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Cheap flights from Montreal Pierre Elliott Trudeau Intl Airport to London Heathrow Airport from £254

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 25/5. Fares are subject to change and may not be available on all flights or dates of travel.
YUL — LHR
24 May — 31 May1
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 66 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 April 2026.

Mon 28/922:00
YUL
-
LHR
Nonstop6h 40m
British Airways
Sun 4/1018:05
LHR
-
YUL
Nonstop7h 10m
British Airways
Deal found 22/4£433
Fri 22/521:20
YUL
-
LHR
1 stop18h 40m
Air Canada
Fri 29/508:40
LHR
-
YUL
1 stop11h 20m
Air Canada
Deal found 19/4£454
Thu 21/513:10
YUL
-
LHR
1 stop12h 20m
Air Canada
Fri 29/508:40
LHR
-
YUL
1 stop11h 20m
Air Canada
Deal found 23/4£455
Thu 21/516:30
YUL
-
LHR
1 stop9h 00m
Air Canada
Wed 27/506:00
LHR
-
YUL
1 stop12h 50m
Air Canada
Deal found 20/4£457
Wed 20/516:40
YUL
-
LHR
1 stop10h 15m
SWISS
Wed 27/506:00
LHR
-
YUL
1 stop14h 00m
SWISS
Deal found 22/4£460
Sat 23/518:55
YUL
-
LHR
1 stop8h 40m
Multiple Airlines
Tue 26/520:05
LHR
-
YUL
1 stop23h 55m
Multiple Airlines
Deal found 19/4£461
Sat 2/518:40
YUL
-
LHR
Nonstop6h 50m
Air Canada
Fri 8/508:40
LHR
-
YUL
1 stop11h 20m
Air Canada
Deal found 23/4£462
Sat 2/522:10
YUL
-
LHR
Nonstop6h 50m
Multiple Airlines
Fri 8/506:00
LHR
-
YUL
1 stop14h 00m
Multiple Airlines
Deal found 22/4£463

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 April 2026.

Round-trip from

£433

One-way from

£254

Popular in

December

Cheapest in

November

Average price

£538

Good round-trip deal

£593 or less

Good one-way deal

£448 or less
British Airways
  • British Airways
  • 28/9-4/10
  • Nonstop
  • 13h 50m total
  • Montreal to London
Search Deals
25/5
  • 25/5
  • 1 total stop
  • 10h 15m total
  • Montreal to London
Search Deals
Highest demand for flights based on searches. 0% potential increase in price (£1 potential increase over avg. return price).
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 April 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 April 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

Tue 2/6

22:10-10:00

Nonstop6h 50m

London Heathrow

Sat 6/6

09:30-12:00

Nonstop7h 30m

£484

MontrealLondon

YUL - LHR

YULLHR

Montreal Pierre Elliott Trudeau Intl

Sat 23/5

15:30-10:40

2 stops14h 10m

London Heathrow

Tue 2/6

06:50-16:10

2 stops14h 20m

£515

MontrealLondon

YUL - LHR

YULLHR

Montreal Pierre Elliott Trudeau Intl

Mon 4/5

18:15-10:25

1 stop11h 10m

London Heathrow

Tue 12/5

06:50-16:10

2 stops14h 20m

£516

MontrealLondon

YUL - LHR

YULLHR

Montreal Pierre Elliott Trudeau Intl

Tue 12/5

16:25-10:40

2 stops13h 15m

London Heathrow

Sun 17/5

06:50-00:13

2 stops22h 23m

£516

MontrealLondon

YUL - LHR

YULLHR

Montreal Pierre Elliott Trudeau Intl

Mon 4/5

13:05-09:20

2 stops15h 15m

London Heathrow

Sat 9/5

10:25-17:25

1 stop12h 00m

£523

MontrealLondon

YUL - LHR

YULLHR

Montreal Pierre Elliott Trudeau Intl

Tue 19/5

15:25-07:15

1 stop10h 50m

London Heathrow

Sun 31/5

16:40-00:13

1 stop12h 33m

£523
Fastest return journey

MontrealLondon

YUL - LHR

YULLHR

Montreal Pierre Elliott Trudeau Intl

Sun 21/6

22:00-09:40

Nonstop6h 40m

London Heathrow

Tue 30/6

18:05-20:15

Nonstop7h 10m

£552

MontrealLondon

YUL - LHR

YULLHR

Montreal Pierre Elliott Trudeau Intl

Mon 11/5

13:50-09:20

2 stops14h 30m

London Heathrow

Mon 18/5

06:50-16:10

2 stops14h 20m

£587

MontrealLondon

YUL - LHR

YULLHR

Montreal Pierre Elliott Trudeau Intl

Thu 14/5

16:25-10:40

2 stops13h 15m

London Heathrow

Mon 25/5

06:50-17:25

2 stops15h 35m

£588

MontrealLondon

YUL - LHR

YULLHR

Montreal Pierre Elliott Trudeau Intl

Mon 1/6

18:35-10:40

1 stop11h 05m

London Heathrow

Sun 21/6

11:05-14:40

2 stops56h 35m

£615

Flights are sorted by cheapest return flights first.

Deals found on 23/4

Showing 1-10 of 23 resultsSorted by cheapest first
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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 65 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 £458). Flying from Montreal Pierre Elliott Trudeau Intl Airport to London Heathrow Airport in December is currently the most expensive (average of £672). 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 April 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?

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 April 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
10,964 reviews
Check prices

Boarding

7.3

Comfort

7.1

Food

6.3

Entertainment

6.8

Overall

7.1

Crew

7.8

Reviews

1 / 20
8.0
Excellent

John,Apr 2026

YVR - YOW

Crew was very attentive and meals were good. My wife required a wheel chair due to an accident on vacation. The service in Toronto was poor and Ottawa no better. Southeast Asia could teach them lots. Flight originated in Manila on ANA which was cancelled due to a mechanical issue. We were put up overnight in the Savoy Hotel with dinner and breakfast. The airline staff and hotel staff were fantastic.
Air Canada
7.1
Good
10,964 reviews
Air Canada
7.1
Good
10,964 reviews
Check prices

Boarding

7.3

Comfort

7.1

Food

6.3

Entertainment

6.8

Overall

7.1

Crew

7.8

Reviews

1 / 20
8.0
Excellent

John,Apr 2026

YVR - YOW

Crew was very attentive and meals were good. My wife required a wheel chair due to an accident on vacation. The service in Toronto was poor and Ottawa no better. Southeast Asia could teach them lots. Flight originated in Manila on ANA which was cancelled due to a mechanical issue. We were put up overnight in the Savoy Hotel with dinner and breakfast. The airline staff and hotel staff were fantastic.
British Airways
6.7
Okay
7,911 reviews
Air Canada
7.1
Good
10,964 reviews
Check prices

Boarding

7.3

Comfort

7.1

Food

6.3

Entertainment

6.8

Overall

7.1

Crew

7.8

Reviews

1 / 20
8.0
Excellent

John,Apr 2026

YVR - YOW

Crew was very attentive and meals were good. My wife required a wheel chair due to an accident on vacation. The service in Toronto was poor and Ottawa no better. Southeast Asia could teach them lots. Flight originated in Manila on ANA which was cancelled due to a mechanical issue. We were put up overnight in the Savoy Hotel with dinner and breakfast. The airline staff and hotel staff were fantastic.

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 Lufthansa and United Airlines fly from Montreal Pierre Elliott Trudeau Intl Airport to London Heathrow Airport in about 6h 50m. The time it takes to get you to your destination can typically vary by up to 7h 20m. 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 Air Canada. Our recent data shows that you can find tickets from as low as £402 on this airline. An additional option worth looking into is British Airways, starting at £409. These flights start at 25% 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 Thai Airways (85%), American Airlines (83%) or Aer Lingus (83%) 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 £442. On average you can expect to pay £607. The most popular route, (Montreal Pierre Elliott Trudeau Intl - London Heathrow), can usually be booked for £433.

  • 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 £458). Flying from Montreal Pierre Elliott Trudeau Intl Airport to London Heathrow Airport in December is currently the most expensive (average of £672). 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
Milton Keynes
Wembley
Croydon
Hounslow
Northampton
Luton
Gatwick
Ilford
Slough
Hayes
Brentford
Colchester
Watford
Kingston upon Thames
Romford
Eastbourne
Swindon
Ipswich
Southend-on-Sea
Guildford

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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 April 2026.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest£402Average£483FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
British AirwaysCheapest£409Average£599FlexibilityNo cancel feeOn-time70%
Search British Airways flights

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How does Cheapflights help users find flights from Pierre Elliott Trudeau Intl to Heathrow?

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

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

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