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Cheap flights from London, ON to London Heathrow Airport from C$ 561

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/3. Fares are subject to change and may not be available on all flights or dates of travel.
YXU — LHR
20 Feb — 27 Feb1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from London to Heathrow

Enter your travel dates to find the best prices.

Cheapest flights from London to Heathrow
Explore the most affordable flight options available from London to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 21 January 2026.

Wed 18/29:25 a.m.
YXU
-
LHR
2 stops18h 55m
Multiple Airlines
Wed 25/26:35 a.m.
LHR
-
YXU
2 stops15h 30m
Multiple Airlines
Deal found 21/1C$ 846
Fri 6/39:25 a.m.
YXU
-
LHR
1 stop20h 55m
Air Canada
Fri 13/39:00 a.m.
LHR
-
YXU
2 stops16h 21m
Air Canada
Deal found 20/1C$ 857
Wed 18/29:25 a.m.
YXU
-
LHR
1 stop18h 05m
Air Canada
Wed 25/29:00 a.m.
LHR
-
YXU
2 stops17h 21m
Air Canada
Deal found 21/1C$ 861
Wed 15/45:40 p.m.
YXU
-
LHR
1 stop13h 10m
Air Canada
Wed 29/48:40 a.m.
LHR
-
YXU
2 stops17h 38m
Air Canada
Deal found 18/1C$ 870
Mon 23/25:10 a.m.
YXU
-
LHR
1 stop20h 20m
Air Canada
Fri 27/29:00 a.m.
LHR
-
YXU
2 stops37h 05m
Air Canada
Deal found 18/1C$ 872
Sat 7/39:25 a.m.
YXU
-
LHR
2 stops30h 10m
Air Canada
Sat 14/36:00 a.m.
LHR
-
YXU
2 stops19h 21m
Air Canada
Deal found 21/1C$ 874
Tue 14/45:40 p.m.
YXU
-
LHR
1 stop10h 55m
Multiple Airlines
Tue 28/47:25 a.m.
LHR
-
YXU
2 stops14h 38m
Multiple Airlines
Deal found 18/1C$ 877

Find flight deals from London to Heathrow

Discover tips and strategies to find the most affordable flight options for your journey from London (YXU) to Heathrow (LHR). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 21 January 2026.

Round-trip from

C$ 846

One-way from

C$ 561

Popular in

June

Cheapest in

May

Average price

C$ 1,125
Lufthansa
  • Lufthansa
  • 18/2-25/2
  • 4 total stops
  • 34h 25m total
  • London to London
Search Deals
Air Canada
  • Air Canada
  • 5/3
  • 1 total stop
  • 12h 40m total
  • London to London
Search Deals
Highest demand for flights based on searches. 13% potential increase in price (C$ 242 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease (C$ 91 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from London to Heathrow that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 629,999 searches. Data last updated 21 January 2026.
Use the filters below to find and compare flights from London to London Heathrow Airport that are best for you.

Fly from

London

Fly to

Heathrow

Route

Depart

Return

Price

LondonLondon

YXU - LHR

YXULHR

London

Wed 18/2

9:25 a.m.-9:20 a.m.

2 stops18h 55m

London Heathrow

Wed 25/2

6:35 a.m.-5:05 p.m.

2 stops15h 30m

C$ 846

LondonLondon

YXU - LHR

YXULHR

London

Fri 6/3

9:25 a.m.-11:20 a.m.

1 stop20h 55m

London Heathrow

Fri 13/3

9:00 a.m.-9:21 p.m.

2 stops16h 21m

C$ 857

LondonLondon

YXU - LHR

YXULHR

London

Wed 18/2

9:25 a.m.-8:30 a.m.

1 stop18h 05m

London Heathrow

Wed 25/2

9:00 a.m.-9:21 p.m.

2 stops17h 21m

C$ 861

LondonLondon

YXU - LHR

YXULHR

London

Wed 15/4

9:25 a.m.-8:35 a.m.

2 stops18h 10m

London Heathrow

Wed 29/4

8:40 a.m.-8:43 a.m.

2 stops29h 03m

C$ 871

LondonLondon

YXU - LHR

YXULHR

London

Sat 7/3

9:25 a.m.-8:35 p.m.

2 stops30h 10m

London Heathrow

Sat 14/3

6:00 a.m.-9:21 p.m.

2 stops19h 21m

C$ 874

LondonLondon

YXU - LHR

YXULHR

London

Mon 23/2

5:10 a.m.-8:30 a.m.

1 stop22h 20m

London Heathrow

Fri 27/2

9:00 a.m.-8:46 a.m.

2 stops28h 46m

C$ 875

LondonLondon

YXU - LHR

YXULHR

London

Fri 6/3

5:40 p.m.-8:30 a.m.

1 stop9h 50m

London Heathrow

Fri 13/3

1:00 p.m.-9:21 p.m.

1 stop12h 21m

C$ 895

LondonLondon

YXU - LHR

YXULHR

London

Wed 15/4

5:40 p.m.-9:35 a.m.

1 stop10h 55m

London Heathrow

Mon 27/4

2:10 p.m.-9:18 p.m.

1 stop12h 08m

C$ 895

LondonLondon

YXU - LHR

YXULHR

London

Thu 5/3

5:40 p.m.-11:20 a.m.

1 stop12h 40m

C$ 561

LondonLondon

YXU - LHR

YXULHR

London

Wed 4/3

5:10 a.m.-9:20 a.m.

2 stops23h 10m

C$ 567

Flights are sorted by cheapest round-trip flights first.

Deals found on 19/1

Showing 1-10 of 14 results
1
2

Best time to book a flight from London to Heathrow

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

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

Currently, March is the cheapest month in which you can book a flight from London, Ontario to London Heathrow Airport (average of C$ 665). Flying from London, Ontario to London Heathrow Airport in July is currently the most expensive (average of C$ 919). 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.

Reviews of airlines servicing Heathrow

Get insights into the airlines that provide service to Heathrow. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Heathrow. Reviews last updated 21 January 2026.
Get a feel of what it's like to fly with Air Canada from London to London Heathrow Airport by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Air Canada
7.1
Good
10,646 reviews
Check prices

Boarding

7.3

Crew

7.8

Overall

7.1

Entertainment

6.8

Food

6.3

Comfort

7.1

Reviews

1 / 20
2.0
Mediocre

Sugith,Jan 2026

YYZ - YSB

8 am flight cancelled at 2 am. Rebooked next day. Had to pay to rebook myself on Porter to leave same day.
Air Canada
7.1
Good
10,646 reviews
Air Canada
7.1
Good
10,646 reviews
Check prices

Boarding

7.3

Crew

7.8

Overall

7.1

Entertainment

6.8

Food

6.3

Comfort

7.1

Reviews

1 / 20
2.0
Mediocre

Sugith,Jan 2026

YYZ - YSB

8 am flight cancelled at 2 am. Rebooked next day. Had to pay to rebook myself on Porter to leave same day.

Related info for your journey

Find useful and relevant information for your journey from London to Heathrow. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

    For a flight from London to London Heathrow, you will be flying from London. London (YXU) is just 8.6 km from the centre of the city. London is the only London airport and it handles 0 outbound flights to London Heathrow per day. 1 airline has flights to London Heathrow from London on a regular basis.

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

    A quick flight from London, Ontario to London Heathrow Airport can take about 20h 55m. Air Canada provides one of the quickest options available for as low as C$ 857. Airlines will cover a distance of 5844 km.

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

    Air Canada, at C$ 854, was found to be the cheapest airline from London, Ontario to London Heathrow Airport.. This flight start at 23% lower than the current average price 3 months from now.

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

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

  • How can I find direct flights from London to Heathrow?

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

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

    Yes. Cheapflights offers flight deals from London 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 London, Ontario to London Heathrow Airport?

    Currently, March is the cheapest month in which you can book a flight from London, Ontario to London Heathrow Airport (average of C$ 665). Flying from London, Ontario to London Heathrow Airport in July is currently the most expensive (average of C$ 919). 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

Travelling to a place near London Heathrow Airport?

Book flights to London Heathrow Airport if you plan to visit one of these locations
Sutton
Twickenham
Gatwick
Slough
Marlow
Cobham
Milton Keynes
Leamington Spa
Romford
Watford
Bedford
Luton
Stratford-upon-Avon
Hounslow

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Alternative routes for London to Heathrow

See prices for flight routes from nearby airports that may be better suited for you.
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Top airline flying from London to Heathrow

Discover the top airline that operate flights from London to Heathrow. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 629,999 searches. Data last updated 21 January 2026.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapestC$ 854AverageC$ 1,213FlexibilityNo cancel feeOn-time67%
Search Air Canada flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

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

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from London to Heathrow. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

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

Cheapflights simply makes it quick and affordable to book flights from London to Heathrow by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

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

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

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

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

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