HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
London

$341+ Cheap flights from Pierre Elliott Trudeau Intl (YUL) to London (LON)

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 11/9. Fares are subject to change and may not be available on all flights or dates of travel.
YUL — LON
jun 17 — jun 241
qua 6/17
qua 6/24
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Pierre Elliott Trudeau Intl to London with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.
Cheapflights Tip: The best prices from Montreal Pierre Elliott Trudeau Intl to London are usually found in November or September, booked 23 days in advance, depart on a Saturday or Sunday and return on a Thursday

Cheap flight deals from Pierre Elliott Trudeau Intl to London

Cheapest flights from Pierre Elliott Trudeau Intl to London
Explore the most affordable flight options available from Pierre Elliott Trudeau Intl to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on maio 18, 2026.

This Porter Airlines deal was found by Cheapflights users on 5/14. 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 Porter Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ter 5/1910:05 pm
YUL
-
LGW
Nonstop6h 45m
Porter Airlines
dom 5/3111:35 am
LGW
-
YUL
Nonstop7h 40m
Porter Airlines
Deal found 5/14$620
This Porter Airlines deal was found by Cheapflights users on 5/13. 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 Porter Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ter 6/910:05 pm
YUL
-
LGW
Nonstop6h 45m
Porter Airlines
sáb 6/2711:35 am
LGW
-
YUL
Nonstop7h 40m
Porter Airlines
Deal found 5/13$621
This Porter Airlines deal was found by Cheapflights users on 5/14. 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 Porter Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
qua 6/108:35 pm
YUL
-
LGW
1 stop30h 20m
Porter Airlines
qua 6/1712:40 pm
LGW
-
YUL
1 stop11h 52m
Porter Airlines
Deal found 5/14$622
This Porter Airlines deal was found by Cheapflights users on 5/13. 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 Porter Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
qui 6/44:15 pm
YUL
-
LGW
1 stop13h 30m
Porter Airlines
qua 6/109:40 am
LGW
-
YUL
1 stop12h 22m
Porter Airlines
Deal found 5/13$623
This Air Transat deal was found by Cheapflights users on 5/14. 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 Transat is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
qui 7/210:05 pm
YUL
-
LGW
Nonstop6h 45m
Air Transat
sex 7/312:40 pm
LGW
-
YUL
1 stop11h 50m
Air Transat
Deal found 5/14$625
This Porter Airlines deal was found by Cheapflights users on 5/13. 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 Porter Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
seg 6/153:10 pm
YUL
-
LGW
1 stop11h 45m
Porter Airlines
dom 6/2112:40 pm
LGW
-
YUL
1 stop16h 57m
Porter Airlines
Deal found 5/13$626
This FlightHub deal was found by Cheapflights users on 5/13. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sex 7/38:35 pm
YUL
-
LGW
1 stop9h 10m
Air Transat
dom 7/511:35 am
LGW
-
YUL
Nonstop7h 40m
Air Transat
Deal found 5/13$627
This Air Transat deal was found by Cheapflights users on 5/17. 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 Transat is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb 8/2910:05 pm
YUL
-
LGW
Nonstop6h 45m
Air Transat
seg 9/1411:35 am
LGW
-
YUL
Nonstop7h 40m
Air Transat
Deal found 5/17$629
This Super.com deal was found by Cheapflights users on 5/17. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
qui 5/2110:05 pm
YUL
-
LGW
Nonstop6h 45m
Porter Airlines
sex 5/2911:35 am
LGW
-
YUL
Nonstop7h 40m
Porter Airlines
Deal found 5/17$631
This Porter Airlines deal was found by Cheapflights users on 5/13. 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 Porter Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sex 6/511:00 am
YUL
-
LGW
1 stop18h 45m
Porter Airlines
seg 6/811:35 am
LGW
-
YUL
Nonstop7h 40m
Porter Airlines
Deal found 5/13$633
This Porter Airlines deal was found by Cheapflights users on 5/14. 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 Porter Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sex 5/2210:05 pm
YUL
-
LGW
Nonstop6h 45m
Porter Airlines
qua 6/311:35 am
LGW
-
YUL
Nonstop7h 40m
Porter Airlines
Deal found 5/14$634
This Air Canada deal was found by Cheapflights users on 5/16. 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.
qua 5/209:20 pm
YUL
-
LHR
1 stop18h 40m
Air Canada
qua 5/278:40 am
LHR
-
YUL
1 stop11h 20m
Air Canada
Deal found 5/16$634

Find flight deals from Pierre Elliott Trudeau Intl to London

Discover tips and strategies to find the most affordable flight options for your journey from Pierre Elliott Trudeau Intl (YUL) to London (LON). 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 maio 18, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$620
(Porter Airlines)

One-way from

$341
(Kiwi.com)

Popular in

December

Cheapest in

November

Average price

$647

Good round-trip deal

$609 or less

Good one-way deal

$450 or less
Provider with most accurate pricing for Montreal Pierre Elliott Trudeau Intl-London (LON) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Montreal Pierre Elliott Trudeau Intl-London (LON) flights.
Search Deals
From Montreal Pierre Elliott Trudeau Intl to London (LON)
Search Deals
One-way flight from Montreal Pierre Elliott Trudeau Intl to London (LON)
Search Deals
Highest demand for flights based on searches. 2% potential increase in price ($16 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($22 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 2026
Search Deals
Price to beat on a round-trip flight from Montreal Pierre Elliott Trudeau Intl to London (LON).
Search Deals
Price to beat on a one-way flight from Montreal Pierre Elliott Trudeau Intl to London (LON).
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Pierre Elliott Trudeau Intl 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 2,558,603 searches. Data last updated maio 18, 2026.
Use the filters below to find and compare flights from Montreal Pierre Elliott Trudeau Intl Airport to London that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

MontrealLondon

YUL - LCY

YULLCY

Montreal Pierre Elliott Trudeau Intl

sex 6/5

6:50 pm-11:40 am

1 stop11h 50m

London City

seg 6/15

8:25 am-4:55 pm

1 stop13h 30m

$707

MontrealLondon

YUL - LGW

YULLGW

Montreal Pierre Elliott Trudeau Intl

ter 8/4

10:05 pm-9:50 am

Nonstop6h 45m

London Gatwick

qua 8/19

9:40 am-5:20 pm

1 stop12h 40m

$709

MontrealLondon

YUL - LGW

YULLGW

Montreal Pierre Elliott Trudeau Intl

seg 6/1

10:30 pm-9:25 am

1 stop29h 55m

London Gatwick

sáb 6/6

10:25 am-12:25 am

2 stops19h 00m

$733

MontrealLondon

YUL - LHR

YULLHR

Montreal Pierre Elliott Trudeau Intl

sex 6/19

6:50 pm-10:45 am

1 stop10h 55m

London Heathrow

dom 6/21

2:45 pm-8:05 pm

1 stop10h 20m

$734

MontrealLondon

YUL - LHR

YULLHR

Montreal Pierre Elliott Trudeau Intl

qui 9/24

6:50 pm-10:45 am

1 stop10h 55m

London Heathrow

sex 10/2

9:55 am-4:55 pm

1 stop12h 00m

$735

MontrealLondon

YUL - LCY

YULLCY

Montreal Pierre Elliott Trudeau Intl

qui 5/28

6:50 pm-9:30 am

1 stop9h 40m

London City

qui 6/4

9:20 am-4:55 pm

1 stop12h 35m

$746

MontrealLondon

YUL - LHR

YULLHR

Montreal Pierre Elliott Trudeau Intl

sex 6/19

6:50 pm-10:45 am

1 stop10h 55m

London Heathrow

dom 6/21

2:45 pm-8:05 pm

1 stop10h 20m

$768
Quickest round-trip

MontrealLondon

YUL - LHR

YULLHR

Montreal Pierre Elliott Trudeau Intl

sex 6/19

10:00 pm-9:40 am

Nonstop6h 40m

London Heathrow

dom 6/28

6:05 pm-8:15 pm

Nonstop7h 10m

$778

MontrealLondon

YUL - LHR

YULLHR

Montreal Pierre Elliott Trudeau Intl

qui 6/18

10:00 pm-9:40 am

Nonstop6h 40m

London Heathrow

dom 6/28

6:05 pm-8:15 pm

Nonstop7h 10m

$778

MontrealLondon

YUL - LGW

YULLGW

Montreal Pierre Elliott Trudeau Intl

qua 11/11

8:10 pm-9:15 pm

1 stop20h 05m

London Gatwick

qui 11/26

6:10 pm-12:40 pm

1 stop23h 30m

$792

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/17

Showing 1-10 of 60 resultsSorted by cheapest first
1
2
3
...
6

Compare providers for flights from Pierre Elliott Trudeau Intl to London

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Pierre Elliott Trudeau Intl to London in May.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars
MytripPrice Accuracy3 starsTrust Score*3 stars
OneTravelPrice Accuracy2 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy2 starsTrust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Montreal Pierre Elliott Trudeau Intl Airport-London flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Montreal Pierre Elliott Trudeau Intl Airport-London flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Montreal Pierre Elliott Trudeau Intl Airport-London flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Montreal Pierre Elliott Trudeau Intl Airport-London flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Montreal Pierre Elliott Trudeau Intl Airport-London flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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

Have a flexible travel schedule? Discover the best time to fly to London 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

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

The price you pay for your flight from Montreal Pierre Elliott Trudeau Intl Airport to London may vary depending on when you book. For the best chance of a lower fare, look to book 90 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, December is the cheapest month in which you can book a flight from Montreal Pierre Elliott Trudeau Intl Airport to London (average of $344). Flying from Montreal Pierre Elliott Trudeau Intl Airport to London in April is currently the most expensive (average of $1,109). 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 LON?

Find hourly flight availability from Pierre Elliott Trudeau Intl to London. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated maio 18, 2026.

When flying from Montreal Pierre Elliott Trudeau Intl Airport to London, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Weekly flight availability from Montreal Pierre Elliott Trudeau Intl Airport to London

Explore weekly flight availability from Pierre Elliott Trudeau Intl to London. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated maio 18, 2026.

The most flights from YUL to LON are scheduled on a Friday (20 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (9 on average).

How much does it cost to fly round-trip from Montreal Pierre Elliott Trudeau Intl Airport to London?

What’s the top layover airport for flights from Montreal Pierre Elliott Trudeau Intl Airport to London?

Share of 1-stop round-trip flights from Montreal Pierre Elliott Trudeau Intl Airport to London chosen by Cheapflights users in the past 12 months, using the same layover each way.

Lisbon (LIS) – chosen by Cheapflights users on 40% of 1-stop itineraries from Montreal Pierre Elliott Trudeau Intl Airport to London on Cheapflights.

What’s the cheapest layover airport for flights from Montreal Pierre Elliott Trudeau Intl Airport to London?

Average round-trip fare for 1-stop flights from Montreal Pierre Elliott Trudeau Intl Airport to London, chosen by Cheapflights users in the past 12 months, with the same layover each way.

Zurich (ZRH) is the most affordable 1-stop option, with an average round-trip price of $762.

What’s the fastest layover option from Montreal Pierre Elliott Trudeau Intl Airport to London?

Shortest average travel time for 1-stop one-way flights from Montreal Pierre Elliott Trudeau Intl Airport to London, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.

Flights via Amsterdam (AMS) have the shortest average one-way travel time for 1-stop routes: 9h 00m.

Which airport typically offers the quickest layover for flights from Montreal Pierre Elliott Trudeau Intl Airport to London?

Average layover duration for 1-stop one-way flights from Montreal Pierre Elliott Trudeau Intl Airport to London, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Flights via Zurich (ZRH) offer the fastest connection on this route, with an average layover time of 0h 55m.

How often are flights from Montreal to London delayed?

About 19% of weekly flights between Montreal and London have experienced delays in the past year, with the average delay time being 154 minutes.

What is the most punctual flight time for Montreal to London flights?

Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving in the evening tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Thursday tends to have the lowest number of delays on this route, whereas Tuesday has historically faced a higher average of delays compared to other days of the week.

Which airline has the best punctuality record on Montreal to London flights?

Over the last year, Air Transat have had the lowest number of delays on this route, with just 10% of flights being delayed.

The best insider tips for Montreal Pierre Elliott Trudeau Intl Airport to London flights

AI-powered summary based on content written by travel experts. AI can make mistakes.
Cheapflights partnered with top experts to bring you the best recommendations for your Montreal Pierre Elliott Trudeau Intl Airport to London trip
Our travel experts
Jessica Macdonald

Jessica Macdonald

Expert on Air Canada

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 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

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

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

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 maio 18, 2026.
Peruse reviews from past customers who have flown with Porter Airlines,Air Transat, andAir Canada from Montreal Pierre Elliott Trudeau Intl Airport to London to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Porter Airlines
8.0
Very good
439 reviews

Food

7.6

Comfort

8.0

Boarding

8.2

Entertainment

7.0

Overall

8.0

Crew

8.6

Reviews

1 / 20
10.0
Excellent

John,Mar 2026

YYZ - PVR

I'm 6ft 4in. The seats don't have enough room. But was a good flight.
Porter Airlines
8.0
Very good
439 reviews
Porter Airlines
8.0
Very good
439 reviews

Food

7.6

Comfort

8.0

Boarding

8.2

Entertainment

7.0

Overall

8.0

Crew

8.6

Reviews

1 / 20
10.0
Excellent

John,Mar 2026

YYZ - PVR

I'm 6ft 4in. The seats don't have enough room. But was a good flight.
Air Transat
7.8
Good
552 reviews
Porter Airlines
8.0
Very good
439 reviews

Food

7.6

Comfort

8.0

Boarding

8.2

Entertainment

7.0

Overall

8.0

Crew

8.6

Reviews

1 / 20
10.0
Excellent

John,Mar 2026

YYZ - PVR

I'm 6ft 4in. The seats don't have enough room. But was a good flight.
Air Canada
7.1
Good
11,062 reviews
Porter Airlines
8.0
Very good
439 reviews

Food

7.6

Comfort

8.0

Boarding

8.2

Entertainment

7.0

Overall

8.0

Crew

8.6

Reviews

1 / 20
10.0
Excellent

John,Mar 2026

YYZ - PVR

I'm 6ft 4in. The seats don't have enough room. But was a good flight.
Lufthansa
6.8
Okay
8,009 reviews
Porter Airlines
8.0
Very good
439 reviews

Food

7.6

Comfort

8.0

Boarding

8.2

Entertainment

7.0

Overall

8.0

Crew

8.6

Reviews

1 / 20
10.0
Excellent

John,Mar 2026

YYZ - PVR

I'm 6ft 4in. The seats don't have enough room. But was a good flight.
British Airways
6.7
Okay
7,988 reviews
Porter Airlines
8.0
Very good
439 reviews

Food

7.6

Comfort

8.0

Boarding

8.2

Entertainment

7.0

Overall

8.0

Crew

8.6

Reviews

1 / 20
10.0
Excellent

John,Mar 2026

YYZ - PVR

I'm 6ft 4in. The seats don't have enough room. But was a good flight.

Related info for your journey

Find useful and relevant information for your journey from Pierre Elliott Trudeau Intl to London. 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?

    For as low as $620, Porter Airlines can have you in London from Montreal Pierre Elliott Trudeau Intl Airport in 6h 45m. Montreal Pierre Elliott Trudeau Intl Airport and London are separated by a distance of 3258 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 round-trip?

    Cheapflights users have booked flights from Montreal Pierre Elliott Trudeau Intl Airport to London round-trip from $527. Other airlines that can offer you cheap pricing are TAP AIR PORTUGAL, from $531, and Air Canada, from $545. Users have found that Air Transat is 24% cheaper than the other options available to this destination.

  • What are the most popular routes from Montreal Pierre Elliott Trudeau Intl Airport to London?

    While some choose either Montreal Pierre Elliott Trudeau Intl - London City or Montreal Pierre Elliott Trudeau Intl - London Gatwick, Montreal Pierre Elliott Trudeau Intl - London Heathrow is the most popular route from Montreal Pierre Elliott Trudeau Intl Airport to London.

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

    No one likes to see their flight delayed. When booking a flight from Montreal Pierre Elliott Trudeau Intl Airport to London consider choosing United Airlines (85%), American Airlines (83%) or Aer Lingus (83%) as they are the most reliable in getting you off to your destination on time.

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

    On average you can expect to pay $1,200 for a flight from Montreal Pierre Elliott Trudeau Intl Airport to London. The cheapest flight overall is $591 while the most popular route, (Montreal Pierre Elliott Trudeau Intl - London Heathrow) is currently priced at $643.

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

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

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

    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 London.

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

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

    Currently, December is the cheapest month in which you can book a flight from Montreal Pierre Elliott Trudeau Intl Airport to London (average of $344). Flying from Montreal Pierre Elliott Trudeau Intl Airport to London in April is currently the most expensive (average of $1,109). 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?

Book flights to London if you plan to visit one of these locations
Ilford
Hounslow
Winchester
Croydon
Gatwick
Southend-on-Sea
Dorking
Harrow
Eastleigh
Dartford
Dover
Orpington
Watford
Borehamwood
Chipping Norton
Hayes
Kingston upon Thames
Eastbourne
Slough
Sutton

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Pierre Elliott Trudeau Intl to London

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

Top 6 airlines flying from Pierre Elliott Trudeau Intl to London

Discover the top 6 airlines that operate flights from Pierre Elliott Trudeau Intl 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 2,558,603 searches. Data last updated maio 18, 2026.
AirlineCheapestAverageFlexibilityOn-time
Air TransatCheapest$527Average$695FlexibilityNo cancel feeOn-time50%
TAP AIR PORTUGALCheapest$531Average$826FlexibilityNo cancel feeOn-timeN/A
Air CanadaCheapest$545Average$767FlexibilityNo cancel feeOn-time67%
LufthansaCheapest$549Average$789FlexibilityNo cancel feeOn-time76%
British AirwaysCheapest$608Average$866FlexibilityNo cancel feeOn-time70%
American AirlinesCheapest$610Average$833FlexibilityNo cancel feeOn-time71%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.