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

For as low as £644, Air Canada can have you in London, Ontario from London Heathrow Airport in 25h 42m. The distance from London Heathrow Airport to London, Ontario is about 3631 mi. Both multi-stop and direct flights can be found to your destination and back.

What is the cheapest airline to fly from London Heathrow Airport to London, Ontario round-trip?

Our cheapest airline available from London Heathrow Airport to London, Ontario is Air Canada. Our recent data shows that you can find tickets from as low as £600 on this airline.

In terms of precipitation, rainfall in London, Ontario ranges from 70.0 - 100.0 inches per month. January is typically the wettest month, when rainfall can reach 100.0 mm. March is typically the driest time to visit London, Ontario when rainfall is around 70.0 mm.

If weather is an important factor for your trip to London, 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 20.0 C. Travellers hoping to avoid the cold should look outside of February, when temperatures are typically at their lowest (around -6.0 C).

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

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from London Heathrow Airport to London, Ontario as you normally would.

What airport do you fly into for flights to London from London Heathrow?

London (YXU), located 5.3 mi from the city center, is the airport you fly into when you book flights from London Heathrow to London. 1 airline have flights to London from London Heathrow on a regular basis. Booking flights from London Heathrow to London should not be difficult; the airport handles an average of 0 inbound flights from London Heathrow per day.

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

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

How can I find direct flights from Heathrow to London?

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

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

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

£399+ Cheap Flights from London Heathrow Airport to London, Ontario

Cheap flight deals from Heathrow to London

Enter your travel dates to find the best prices.

Cheapest

Best

Last-minute

One-way

Cheapest flights from Heathrow to London
Explore the most affordable flight options available from Heathrow to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 7 October 2026.

Fri 20/1111:30 -

2 stops15h 22m

Fri 27/1109:15 -

1 stop18h 15m

Deal found 6/10£475

Fri 20/1109:00 -

2 stops16h 27m

Fri 27/1109:15 -

2 stops26h 05m

Deal found 6/10£476

Fri 20/1108:30 -

2 stops35h 12m

Fri 27/1115:25 -

2 stops16h 35m

Deal found 6/10£507

Thu 19/1109:30 -

2 stops25h 05m

Fri 27/1106:40 -

2 stops24h 10m

Deal found 2/10£527

Find flight deals from Heathrow to London

Round-trip from	£475
One-way from	£399
Popular in	August
Cheapest in	January
Average price	£594

Lufthansa
20/11-27/11
3 total stops
33h 37m total
London to London

Search Deals

Air Canada
16/11-31/12
2 total stops
20h 52m total
London to London

Search Deals

Highest demand for flights based on searches. 36% potential increase in price (£340 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 29% potential price decrease (£135 potential savings vs. average return price).

Search Deals

Average for round-trip flights in October 2026

Search Deals

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonLondon

LHR London Heathrow - YXU London

LHRYXU

London Heathrow

Mon 16/11

06:00-21:52

2 stops20h 52m

London

Wed 31/12

00:00-06:00

Nonstop0h 00m

£399

LondonLondon

LHR London Heathrow - YXU London

LHRYXU

London Heathrow

Thu 19/11

09:00-08:32

2 stops28h 32m

London

Wed 31/12

00:00-06:00

Nonstop0h 00m

£400

LondonLondon

LHR London Heathrow - YXU London

LHRYXU

London Heathrow

Sat 31/10

18:00-09:37

1 stop19h 37m

London

Wed 31/12

00:00-06:00

Nonstop0h 00m

£413

Fastest return journey

LondonLondon

LHR London Heathrow - YXU London

LHRYXU

London Heathrow

Sun 11/10

09:30-17:43

2 stops13h 13m

London

Wed 31/12

00:00-06:00

Nonstop0h 00m

£420

LondonLondon

LHR London Heathrow - YXU London

LHRYXU

London Heathrow

Mon 16/11

18:00-08:32

1 stop19h 32m

London

Wed 31/12

00:00-06:00

Nonstop0h 00m

£429

LondonLondon

LHR London Heathrow - YXU London

LHRYXU

London Heathrow

Mon 16/11

08:45-21:52

3 stops18h 07m

London

Wed 31/12

00:00-06:00

Nonstop0h 00m

£441

LondonLondon

LHR London Heathrow - YXU London

LHRYXU

London Heathrow

Thu 19/11

09:10-08:32

2 stops28h 22m

London

Wed 31/12

00:00-06:00

Nonstop0h 00m

£481

LondonLondon

LHR London Heathrow - YXU London

LHRYXU

London Heathrow

Fri 20/11

14:50-14:42

3 stops28h 52m

London

Wed 31/12

00:00-06:00

Nonstop0h 00m

£491

LondonLondon

LHR London Heathrow - YXU London

LHRYXU

London Heathrow

Fri 20/11

09:00-14:42

2 stops34h 42m

London

Fri 27/11

15:25-13:00

2 stops16h 35m

£497

LondonLondon

LHR London Heathrow - YXU London

LHRYXU

London Heathrow

Mon 16/11

13:25-05:35

1 stop21h 10m

London

Mon 23/11

06:40-09:20

1 stop21h 40m

£607

Flights are sorted by cheapest return flights first.

Deals found on 3/10

Showing 1-10 of 18 resultsSorted by cheapest first

Best time to book a flight from Heathrow to London

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

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.

Reviews of airlines servicing London

See what other customers who have flown with Air Canada from London Heathrow Airport to London have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Air Canada

7.1

Good

11,731 reviews

Check prices

Reviews

1 / 20

2.0

Mediocre

Sylvia,Aug 2026

YLW - YYZ

The fires impacted our trip. We sat in the plane for an hour with no air conditioning. We were a total of 5-hour delay but missed our connection. The staff tried to keep us aware of important information

Air Canada

7.1

Good

11,731 reviews

Air Canada

7.1

Good

11,731 reviews

Check prices

Reviews

1 / 20

2.0

Mediocre

Sylvia,Aug 2026

YLW - YYZ

Related info for your journey

What airport do you fly into for flights to London from London Heathrow?
London (YXU), located 5.3 mi from the city center, is the airport you fly into when you book flights from London Heathrow to London. 1 airline have flights to London from London Heathrow on a regular basis. Booking flights from London Heathrow to London should not be difficult; the airport handles an average of 0 inbound flights from London Heathrow per day.
How long is the flight from London Heathrow Airport to London, Ontario?
For as low as £644, Air Canada can have you in London, Ontario from London Heathrow Airport in 25h 42m. The distance from London Heathrow Airport to London, Ontario is about 3631 mi. Both multi-stop and direct flights can be found to your destination and back.
What is the cheapest airline to fly from London Heathrow Airport to London, Ontario round-trip?
Our cheapest airline available from London Heathrow Airport to London, Ontario is Air Canada. Our recent data shows that you can find tickets from as low as £600 on this airline.
Can I find deals for flights from Heathrow to London that include hotel bookings?
Yes. In addition to deals on Heathrow to London flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Heathrow to London?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Heathrow to London.
Can I find deals for business class flights from Heathrow to London?
Yes. Cheapflights offers flight deals from Heathrow to London by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Alternative routes

Complete your trip

Direct flights to Ontario

Flights by cabin class

Other flight options

Other flights from Heathrow

Popular flights

Alternative routes for Heathrow to London

Heathrow to Pearson Intl flights

Gatwick to Pearson Intl flights

Heathrow to Toronto Island flights

London City to Pearson Intl flights

Stansted to Pearson Intl flights

Luton to Pearson Intl flights

Heathrow to Pierre Elliott Trudeau Intl flights

Gatwick to Toronto Island flights

Stansted to Pierre Elliott Trudeau Intl flights

London City to Pierre Elliott Trudeau Intl flights

Gatwick to Pierre Elliott Trudeau Intl flights

Luton to Pierre Elliott Trudeau Intl flights

Southend to Pearson Intl flights

Heathrow to Ottawa flights

Gatwick to Ottawa flights

London City to Ottawa flights

Stansted to Ottawa flights

Heathrow to Thunder Bay flights

Gatwick to London flights

Heathrow to Windsor flights

Gatwick to Thunder Bay flights

London City to Thunder Bay flights

London City to London flights

Gatwick to Region of Waterloo Intl flights

Stansted to London flights

Heathrow to Sarnia flights

Heathrow to North Bay flights

Heathrow to Timmins flights

Top airline flying from Heathrow to London

Airline	Cheapest	Average	Flexibility	On-time
Air Canada	Cheapest£600	Average£767	FlexibilityNo cancel fee	On-time67%	Search Air Canada flights

Fly with Cheapflights

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

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 London from Heathrow today with Cheapflights!

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

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

Yes! Cheapflights helps users easily find flights from Heathrow to London with no change fees.

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

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to London from Heathrow today and book when prices fit your budget.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

Cheap flights from London Heathrow Airport to London, Ontario from £399

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 16/11. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Heathrow to London

Cheapest flights from Heathrow to LondonExplore the most affordable flight options available from Heathrow to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 7 October 2026.

Explore the most affordable flight options available from Heathrow to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 7 October 2026.

Best flights from Heathrow to LondonDiscover carefully curated flight deals from Heathrow to London that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 7 October 2026.

Discover carefully curated flight deals from Heathrow to London that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 7 October 2026.

Last-minute flights from Heathrow to LondonDiscover last-minute flight deals from Heathrow to London. Data last updated 7 October 2026 and is based on user searches.

Discover last-minute flight deals from Heathrow to London. Data last updated 7 October 2026 and is based on user searches.

One-way flights from Heathrow to LondonSearch for one-way flight options from Heathrow to London. Find affordable one-way fares based on user searches. Data last updated 7 October 2026.

Search for one-way flight options from Heathrow to London. Find affordable one-way fares based on user searches. Data last updated 7 October 2026.

Find flight deals from Heathrow to London

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Cheapflights Fare Finder

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

Best time to book a flight from Heathrow to London

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

Reviews of airlines servicing London

See what other customers who have flown with Air Canada from London Heathrow Airport to London have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

What airport do you fly into for flights to London from London Heathrow?

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

What is the cheapest airline to fly from London Heathrow Airport to London, Ontario round-trip?

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

How can I find direct flights from Heathrow to London?

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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Heathrow to London

See prices for flight routes from nearby airports that may be better suited for you.

Complete your trip

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

Direct flights to Ontario

Book a non-stop flight to one of these other cities located in Ontario.

Search flights from Heathrow to London by cabin class

Find flights from Heathrow to London, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Heathrow and London flights

Browse other Heathrow and London flight options. Last updated on 7 October 2026.

Other flights from Heathrow

Browse through other flights departing from Heathrow. Flights are based on user searches made on Cheapflights and were last updated on 7 October 2026.

Popular flight searches

Check out other popular destinations found by fellow travellers in 2026

Top airline flying from Heathrow to London

Fly with Cheapflights

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

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

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

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

100% Free

Book with Flexibility

Travel Smart

Cheapest flights from Heathrow to London
Explore the most affordable flight options available from Heathrow to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 7 October 2026.

Best flights from Heathrow to London
Discover carefully curated flight deals from Heathrow to London that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 7 October 2026.

Last-minute flights from Heathrow to London
Discover last-minute flight deals from Heathrow to London. Data last updated 7 October 2026 and is based on user searches.

One-way flights from Heathrow to London
Search for one-way flight options from Heathrow to London. Find affordable one-way fares based on user searches. Data last updated 7 October 2026.