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Cheap flights from London Heathrow Airport to London, ON from C$ 665

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 8/6. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — YXU
25 May — 1 Jun1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Heathrow to London

Enter your travel dates to find the best prices.

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 25 April 2026.

Wed 16/98:30 a.m.
LHR
-
YXU
1 stop18h 10m
Air Canada
Sun 20/96:20 p.m.
YXU
-
LHR
1 stop10h 15m
Air Canada
Deal found 23/4C$ 1,099
Thu 4/68:45 a.m.
LHR
-
YXU
2 stops17h 53m
Air Canada
Thu 11/612:20 p.m.
YXU
-
LHR
2 stops13h 10m
Air Canada
Deal found 20/4C$ 1,106
Mon 8/68:40 a.m.
LHR
-
YXU
2 stops17h 58m
Air Canada
Mon 15/63:30 p.m.
YXU
-
LHR
1 stop12h 05m
Air Canada
Deal found 24/4C$ 1,113
Sat 6/66:50 a.m.
LHR
-
YXU
2 stops13h 08m
Air Canada
Sat 13/63:30 p.m.
YXU
-
LHR
1 stop10h 05m
Air Canada
Deal found 22/4C$ 1,118
Thu 4/61:50 p.m.
LHR
-
YXU
2 stops32h 43m
SWISS
Thu 11/612:20 p.m.
YXU
-
LHR
2 stops24h 30m
SWISS
Deal found 20/4C$ 1,129
Mon 18/58:40 a.m.
LHR
-
YXU
2 stops41h 58m
Multiple Airlines
Mon 25/56:10 p.m.
YXU
-
LHR
2 stops13h 50m
Multiple Airlines
Deal found 20/4C$ 1,133
Sun 7/66:00 a.m.
LHR
-
YXU
2 stops20h 38m
Air Canada
Sun 14/66:10 p.m.
YXU
-
LHR
1 stop10h 25m
Air Canada
Deal found 23/4C$ 1,137

Find flight deals from Heathrow to London

Discover tips and strategies to find the most affordable flight options for your journey from Heathrow (LHR) to London (YXU). 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 April 2026.

Round-trip from

C$ 1,099

One-way from

C$ 665

Popular in

December

Cheapest in

February

Average price

C$ 1,159
Air Canada
  • Air Canada
  • 16/9-20/9
  • 3 total stops
  • 24h 15m total
  • London to London
Search Deals
8/6
  • 8/6
  • 2 total stops
  • 36h 55m total
  • London to London
Search Deals
Highest demand for flights based on searches. 44% potential increase in price (C$ 1,325 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 9% potential price decrease (C$ 149 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Heathrow to London 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 April 2026.
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 round-trip

LondonLondon

LHR - YXU

LHRYXU

London Heathrow

Wed 16/9

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

2 stops14h 00m

London

Sun 20/9

3:30 p.m.-6:35 a.m.

1 stop10h 05m

C$ 1,099

LondonLondon

LHR - YXU

LHRYXU

London Heathrow

Thu 4/6

8:45 a.m.-9:38 p.m.

2 stops17h 53m

London

Thu 11/6

6:10 p.m.-9:35 a.m.

1 stop10h 25m

C$ 1,111

LondonLondon

LHR - YXU

LHRYXU

London Heathrow

Sun 7/6

6:00 a.m.-9:38 p.m.

2 stops20h 38m

London

Sun 14/6

6:10 p.m.-9:35 a.m.

1 stop10h 25m

C$ 1,137

LondonLondon

LHR - YXU

LHRYXU

London Heathrow

Thu 4/6

7:25 a.m.-5:33 p.m.

2 stops15h 08m

London

Thu 11/6

3:30 p.m.-6:35 a.m.

1 stop10h 05m

C$ 1,150

LondonLondon

LHR - YXU

LHRYXU

London Heathrow

Sat 6/6

6:50 a.m.-2:58 p.m.

2 stops13h 08m

London

Sat 13/6

6:10 p.m.-9:35 a.m.

1 stop10h 25m

C$ 1,151

LondonLondon

LHR - YXU

LHRYXU

London Heathrow

Fri 5/6

8:30 a.m.-9:38 p.m.

2 stops18h 08m

London

Fri 12/6

6:10 p.m.-8:35 a.m.

1 stop9h 25m

C$ 1,151
Quickest round-trip

LondonLondon

LHR - YXU

LHRYXU

London Heathrow

Mon 29/6

12:05 p.m.-5:32 p.m.

1 stop10h 27m

London

Wed 8/7

6:20 p.m.-11:50 a.m.

1 stop12h 30m

C$ 1,156

LondonLondon

LHR - YXU

LHRYXU

London Heathrow

Mon 8/6

12:05 p.m.-9:38 p.m.

1 stop14h 33m

London

Mon 15/6

6:10 p.m.-9:35 a.m.

1 stop10h 25m

C$ 1,156

LondonLondon

LHR - YXU

LHRYXU

London Heathrow

Thu 4/6

5:15 p.m.-5:33 p.m.

2 stops29h 18m

London

Thu 11/6

12:20 p.m.-7:20 p.m.

2 stops26h 00m

C$ 1,158

LondonLondon

LHR - YXU

LHRYXU

London Heathrow

Thu 25/6

6:50 a.m.-2:57 p.m.

2 stops13h 07m

London

Sat 4/7

12:20 p.m.-6:35 a.m.

1 stop13h 15m

C$ 1,170

Flights are sorted by cheapest round-trip flights first.

Deals found on 24/4

Showing 1-10 of 19 resultsSorted by cheapest first
1
2

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.
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 Heathrow Airport to London

How much does it cost to fly round-trip from London Heathrow Airport to London, Ontario?

Related info for your journey

Find useful and relevant information for your journey from Heathrow to London. 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 into for flights to London from London Heathrow?

    Most people fly into London (YXU) if they book a flight to London from London Heathrow. On average, London has 0 inbound flights from London Heathrow per day from 0 airlines. London is conveniently located just 8.6 km from London’s city centre.

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

    There are many flights that can get you from London Heathrow Airport to London, Ontario in 14h. Fly via Air Canada to get the fastest option. The distance from London Heathrow Airport to London, Ontario is about 5844 km.

  • 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 vacation 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

Travelling to a place near London?

Book flights to London if you plan to visit one of these locations
Port Stanley
Grand Bend

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

Need flexible booking options for your flight to London from Heathrow? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

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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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