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Cheap flights from London, ON to London Heathrow Airport from C$ 659

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 19/7. Fares are subject to change and may not be available on all flights or dates of travel.
YXU — LHR
11 Jul — 18 Jul1
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 11 June 2026.

Fri 2/1010:05 a.m.
YXU
-
LHR
2 stops16h 10m
United Airlines
Tue 6/107:45 a.m.
LHR
-
YXU
2 stops18h 55m
United Airlines
Deal found 10/6C$ 1,086
Thu 11/610:05 a.m.
YXU
-
LHR
1 stop15h 30m
Air Canada
Wed 24/66:00 a.m.
LHR
-
YXU
2 stops16h 32m
Air Canada
Deal found 8/6C$ 1,100
Fri 2/106:20 p.m.
YXU
-
LHR
1 stop9h 15m
Air Canada
Tue 6/106:00 a.m.
LHR
-
YXU
2 stops16h 45m
Air Canada
Deal found 9/6C$ 1,137
Sat 12/93:30 p.m.
YXU
-
LHR
1 stop10h 05m
Air Canada
Sat 19/99:30 a.m.
LHR
-
YXU
2 stops17h 10m
Air Canada
Deal found 10/6C$ 1,165
Sun 14/610:05 a.m.
YXU
-
LHR
2 stops15h 25m
Air Canada
Sun 21/68:30 a.m.
LHR
-
YXU
1 stop11h 27m
Air Canada
Deal found 7/6C$ 1,171

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 11 June 2026.

Round-trip from

C$ 1,086

One-way from

C$ 659
United Airlines
  • United Airlines
  • 2/10-6/10
  • 4 total stops
  • 35h 05m total
  • London to London
Search Deals
19/7
  • 19/7
  • 3 total stops
  • 45h 25m total
  • London to London
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 11 June 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

Fri 2/10

10:05 a.m.-7:15 a.m.

2 stops16h 10m

London Heathrow

Tue 6/10

7:45 a.m.-9:40 p.m.

2 stops18h 55m

C$ 1,086

LondonLondon

YXU - LHR

YXULHR

London

Wed 25/11

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

2 stops19h 55m

London Heathrow

Sun 6/12

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

2 stops18h 46m

C$ 1,086
Quickest round-trip

LondonLondon

YXU - LHR

YXULHR

London

Fri 2/10

6:20 p.m.-8:35 a.m.

1 stop9h 15m

London Heathrow

Tue 6/10

6:00 a.m.-5:45 p.m.

2 stops16h 45m

C$ 1,139
Cheapest one-way

LondonLondon

YXU - LHR

YXULHR

London

Sun 19/7

5:55 p.m.-8:20 p.m.

3 stops45h 25m

C$ 659
Quickest one-way

LondonLondon

YXU - LHR

YXULHR

London

Sat 11/7

10:05 a.m.-6:35 a.m.

1 stop15h 30m

C$ 719

LondonLondon

YXU - LHR

YXULHR

London

Sun 19/7

9:10 p.m.-6:30 a.m.

2 stops28h 20m

C$ 722

LondonLondon

YXU - LHR

YXULHR

London

Sat 11/7

6:20 p.m.-9:00 p.m.

2 stops21h 40m

C$ 723

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/6

Sorted by cheapest first

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.

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 11 June 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
11,160 reviews
Check prices

Entertainment

6.8

Food

6.3

Boarding

7.3

Crew

7.8

Comfort

7.1

Overall

7.1

Reviews

1 / 20
2.0
Mediocre

Lori,May 2026

YYZ - YFC

Didn't land, sent back to Toronto. No food, no accommodation, no help at all!!
Air Canada
7.1
Good
11,160 reviews
Air Canada
7.1
Good
11,160 reviews
Check prices

Entertainment

6.8

Food

6.3

Boarding

7.3

Crew

7.8

Comfort

7.1

Overall

7.1

Reviews

1 / 20
2.0
Mediocre

Lori,May 2026

YYZ - YFC

Didn't land, sent back to Toronto. No food, no accommodation, no help at all!!

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 16h 10m. United Airlines provides one of the quickest options available for as low as C$ 1,086. 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$ 874, 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.

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
Gatwick
Romford
Twickenham
Ilford
Bromley
Sutton
Hounslow
Slough
Marlow
Cobham
Leamington Spa
Northampton
Watford
Luton
High Wycombe
Stratford-upon-Avon
Moreton-in-Marsh

Browse thousands of different options on Cheapflights for your next trip

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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 11 June 2026.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapestC$ 874AverageC$ 1,252FlexibilityNo 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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