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

Flights via Ottawa (YOW) 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 Heathrow Airport?

Flights via Newark (EWR) offer the fastest connection on this route, with an average layover time of 1h 20m.

In terms of precipitation, rainfall in London Heathrow Airport ranges from 40.0 - 70.0 mm per month. January is typically the wettest month, when rainfall can reach 70.0 mm. July is typically the driest time to visit London Heathrow Airport when rainfall is around 40.0 mm.

If weather is an important factor for your trip to London Heathrow Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 4.0 C).

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

Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Montreal Pierre Elliott Trudeau Intl Airport to London Heathrow Airport on time: American Airlines (70%), Aer Lingus (70%), Finnair (70%).

What are the most popular airlines that fly from Montreal Pierre Elliott Trudeau Intl Airport to London Heathrow Airport?

Consider American Airlines, Air Canada or Air France when booking your flight. These represent the most popular airlines when flying from Montreal Pierre Elliott Trudeau Intl Airport to London Heathrow Airport.

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.

C$ 363+ Flights from Montreal Pierre Elliott Trudeau Intl Airport to London Heathrow Airport

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

Paris (CDG) – chosen by Cheapflights users on 49% of one-stop itineraries from Montreal Pierre Elliott Trudeau Intl Airport to London Heathrow Airport on Cheapflights.

Q: How much does it cost to fly round-trip 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 C$ 862 and C$ 1,111 in October. The cheapest round-trip price found within the last 3 days was C$ 739 on Air Canada (29 Oct-5 Nov).

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

Lisbon (LIS) is the most affordable 1-stop option, with an average round-trip price of C$ 781.

Cheapflights Tip: The best prices from Montreal Pierre Elliott Trudeau Intl to London Heathrow are usually found in May or October, booked 66 days in advance, depart on a Sunday or Friday and return on a Saturday

Cheap flight deals from Pierre Elliott Trudeau Intl to Heathrow

Round-trip from	C$ 739
One-way from	C$ 363
Popular in	December
Cheapest in	May
Average price	C$ 990
Good round-trip deal	C$ 788 or less
Good one-way deal	C$ 993 or less

Air Canada
29/10-5/11
2 total stops
19h 50m total
Montreal to London

Search Deals

TAP AIR PORTUGAL
24/10
1 total stop
19h 10m total
Montreal to London

Search Deals

Highest demand for flights based on searches. 3% potential increase in price (C$ 53 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease (C$ 33 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in September 2025

Search Deals

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 15 September 2025.

Wed 29/107:55 a.m.YUL - LHR

1 stop8h 40mAir Canada

Wed 5/119:00 a.m.LHR - YUL

1 stop11h 10mAir Canada

Deal found 14/9C$ 739

Wed 19/119:45 p.m.YUL - LHR

1 stop14h 45mTAP AIR PORTUGAL

Tue 9/126:30 p.m.LHR - YUL

1 stop30h 45mTAP AIR PORTUGAL

Deal found 13/9C$ 743

Tue 28/107:55 a.m.YUL - LHR

1 stop8h 40mAir Canada

Tue 4/116:50 a.m.LHR - YUL

1 stop9h 55mAir Canada

Deal found 13/9C$ 760

Mon 6/109:40 a.m.YUL - LHR

1 stop15h 50mAir Canada

Tue 14/106:50 a.m.LHR - YUL

1 stop9h 45mAir Canada

Deal found 14/9C$ 763

Mon 13/108:05 p.m.YUL - LHR

1 stop19h 55mMultiple Airlines

Mon 20/107:30 p.m.LHR - YUL

1 stop23h 20mMultiple Airlines

Deal found 14/9C$ 772

Wed 1/106:55 p.m.YUL - LHR

Nonstop6h 35mMultiple Airlines

Wed 8/106:50 a.m.LHR - YUL

1 stop9h 45mMultiple Airlines

Deal found 14/9C$ 774

Best flights from Pierre Elliott Trudeau Intl to Heathrow
Discover carefully curated flight deals from Pierre Elliott Trudeau Intl to Heathrow that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 15 September 2025.

Tue 28/108:10 p.m.YUL - LHR

Nonstop7h 00mLufthansa

Wed 5/117:40 a.m.LHR - YUL

1 stop15h 40mLufthansa

Deal found 12/9C$ 786

Mon 29/910:10 p.m.YUL - LHR

Nonstop6h 40mBritish Airways

Sat 6/124:10 p.m.LHR - YUL

Nonstop7h 35mBritish Airways

Deal found 11/9C$ 840

Tue 30/98:30 a.m.YUL - LHR

2 stops16h 25mUnited Airlines

Tue 2/126:50 a.m.LHR - YUL

2 stops17h 58mUnited Airlines

Deal found 11/9C$ 864

Sun 28/95:00 p.m.YUL - LHR

1 stop15h 45mDelta

Fri 5/126:30 a.m.LHR - YUL

1 stop15h 50mDelta

Deal found 11/9C$ 905

Sat 6/127:30 p.m.YUL - LHR

Nonstop6h 40mLufthansa

Wed 10/127:40 a.m.LHR - YUL

1 stop15h 40mLufthansa

Deal found 11/9C$ 836

Wed 29/103:00 p.m.YUL - LHR

2 stops15h 50mUnited Airlines

Wed 5/114:20 p.m.LHR - YUL

2 stops20h 12mUnited Airlines

Deal found 14/9C$ 879

Sat 27/910:05 p.m.YUL - LHR

Nonstop6h 40mBritish Airways

Mon 1/124:10 p.m.LHR - YUL

Nonstop7h 35mBritish Airways

Deal found 11/9C$ 890

Wed 15/103:41 p.m.YUL - LHR

1 stop10h 34mUnited Airlines

Tue 28/108:00 a.m.LHR - YUL

2 stops14h 25mUnited Airlines

Deal found 13/9C$ 879

Sat 27/910:05 p.m.YUL - LHR

Nonstop6h 40mBritish Airways

Tue 2/124:10 p.m.LHR - YUL

Nonstop7h 35mBritish Airways

Deal found 11/9C$ 890

Wed 3/123:00 p.m.YUL - LHR

1 stop13h 10mUnited Airlines

Sun 7/1211:05 a.m.LHR - YUL

2 stops57h 11mUnited Airlines

Deal found 12/9C$ 882

Wed 5/119:25 a.m.YUL - LHR

1 stop15h 30mUnited Airlines

Sun 23/1111:05 a.m.LHR - YUL

2 stops37h 43mUnited Airlines

Deal found 11/9C$ 882

Tue 25/117:00 p.m.YUL - LHR

2 stops20h 35mUnited Airlines

Sun 30/1111:05 a.m.LHR - YUL

2 stops53h 33mUnited Airlines

Deal found 12/9C$ 883

Direct flights from Pierre Elliott Trudeau Intl to Heathrow
Explore direct flight options from Pierre Elliott Trudeau Intl to Heathrow based on user searches, and compare prices and availability for your desired travel dates. Data last updated 15 September 2025.

Tue 28/108:10 p.m.YUL - LHR

Nonstop7h 00mAir Canada

Tue 4/111:25 p.m.LHR - YUL

Nonstop7h 45mAir Canada

Deal found 13/9C$ 783

Tue 28/108:10 p.m.YUL - LHR

Nonstop7h 00mMultiple Airlines

Tue 4/111:25 p.m.LHR - YUL

Nonstop7h 45mMultiple Airlines

Deal found 13/9C$ 785

Wed 29/108:10 p.m.YUL - LHR

Nonstop7h 00mAir Canada

Wed 5/111:25 p.m.LHR - YUL

Nonstop7h 45mAir Canada

Deal found 14/9C$ 786

Mon 6/109:55 p.m.YUL - LHR

Nonstop6h 40mAir Canada

Tue 14/109:30 a.m.LHR - YUL

Nonstop7h 10mAir Canada

Deal found 14/9C$ 788

Wed 1/109:55 p.m.YUL - LHR

Nonstop6h 40mMultiple Airlines

Wed 8/109:30 a.m.LHR - YUL

Nonstop7h 10mMultiple Airlines

Deal found 14/9C$ 801

Wed 15/1010:10 p.m.YUL - LHR

Nonstop6h 40mBritish Airways

Wed 29/104:10 p.m.LHR - YUL

Nonstop7h 35mBritish Airways

Deal found 13/9C$ 803

Wed 8/106:55 p.m.YUL - LHR

Nonstop6h 35mAir Canada

Tue 14/102:05 p.m.LHR - YUL

Nonstop7h 10mAir Canada

Deal found 13/9C$ 804

Wed 14/17:30 p.m.YUL - LHR

Nonstop6h 40mAir Canada

Wed 21/11:25 p.m.LHR - YUL

Nonstop7h 25mAir Canada

Deal found 14/9C$ 806

Tue 7/106:55 p.m.YUL - LHR

Nonstop6h 35mAir Canada

Wed 15/109:30 a.m.LHR - YUL

Nonstop7h 10mAir Canada

Deal found 13/9C$ 808

Wed 12/118:40 p.m.YUL - LHR

Nonstop6h 50mAmerican Airlines

Tue 18/114:10 p.m.LHR - YUL

Nonstop7h 35mAmerican Airlines

Deal found 13/9C$ 810

Tue 24/28:40 p.m.YUL - LHR

Nonstop6h 50mMultiple Airlines

Fri 13/34:10 p.m.LHR - YUL

Nonstop7h 35mMultiple Airlines

Deal found 14/9C$ 811

Last-minute flights from Pierre Elliott Trudeau Intl to Heathrow
Discover last-minute flight deals from Pierre Elliott Trudeau Intl to Heathrow. Data last updated 15 September 2025 and is based on user searches.

Wed 1/106:55 p.m.YUL - LHR

Nonstop6h 35mMultiple Airlines

Wed 8/106:50 a.m.LHR - YUL

1 stop9h 45mMultiple Airlines

Deal found 14/9C$ 774

Mon 6/109:40 a.m.YUL - LHR

1 stop15h 50mAir Canada

Tue 14/106:50 a.m.LHR - YUL

1 stop9h 45mAir Canada

Deal found 14/9C$ 763

Mon 13/101:40 p.m.YUL - LHR

1 stop26h 20mMultiple Airlines

Mon 20/107:30 p.m.LHR - YUL

1 stop23h 20mMultiple Airlines

Deal found 14/9C$ 772

Tue 28/107:55 a.m.YUL - LHR

1 stop8h 40mAir Canada

Tue 4/116:50 a.m.LHR - YUL

1 stop9h 55mAir Canada

Deal found 13/9C$ 760

Wed 29/107:55 a.m.YUL - LHR

1 stop8h 40mAir Canada

Wed 5/119:00 a.m.LHR - YUL

1 stop11h 10mAir Canada

Deal found 14/9C$ 739

One-way flights from Pierre Elliott Trudeau Intl to Heathrow
Search for one-way flight options from Pierre Elliott Trudeau Intl to Heathrow. Find affordable one-way fares based on user searches. Data last updated 15 September 2025.

Fri 24/1010:45 p.m.YUL - LHR

1 stop19h 10mTAP AIR PORTUGAL

Deal found 14/9C$ 363

Mon 5/19:45 p.m.YUL - LHR

1 stop19h 55mTAP AIR PORTUGAL

Deal found 13/9C$ 365

Wed 22/1010:45 p.m.YUL - LHR

1 stop11h 50mTAP AIR PORTUGAL

Deal found 14/9C$ 370

Thu 9/106:00 p.m.YUL - LHR

2 stops21h 20mMultiple Airlines

Deal found 14/9C$ 371

Sun 19/1010:45 p.m.YUL - LHR

1 stop14h 00mTAP AIR PORTUGAL

Deal found 14/9C$ 372

Sun 12/1010:45 p.m.YUL - LHR

1 stop19h 10mTAP AIR PORTUGAL

Deal found 14/9C$ 375

Mon 1/126:45 a.m.YUL - LHR

2 stops49h 05mMultiple Airlines

Deal found 14/9C$ 386

Fri 3/108:15 p.m.YUL - LHR

2 stops19h 05mMultiple Airlines

Deal found 14/9C$ 389

Mon 22/910:45 p.m.YUL - LHR

1 stop18h 15mTAP AIR PORTUGAL

Deal found 13/9C$ 393

Wed 24/910:45 p.m.YUL - LHR

1 stop18h 15mTAP AIR PORTUGAL

Deal found 13/9C$ 394

Sun 30/119:45 p.m.YUL - LHR

1 stop18h 50mTAP AIR PORTUGAL

Deal found 14/9C$ 400

Cheapflights Fare Finder

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

MontrealLondon

YUL - LHR

YULLHR

Montreal Pierre Elliott Trudeau Intl

Tue 28/10

8:10 p.m.-7:10 a.m.

Nonstop7h 00m

London Heathrow

Wed 5/11

7:40 a.m.-6:20 p.m.

1 stop15h 40m

C$ 786

MontrealLondon

YUL - LHR

YULLHR

Montreal Pierre Elliott Trudeau Intl

Sat 6/12

7:30 p.m.-7:10 a.m.

Nonstop6h 40m

London Heathrow

Wed 10/12

7:40 a.m.-6:20 p.m.

1 stop15h 40m

C$ 836

MontrealLondon

YUL - LHR

YULLHR

Montreal Pierre Elliott Trudeau Intl

Mon 29/9

10:10 p.m.-9:50 a.m.

Nonstop6h 40m

London Heathrow

Sat 6/12

4:10 p.m.-6:45 p.m.

Nonstop7h 35m

C$ 840

MontrealLondon

YUL - LHR

YULLHR

Montreal Pierre Elliott Trudeau Intl

Tue 30/9

8:30 a.m.-5:55 a.m.

2 stops16h 25m

London Heathrow

Tue 2/12

6:50 a.m.-7:48 p.m.

2 stops17h 58m

C$ 864

MontrealLondon

YUL - LHR

YULLHR

Montreal Pierre Elliott Trudeau Intl

Wed 29/10

3:00 p.m.-10:50 a.m.

2 stops15h 50m

London Heathrow

Wed 5/11

4:20 p.m.-7:32 a.m.

2 stops20h 12m

C$ 879

MontrealLondon

YUL - LHR

YULLHR

Montreal Pierre Elliott Trudeau Intl

Wed 15/10

3:41 p.m.-7:15 a.m.

1 stop10h 34m

London Heathrow

Tue 28/10

8:00 a.m.-6:25 p.m.

2 stops14h 25m

C$ 879

MontrealLondon

YUL - LHR

YULLHR

Montreal Pierre Elliott Trudeau Intl

Wed 3/12

3:00 p.m.-9:10 a.m.

1 stop13h 10m

London Heathrow

Sun 7/12

11:05 a.m.-3:16 p.m.

2 stops57h 11m

C$ 882

MontrealLondon

YUL - LHR

YULLHR

Montreal Pierre Elliott Trudeau Intl

Wed 5/11

9:25 a.m.-5:55 a.m.

1 stop15h 30m

London Heathrow

Sun 23/11

11:05 a.m.-7:48 p.m.

2 stops37h 43m

C$ 882

MontrealLondon

YUL - LHR

YULLHR

Montreal Pierre Elliott Trudeau Intl

Tue 25/11

7:00 p.m.-8:35 p.m.

2 stops20h 35m

London Heathrow

Sun 30/11

11:05 a.m.-11:38 a.m.

2 stops53h 33m

C$ 883

MontrealLondon

YUL - LHR

YULLHR

Montreal Pierre Elliott Trudeau Intl

Sat 27/9

10:05 p.m.-9:45 a.m.

Nonstop6h 40m

London Heathrow

Mon 1/12

4:10 p.m.-6:45 p.m.

Nonstop7h 35m

C$ 890

Flights are sorted by cheapest round-trip flights first.

Deals found on 13/9

Showing 1-10 of 23 results

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

Prices

Airlines

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

To ensure you get the cheapest price possible for a flight from Montreal Pierre Elliott Trudeau Intl Airport to London Heathrow Airport, you should look to book at least 66 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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

Currently, January is the cheapest month in which you can book a flight from Montreal Pierre Elliott Trudeau Intl Airport to London Heathrow Airport (average of C$ 560). Flying from Montreal Pierre Elliott Trudeau Intl Airport to London Heathrow Airport in July is currently the most expensive (average of C$ 856). 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?

A simple way to save on the total cost of your ticket is to fly from Montreal Pierre Elliott Trudeau Intl Airport to London Heathrow Airport in the morning. If you’re flexible enough to do this you can expect to save up to 29% on your trip compared to booking a flight in the evening.

What is the cheapest day to fly from Montreal Pierre Elliott Trudeau Intl Airport to London Heathrow Airport?

Travelers seeking maximum savings on their Montreal Pierre Elliott Trudeau Intl Airport to London Heathrow Airport flight should consider departing on Sunday mornings when fares are most often at their lowest. Tuesday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

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

Reviews of airlines servicing Heathrow

Read through reviews of airlines operating flights from Montreal Pierre Elliott Trudeau Intl Airport to London Heathrow Airport, such as Finnair,American Airlines, andAir Canada. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Finnair

7.6

Good

1,323 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Daniel,May 2025

HEL - ARN

This is a very short flight. The crew was all very friendly and helpful. The plane was clean and nice. By the time you're in the air, you're starting to descend. It's painless.

Finnair

7.6

Good

1,323 reviews

Finnair

7.6

Good

1,323 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Daniel,May 2025

HEL - ARN

This is a very short flight. The crew was all very friendly and helpful. The plane was clean and nice. By the time you're in the air, you're starting to descend. It's painless.

American Airlines

7.2

Good

10,000 reviews

Finnair

7.6

Good

1,323 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Daniel,May 2025

HEL - ARN

This is a very short flight. The crew was all very friendly and helpful. The plane was clean and nice. By the time you're in the air, you're starting to descend. It's painless.

Air Canada

7.1

Good

10,000 reviews

Finnair

7.6

Good

1,323 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Daniel,May 2025

HEL - ARN

This is a very short flight. The crew was all very friendly and helpful. The plane was clean and nice. By the time you're in the air, you're starting to descend. It's painless.

Lufthansa

6.8

Okay

7,409 reviews

Finnair

7.6

Good

1,323 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Daniel,May 2025

HEL - ARN

This is a very short flight. The crew was all very friendly and helpful. The plane was clean and nice. By the time you're in the air, you're starting to descend. It's painless.

British Airways

6.7

Okay

7,361 reviews

Finnair

7.6

Good

1,323 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Daniel,May 2025

HEL - ARN

This is a very short flight. The crew was all very friendly and helpful. The plane was clean and nice. By the time you're in the air, you're starting to descend. It's painless.

Related info for your journey

How long is the flight from Montreal Pierre Elliott Trudeau Intl Airport to London Heathrow Airport?
Airlines like Lufthansa, British Airways, and United Airlines fly from Montreal Pierre Elliott Trudeau Intl Airport to London Heathrow Airport in about 6h 40m. The time it takes to get you to your destination can typically vary by up to 9h 45m. Airlines will cover a distance of 5213 km. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.
What are the cheapest airlines flying from Montreal Pierre Elliott Trudeau Intl Airport to London Heathrow Airport round-trip?
Currently priced at C$ 610, Air France will fly you from Montreal Pierre Elliott Trudeau Intl Airport to London Heathrow Airport and back. In addition to Air France, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from TAP AIR PORTUGAL and Air Transat - these airlines can fly you to your destination from C$ 632 and C$ 634, respectively. Air France is currently priced 40% below the average price you’ll pay for this route.
What are the most reliable airlines from Montreal Pierre Elliott Trudeau Intl Airport to London Heathrow Airport?
Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Montreal Pierre Elliott Trudeau Intl Airport to London Heathrow Airport 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?
Looking for the cheapest flight from Montreal Pierre Elliott Trudeau Intl Airport to London Heathrow Airport? While on average our users pay C$ 2,251, our data indicates the cheapest price to be C$ 399. The most popular route (Montreal Pierre Elliott Trudeau Intl - London Heathrow), is priced around C$ 671.
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, January is the cheapest month in which you can book a flight from Montreal Pierre Elliott Trudeau Intl Airport to London Heathrow Airport (average of C$ 560). Flying from Montreal Pierre Elliott Trudeau Intl Airport to London Heathrow Airport in July is currently the most expensive (average of C$ 856). 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

Brentford

Sutton

Hounslow

Slough

Marlow

Leamington Spa

Milton Keynes

Romford

Watford

Bedford

Luton

Southall

Browse thousands of different options on Cheapflights for your next trip

Top 10 airlines flying from Pierre Elliott Trudeau Intl to Heathrow

Airline	Cheapest	Average	Flexibility	On-time
Air France	CheapestC$ 610	AverageC$ 960	FlexibilityNo cancel fee	On-time77%	Search Air France flights
TAP AIR PORTUGAL	CheapestC$ 632	AverageC$ 714	FlexibilityNo cancel fee	On-timeN/A	Search TAP AIR PORTUGAL flights
Air Transat	CheapestC$ 634	AverageC$ 1,005	FlexibilityNo cancel fee	On-time50%	Search Air Transat flights
Air Canada	CheapestC$ 758	AverageC$ 1,003	FlexibilityNo cancel fee	On-time67%	Search Air Canada flights
Lufthansa	CheapestC$ 761	AverageC$ 1,002	FlexibilityNo cancel fee	On-time76%	Search Lufthansa flights
Virgin Atlantic	CheapestC$ 770	AverageC$ 879	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic flights
British Airways	CheapestC$ 774	AverageC$ 1,060	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
American Airlines	CheapestC$ 793	AverageC$ 1,108	FlexibilityNo cancel fee	On-time71%	Search American Airlines flights
KLM	CheapestC$ 805	AverageC$ 1,037	FlexibilityNo cancel fee	On-time75%	Search KLM flights
Finnair	CheapestC$ 864	AverageC$ 1,031	FlexibilityNo cancel fee	On-time76%	Search Finnair flights

Fly with Cheapflights

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

Cheapflights makes it easy to find Pierre Elliott Trudeau Intl to Heathrow flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

Why should you use Cheapflights to find cheap flight tickets from Pierre Elliott Trudeau Intl to Heathrow?

Cheapflights simply makes it quick and affordable to book flights from Pierre Elliott Trudeau Intl 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 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.

Can Cheapflights notify me if prices for flights from Pierre Elliott Trudeau Intl to Heathrow become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Heathrow from Pierre Elliott Trudeau Intl today and book when prices fit your budget.

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Cheap flights from Montreal Pierre Elliott Trudeau Intl Airport to London Heathrow Airport from C$ 363

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 24/10. Fares are subject to change and may not be available on all flights or dates of travel.

Cheapflights Tip: The best prices from Montreal Pierre Elliott Trudeau Intl to London Heathrow are usually found in May or October, booked 66 days in advance, depart on a Sunday or Friday and return on a Saturday

Cheap flight deals from Pierre Elliott Trudeau Intl to Heathrow

Round-trip from

One-way from

Popular in

Cheapest in

Average price

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Find flight deals from Pierre Elliott Trudeau Intl to Heathrow

Cheapest flights from Pierre Elliott Trudeau Intl to HeathrowExplore 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 15 September 2025.

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 15 September 2025.

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Everything you need to know about your flight from Montreal Pierre Elliott Trudeau Intl Airport to London Heathrow Airport

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Reviews of airlines servicing Heathrow

Read through reviews of airlines operating flights from Montreal Pierre Elliott Trudeau Intl Airport to London Heathrow Airport, such as Finnair,American Airlines, andAir Canada. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

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?

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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 15 September 2025.