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$263+ Cheap flights from Pierre Elliott Trudeau Intl (YUL) to Heathrow (LHR)

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 10/15. Fares are subject to change and may not be available on all flights or dates of travel.
YUL — LHR
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheapflights Tip: The best prices from Montreal Pierre Elliott Trudeau Intl to London Heathrow are usually found in October or May, booked 69 days in advance, depart on a Sunday or Saturday and return on a Tuesday

Cheap 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 September 11, 2025.

Round-trip from

$564
(Air Canada)

One-way from

$263
(Booking.com)

Popular in

December

Cheapest in

October

Average price

$703

Good round-trip deal

$609 or less

Good one-way deal

$781 or less
From Montreal Pierre Elliott Trudeau Intl to London Heathrow
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One-way flight from Montreal Pierre Elliott Trudeau Intl to London Heathrow
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Highest demand for flights based on searches. 3% potential increase in price ($28 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($16 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Price to beat on a round-trip flight from Montreal Pierre Elliott Trudeau Intl to London Heathrow.
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Price to beat on a one-way flight from Montreal Pierre Elliott Trudeau Intl to London Heathrow.
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Find flight deals from Pierre Elliott Trudeau Intl to Heathrow

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 September 11, 2025.

This Air Canada deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/119:45 pmYUL - LHR
1 stop17h 50mAir Canada
Tue 11/189:00 amLHR - YUL
1 stop11h 10mAir Canada
Deal found 9/10$564
This Air Canada deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/236:55 pmYUL - LHR
Nonstop6h 35mAir Canada
Wed 10/86:00 amLHR - YUL
1 stop12h 50mAir Canada
Deal found 9/10$567
This Lufthansa deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/309:55 pmYUL - LHR
Nonstop6h 40mLufthansa
Mon 12/18:45 amLHR - YUL
1 stop14h 35mLufthansa
Deal found 9/11$568
This Lufthansa deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/257:10 pmYUL - LHR
Nonstop7h 00mLufthansa
Mon 12/87:40 amLHR - YUL
1 stop15h 40mLufthansa
Deal found 9/10$569
This Air Canada deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/306:55 pmYUL - LHR
Nonstop6h 35mAir Canada
Tue 10/76:50 amLHR - YUL
1 stop9h 45mAir Canada
Deal found 9/10$571
This Lufthansa deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/298:15 pmYUL - LHR
1 stop10h 35mLufthansa
Wed 11/1211:10 amLHR - YUL
1 stop12h 10mLufthansa
Deal found 9/11$575
This Cheapflightsfares deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/1510:10 pmYUL - LHR
Nonstop6h 40mBritish Airways
Wed 10/294:10 pmLHR - YUL
Nonstop7h 35mBritish Airways
Deal found 9/11$581

Cheapflights Fare Finder

 
Customize 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 2,558,603 searches. Data last updated September 11, 2025.
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

Pierre Elliott Trudeau Intl

Fly to

Heathrow

Route

Depart

Return

Price

MontrealLondon

YUL - LHR

YULLHR

Montreal Pierre Elliott Trudeau Intl

Tue 9/30

9:55 pm-9:35 am

Nonstop6h 40m

London Heathrow

Mon 12/1

8:45 am-6:20 pm

1 stop14h 35m

$568

MontrealLondon

YUL - LHR

YULLHR

Montreal Pierre Elliott Trudeau Intl

Mon 9/29

10:10 pm-9:50 am

Nonstop6h 40m

London Heathrow

Tue 10/7

6:05 pm-8:15 pm

Nonstop7h 10m

$587

MontrealLondon

YUL - LHR

YULLHR

Montreal Pierre Elliott Trudeau Intl

Sat 12/6

7:30 pm-7:10 am

Nonstop6h 40m

London Heathrow

Wed 12/10

7:40 am-6:20 pm

1 stop15h 40m

$604

MontrealLondon

YUL - LHR

YULLHR

Montreal Pierre Elliott Trudeau Intl

Mon 10/13

9:55 pm-9:35 am

Nonstop6h 40m

London Heathrow

Fri 10/24

9:30 am-11:40 am

Nonstop7h 10m

$619

MontrealLondon

YUL - LHR

YULLHR

Montreal Pierre Elliott Trudeau Intl

Tue 11/11

4:45 pm-8:45 am

1 stop11h 00m

London Heathrow

Tue 11/18

8:40 am-11:26 pm

2 stops19h 46m

$628

MontrealLondon

YUL - LHR

YULLHR

Montreal Pierre Elliott Trudeau Intl

Wed 9/24

2:20 pm-6:55 am

1 stop11h 35m

London Heathrow

Mon 9/29

12:15 pm-7:45 pm

1 stop12h 30m

$635

MontrealLondon

YUL - LHR

YULLHR

Montreal Pierre Elliott Trudeau Intl

Tue 11/11

3:00 pm-10:50 am

2 stops14h 50m

London Heathrow

Tue 11/18

8:00 am-5:55 pm

2 stops14h 55m

$635

MontrealLondon

YUL - LHR

YULLHR

Montreal Pierre Elliott Trudeau Intl

Sat 11/22

7:10 pm-7:10 am

Nonstop7h 00m

London Heathrow

Sun 11/30

11:10 am-6:20 pm

1 stop12h 10m

$641

MontrealLondon

YUL - LHR

YULLHR

Montreal Pierre Elliott Trudeau Intl

Mon 9/29

8:15 pm-11:50 am

1 stop10h 35m

London Heathrow

Thu 12/4

6:35 am-6:23 pm

2 stops16h 48m

$644

MontrealLondon

YUL - LHR

YULLHR

Montreal Pierre Elliott Trudeau Intl

Thu 12/4

3:10 pm-6:30 am

1 stop10h 20m

London Heathrow

Tue 12/9

7:15 pm-11:45 am

2 stops21h 30m

$646

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/11

Showing 1-10 of 22 results
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The best insider tips for Montreal Pierre Elliott Trudeau Intl Airport to London Heathrow Airport flights

Snippets provided in this section are AI-generated based on a summarization of Cheapflights-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
Cheapflights partnered with top experts to bring you the best recommendations for your Montreal Pierre Elliott Trudeau Intl Airport to London Heathrow Airport trip
Airlines
Air Canada

Air Canada's Signature Class features lie-flat seats and exclusive lounge access.


Air Canada offers complimentary meals for all fare classes on international flights.

Read more about Air Canadaby Jessica Macdonald
British Airways

BA's Club Suite offers private pods with a door, ideal for long-haul comfort.


BA's World Traveller Plus offers extra seat width and legroom, enhancing comfort.

Read more about British Airwaysby Gabriel Leigh
Airports
YUL

Use YULExpress to pre-book security fast track up to 72 hours before departure for a smoother experience.

Read more about YULby John Walton
LHR

Take the Heathrow Express for the fastest route to central London, arriving at Paddington Station.

Read more about LHRby Ramsey Qubein
Our travel experts
Jessica Macdonald

Jessica Macdonald

Expert on Air Canada

Jessica Macdonald

Jessica Macdonald

Currently based in Scotland after living in South Africa and the United States, Jessica has been writing travel and aviation content for more than 10 years. She regularly contributes to Travel + Leisure and TripSavvy, and has had work published by Condé Nast Traveller and The Independent. She has traveled to more than 50 countries across six continents.

Read more
Gabriel Leigh

Gabriel Leigh

Expert on British Airways

Gabriel Leigh

Gabriel Leigh

Gabriel is a writer and video creator. As senior content producer for Flightradar24 and Monocle’s transport correspondent, he keeps a close eye on aviation in particular. He has also written travel articles for the likes of The New York Times. Born in New York but raised around the world, he now lives in Sweden. He’s been to 75 countries, flying 2.3 million miles on 113 airlines and through 234 airports in the process.

Read more
John Walton

John Walton

Expert on YUL

John Walton

John Walton

Independent aviation journalist John Walton took his first flight at eight weeks old and hasn’t stopped travelling since. A world-renowned expert in airlines and the passenger experience, he writes in depth on aviation, is a resident expert on travel in Japan and France, and offers a uniquely queer perspective on travelling the world.

Read more
Ramsey Qubein

Ramsey Qubein

Expert on LHR

Ramsey Qubein

Ramsey Qubein

An avid traveler and aviation expert who has visited 173 countries, all 50 states and seven continents, Ramsey Qubein flies nearly 400,000 miles a year. As a North Carolina-based freelance journalist for publications including Conde Nast Traveler, Forbes, USA Today and Bloomberg among others, he explores the latest trends in aviation, hospitality, cruises and business.

Read more

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 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 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?

Use this chart to determine the optimal time to book a round-trip flight from Pierre Elliott Trudeau Intl to Heathrow. Price data was last updated on August 29, 2025.

Booking 69 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 $661). Flying from Montreal Pierre Elliott Trudeau Intl Airport to London Heathrow Airport in June is currently the most expensive (average of $1,098). 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 September 11, 2025.

It’s typically best to fly out from Montreal Pierre Elliott Trudeau Intl Airport to London Heathrow Airport in the morning. Doing so could potentially save you 20% on the flight price compared to flying in the afternoon, which is usually more expensive.

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 September 11, 2025.
Read reviews from past customers who have flown American Airlines, Air Canada, and Lufthansa from Montreal Pierre Elliott Trudeau Intl Airport to London Heathrow Airport. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
American Airlines
7.2
Good
10,000 reviews

Boarding

7.5

Overall

7.2

Entertainment

6.9

Food

6.4

Comfort

7.2

Crew

8.0

Reviews

1 / 20
6.0
Good

Alison,May 2025

LHR - MAN

Gate staff were confused and passengers openly incredulous at lack of organisation and information to the extent that for a while we all believed entry to the gate would be via a coffee shop. It was embarrassing to see US passengers so derisive of the ground crew’s ineptitude.
American Airlines
7.2
Good
10,000 reviews
American Airlines
7.2
Good
10,000 reviews

Boarding

7.5

Overall

7.2

Entertainment

6.9

Food

6.4

Comfort

7.2

Crew

8.0

Reviews

1 / 20
6.0
Good

Alison,May 2025

LHR - MAN

Gate staff were confused and passengers openly incredulous at lack of organisation and information to the extent that for a while we all believed entry to the gate would be via a coffee shop. It was embarrassing to see US passengers so derisive of the ground crew’s ineptitude.
Air Canada
7.1
Good
10,000 reviews
American Airlines
7.2
Good
10,000 reviews

Boarding

7.5

Overall

7.2

Entertainment

6.9

Food

6.4

Comfort

7.2

Crew

8.0

Reviews

1 / 20
6.0
Good

Alison,May 2025

LHR - MAN

Gate staff were confused and passengers openly incredulous at lack of organisation and information to the extent that for a while we all believed entry to the gate would be via a coffee shop. It was embarrassing to see US passengers so derisive of the ground crew’s ineptitude.
Lufthansa
6.8
Okay
7,409 reviews
American Airlines
7.2
Good
10,000 reviews

Boarding

7.5

Overall

7.2

Entertainment

6.9

Food

6.4

Comfort

7.2

Crew

8.0

Reviews

1 / 20
6.0
Good

Alison,May 2025

LHR - MAN

Gate staff were confused and passengers openly incredulous at lack of organisation and information to the extent that for a while we all believed entry to the gate would be via a coffee shop. It was embarrassing to see US passengers so derisive of the ground crew’s ineptitude.
British Airways
6.7
Okay
7,361 reviews
American Airlines
7.2
Good
10,000 reviews

Boarding

7.5

Overall

7.2

Entertainment

6.9

Food

6.4

Comfort

7.2

Crew

8.0

Reviews

1 / 20
6.0
Good

Alison,May 2025

LHR - MAN

Gate staff were confused and passengers openly incredulous at lack of organisation and information to the extent that for a while we all believed entry to the gate would be via a coffee shop. It was embarrassing to see US passengers so derisive of the ground crew’s ineptitude.

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?

    Departing from Montreal Pierre Elliott Trudeau Intl Airport to London Heathrow Airport will take you 6h 40m. Montreal Pierre Elliott Trudeau Intl Airport and London Heathrow Airport are separated by a distance of 3239 mi. Both multi-stop and nonstop 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?

    Flying on Air Canada is currently your cheapest option to London Heathrow Airport, with prices starting at $543. Additional round-trip tickets that might be worth considering are offered by Lufthansa and British Airways, with the lowest prices starting at $545 and $629, respectively. Air Canada is 26% cheaper than the average price of flights available within the next 90 days to this destination.

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

    Before booking your flight to London Heathrow Airport from Montreal Pierre Elliott Trudeau Intl Airport, check out the most reliable airlines to get you to your destination on time: American Airlines (70%), Aer Lingus (70%), Finnair( 70%).

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

    While on average a flight from Montreal Pierre Elliott Trudeau Intl Airport to London Heathrow Airport is generally $1,069, our data shows the cheapest flight currently is $442. When looking at the most popular route, (Montreal Pierre Elliott Trudeau Intl - London Heathrow), you can expect to pay $483 for that flight.

  • 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 vacation 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 $661). Flying from Montreal Pierre Elliott Trudeau Intl Airport to London Heathrow Airport in June is currently the most expensive (average of $1,098). 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

Traveling to a place near London Heathrow Airport?

Book flights to London Heathrow Airport if you plan to visit one of these locations
Hounslow
Hayes
Thornton Heath
Southend-on-Sea
Harrow
Canterbury
Croydon
Eastleigh
Dartford
Dover
Winchester
Orpington
Northampton
Gatwick
Borehamwood
Broadway
Aylesbury
Bedford
Wembley
Folkestone

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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

Top 4 airlines flying from Pierre Elliott Trudeau Intl to Heathrow

Discover the top 4 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 2,558,603 searches. Data last updated September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$543Average$730FlexibilityNo cancel feeOn-time67%
LufthansaCheapest$545Average$765FlexibilityNo cancel feeOn-time76%
British AirwaysCheapest$629Average$748FlexibilityNo cancel feeOn-time70%
American AirlinesCheapest$690Average$845FlexibilityNo cancel feeOn-time71%

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