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

A quick flight from Region of Ontario to London Heathrow Airport can take about 7h 05m. United Airlines provides one of the quickest options available for as low as C$ 886. The distance between Region of Ontario and London Heathrow Airport is about 5702 km. This flight may include one or multiple stops.

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

The cheapest airline one-way is TAP AIR PORTUGAL, with whom users have recently found tickets for as low as C$ 302. However, be on the lookout for offers from Icelandair and Lufthansa, as they are both options that can get you from Region of Ontario to London Heathrow Airport for a low price.

In terms of precipitation, rainfall in London Heathrow Airport ranges from 40.0 - 70.0 mm per month. January is typically the wettest month, when rainfall can reach 70.0 mm. July is typically the driest time to visit London Heathrow Airport when rainfall is around 40.0 mm.

If weather is an important factor for your trip to London Heathrow Airport, 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 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 4.0 C).

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

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

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

On average you can expect to pay C$ 2,245 for a flight from Region of Ontario to London Heathrow Airport. The cheapest flight overall is C$ 481 while the most popular route, (Toronto Pearson Intl - London Heathrow) is currently priced at C$ 699.

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

No one likes to see their flight delayed. When booking a flight from Region of Ontario to London Heathrow Airport consider choosing KLM (83%), SAUDIA (83%) or Air France (83%) as they are the most reliable in getting you off to your destination on time.

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

The most popular airlines flying from Region of Ontario to London Heathrow Airport are Air Canada, Lufthansa and British Airways. Something to consider prior to booking your flight.

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

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

How can I find direct flights from Ontario to Heathrow?

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

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

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

C$ 392+ Cheap Flights from Ontario to London Heathrow Airport

Cheap flight deals from Ontario to Heathrow

Enter your travel dates to find the best prices.

Cheapest

Best

Direct

Last-minute

One-way

Cheapest flights from Ontario to Heathrow
Explore the most affordable flight options available from Ontario to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 25 October 2026.

Mon 9/117:40 p.m. -

1 stop18h 50m

Fri 27/1112:15 p.m. -

1 stop11h 00m

Deal found 21/10C$ 776

Sun 15/117:40 p.m. -

1 stop10h 10m

Wed 25/1112:15 p.m. -

1 stop11h 00m

Deal found 22/10C$ 777

Thu 12/117:40 p.m. -

1 stop18h 50m

Mon 23/118:35 p.m. -

1 stop26h 40m

Deal found 22/10C$ 779

Mon 9/117:40 p.m. -

1 stop18h 50m

Mon 23/118:35 p.m. -

1 stop26h 40m

Deal found 21/10C$ 780

Sun 15/117:40 p.m. -

1 stop10h 10m

Mon 23/118:35 p.m. -

1 stop26h 40m

Deal found 22/10C$ 781

Thu 26/117:40 p.m. -

1 stop18h 50m

Sat 5/128:35 p.m. -

1 stop26h 40m

Deal found 22/10C$ 783

Mon 9/117:40 p.m. -

1 stop18h 50m

Wed 18/1112:15 p.m. -

1 stop11h 00m

Deal found 22/10C$ 784

Thu 29/1010:53 a.m. -

1 stop21h 07m

Sat 31/1011:05 a.m. -

2 stops41h 54m

Deal found 24/10C$ 788

Mon 9/1110:45 p.m. -

1 stop13h 45m

Mon 7/126:30 p.m. -

1 stop25h 50m

Deal found 20/10C$ 791

Wed 11/1112:05 p.m. -

1 stop18h 55m

Fri 13/1111:05 a.m. -

2 stops34h 37m

Deal found 20/10C$ 793

Sun 15/117:40 p.m. -

1 stop18h 50m

Sun 6/128:35 p.m. -

1 stop26h 40m

Deal found 20/10C$ 795

Thu 12/117:40 p.m. -

1 stop10h 10m

Tue 17/118:35 p.m. -

1 stop26h 40m

Deal found 22/10C$ 797

Best flights from Ontario to Heathrow
Discover carefully curated flight deals from Ontario to Heathrow that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 25 October 2026.

Wed 11/1112:05 p.m. -

1 stop18h 55m

Fri 13/1111:05 a.m. -

2 stops34h 37m

Deal found 20/10C$ 793

Thu 5/115:35 p.m. -

1 stop10h 45m

Wed 11/117:40 a.m. -

1 stop12h 15m

Deal found 20/10C$ 872

Thu 10/129:45 p.m. -

Nonstop7h 05m

Fri 15/16:30 a.m. -

1 stop14h 10m

Deal found 20/10C$ 886

Fri 2/410:45 p.m. -

Nonstop7h 05m

Fri 23/48:40 a.m. -

1 stop16h 15m

Deal found 24/10C$ 905

Tue 8/1212:15 p.m. -

1 stop14h 30m

Sat 26/124:10 p.m. -

Nonstop7h 55m

Deal found 24/10C$ 937

Sat 7/1110:20 a.m. -

1 stop15h 10m

Fri 13/1112:05 p.m. -

1 stop11h 52m

Deal found 24/10C$ 952

Thu 12/113:25 p.m. -

2 stops12h 55m

Thu 19/119:00 a.m. -

2 stops16h 27m

Deal found 23/10C$ 968

Fri 27/117:50 a.m. -

2 stops18h 00m

Thu 3/128:40 a.m. -

1 stop12h 00m

Deal found 21/10C$ 952

Tue 3/115:25 p.m. -

2 stops12h 25m

Wed 11/116:50 a.m. -

2 stops14h 57m

Deal found 24/10C$ 955

Wed 9/126:00 p.m. -

1 stop11h 30m

Sun 13/1211:20 a.m. -

1 stop16h 47m

Deal found 21/10C$ 966

Thu 5/119:05 p.m. -

2 stops29h 05m

Wed 18/119:00 a.m. -

2 stops16h 27m

Deal found 21/10C$ 983

Sat 21/115:00 a.m. -

1 stop22h 30m

Sat 28/119:00 a.m. -

2 stops30h 11m

Deal found 24/10C$ 1,015

Thu 19/1111:20 a.m. -

1 stop19h 00m

Thu 26/116:35 a.m. -

2 stops21h 01m

Deal found 22/10C$ 1,032

Tue 3/1112:15 p.m. -

1 stop16h 10m

Tue 10/1111:45 a.m. -

2 stops16h 12m

Deal found 22/10C$ 959

Fri 27/1112:15 p.m. -

1 stop14h 30m

Fri 4/128:55 a.m. -

2 stops18h 59m

Deal found 24/10C$ 970

Mon 9/117:26 p.m. -

1 stop11h 34m

Sun 22/1111:05 a.m. -

2 stops36h 40m

Deal found 23/10C$ 972

Wed 18/113:25 p.m. -

1 stop12h 05m

Wed 25/119:00 a.m. -

2 stops16h 27m

Deal found 20/10C$ 990

Tue 10/115:00 a.m. -

2 stops21h 10m

Tue 17/119:00 a.m. -

2 stops18h 36m

Deal found 23/10C$ 1,017

Sun 10/16:10 p.m. -

2 stops14h 40m

Sat 30/18:40 a.m. -

1 stop12h 00m

Deal found 22/10C$ 977

Thu 19/113:25 p.m. -

2 stops24h 35m

Thu 26/116:00 a.m. -

2 stops19h 27m

Deal found 22/10C$ 994

Wed 10/24:15 p.m. -

2 stops13h 35m

Mon 15/27:50 a.m. -

1 stop13h 51m

Deal found 20/10C$ 1,005

Thu 19/115:15 p.m. -

1 stop10h 15m

Thu 26/113:00 p.m. -

1 stop24h 11m

Deal found 22/10C$ 1,035

Sat 13/39:45 p.m. -

Nonstop7h 05m

Sat 20/34:35 p.m. -

1 stop20h 56m

Deal found 22/10C$ 979

Sun 17/17:20 p.m. -

2 stops56h 00m

Thu 21/18:00 a.m. -

2 stops15h 45m

Deal found 20/10C$ 998

Fri 26/33:15 p.m. -

1 stop11h 25m

Sat 3/410:25 a.m. -

2 stops13h 21m

Deal found 21/10C$ 1,012

Wed 31/311:15 a.m. -

1 stop19h 35m

Sat 17/48:30 a.m. -

1 stop12h 30m

Deal found 20/10C$ 1,035

Mon 1/25:30 a.m. -

1 stop20h 00m

Thu 4/29:00 a.m. -

2 stops28h 37m

Deal found 24/10C$ 1,000

Mon 8/27:20 p.m. -

1 stop11h 40m

Sun 14/27:40 a.m. -

1 stop14h 01m

Deal found 24/10C$ 1,014

Sun 6/1212:10 p.m. -

1 stop15h 20m

Thu 10/129:00 a.m. -

1 stop11h 08m

Deal found 19/10C$ 1,087

Tue 2/35:10 p.m. -

1 stop10h 20m

Fri 5/39:00 a.m. -

2 stops30h 08m

Deal found 19/10C$ 1,021

Find flight deals from Ontario to Heathrow

Round-trip from	C$ 774
One-way from	C$ 392
Popular in	December
Cheapest in	February
Average price	C$ 903
Good round-trip deal	C$ 1,111 or less
Good one-way deal	C$ 767 or less

Icelandair
5/2-20/2
2 total stops
21h 10m total
Ontario to London

Search Deals

7/11-31/12
1 total stop
36h 50m total
Ontario to London

Search Deals

Highest demand for flights based on searches. 2% potential increase in price (C$ 38 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease (C$ 42 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in October 2026

Search Deals

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

Search Deals

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

Search Deals

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

TorontoLondon

YKF Toronto Region of Waterloo Intl - LHR London Heathrow

YKFLHR

Toronto Region of Waterloo Intl

Sat 7/11

7:00 p.m.-12:50 p.m.

1 stop36h 50m

London Heathrow

Wed 31/12

12:00 a.m.-6:00 p.m.

Nonstop0h 00m

C$ 392

TorontoLondon

YKF Toronto Region of Waterloo Intl - LHR London Heathrow

YKFLHR

Toronto Region of Waterloo Intl

Sat 21/11

7:00 p.m.-12:50 p.m.

1 stop36h 50m

London Heathrow

Wed 31/12

12:00 a.m.-6:00 p.m.

Nonstop0h 00m

C$ 394

TorontoLondon

YKF Toronto Region of Waterloo Intl - LHR London Heathrow

YKFLHR

Toronto Region of Waterloo Intl

Sat 13/2

7:00 p.m.-12:50 p.m.

1 stop36h 50m

London Heathrow

Wed 31/12

12:00 a.m.-6:00 p.m.

Nonstop0h 00m

C$ 403

TorontoLondon

YKF Toronto Region of Waterloo Intl - LHR London Heathrow

YKFLHR

Toronto Region of Waterloo Intl

Thu 3/12

7:00 p.m.-12:50 p.m.

1 stop36h 50m

London Heathrow

Wed 31/12

12:00 a.m.-6:00 p.m.

Nonstop0h 00m

C$ 408

TorontoLondon

YKF Toronto Region of Waterloo Intl - LHR London Heathrow

YKFLHR

Toronto Region of Waterloo Intl

Sat 5/12

7:00 p.m.-12:50 p.m.

1 stop36h 50m

London Heathrow

Wed 31/12

12:00 a.m.-6:00 p.m.

Nonstop0h 00m

C$ 409

TorontoLondon

YKF Toronto Region of Waterloo Intl - LHR London Heathrow

YKFLHR

Toronto Region of Waterloo Intl

Sat 16/1

7:00 p.m.-12:50 p.m.

1 stop36h 50m

London Heathrow

Wed 31/12

12:00 a.m.-6:00 p.m.

Nonstop0h 00m

C$ 415

TorontoLondon

YKF Toronto Region of Waterloo Intl - LHR London Heathrow

YKFLHR

Toronto Region of Waterloo Intl

Thu 26/11

7:00 p.m.-12:50 p.m.

1 stop36h 50m

London Heathrow

Wed 31/12

12:00 a.m.-6:00 p.m.

Nonstop0h 00m

C$ 416

OttawaLondon

YOW Ottawa - LHR London Heathrow

YOWLHR

Ottawa

Mon 23/11

6:10 a.m.-12:50 p.m.

1 stop25h 40m

London Heathrow

Wed 31/12

12:00 a.m.-6:00 p.m.

Nonstop0h 00m

C$ 459

TorontoLondon

YYZ Toronto Pearson Intl - LHR London Heathrow

YYZLHR

Toronto Pearson Intl

Sat 27/2

10:55 p.m.-11:20 a.m.

Nonstop7h 25m

London Heathrow

Wed 31/12

12:00 a.m.-6:00 p.m.

Nonstop0h 00m

C$ 478

Quickest round-trip

TorontoLondon

YYZ Toronto Pearson Intl - LHR London Heathrow

YYZLHR

Toronto Pearson Intl

Tue 8/12

8:10 p.m.-8:30 a.m.

Nonstop7h 20m

London Heathrow

Wed 31/12

12:00 a.m.-6:00 p.m.

Nonstop0h 00m

C$ 478

Flights are sorted by cheapest round-trip flights first.

Deals found on 20/10

Showing 1-10 of 60 resultsSorted by cheapest first

...

Best time to book a flight from Ontario to Heathrow

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

YYZ-LHR

YTZ-LHR

YOW-LHR

YKF-LHR

YQT-LHR

Estimated round-trip 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 Ontario to London Heathrow Airport

CAON-LHR

YYZ-LHR

YTZ-LHR

YOW-LHR

YKF-LHR

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

Currently, February is the cheapest month in which you can book a flight from Region of Ontario to London Heathrow Airport (average of C$ 850). Flying from Region of Ontario to London Heathrow Airport in December is currently the most expensive (average of C$ 1,326). 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 ON to LHR?

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

How much does it cost to fly round-trip from Region of Ontario to London Heathrow Airport?

Airfare is below average for this route at the moment.

Region of Ontario to London Heathrow Airport flights typically cost between C$ 886 and C$ 1,126 in February.
The cheapest round-trip price found within the last 5 days was C$ 774 on Icelandair (5 Feb-20 Feb).

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

To ensure you get the cheapest price possible for a flight from Region of Ontario to London Heathrow Airport, you should look to book at least 50 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

Related info for your journey

How long is the flight from Region of Ontario to London Heathrow Airport?
A quick flight from Region of Ontario to London Heathrow Airport can take about 7h 05m. United Airlines provides one of the quickest options available for as low as C$ 886. The distance between Region of Ontario and London Heathrow Airport is about 5702 km. This flight may include one or multiple stops.
What are the cheapest airlines to fly from Region of Ontario to London Heathrow Airport one-way?
The cheapest airline one-way is TAP AIR PORTUGAL, with whom users have recently found tickets for as low as C$ 302. However, be on the lookout for offers from Icelandair and Lufthansa, as they are both options that can get you from Region of Ontario to London Heathrow Airport for a low price.
What are the most popular routes from Region of Ontario to London Heathrow Airport?
The most popular flight routes from Region of Ontario to London Heathrow Airport are Toronto Pearson Intl - London Heathrow, Toronto Island - London Heathrow and Montreal Pierre Elliott Trudeau Intl - London Heathrow.
What are the most reliable airlines from Region of Ontario to London Heathrow Airport?
No one likes to see their flight delayed. When booking a flight from Region of Ontario to London Heathrow Airport consider choosing KLM (83%), SAUDIA (83%) or Air France (83%) as they are the most reliable in getting you off to your destination on time.
What are the cheapest flights from Region of Ontario to London Heathrow Airport?
On average you can expect to pay C$ 2,245 for a flight from Region of Ontario to London Heathrow Airport. The cheapest flight overall is C$ 481 while the most popular route, (Toronto Pearson Intl - London Heathrow) is currently priced at C$ 699.
Can I find deals for flights from Ontario to Heathrow that include hotel bookings?
Yes. In addition to deals on Ontario to Heathrow flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Ontario to Heathrow?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to Heathrow.
Can I find deals for business class flights from Ontario to Heathrow?
Yes. Cheapflights offers flight deals from Ontario to Heathrow 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 Region of Ontario to London Heathrow Airport?
Currently, February is the cheapest month in which you can book a flight from Region of Ontario to London Heathrow Airport (average of C$ 850). Flying from Region of Ontario to London Heathrow Airport in December is currently the most expensive (average of C$ 1,326). 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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Slough

Marlow

Cobham

Hounslow

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Alternative routes for Ontario to Heathrow

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Pierre Elliott Trudeau Intl to Stansted flights

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Pierre Elliott Trudeau Intl to Luton flights

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Calgary to Luton flights

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Halifax to London City flights

Winnipeg to Gatwick flights

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Toronto Island to London City flights

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Ottawa to London City flights

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Kelowna to Heathrow flights

Winnipeg to Stansted flights

Saskatoon to London City flights

Saskatoon to Gatwick flights

Victoria to Heathrow flights

Edmonton to Stansted flights

Québec City to Heathrow flights

Top 10 airlines flying from Ontario to Heathrow

Airline	Cheapest	Average	Flexibility	On-time
Virgin Atlantic	CheapestC$ 484	AverageC$ 964	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic flights
TAP AIR PORTUGAL	CheapestC$ 608	AverageC$ 862	FlexibilityNo cancel fee	On-timeN/A	Search TAP AIR PORTUGAL flights
Icelandair	CheapestC$ 656	AverageC$ 766	FlexibilityNo cancel fee	On-time76%	Search Icelandair flights
Iberia	CheapestC$ 712	AverageC$ 1,026	FlexibilityNo cancel fee	On-time77%	Search Iberia flights
Air Transat	CheapestC$ 719	AverageC$ 1,056	FlexibilityNo cancel fee	On-time50%	Search Air Transat flights
Aer Lingus	CheapestC$ 741	AverageC$ 1,075	FlexibilityNo cancel fee	On-timeN/A	Search Aer Lingus flights
KLM	CheapestC$ 773	AverageC$ 982	FlexibilityNo cancel fee	On-time75%	Search KLM flights
British Airways	CheapestC$ 777	AverageC$ 1,091	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
American Airlines	CheapestC$ 778	AverageC$ 953	FlexibilityNo cancel fee	On-time71%	Search American Airlines flights
Air France	CheapestC$ 779	AverageC$ 1,040	FlexibilityNo cancel fee	On-time77%	Search Air France flights

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Cheapflights helps you search for flights from Ontario to Heathrow via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

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

Millions of users choose and trust Cheapflights to book the best flight deals from Ontario to Heathrow 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 Ontario to Heathrow with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from Ontario to Heathrow flexibly with Cheapflights today.

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

Yes! Start tracking prices for Ontario to Heathrow flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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Cheap flights from Ontario to London Heathrow Airport from C$ 392

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/11. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Ontario to Heathrow

Cheapest flights from Ontario to HeathrowExplore the most affordable flight options available from Ontario to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 25 October 2026.

Explore the most affordable flight options available from Ontario to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 25 October 2026.

Best flights from Ontario to HeathrowDiscover carefully curated flight deals from Ontario to Heathrow that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 25 October 2026.

Discover carefully curated flight deals from Ontario to Heathrow that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 25 October 2026.

Direct flights from Ontario to HeathrowExplore direct flight options from Ontario to Heathrow based on user searches, and compare prices and availability for your desired travel dates. Data last updated 25 October 2026.

Explore direct flight options from Ontario to Heathrow based on user searches, and compare prices and availability for your desired travel dates. Data last updated 25 October 2026.

Last-minute flights from Ontario to HeathrowDiscover last-minute flight deals from Ontario to Heathrow. Data last updated 25 October 2026 and is based on user searches.

Discover last-minute flight deals from Ontario to Heathrow. Data last updated 25 October 2026 and is based on user searches.

One-way flights from Ontario to HeathrowSearch for one-way flight options from Ontario to Heathrow. Find affordable one-way fares based on user searches. Data last updated 25 October 2026.

Search for one-way flight options from Ontario to Heathrow. Find affordable one-way fares based on user searches. Data last updated 25 October 2026.

Find flight deals from Ontario to Heathrow

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 Ontario to London Heathrow Airport that are best for you.

Best time to book a flight from Ontario to Heathrow

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

Cheapflights Insights

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

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

Find hourly flight availability from Ontario to Heathrow. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 25 October 2026.

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

How much does it cost to fly round-trip from Region of Ontario to London Heathrow Airport?

Airfare is below average for this route at the moment.

Region of Ontario to London Heathrow Airport flights typically cost between C$ 886 and C$ 1,126 in February.The cheapest round-trip price found within the last 5 days was C$ 774 on Icelandair (5 Feb-20 Feb).

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

To ensure you get the cheapest price possible for a flight from Region of Ontario to London Heathrow Airport, you should look to book at least 50 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

Related info for your journey

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

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

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

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

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

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

How can I find direct flights from Ontario to Heathrow?

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

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

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Alternative routes for Ontario to Heathrow

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Other flights to Heathrow

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Ontario and Heathrow flights

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Ontario to Heathrow flights

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Top 10 airlines flying from Ontario to Heathrow

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Cheapest flights from Ontario to Heathrow
Explore the most affordable flight options available from Ontario to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 25 October 2026.

Best flights from Ontario to Heathrow
Discover carefully curated flight deals from Ontario to Heathrow that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 25 October 2026.

Direct flights from Ontario to Heathrow
Explore direct flight options from Ontario to Heathrow based on user searches, and compare prices and availability for your desired travel dates. Data last updated 25 October 2026.

Last-minute flights from Ontario to Heathrow
Discover last-minute flight deals from Ontario to Heathrow. Data last updated 25 October 2026 and is based on user searches.

One-way flights from Ontario to Heathrow
Search for one-way flight options from Ontario to Heathrow. Find affordable one-way fares based on user searches. Data last updated 25 October 2026.

Region of Ontario to London Heathrow Airport flights typically cost between C$ 886 and C$ 1,126 in February.
The cheapest round-trip price found within the last 5 days was C$ 774 on Icelandair (5 Feb-20 Feb).