Find flights
When to book
FAQs

Cheap flights from London, ON to London Heathrow Airport from C$ 686

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 18/9. Fares are subject to change and may not be available on all flights or dates of travel.
YXU — LHR
24 Aug — 31 Aug1
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 25 July 2026.

Sun 6/95:40 a.m.
YXU
-
LHR
2 stops20h 35m
United Airlines
Sun 13/97:45 a.m.
LHR
-
YXU
2 stops14h 58m
United Airlines
Deal found 23/7C$ 1,090
Fri 4/95:40 a.m.
YXU
-
LHR
2 stops20h 05m
United Airlines
Fri 11/912:00 p.m.
LHR
-
YXU
2 stops14h 40m
United Airlines
Deal found 21/7C$ 1,093
Sat 5/93:30 p.m.
YXU
-
LHR
2 stops14h 10m
Lufthansa
Sat 12/912:00 p.m.
LHR
-
YXU
2 stops14h 40m
Lufthansa
Deal found 22/7C$ 1,114
Mon 12/103:30 p.m.
YXU
-
LHR
2 stops13h 30m
Multiple Airlines
Fri 16/102:10 p.m.
LHR
-
YXU
1 stop20h 10m
Multiple Airlines
Deal found 24/7C$ 1,231
Fri 2/105:40 a.m.
YXU
-
LHR
1 stop19h 55m
Air Canada
Mon 12/105:15 p.m.
LHR
-
YXU
2 stops29h 30m
Air Canada
Deal found 22/7C$ 1,248
Thu 22/103:30 p.m.
YXU
-
LHR
2 stops13h 30m
Air Canada
Wed 28/109:00 a.m.
LHR
-
YXU
2 stops27h 37m
Air Canada
Deal found 23/7C$ 1,252
Fri 2/1010:05 a.m.
YXU
-
LHR
1 stop17h 30m
Multiple Airlines
Mon 12/1012:05 p.m.
LHR
-
YXU
1 stop10h 40m
Multiple Airlines
Deal found 22/7C$ 1,256
Sat 5/93:30 p.m.
YXU
-
LHR
2 stops13h 55m
Multiple Airlines
Sat 12/98:30 a.m.
LHR
-
YXU
1 stop14h 13m
Multiple Airlines
Deal found 22/7C$ 1,268
Wed 19/810:05 a.m.
YXU
-
LHR
2 stops17h 30m
Multiple Airlines
Wed 26/86:55 a.m.
LHR
-
YXU
2 stops19h 45m
Multiple Airlines
Deal found 22/7C$ 1,290

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 25 July 2026.

Round-trip from

C$ 1,090

One-way from

C$ 686
United Airlines
  • United Airlines
  • 6/9-13/9
  • 4 total stops
  • 35h 33m total
  • London to London
Search Deals
18/9
  • 18/9
  • 3 total stops
  • 46h 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 25 July 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

Sun 6/9

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

2 stops19h 35m

London Heathrow

Sun 13/9

7:45 a.m.-5:43 p.m.

2 stops14h 58m

C$ 1,090

LondonLondon

YXU - LHR

YXULHR

London

Fri 4/9

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

2 stops20h 05m

London Heathrow

Fri 11/9

11:05 a.m.-9:40 p.m.

2 stops15h 35m

C$ 1,090

LondonLondon

YXU - LHR

YXULHR

London

Fri 2/10

10:05 a.m.-6:45 a.m.

2 stops15h 40m

London Heathrow

Mon 12/10

4:40 p.m.-5:45 p.m.

2 stops30h 05m

C$ 1,090

LondonLondon

YXU - LHR

YXULHR

London

Mon 7/9

3:30 p.m.-10:40 a.m.

2 stops14h 10m

London Heathrow

Mon 14/9

8:00 a.m.-9:40 p.m.

2 stops18h 40m

C$ 1,090

LondonLondon

YXU - LHR

YXULHR

London

Thu 3/9

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

2 stops19h 15m

London Heathrow

Tue 8/9

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

2 stops23h 00m

C$ 1,090

LondonLondon

YXU - LHR

YXULHR

London

Sat 5/9

3:30 p.m.-10:40 a.m.

2 stops14h 10m

London Heathrow

Sat 12/9

12:00 p.m.-9:40 p.m.

2 stops14h 40m

C$ 1,114

LondonLondon

YXU - LHR

YXULHR

London

Thu 22/10

3:30 p.m.-10:00 a.m.

2 stops13h 30m

London Heathrow

Wed 28/10

9:00 a.m.-8:37 a.m.

2 stops27h 37m

C$ 1,252

LondonLondon

YXU - LHR

YXULHR

London

Fri 2/10

10:05 a.m.-8:35 a.m.

1 stop17h 30m

London Heathrow

Mon 12/10

12:05 p.m.-5:45 p.m.

1 stop10h 40m

C$ 1,256
Quickest round-trip

LondonLondon

YXU - LHR

YXULHR

London

Sat 5/9

3:30 p.m.-10:25 a.m.

2 stops13h 55m

London Heathrow

Sat 12/9

8:30 a.m.-5:43 p.m.

1 stop14h 13m

C$ 1,268

LondonLondon

YXU - LHR

YXULHR

London

Wed 19/8

10:05 a.m.-8:35 a.m.

2 stops17h 30m

London Heathrow

Wed 26/8

6:55 a.m.-9:40 p.m.

2 stops19h 45m

C$ 1,290

Flights are sorted by cheapest round-trip flights first.

Deals found on 20/7

Showing 1-10 of 17 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.

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. 0 airlines have 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 19h 35m. United Airlines provides one of the quickest options available for as low as C$ 1,090. Airlines will cover a distance of 5844 km.

  • 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
Luton
Slough
Marlow
Cobham
Hounslow
Leamington Spa
Northampton
Watford
High Wycombe
Stratford-upon-Avon
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.

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!

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.