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Cheap flights from London, ON to London Heathrow Airport from C$ 491

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 9/12. Fares are subject to change and may not be available on all flights or dates of travel.
YXU — LHR
26 Nov — 3 Dec1
1 adult
1 adult, Economy, 0 bags

Find 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 27 October 2025.

Tue 9/125:40 p.m.YXU - LHR
1 stop12h 40mAir Canada
Tue 16/126:00 a.m.LHR - YXU
2 stops16h 05mAir Canada
Deal found 25/10C$ 1,064
Mon 10/118:10 p.m.YXU - LHR
1 stop35h 40mWestJet
Mon 24/112:50 p.m.LHR - YXU
1 stop33h 22mWestJet
Deal found 27/10C$ 1,107
Thu 11/129:25 a.m.YXU - LHR
2 stops16h 45mAir Canada
Thu 18/121:25 p.m.LHR - YXU
2 stops24h 21mAir Canada
Deal found 27/10C$ 1,234
Tue 9/125:10 a.m.YXU - LHR
3 stops26h 40mMultiple Airlines
Tue 16/126:30 a.m.LHR - YXU
3 stops29h 04mMultiple Airlines
Deal found 25/10C$ 1,300
Thu 11/125:10 a.m.YXU - LHR
2 stops25h 05mUnited Airlines
Thu 18/121:35 p.m.LHR - YXU
2 stops24h 11mUnited Airlines
Deal found 27/10C$ 1,310
Mon 10/115:15 a.m.YXU - LHR
2 stops20h 55mMultiple Airlines
Mon 24/116:35 a.m.LHR - YXU
2 stops15h 30mMultiple Airlines
Deal found 27/10C$ 1,345
Mon 10/115:40 p.m.YXU - LHR
1 stop12h 40mLufthansa
Mon 24/117:40 a.m.LHR - YXU
2 stops14h 25mLufthansa
Deal found 27/10C$ 1,352

Cheap 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 27 October 2025.

Round-trip from

C$ 939

One-way from

C$ 491

Popular in

December

Cheapest in

October

Average price

C$ 960
Air Canada
  • Air Canada
  • 20/2-24/2
  • 4 total stops
  • 66h 46m total
  • London to London
Search Deals
WestJet
  • WestJet
  • 9/12
  • 1 total stop
  • 35h 40m total
  • London to London
Search Deals
Highest demand for flights based on searches. 24% potential increase in price (C$ 555 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease (C$ 98 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
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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 27 October 2025.
Use the filters below to find and compare flights from London to London Heathrow Airport that are best for you.

Fly from

London

Fly to

Heathrow

Route

Depart

Return

Price

LondonLondon

YXU - LHR

YXULHR

London

Fri 20/2

5:40 p.m.-8:35 p.m.

2 stops21h 55m

London Heathrow

Tue 24/2

1:45 p.m.-9:21 p.m.

2 stops36h 36m

C$ 940

LondonLondon

YXU - LHR

YXULHR

London

Fri 20/2

5:40 p.m.-11:50 a.m.

1 stop13h 10m

London Heathrow

Tue 24/2

11:10 a.m.-9:21 p.m.

1 stop15h 11m

C$ 964

LondonLondon

YXU - LHR

YXULHR

London

Tue 9/12

9:25 a.m.-7:10 a.m.

2 stops16h 45m

London Heathrow

Tue 16/12

6:00 a.m.-5:05 p.m.

2 stops16h 05m

C$ 1,064

LondonLondon

YXU - LHR

YXULHR

London

Tue 9/12

5:40 p.m.-11:20 a.m.

1 stop12h 40m

London Heathrow

Tue 16/12

6:00 a.m.-5:05 p.m.

2 stops16h 05m

C$ 1,064

LondonLondon

YXU - LHR

YXULHR

London

Mon 10/11

8:10 p.m.-12:50 p.m.

1 stop35h 40m

London Heathrow

Mon 24/11

2:50 p.m.-7:12 p.m.

1 stop33h 22m

C$ 1,107

LondonLondon

YXU - LHR

YXULHR

London

Thu 11/12

9:25 a.m.-7:10 a.m.

2 stops16h 45m

London Heathrow

Thu 18/12

6:00 p.m.-8:46 a.m.

1 stop19h 46m

C$ 1,234

LondonLondon

YXU - LHR

YXULHR

London

Tue 9/12

8:10 p.m.-12:50 p.m.

1 stop35h 40m

C$ 491

LondonLondon

YXU - LHR

YXULHR

London

Wed 10/12

8:10 p.m.-12:50 p.m.

1 stop35h 40m

C$ 493

LondonLondon

YXU - LHR

YXULHR

London

Wed 12/11

9:25 a.m.-6:30 a.m.

1 stop16h 05m

C$ 561

LondonLondon

YXU - LHR

YXULHR

London

Tue 9/12

5:40 p.m.-8:30 a.m.

1 stop9h 50m

C$ 561

Flights are sorted by cheapest round-trip flights first.

Deals found on 25/10

Showing 1-10 of 14 results
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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, March is the cheapest month in which you can book a flight from London, Ontario to London Heathrow Airport (average of C$ 675). Flying from London, Ontario to London Heathrow Airport in July is currently the most expensive (average of C$ 925). 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.

What is the cheapest time of day to fly from YXU to LHR?

Find hourly flight availability from London to Heathrow. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 27 October 2025.

A simple way to save on the total cost of your ticket is to fly from London, Ontario to London Heathrow Airport in the evening. If you’re flexible enough to do this you can expect to save up to 12% on your trip compared to booking a flight in the morning.

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 27 October 2025.
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
10,370 reviews
Check prices

Boarding

7.3

Crew

7.8

Comfort

7.1

Food

6.3

Overall

7.1

Entertainment

6.8

Reviews

1 / 20
10.0
Excellent

janet,Sep 2025

YOW - YYZ

Really appreciated the leg room despite purchasing an economy ticket. Appreciated the extra complimentary wine. Nice touch. Was given immediate support without asking at check in, at the machine!! Ottawa's boarding was very organized with distinct rows in waiting room. Allowed for the main hall to not be blocked by people waiting to board.
Air Canada
7.1
Good
10,370 reviews
Air Canada
7.1
Good
10,370 reviews
Check prices

Boarding

7.3

Crew

7.8

Comfort

7.1

Food

6.3

Overall

7.1

Entertainment

6.8

Reviews

1 / 20
10.0
Excellent

janet,Sep 2025

YOW - YYZ

Really appreciated the leg room despite purchasing an economy ticket. Appreciated the extra complimentary wine. Nice touch. Was given immediate support without asking at check in, at the machine!! Ottawa's boarding was very organized with distinct rows in waiting room. Allowed for the main hall to not be blocked by people waiting to board.

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 13h 10m. Air Canada provides one of the quickest options available for as low as C$ 964. Airlines will cover a distance of 5844 km. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

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

    Air Canada, at C$ 877, was found to be the cheapest airline from London, Ontario to London Heathrow Airport.. This flight start at 29% lower than the current average price 3 months from now.

  • 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, March is the cheapest month in which you can book a flight from London, Ontario to London Heathrow Airport (average of C$ 675). Flying from London, Ontario to London Heathrow Airport in July is currently the most expensive (average of C$ 925). 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
Sutton
Hounslow
Slough
Marlow
Leamington Spa
Milton Keynes
Romford
Watford
Bedford
Luton
Stratford-upon-Avon
Southall
Gatwick

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Alternative routes for London to Heathrow

See prices for flight routes from nearby airports that may be better suited for you.
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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 27 October 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapestC$ 877AverageC$ 1,240FlexibilityNo 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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