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Cheap flights from London, ON to London Heathrow Airport from C$ 632

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 19/4. Fares are subject to change and may not be available on all flights or dates of travel.
YXU — LHR
9 Apr — 16 Apr1
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 10 March 2026.

Sun 19/45:10 a.m.
YXU
-
LHR
2 stops20h 35m
United Airlines
Sun 26/44:40 p.m.
LHR
-
YXU
2 stops29h 24m
United Airlines
Deal found 5/3C$ 1,022
Tue 21/45:10 a.m.
YXU
-
LHR
2 stops20h 35m
United Airlines
Tue 28/44:40 p.m.
LHR
-
YXU
2 stops21h 04m
United Airlines
Deal found 7/3C$ 1,023
Sat 2/512:20 p.m.
YXU
-
LHR
2 stops15h 10m
United Airlines
Wed 6/512:00 p.m.
LHR
-
YXU
2 stops14h 38m
United Airlines
Deal found 6/3C$ 1,024
Thu 23/45:10 a.m.
YXU
-
LHR
2 stops20h 35m
Lufthansa
Thu 30/411:05 a.m.
LHR
-
YXU
2 stops26h 48m
Lufthansa
Deal found 9/3C$ 1,043
Thu 23/49:25 a.m.
YXU
-
LHR
2 stops16h 30m
United Airlines
Thu 30/42:10 p.m.
LHR
-
YXU
2 stops23h 43m
United Airlines
Deal found 9/3C$ 1,079
Sun 19/45:40 p.m.
YXU
-
LHR
2 stops22h 20m
Air Canada
Sun 26/46:00 a.m.
LHR
-
YXU
2 stops20h 19m
Air Canada
Deal found 5/3C$ 1,083
Tue 21/49:25 a.m.
YXU
-
LHR
2 stops31h 00m
Multiple Airlines
Tue 28/48:45 a.m.
LHR
-
YXU
2 stops17h 34m
Multiple Airlines
Deal found 7/3C$ 1,088
Thu 23/45:40 p.m.
YXU
-
LHR
1 stop9h 55m
Air Canada
Thu 30/48:45 a.m.
LHR
-
YXU
2 stops17h 34m
Air Canada
Deal found 8/3C$ 1,099
Tue 21/49:25 a.m.
YXU
-
LHR
1 stop16h 10m
Air Canada
Tue 28/46:00 a.m.
LHR
-
YXU
2 stops16h 04m
Air Canada
Deal found 7/3C$ 1,102

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 10 March 2026.

Round-trip from

C$ 1,022

One-way from

C$ 632

Popular in

August

Cheapest in

July

Average price

C$ 904
United Airlines
  • United Airlines
  • 19/4-26/4
  • 4 total stops
  • 49h 59m total
  • London to London
Search Deals
United Airlines
  • United Airlines
  • 19/4
  • 2 total stops
  • 20h 35m total
  • London to London
Search Deals
Highest demand for flights based on searches. 13% potential increase in price (C$ 218 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease (C$ 90 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 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 10 March 2026.
Use the filters below to find and compare flights from London to London Heathrow Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

LondonLondon

YXU - LHR

YXULHR

London

Sat 18/4

5:10 a.m.-6:45 a.m.

2 stops20h 35m

London Heathrow

Sat 25/4

8:00 a.m.-5:04 p.m.

2 stops38h 04m

C$ 1,022

LondonLondon

YXU - LHR

YXULHR

London

Mon 20/4

9:25 a.m.-11:55 a.m.

2 stops21h 30m

London Heathrow

Mon 27/4

8:00 a.m.-8:44 a.m.

2 stops29h 44m

C$ 1,022

LondonLondon

YXU - LHR

YXULHR

London

Sun 19/4

5:10 a.m.-6:45 a.m.

2 stops20h 35m

London Heathrow

Sun 26/4

4:40 p.m.-5:04 p.m.

2 stops29h 24m

C$ 1,022

LondonLondon

YXU - LHR

YXULHR

London

Tue 21/4

5:10 a.m.-6:45 a.m.

2 stops20h 35m

London Heathrow

Tue 28/4

4:40 p.m.-8:44 a.m.

2 stops21h 04m

C$ 1,023
Quickest round-trip

LondonLondon

YXU - LHR

YXULHR

London

Sat 2/5

12:20 p.m.-8:30 a.m.

2 stops15h 10m

London Heathrow

Wed 6/5

12:00 p.m.-9:38 p.m.

2 stops14h 38m

C$ 1,024

LondonLondon

YXU - LHR

YXULHR

London

Mon 6/4

5:40 p.m.-6:45 a.m.

2 stops32h 05m

London Heathrow

Mon 13/4

4:40 p.m.-5:04 p.m.

2 stops29h 24m

C$ 1,029

LondonLondon

YXU - LHR

YXULHR

London

Wed 22/4

9:25 a.m.-6:45 a.m.

2 stops16h 20m

London Heathrow

Wed 29/4

8:00 a.m.-9:19 p.m.

2 stops18h 19m

C$ 1,029

LondonLondon

YXU - LHR

YXULHR

London

Wed 13/5

9:30 a.m.-7:15 a.m.

2 stops16h 45m

London Heathrow

Mon 18/5

10:25 a.m.-9:38 p.m.

2 stops16h 13m

C$ 1,029

LondonLondon

YXU - LHR

YXULHR

London

Sun 5/4

5:40 p.m.-10:40 a.m.

2 stops12h 00m

London Heathrow

Sun 12/4

2:10 p.m.-8:44 a.m.

2 stops23h 34m

C$ 1,029
Cheapest one-way

LondonLondon

YXU - LHR

YXULHR

London

Mon 20/4

5:40 p.m.-11:55 a.m.

2 stops37h 15m

C$ 632

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/3

Showing 1-10 of 20 resultsSorted by cheapest first
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, May is the cheapest month in which you can book a flight from London, Ontario to London Heathrow Airport (average of C$ 659). Flying from London, Ontario to London Heathrow Airport in July is currently the most expensive (average of C$ 896). 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 10 March 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
10,800 reviews
Check prices

Boarding

7.3

Overall

7.1

Crew

7.8

Comfort

7.1

Entertainment

6.8

Food

6.3

Reviews

1 / 20
4.0
Okay

Sugith,Jan 2026

YSB - YYZ

Left 2 hours late. Stuck on plane for an hour after boarding before take off.
Air Canada
7.1
Good
10,800 reviews
Air Canada
7.1
Good
10,800 reviews
Check prices

Boarding

7.3

Overall

7.1

Crew

7.8

Comfort

7.1

Entertainment

6.8

Food

6.3

Reviews

1 / 20
4.0
Okay

Sugith,Jan 2026

YSB - YYZ

Left 2 hours late. Stuck on plane for an hour after boarding before take off.

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 35m. United Airlines provides one of the quickest options available for as low as C$ 1,022. 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$ 850, was found to be the cheapest airline from London, Ontario to London Heathrow Airport..

  • 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, May is the cheapest month in which you can book a flight from London, Ontario to London Heathrow Airport (average of C$ 659). Flying from London, Ontario to London Heathrow Airport in July is currently the most expensive (average of C$ 896). 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
Twickenham
Sutton
Gatwick
Slough
Marlow
Cobham
Leamington Spa
Romford
Watford
Bedford
Luton
High Wycombe
Stratford-upon-Avon
Hounslow
Moreton-in-Marsh

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.

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 10 March 2026.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapestC$ 850AverageC$ 1,208FlexibilityNo 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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