How long does it take to fly to London Heathrow Airport?

On average, it takes 6h 30m to fly from Region of Ontario to London Heathrow Airport if you fly out of Ottawa (the most popular airport in Region of Ontario) and into London Heathrow Airport (the most popular airport in London Heathrow Airport). If you’re flying out of Toronto and into London Heathrow Airport, then the flight time is around 8h 20m.

How many flights depart from Region of Ontario to London Heathrow Airport on average per day?

50 flights are operational daily from Region of Ontario to London Heathrow Airport as of July 2026. The most popular departure time for this route is 6:00p.m., with 100% of flights per day taking off in the evening.

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

TAP AIR PORTUGAL, Air Canada, and Lufthansa are the most popular carriers operating from Ontario to London Heathrow

Which airlines fly to London Heathrow Airport?

Air Canada, British Airways and Lufthansa are the top three most popular airlines that fly to London Heathrow Airport from Region of Ontario according to our data. Air Canada is the first choice among our users, with 61% of people opting to fly with this airline when travelling to London Heathrow Airport. Keep in mind that there are 15 different airlines that fly to London Heathrow Airport on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from Ontario to London Heathrow Airport?

Prices for flights from Ontario to London Heathrow Airport are updated daily.

How many operators does momondo search for flights from Ontario to London Heathrow Airport?

The number of operators available for flights from Ontario to London Heathrow Airport is 15 as of July 2026.

How old do you have to be to fly from Ontario to London Heathrow Airport?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ontario to London Heathrow Airport.

What documentation or ID do you need to fly to London Heathrow Airport?

The travel and health documents required for your trip to London Heathrow Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at London Heathrow Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

C$ 355 Cheap Flights from Region of Ontario to London Heathrow Airport in 2026

Q: How many flights depart from Region of Ontario to London Heathrow Airport on average per week?

The number of flights available between Region of Ontario and London Heathrow Airport is 356 per week as of July 2026. The most frequent departure day is Thu, with 19% of weekly flights leaving on this day.

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Find the cheapest flights from Ontario to London

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

10:45 p.m. - 10:55 p.m.

YUL

LHR

19h 10m

1 stop

6:00 a.m. - 9:10 p.m.

LHR

YUL

20h 10m

1 stop

C$ 743TAP AIR PORTUGAL

Thu, 6 Aug - Mon, 31 Aug

10:45 p.m. - 10:00 p.m.

YUL

LHR

18h 15m

1 stop

1:45 p.m. - 8:45 p.m.

LHR

YUL

12h 00m

1 stop

C$ 744TAP AIR PORTUGAL

Mon, 7 Sep - Wed, 16 Sep

7:40 p.m. - 10:50 a.m.

YYZ

LHR

10h 10m

1 stop

12:15 p.m. - 6:15 p.m.

LHR

YYZ

11h 00m

1 stop

C$ 757Icelandair

Sun, 1 Nov - Tue, 17 Nov

7:40 p.m. - 10:50 a.m.

YYZ

LHR

10h 10m

1 stop

8:35 p.m. - 6:15 p.m.

LHR

YYZ

26h 40m

1 stop

C$ 758Icelandair

Sun, 1 Nov - Thu, 19 Nov

11:10 p.m. - 7:25 p.m.

YYZ

LHR

15h 15m

2 stops

7:40 a.m. - 10:05 p.m.

LHR

YYZ

19h 25m

2 stops

C$ 768Multiple Airlines

Sun, 9 Aug - Wed, 26 Aug

11:15 a.m. - 8:15 a.m.

YOW

LHR

40h 00m

2 stops

7:30 a.m. - 1:54 p.m.

LHR

YOW

35h 24m

2 stops

C$ 793Multiple Airlines

Thu, 1 Oct - Sun, 4 Oct

3:35 p.m. - 6:30 a.m.

YTZ

LHR

9h 55m

1 stop

1:50 p.m. - 7:50 a.m.

LHR

YTZ

47h 00m

2 stops

C$ 834Air Canada

Mon, 28 Sep - Tue, 6 Oct

6:30 p.m. - 10:00 a.m.

YTZ

LHR

10h 30m

1 stop

2:05 p.m. - 9:30 p.m.

LHR

YTZ

12h 25m

1 stop

C$ 841Air Canada

Sun, 6 Sep - Sat, 12 Sep

5:40 a.m. - 7:15 a.m.

YXU

LHR

20h 35m

2 stops

3:20 p.m. - 9:20 a.m.

LHR

YXU

23h 00m

2 stops

C$ 1,084United Airlines

Mon, 12 Oct - Fri, 16 Oct

3:30 p.m. - 9:20 a.m.

YXU

LHR

12h 50m

2 stops

7:40 a.m. - 8:37 a.m.

LHR

YXU

28h 57m

2 stops

C$ 1,087United Airlines

Thu, 22 Oct - Fri, 30 Oct

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TAP AIR PORTUGAL flights from Region of Ontario to London Heathrow Airport

Our best TAP AIR PORTUGAL deals on Region of Ontario to London Heathrow Airport flight tickets

TAP AIR PORTUGAL

6 Aug

YUL10:45 p.m.Montreal Pierre Elliott Trudeau Intl

19h 10m

1 stop

LHR10:55 p.m.London Heathrow

31 Aug

LHR6:00 a.m.London Heathrow

20h 10m

1 stop

YUL9:10 p.m.Montreal Pierre Elliott Trudeau Intl

C$ 743

TAP AIR PORTUGAL

7 Sep

YUL10:45 p.m.Montreal Pierre Elliott Trudeau Intl

18h 15m

1 stop

LHR10:00 p.m.London Heathrow

16 Sep

LHR1:45 p.m.London Heathrow

12h 00m

1 stop

YUL8:45 p.m.Montreal Pierre Elliott Trudeau Intl

C$ 744

TAP AIR PORTUGAL

7 Sep

YUL10:45 p.m.Montreal Pierre Elliott Trudeau Intl

18h 15m

1 stop

LHR10:00 p.m.London Heathrow

16 Sep

LHR1:45 p.m.London Heathrow

12h 00m

1 stop

YUL8:45 p.m.Montreal Pierre Elliott Trudeau Intl

C$ 746

United Airlines flights from Region of Ontario to London Heathrow Airport

Our best United Airlines deals on Region of Ontario to London Heathrow Airport flight tickets

United Airlines

21 Sep

YTZ3:15 p.m.Toronto Island

24h 25m

2 stops

LHR8:40 p.m.London Heathrow

27 Sep

LHR1:50 p.m.London Heathrow

35h 21m

2 stops

YTZ8:11 p.m.Toronto Island

C$ 930

United Airlines

5 Oct

YTZ3:15 p.m.Toronto Island

10h 40m

1 stop

LHR6:55 a.m.London Heathrow

14 Oct

LHR8:40 a.m.London Heathrow

29h 54m

2 stops

YTZ9:34 a.m.Toronto Island

C$ 932

United Airlines

17 Jul

YOW6:05 a.m.Ottawa

9h 35m

1 stop

LHR8:40 p.m.London Heathrow

2 Sep

LHR8:40 a.m.London Heathrow

20h 14m

2 stops

YOW11:54 p.m.Ottawa

C$ 1,005

momondo 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

MontrealLondon

YUL - LHR

YULLHR

Montreal Pierre Elliott Trudeau Intl

Thu 6/8

10:45 p.m.-10:55 p.m.

1 stop19h 10m

London Heathrow

Mon 31/8

6:00 a.m.-9:10 p.m.

1 stop20h 10m

C$ 743

MontrealLondon

YUL - LHR

YULLHR

Montreal Pierre Elliott Trudeau Intl

Mon 7/9

10:45 p.m.-10:00 p.m.

1 stop18h 15m

London Heathrow

Wed 16/9

1:45 p.m.-8:45 p.m.

1 stop12h 00m

C$ 744

Quickest round-trip

TorontoLondon

YYZ - LHR

YYZLHR

Toronto Pearson Intl

Sun 1/11

7:40 p.m.-10:50 a.m.

1 stop10h 10m

London Heathrow

Tue 17/11

12:15 p.m.-6:15 p.m.

1 stop11h 00m

C$ 757

TorontoLondon

YYZ - LHR

YYZLHR

Toronto Pearson Intl

Sun 1/11

7:40 p.m.-10:50 a.m.

1 stop10h 10m

London Heathrow

Thu 19/11

8:35 p.m.-6:15 p.m.

1 stop26h 40m

C$ 758

TorontoLondon

YYZ - LHR

YYZLHR

Toronto Pearson Intl

Sun 9/8

11:10 p.m.-7:25 p.m.

2 stops15h 15m

London Heathrow

Wed 26/8

7:40 a.m.-10:05 p.m.

2 stops19h 25m

C$ 768

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Thu 1/10

11:15 a.m.-8:15 a.m.

2 stops40h 00m

London Heathrow

Sun 4/10

7:30 a.m.-1:54 p.m.

2 stops35h 24m

C$ 793

TorontoLondon

YTZ - LHR

YTZLHR

Toronto Island

Mon 28/9

3:35 p.m.-6:30 a.m.

1 stop9h 55m

London Heathrow

Tue 6/10

1:50 p.m.-7:50 a.m.

2 stops47h 00m

C$ 834

TorontoLondon

YTZ - LHR

YTZLHR

Toronto Island

Sun 6/9

6:30 p.m.-10:00 a.m.

1 stop10h 30m

London Heathrow

Sat 12/9

2:05 p.m.-9:30 p.m.

1 stop12h 25m

C$ 841

LondonLondon

YXU - LHR

YXULHR

London

Mon 12/10

5:40 a.m.-7:15 a.m.

2 stops20h 35m

London Heathrow

Fri 16/10

3:20 p.m.-9:20 a.m.

2 stops23h 00m

C$ 1,084

LondonLondon

YXU - LHR

YXULHR

London

Thu 22/10

3:30 p.m.-9:20 a.m.

2 stops12h 50m

London Heathrow

Fri 30/10

7:40 a.m.-8:37 a.m.

2 stops28h 57m

C$ 1,087

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Region of Ontario to London Heathrow Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Other information

What is the cheapest month to fly to London Heathrow Airport?

The month of February is, on average, the cheapest month to fly to London Heathrow Airport from Region of Ontario, with most prices found around C$ 823. If you aren’t able to travel to London Heathrow Airport during the month of February, then flying in January is also cheap. Prices for this month can be found on momondo for an average of C$ 847.

What is the cheapest day to depart on your flight to London Heathrow Airport?

According to our data, Sunday is the cheapest day to fly to London Heathrow Airport from Region of Ontario. The lowest ticket price found for a Sunday departure recently was C$ 1,329. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. When flying out on a Saturday, the most expensive travel day of the week, you can expect to see flight prices from Region of Ontario to London Heathrow Airport for around C$ 1,499.

What is the cheapest time of day to depart on your flight to London Heathrow Airport?

Our data shows that the cheapest Region of Ontario to London Heathrow Airport flights are usually those with departure times in the evening. Our users have found flights to London Heathrow Airport in the evening for as low as C$ 1,368. In the afternoon is when there is more demand to fly to London Heathrow Airport, so prices are often more expensive at around C$ 1,437 per ticket.

What is the cheapest Ontario to London Heathrow flight route?

Fly from Toronto Pearson Intl to London Heathrow for the best Ontario - London Heathrow flight prices

How far in advance should I book a flight from Ontario to London Heathrow Airport?

You are more likely to see cheaper flights to London Heathrow Airport from Region of Ontario when booking weeks ahead of your departure date. In general, you can expect to find flights to London Heathrow Airport for around C$ 1,013 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London Heathrow Airport from Region of Ontario for as low as C$ 924 on momondo.

What cabin class options are available on Region of Ontario to London Heathrow Airport flights?

There are 4 cabin classes available to choose from on Region of Ontario to London Heathrow Airport flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Region of Ontario to London Heathrow Airport flights?

You could potentially save up to 87% on your flight if you consider stops on a Region of Ontario to London Heathrow Airport flight.

Cheap Region of Ontario to London Heathrow Airport flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Region of Ontario to London Heathrow Airport

Best price found	C$ 502
Fastest flight time	6h 30m
Direct flights	Tue, Thu, Fri, Sat and Sun

The best one-way flight to London Heathrow Airport from Region of Ontario in the past 72 hours is C$ 502. The best round-trip flight deal from Region of Ontario to London Heathrow Airport found on momondo in the last 72 hours is C$ 906.

The fastest flight from Region of Ontario to London Heathrow Airport takes 6h 30m

Direct flights go from Region of Ontario to London Heathrow Airport on Tuesday, Thursday, Friday, Saturday and Sunday. There are no airlines offering direct flights.

Search flight deals

Frequently asked questions about flying from Ontario to London Heathrow Airport

When did momondo last update prices for flights from Ontario to London Heathrow Airport?
Prices for flights from Ontario to London Heathrow Airport are updated daily.
How many operators does momondo search for flights from Ontario to London Heathrow Airport?
The number of operators available for flights from Ontario to London Heathrow Airport is 15 as of July 2026.
How old do you have to be to fly from Ontario to London Heathrow Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ontario to London Heathrow Airport.
What documentation or ID do you need to fly to London Heathrow Airport?
The travel and health documents required for your trip to London Heathrow Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at London Heathrow Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular plane model from Region of Ontario to London Heathrow Airport?
momondo data reveals that the most frequently booked plane model on the route from Region of Ontario to London Heathrow Airport is Airbus A350-1000, representing 21.76% of all bookings. The subsequent popular models are Airbus A321neo at 13.54%, Airbus A330-200 at 11.81%, and Boeing 787-10 Dreamliner at 10.99%.

Best airlines flying from Region of Ontario to London Heathrow Airport

Compare and see reviews for airlines that fly from Region of Ontario to London Heathrow Airport with momondo

Airline	Rating	Free Cancellation	Price
Virgin Atlantic	PriceFrom C$ 602	Free Cancellation	Rating 7.5 693 reviews	Search Virgin Atlantic flights
TAP AIR PORTUGAL	PriceFrom C$ 610	Free Cancellation	Rating 7.2 2,339 reviews	Search TAP AIR PORTUGAL flights
Icelandair	PriceFrom C$ 669	Free Cancellation	Rating 7.0 709 reviews	Search Icelandair flights
Air Transat	PriceFrom C$ 721	Free Cancellation	Rating 7.8 565 reviews	Search Air Transat flights
Air Canada	PriceFrom C$ 722	Free Cancellation	Rating 7.1 11,347 reviews	Search Air Canada flights
British Airways	PriceFrom C$ 735	Free Cancellation	Rating 6.7 8,121 reviews	Search British Airways flights
KLM	PriceFrom C$ 758	Free Cancellation	Rating 7.8 1,541 reviews	Search KLM flights
Lufthansa	PriceFrom C$ 768	Free Cancellation	Rating 6.8 8,140 reviews	Search Lufthansa flights
American Airlines	PriceFrom C$ 768	Free Cancellation	Rating 7.1 11,818 reviews	Search American Airlines flights
Aer Lingus	PriceFrom C$ 791	Free Cancellation	Rating 7.3 1,670 reviews	Search Aer Lingus flights

Hounslow

Stratford-upon-Avon

Milton Keynes

Poole

Northampton

Wembley

Gatwick

Slough

Staines-upon-Thames

Ramsgate

Kenilworth

Watford

Swindon

Wokingham

Salisbury

Crawley

Croydon

Feltham

Hayes

Richmond

Why use momondo?

Why should I use momondo to find a flight deal from Ontario to London?

It is quick and easy to find Ontario to London flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to London that suits you.

Can I find flights from Ontario to London with flexible booking policies on momondo?

Flights from Ontario to London with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Ontario to London?

Once you have performed a search for Ontario to London flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Ontario to London right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Ontario to London now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to London and let you know when they change.

An easier way to manage your London Heathrow Airport trip

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Cheap flights from Ontario to London from C$ 355

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ontario to London departing on 3/10. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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TAP AIR PORTUGAL flights from Region of Ontario to London Heathrow Airport

Our best TAP AIR PORTUGAL deals on Region of Ontario to London Heathrow Airport flight tickets

United Airlines flights from Region of Ontario to London Heathrow Airport

Our best United Airlines deals on Region of Ontario to London Heathrow Airport flight tickets

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

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How to get the cheapest flight ticket from Region of Ontario to London Heathrow Airport

What is the cheapest month to fly to London Heathrow Airport?

What is the cheapest day to depart on your flight to London Heathrow Airport?

What is the cheapest time of day to depart on your flight to London Heathrow Airport?

What is the cheapest Ontario to London Heathrow flight route?

How far in advance should I book a flight from Ontario to London Heathrow Airport?

What cabin class options are available on Region of Ontario to London Heathrow Airport flights?

Can stopping save me money on Region of Ontario to London Heathrow Airport flights?

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

Which airlines fly to London Heathrow Airport?

How many flights depart from Region of Ontario to London Heathrow Airport on average per day?

How many flights depart from Region of Ontario to London Heathrow Airport on average per week?

How long does it take to fly to London Heathrow Airport?

Cheap Region of Ontario to London Heathrow Airport flight deals and tips

Best price found

Fastest flight time

Direct flights

Frequently asked questions about flying from Ontario to London Heathrow Airport

Best airlines flying from Region of Ontario to London Heathrow Airport

Compare and see reviews for airlines that fly from Region of Ontario to London Heathrow Airport with momondo

Travelling to a place near London?

Why use momondo?

An easier way to manage your London Heathrow Airport trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to London

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According to popular flight searches on momondo this year

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List of cabin classes available on flights landing in London. Availability may vary depending on flight origin and airline.

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