2026.

Last-minute flights from Heathrow to Ontario
Discover last-minute flight deals from Heathrow to Ontario. Data last updated 4 September 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 4 September 2026.

London Heathrow Airport to Region of Ontario flights typically cost between £394 and £534 in October.
The cheapest return price found within the last 5 days was £383 on Multiple Airlines (24 Oct–31 Oct).