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

Airlines like British Airways, United Airlines, and KLM fly from London Heathrow Airport to Region of Ontario in about 11h 30m. The time it takes to get you to your destination can typically vary by up to 13h 35m. There are 3320 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 £149. KLM flights start at £184 while deals on British Airways start at £232 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 £1,010, our data indicates the cheapest price to be £304. The most popular route (London Heathrow - Toronto Pearson Intl), is priced around £339.

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 MEA (90%), Singapore Airlines (89%) and SriLankan Airlines (85%).

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.

£245+ 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 October 2026.

Thu 29/1015:00 -

Nonstop8h 00m

Thu 5/1117:35 -

1 stop10h 45m

Deal found 29/9£359

Sun 1/1106:50 -

2 stops18h 06m

Sun 29/1118:55 -

1 stop30h 35m

Deal found 29/9£359

Wed 4/1106:00 -

1 stop12h 45m

Mon 9/1107:10 -

2 stops32h 50m

Deal found 29/9£360

Wed 4/1113:00 -

1 stop13h 36m

Fri 20/1116:35 -

1 stop9h 35m

Deal found 29/9£360

Fri 9/1014:05 -

1 stop10h 48m

Fri 16/1006:40 -

1 stop9h 20m

Deal found 28/9£361

Thu 8/1009:30 -

1 stop10h 30m

Wed 14/1018:55 -

1 stop8h 40m

Deal found 29/9£361

Fri 9/1014:05 -

1 stop10h 48m

Fri 23/1006:40 -

1 stop9h 20m

Deal found 29/9£362

Thu 15/1012:40 -

2 stops34h 40m

Fri 23/1012:20 -

2 stops27h 40m

Deal found 28/9£362

Sat 10/1008:55 -

1 stop11h 55m

Wed 14/1022:55 -

Nonstop7h 15m

Deal found 29/9£362

Thu 22/1012:40 -

2 stops29h 35m

Tue 27/1010:20 -

2 stops30h 40m

Deal found 29/9£362

Thu 8/1017:50 -

Nonstop7h 50m

Wed 14/1022:55 -

Nonstop7h 15m

Deal found 30/9£363

Tue 6/1012:40 -

2 stops27h 15m

Sun 11/1008:20 -

2 stops31h 40m

Deal found 30/9£363

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 October 2026.

Thu 26/1119:45 -

1 stop25h 05m

Sat 5/1222:20 -

Nonstop7h 05m

Deal found 3/10£369

Thu 22/1017:50 -

1 stop11h 30m

Fri 30/1018:25 -

1 stop9h 30m

Deal found 28/9£388

Tue 10/1107:30 -

2 stops15h 19m

Sun 22/1114:35 -

2 stops13h 35m

Deal found 29/9£395

Thu 22/1017:50 -

1 stop11h 30m

Fri 30/1018:25 -

2 stops13h 40m

Deal found 28/9£411

Sat 7/1108:40 -

1 stop12h 00m

Thu 19/1121:45 -

Nonstop7h 05m

Deal found 3/10£428

Fri 13/1109:00 -

2 stops14h 45m

Fri 20/1119:20 -

2 stops20h 40m

Deal found 29/9£434

Fri 9/1017:50 -

Nonstop7h 50m

Tue 20/1023:30 -

1 stop12h 05m

Deal found 2/10£457

Tue 27/1011:10 -

1 stop11h 35m

Tue 3/1119:20 -

1 stop30h 10m

Deal found 29/9£479

Thu 19/1119:50 -

2 stops24h 50m

Thu 26/1117:10 -

2 stops16h 25m

Deal found 2/10£500

Sat 7/1114:50 -

1 stop28h 35m

Tue 17/1115:25 -

1 stop16h 25m

Deal found 30/9£787

Sat 7/1107:50 -

1 stop13h 00m

Sat 14/1117:20 -

2 stops12h 20m

Deal found 3/10£412

Wed 14/1012:15 -

1 stop11h 42m

Wed 21/1015:15 -

1 stop10h 40m

Deal found 29/9£424

Sat 28/1106:30 -

1 stop14h 10m

Sat 5/1221:45 -

Nonstop7h 05m

Deal found 3/10£429

Fri 13/1106:00 -

2 stops21h 36m

Fri 20/1117:15 -

1 stop13h 05m

Deal found 29/9£436

Fri 13/1109:00 -

2 stops14h 45m

Fri 20/1119:20 -

1 stop32h 10m

Deal found 29/9£436

Tue 24/1108:55 -

2 stops19h 02m

Mon 14/1214:25 -

1 stop11h 25m

Deal found 1/10£476

Thu 19/1116:10 -

Nonstop7h 55m

Thu 26/1121:45 -

Nonstop7h 05m

Deal found 1/10£443

Thu 29/1013:00 -

2 stops25h 11m

Thu 12/1117:10 -

2 stops18h 10m

Deal found 29/9£447

Tue 27/1013:00 -

2 stops24h 55m

Tue 3/1110:35 -

2 stops24h 45m

Deal found 29/9£479

Wed 7/1008:30 -

Nonstop7h 45m

Wed 14/1018:35 -

Nonstop7h 00m

Deal found 30/9£530

Sat 7/1115:35 -

2 stops29h 05m

Fri 13/1117:10 -

1 stop17h 50m

Deal found 29/9£532

Mon 2/1109:00 -

2 stops14h 45m

Sun 8/1110:35 -

2 stops21h 25m

Deal found 30/9£464

Fri 13/1106:20 -

1 stop13h 40m

Fri 20/1117:25 -

1 stop9h 30m

Deal found 29/9£532

Thu 29/1016:20 -

2 stops33h 39m

Mon 2/1116:46 -

1 stop14h 14m

Deal found 29/9£572

Thu 5/1112:45 -

1 stop15h 09m

Sun 6/1206:20 -

1 stop23h 05m

Deal found 3/10£624

Mon 14/1208:00 -

2 stops19h 18m

Sun 27/1214:40 -

2 stops35h 00m

Deal found 1/10£573

Thu 22/1010:15 -

1 stop17h 58m

Wed 28/1006:05 -

2 stops23h 15m

Deal found 1/10£578

Mon 15/313:00 -

1 stop13h 32m

Wed 24/310:15 -

Nonstop6h 45m

Deal found 1/10£657

Thu 5/1112:45 -

1 stop15h 09m

Thu 10/1206:20 -

1 stop23h 05m

Deal found 3/10£624

Sat 31/1016:20 -

2 stops25h 51m

Sat 7/1114:00 -

1 stop11h 40m

Deal found 1/10£573

Find flight deals from Heathrow to Ontario

Round-trip from	£359
One-way from	£245
Popular in	August
Cheapest in	February
Average price	£461
Good round-trip deal	£398 or less
Good one-way deal	£340 or less

British Airways
14/1-21/1
Nonstop
15h 10m total
London to Ontario

Search Deals

TAP AIR PORTUGAL
14/12-31/12
1 total stop
36h 05m total
London to Ontario

Search Deals

Highest demand for flights based on searches. 10% potential increase in price (£42 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 October 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

LondonToronto

LHR London Heathrow - YYZ Toronto Pearson Intl

LHRYYZ

London Heathrow

Thu 15/10

06:00-12:50

1 stop11h 50m

Toronto Pearson Intl

Wed 31/12

00:00-06:00

Nonstop0h 00m

£302

LondonToronto

LHR London Heathrow - YTZ Toronto Island

LHRYTZ

London Heathrow

Mon 30/11

09:00-19:56

2 stops15h 56m

Toronto Island

Wed 31/12

00:00-06:00

Nonstop0h 00m

£302

LondonToronto

LHR London Heathrow - YYZ Toronto Pearson Intl

LHRYYZ

London Heathrow

Wed 21/10

18:40-12:50

1 stop23h 10m

Toronto Pearson Intl

Wed 31/12

00:00-06:00

Nonstop0h 00m

£302

LondonToronto

LHR London Heathrow - YYZ Toronto Pearson Intl

LHRYYZ

London Heathrow

Sat 7/11

20:05-16:15

1 stop25h 10m

Toronto Pearson Intl

Wed 31/12

00:00-06:00

Nonstop0h 00m

£303

LondonToronto

LHR London Heathrow - YYZ Toronto Pearson Intl

LHRYYZ

London Heathrow

Mon 16/11

09:00-16:15

1 stop12h 15m

Toronto Pearson Intl

Wed 31/12

00:00-06:00

Nonstop0h 00m

£304

LondonToronto

LHR London Heathrow - YYZ Toronto Pearson Intl

LHRYYZ

London Heathrow

Tue 17/11

20:05-16:15

1 stop25h 10m

Toronto Pearson Intl

Wed 31/12

00:00-06:00

Nonstop0h 00m

£313

LondonToronto

LHR London Heathrow - YYZ Toronto Pearson Intl

LHRYYZ

London Heathrow

Sat 14/11

07:30-17:49

2 stops15h 19m

Toronto Pearson Intl

Wed 31/12

00:00-06:00

Nonstop0h 00m

£330

LondonToronto

LHR London Heathrow - YYZ Toronto Pearson Intl

LHRYYZ

London Heathrow

Thu 8/10

06:50-22:23

2 stops20h 33m

Toronto Pearson Intl

Wed 31/12

00:00-06:00

Nonstop0h 00m

£331

LondonToronto

LHR London Heathrow - YYZ Toronto Pearson Intl

LHRYYZ

London Heathrow

Tue 20/10

06:50-21:30

2 stops19h 40m

Toronto Pearson Intl

Wed 31/12

00:00-06:00

Nonstop0h 00m

£331

LondonToronto

LHR London Heathrow - YTZ Toronto Island

LHRYTZ

London Heathrow

Wed 28/10

06:50-18:57

2 stops16h 07m

Toronto Island

Wed 31/12

00:00-06:00

Nonstop0h 00m

£331

Flights are sorted by cheapest return flights first.

Deals found on 30/9

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-YOW

LHR-YQT

LHR-YXU

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-YOW

LHR-YQT

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 £429). Flying from London Heathrow Airport to Region of Ontario in August is currently the most expensive (average of £662). 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 Friday (40 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (22 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 £401 and £568 in January.
The cheapest return price found within the last 5 days was £359 on British Airways (14 Jan–21 Jan).

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,Aer Lingus, andAir Canada 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

694 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

694 reviews

Virgin Atlantic

7.4

Good

694 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.

Aer Lingus

7.3

Good

1,811 reviews

Virgin Atlantic

7.4

Good

694 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

11,718 reviews

Virgin Atlantic

7.4

Good

694 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

8,256 reviews

Virgin Atlantic

7.4

Good

694 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

8,244 reviews

Virgin Atlantic

7.4

Good

694 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 British Airways, United Airlines, and KLM fly from London Heathrow Airport to Region of Ontario in about 11h 30m. The time it takes to get you to your destination can typically vary by up to 13h 35m. There are 3320 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 £149. KLM flights start at £184 while deals on British Airways start at £232 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 MEA (90%), Singapore Airlines (89%) and SriLankan Airlines (85%).
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 £1,010, our data indicates the cheapest price to be £304. The most popular route (London Heathrow - Toronto Pearson Intl), is priced around £339.
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 £429). Flying from London Heathrow Airport to Region of Ontario in August is currently the most expensive (average of £662). 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 Pearson Intl flights

Gatwick to Pearson Intl flights

Heathrow to Vancouver Intl flights

Heathrow to Toronto Island flights

London City to Pearson Intl flights

Stansted to Pearson Intl flights

Heathrow to Calgary flights

Luton to Pearson Intl flights

Heathrow to Pierre Elliott Trudeau Intl flights

Gatwick to Vancouver Intl flights

London City to Vancouver Intl flights

Gatwick to Toronto Island flights

Stansted to Vancouver Intl flights

Heathrow to Abbotsford flights

Gatwick to Calgary flights

London City to Calgary flights

London City to Pierre Elliott Trudeau Intl flights

Gatwick to Pierre Elliott Trudeau Intl flights

Stansted to Pierre Elliott Trudeau Intl flights

Luton to Pierre Elliott Trudeau Intl flights

Heathrow to Halifax flights

Luton to Calgary flights

Heathrow to Ottawa flights

Luton to Vancouver Intl flights

Stansted to Calgary flights

Southend to Pearson Intl flights

London City to Halifax flights

Gatwick to Halifax flights

Heathrow to Edmonton flights

Gatwick to Ottawa flights

Gatwick to Abbotsford flights

Stansted to Halifax flights

Gatwick to Edmonton flights

London City to Edmonton flights

Heathrow to Winnipeg flights

Heathrow to Kelowna flights

London City to Ottawa flights

Heathrow to Comox flights

Heathrow to London flights

London City to Winnipeg flights

Heathrow to Québec City flights

Gatwick to Winnipeg flights

Gatwick to Québec City flights

Gatwick to Kelowna flights

London City to Abbotsford flights

Heathrow to Charlottetown flights

London City to Kelowna flights

Luton to Halifax flights

Top 10 airlines flying from Heathrow to Ontario

Airline	Cheapest	Average	Flexibility	On-time
ITA Airways	Cheapest£268	Average£682	FlexibilityNo cancel fee	On-time81%	Search ITA Airways flights
Icelandair	Cheapest£318	Average£429	FlexibilityNo cancel fee	On-time76%	Search Icelandair flights
Air Canada	Cheapest£324	Average£596	FlexibilityNo cancel fee	On-time67%	Search Air Canada flights
TAP AIR PORTUGAL	Cheapest£339	Average£569	FlexibilityNo cancel fee	On-timeN/A	Search TAP AIR PORTUGAL flights
Virgin Atlantic	Cheapest£345	Average£560	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic flights
Air Transat	Cheapest£349	Average£527	FlexibilityNo cancel fee	On-time50%	Search Air Transat flights
Finnair	Cheapest£364	Average£830	FlexibilityNo cancel fee	On-time76%	Search Finnair flights
Lufthansa	Cheapest£364	Average£556	FlexibilityNo cancel fee	On-time76%	Search Lufthansa flights
British Airways	Cheapest£366	Average£541	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
Aer Lingus	Cheapest£367	Average£559	FlexibilityNo cancel fee	On-timeN/A	Search Aer Lingus 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 £245

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 14/12. 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 October 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 October 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 October 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 October 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 October 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 October 2026.

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

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

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

The most flights from LHR to CAON are scheduled on a Friday (40 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (22 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 £401 and £568 in January.The cheapest return price found within the last 5 days was £359 on British Airways (14 Jan–21 Jan).

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,Aer Lingus, andAir Canada 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

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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 4 October 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 October 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 October 2026.

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

London Heathrow Airport to Region of Ontario flights typically cost between £401 and £568 in January.
The cheapest return price found within the last 5 days was £359 on British Airways (14 Jan–21 Jan).