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Cheap flights from Montreal Pierre Elliott Trudeau Intl Airport to London Heathrow Airport from £234

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 8/8. Fares are subject to change and may not be available on all flights or dates of travel.
YUL — LHR
23 Aug — 30 Aug1
1 adult
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from Montreal Pierre Elliott Trudeau Intl to London Heathrow are usually found in November or October, booked 81 days in advance, depart on a Sunday or Friday and return on a Friday

Cheap flight deals from Pierre Elliott Trudeau Intl to Heathrow

Enter your travel dates to find the best prices.

Cheapest flights from Pierre Elliott Trudeau Intl to Heathrow
Explore the most affordable flight options available from Pierre Elliott Trudeau Intl to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 24 July 2026.

Fri 20/1121:45
YUL
-
LHR
1 stop18h 50m
TAP AIR PORTUGAL
Fri 27/1106:00
LHR
-
YUL
1 stop18h 55m
TAP AIR PORTUGAL
Deal found 19/7£400
Fri 20/1121:45
YUL
-
LHR
1 stop16h 10m
TAP AIR PORTUGAL
Fri 4/1212:25
LHR
-
YUL
1 stop12h 30m
TAP AIR PORTUGAL
Deal found 21/7£402
Sun 27/922:45
YUL
-
LHR
1 stop18h 15m
TAP AIR PORTUGAL
Wed 7/1018:45
LHR
-
YUL
1 stop31h 25m
TAP AIR PORTUGAL
Deal found 19/7£405
Fri 9/1017:30
YUL
-
LHR
1 stop13h 20m
Multiple Airlines
Sun 11/1008:55
LHR
-
YUL
2 stops35h 05m
Multiple Airlines
Deal found 22/7£407
Wed 7/1022:45
YUL
-
LHR
1 stop19h 10m
TAP AIR PORTUGAL
Wed 14/1018:45
LHR
-
YUL
1 stop31h 25m
TAP AIR PORTUGAL
Deal found 20/7£407
Fri 27/1121:45
YUL
-
LHR
1 stop14h 45m
TAP AIR PORTUGAL
Sun 13/1212:25
LHR
-
YUL
1 stop12h 30m
TAP AIR PORTUGAL
Deal found 22/7£410
Tue 15/920:40
YUL
-
LHR
1 stop30h 35m
Multiple Airlines
Fri 18/906:30
LHR
-
YUL
1 stop17h 55m
Multiple Airlines
Deal found 20/7£411
Wed 11/1121:45
YUL
-
LHR
1 stop12h 45m
TAP AIR PORTUGAL
Sun 22/1108:15
LHR
-
YUL
1 stop16h 40m
TAP AIR PORTUGAL
Deal found 22/7£412
Wed 18/1121:45
YUL
-
LHR
1 stop14h 45m
TAP AIR PORTUGAL
Wed 25/1106:00
LHR
-
YUL
1 stop18h 55m
TAP AIR PORTUGAL
Deal found 19/7£416

Find flight deals from Pierre Elliott Trudeau Intl to Heathrow

Discover tips and strategies to find the most affordable flight options for your journey from Pierre Elliott Trudeau Intl (YUL) 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 24 July 2026.

Round-trip from

£400

One-way from

£234

Popular in

December

Cheapest in

November

Average price

£607

Good round-trip deal

£505 or less

Good one-way deal

£361 or less
TAP AIR PORTUGAL
  • TAP AIR PORTUGAL
  • 20/11-27/11
  • 2 total stops
  • 37h 45m total
  • Montreal to London
Search Deals
8/8
  • 8/8
  • 1 total stop
  • 10h 15m total
  • Montreal to London
Search Deals
High demand for flights, 0% potential price rise
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£9 potential savings vs. average return price).
Search Deals
Average for round-trip flights in July 2026
Search Deals
Price to beat on a round-trip flight from Montreal Pierre Elliott Trudeau Intl to London Heathrow.
Search Deals
Price to beat on a one-way flight from Montreal Pierre Elliott Trudeau Intl to London Heathrow.
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Pierre Elliott Trudeau Intl 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 858,174 searches. Data last updated 24 July 2026.
Use the filters below to find and compare flights from Montreal Pierre Elliott Trudeau Intl Airport to London Heathrow Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

MontrealLondon

YUL - LHR

YULLHR

Montreal Pierre Elliott Trudeau Intl

Sun 18/10

18:50-16:15

1 stop16h 25m

London Heathrow

Mon 26/10

06:20-16:20

1 stop14h 00m

£501

MontrealLondon

YUL - LHR

YULLHR

Montreal Pierre Elliott Trudeau Intl

Mon 31/8

18:50-10:45

1 stop10h 55m

London Heathrow

Sun 6/9

14:45-20:05

1 stop10h 20m

£503

MontrealLondon

YUL - LHR

YULLHR

Montreal Pierre Elliott Trudeau Intl

Wed 16/9

16:25-10:40

2 stops13h 15m

London Heathrow

Mon 21/9

06:50-16:10

2 stops14h 20m

£509

MontrealLondon

YUL - LHR

YULLHR

Montreal Pierre Elliott Trudeau Intl

Mon 28/9

19:43-06:20

1 stop29h 37m

London Heathrow

Sun 4/10

06:30-18:53

2 stops17h 23m

£515

MontrealLondon

YUL - LHR

YULLHR

Montreal Pierre Elliott Trudeau Intl

Thu 1/10

14:25-07:15

1 stop11h 50m

London Heathrow

Mon 5/10

11:45-08:33

2 stops25h 48m

£515

MontrealLondon

YUL - LHR

YULLHR

Montreal Pierre Elliott Trudeau Intl

Tue 25/8

17:10-13:45

2 stops15h 35m

London Heathrow

Tue 1/9

09:55-16:55

1 stop12h 00m

£517

MontrealLondon

YUL - LHR

YULLHR

Montreal Pierre Elliott Trudeau Intl

Sat 8/8

14:29-12:05

1 stop16h 36m

London Heathrow

Thu 20/8

09:40-18:54

2 stops14h 14m

£520

MontrealLondon

YUL - LHR

YULLHR

Montreal Pierre Elliott Trudeau Intl

Wed 5/8

09:30-06:20

1 stop15h 50m

London Heathrow

Wed 19/8

16:20-08:39

1 stop21h 19m

£520

MontrealLondon

YUL - LHR

YULLHR

Montreal Pierre Elliott Trudeau Intl

Thu 19/11

19:10-07:10

Nonstop7h 00m

London Heathrow

Fri 27/11

13:00-15:35

Nonstop7h 35m

£521

MontrealLondon

YUL - LHR

YULLHR

Montreal Pierre Elliott Trudeau Intl

Fri 21/8

18:40-06:30

Nonstop6h 50m

London Heathrow

Fri 28/8

12:40-18:20

1 stop10h 40m

£524

Flights are sorted by cheapest return flights first.

Deals found on 20/7

Showing 1-10 of 24 resultsSorted by cheapest first
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2
3

Best time to book a flight from Pierre Elliott Trudeau Intl to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from Pierre Elliott Trudeau Intl 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 Montreal Pierre Elliott Trudeau Intl Airport to London Heathrow Airport

How far ahead should I book a flight from Montreal Pierre Elliott Trudeau Intl Airport to London Heathrow Airport?

Booking 80 days in advance of your planned departure date is, on average, the best time to get cheap flights from Montreal Pierre Elliott Trudeau Intl Airport to London Heathrow Airport. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Montreal Pierre Elliott Trudeau Intl Airport to London Heathrow Airport?

Currently, November is the cheapest month in which you can book a flight from Montreal Pierre Elliott Trudeau Intl Airport to London Heathrow Airport (average of £467). Flying from Montreal Pierre Elliott Trudeau Intl Airport to London Heathrow Airport in December is currently the most expensive (average of £674). 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 YUL to LHR?

Find hourly flight availability from Pierre Elliott Trudeau Intl 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 24 July 2026.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Montreal Pierre Elliott Trudeau Intl Airport to London Heathrow Airport as you normally would.

How much does it cost for a return flight from Montreal Pierre Elliott Trudeau Intl Airport to London Heathrow Airport?

Airfare is below average for this route at the moment.

Montreal Pierre Elliott Trudeau Intl Airport to London Heathrow Airport flights typically cost between £559 and £696 in November.
The cheapest return price found within the last 5 days was £400 on TAP AIR PORTUGAL (20 Nov–27 Nov).

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 24 July 2026.
Read through reviews of airlines operating flights from Montreal Pierre Elliott Trudeau Intl Airport to London Heathrow Airport, such as Air Canada and British Airways. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Air Canada
7.1
Good
11,377 reviews
Check prices

Entertainment

6.8

Comfort

7.1

Crew

7.8

Overall

7.1

Food

6.3

Boarding

7.3

Reviews

1 / 20
2.0
Mediocre

Anonymous,Jun 2026

YUL - LYS

The flight was cancelled. We were rebooked the next day on Air France but had a 12 hour layover in Paris. We lost 1 1/2 days of our vacation.
Air Canada
7.1
Good
11,377 reviews
Air Canada
7.1
Good
11,377 reviews
Check prices

Entertainment

6.8

Comfort

7.1

Crew

7.8

Overall

7.1

Food

6.3

Boarding

7.3

Reviews

1 / 20
2.0
Mediocre

Anonymous,Jun 2026

YUL - LYS

The flight was cancelled. We were rebooked the next day on Air France but had a 12 hour layover in Paris. We lost 1 1/2 days of our vacation.
British Airways
6.7
Okay
8,129 reviews
Air Canada
7.1
Good
11,377 reviews
Check prices

Entertainment

6.8

Comfort

7.1

Crew

7.8

Overall

7.1

Food

6.3

Boarding

7.3

Reviews

1 / 20
2.0
Mediocre

Anonymous,Jun 2026

YUL - LYS

The flight was cancelled. We were rebooked the next day on Air France but had a 12 hour layover in Paris. We lost 1 1/2 days of our vacation.

Related info for your journey

Find useful and relevant information for your journey from Pierre Elliott Trudeau Intl to Heathrow. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Montreal Pierre Elliott Trudeau Intl Airport to London Heathrow Airport?

    Airlines like Virgin Atlantic, Delta, and United Airlines fly from Montreal Pierre Elliott Trudeau Intl Airport to London Heathrow Airport in about 10h 55m. The time it takes to get you to your destination can typically vary by up to 5h 30m. The distance from Montreal Pierre Elliott Trudeau Intl Airport to London Heathrow Airport is about 3239 mi. Both multi-stop and direct flights can be found to your destination and back.

  • What are the cheapest airlines flying from Montreal Pierre Elliott Trudeau Intl Airport to London Heathrow Airport round-trip?

    Our cheapest airline available from Montreal Pierre Elliott Trudeau Intl Airport to London Heathrow Airport is British Airways. Our recent data shows that you can find tickets from as low as £413 on this airline. An additional option worth looking into is Air Canada, starting at £426. These flights start at 26% lower than the current average price 3 months from now.

  • What are the most reliable airlines from Montreal Pierre Elliott Trudeau Intl Airport to London Heathrow Airport?

    Consider Austrian Airlines (80%), United Airlines (80%) or Lufthansa (80%) when booking your flight. These represent the most reliable airlines when flying from Montreal Pierre Elliott Trudeau Intl Airport to London Heathrow Airport.

  • What are the cheapest flights from Montreal Pierre Elliott Trudeau Intl Airport to London Heathrow Airport?

    The cheapest flight price from Montreal Pierre Elliott Trudeau Intl Airport to London Heathrow Airport is £361. On average you can expect to pay £840. The most popular route, (Montreal Pierre Elliott Trudeau Intl - London Heathrow), can usually be booked for £379.

  • Can I find deals for flights from Pierre Elliott Trudeau Intl to Heathrow that include hotel bookings?

    Yes. In addition to deals on Pierre Elliott Trudeau Intl to Heathrow flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Pierre Elliott Trudeau Intl to Heathrow?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Pierre Elliott Trudeau Intl to Heathrow.

  • Can I find deals for business class flights from Pierre Elliott Trudeau Intl to Heathrow?

    Yes. Cheapflights offers flight deals from Pierre Elliott Trudeau Intl 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 Montreal Pierre Elliott Trudeau Intl Airport to London Heathrow Airport?

    Currently, November is the cheapest month in which you can book a flight from Montreal Pierre Elliott Trudeau Intl Airport to London Heathrow Airport (average of £467). Flying from Montreal Pierre Elliott Trudeau Intl Airport to London Heathrow Airport in December is currently the most expensive (average of £674). 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
Hounslow
Milton Keynes
Luton
Wembley
Gatwick
Slough
Ilford
Hayes
Croydon
Colchester
Brentford
Eastbourne
Northampton
Watford
Swindon
Southend-on-Sea
Poole
Kingston upon Thames
Southall
Aylesbury

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Alternative routes for Pierre Elliott Trudeau Intl to Heathrow

See prices for flight routes from nearby airports that may be better suited for you.
Pierre Elliott Trudeau Intl to Gatwick flights
Pierre Elliott Trudeau Intl to Stansted flights

Top 2 airlines flying from Pierre Elliott Trudeau Intl to Heathrow

Discover the top 2 airlines that operate flights from Pierre Elliott Trudeau Intl 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 858,174 searches. Data last updated 24 July 2026.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest£413Average£606FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Air CanadaCheapest£426Average£510FlexibilityNo cancel feeOn-time67%
Search Air Canada flights

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Can Cheapflights find flights from Pierre Elliott Trudeau Intl to Heathrow with no change fees?

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