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Cheap flights from London Heathrow Airport to London, Ontario from £355

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 21/1. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — YXU
26 Dec — 2 Jan1
1 adult
1 adult, Economy, 0 bags

Find 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 26 November 2025.

Mon 22/1214:50LHR - YXU
1 stop20h 44mWestJet
Mon 29/1220:10YXU - LHR
1 stop35h 40mWestJet
Deal found 24/11£833
Mon 22/1213:25LHR - YXU
2 stops24h 21mAir Canada
Mon 29/1209:25YXU - LHR
1 stop20h 55mAir Canada
Deal found 24/11£870
Mon 22/1214:50LHR - YXU
2 stops22h 56mMultiple Airlines
Mon 29/1205:10YXU - LHR
3 stops34h 25mMultiple Airlines
Deal found 24/11£1,471
Mon 22/1207:55LHR - YXU
2 stops29h 51mUnited Airlines
Mon 29/1209:25YXU - LHR
2 stops15h 55mUnited Airlines
Deal found 24/11£1,950

Cheap 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 26 November 2025.

Round-trip from

£536

One-way from

£355

Popular in

August

Cheapest in

January

Average price

£572
Lufthansa
  • Lufthansa
  • 8/1-15/1
  • 3 total stops
  • 22h 55m total
  • London to London
Search Deals
21/1
  • 21/1
  • 3 total stops
  • 25h 44m total
  • London to London
Search Deals
Highest demand for flights based on searches. 11% potential increase in price (£57 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£13 potential savings vs. average return price).
Search Deals
Average for round-trip flights in November 2025
Search Deals

Cheapflights Fare Finder

 
Customise 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 858,174 searches. Data last updated 26 November 2025.
Use the filters below to find and compare flights from London Heathrow Airport to London that are best for you.

Fly from

Heathrow

Fly to

London

Route

Depart

Return

Price

LondonLondon

LHR - YXU

LHRYXU

London Heathrow

Thu 8/1

09:00-17:05

2 stops13h 05m

London

Thu 15/1

09:25-08:30

1 stop18h 05m

£537

LondonLondon

LHR - YXU

LHRYXU

London Heathrow

Fri 9/1

09:00-17:05

2 stops13h 05m

London

Fri 16/1

17:40-11:20

1 stop12h 40m

£542

LondonLondon

LHR - YXU

LHRYXU

London Heathrow

Sat 10/1

09:00-17:05

2 stops13h 05m

London

Sat 17/1

17:40-11:20

1 stop12h 40m

£547

LondonLondon

LHR - YXU

LHRYXU

London Heathrow

Wed 21/1

09:50-06:34

3 stops25h 44m

£355

LondonLondon

LHR - YXU

LHRYXU

London Heathrow

Sun 17/5

08:50-21:27

2 stops17h 37m

£418

LondonLondon

LHR - YXU

LHRYXU

London Heathrow

Thu 8/1

11:10-17:05

1 stop10h 55m

£562

LondonLondon

LHR - YXU

LHRYXU

London Heathrow

Thu 8/1

06:00-21:21

3 stops20h 21m

£594

LondonLondon

LHR - YXU

LHRYXU

London Heathrow

Mon 15/12

06:00-08:46

3 stops31h 46m

£635

LondonLondon

LHR - YXU

LHRYXU

London Heathrow

Fri 9/1

14:30-08:46

1 stop23h 16m

£755

Flights are sorted by cheapest return flights first.

Deals found on 24/11

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 return 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

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

Currently, March is the cheapest month in which you can book a flight from London Heathrow Airport to London, Ontario (average of £310). Flying from London Heathrow Airport to London, Ontario in December is currently the most expensive (average of £387). 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 London

Get insights into the airlines that provide service to London. 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 London. Reviews last updated 26 November 2025.
See what other customers who have flown with Air Canada from London Heathrow Airport to London have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Air Canada
7.1
Good
10,476 reviews
Check prices

Crew

7.8

Entertainment

6.8

Overall

7.1

Comfort

7.1

Food

6.3

Boarding

7.3

Reviews

1 / 20
2.0
Mediocre

Shawna,Sept 2025

DCA - YYZ

Business class cabin was *freezing*. Landing was so hard it injured my back - no apology or explanation given
Air Canada
7.1
Good
10,476 reviews
Air Canada
7.1
Good
10,476 reviews
Check prices

Crew

7.8

Entertainment

6.8

Overall

7.1

Comfort

7.1

Food

6.3

Boarding

7.3

Reviews

1 / 20
2.0
Mediocre

Shawna,Sept 2025

DCA - YYZ

Business class cabin was *freezing*. Landing was so hard it injured my back - no apology or explanation given

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?

    London (YXU), located 5.3 mi from the city center, is the airport you fly into when you book flights from London Heathrow to London. 1 airline have flights to London from London Heathrow on a regular basis. Booking flights from London Heathrow to London should not be difficult; the airport handles an average of 0 inbound flights from London Heathrow per day.

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

    For as low as £537, Lufthansa can have you in London, Ontario from London Heathrow Airport in 13h 05m. The distance from London Heathrow Airport to London, Ontario is about 3631 mi.

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

    Our cheapest airline available from London Heathrow Airport to London, Ontario is Air Canada. Our recent data shows that you can find tickets from as low as £481 on this airline. Air Canada is currently priced 15% below the average price you’ll pay for this route.

  • 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 holiday 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.

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

    Currently, March is the cheapest month in which you can book a flight from London Heathrow Airport to London, Ontario (average of £310). Flying from London Heathrow Airport to London, Ontario in December is currently the most expensive (average of £387). 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

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Alternative routes for Heathrow to London

See prices for flight routes from nearby airports that may be better suited for you.
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Stansted to Pierre Elliott Trudeau Intl flights
Luton to Pierre Elliott Trudeau Intl flights
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Southend to Pearson Intl flights
Gatwick to Ottawa flights
London City to Ottawa flights
Heathrow to Windsor flights
Stansted to Ottawa flights
London City to London flights
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Heathrow to Thunder Bay flights
Stansted to London flights
London City to Thunder Bay flights
Heathrow to Sarnia flights
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Gatwick to Thunder Bay flights
Heathrow to North Bay flights
Gatwick to Region of Waterloo Intl flights

Top airline flying from Heathrow to London

Discover the top airline that operate flights from Heathrow to London. 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 858,174 searches. Data last updated 26 November 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest£481Average£641FlexibilityNo cancel feeOn-time67%
Search Air Canada flights

Fly with Cheapflights

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

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Millions of users choose and trust Cheapflights to book the best flight deals from Heathrow to London for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

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

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

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

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to London from Heathrow today and book when prices fit your budget.

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