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Cheap flights from Montreal to London from $275

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Montreal to London departing on 8/21. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Cheap round-trip flights

TAP AIR PORTUGAL Logo
9:45 pm - 10:40 pmYUL-LHR
19h 55m1 stop
TAP AIR PORTUGAL Logo
8:15 am - 8:15 pmLHR-YUL
17h 00m1 stop
$483TAP AIR PORTUGAL
Find Deal
lun., nov. 10 - vie., nov. 21
TAP AIR PORTUGAL Logo
10:45 pm - 10:55 pmYUL-LHR
19h 10m1 stop
TAP AIR PORTUGAL Logo
7:50 pm - 9:10 pmLHR-YUL
30h 20m1 stop
$492TAP AIR PORTUGAL
Find Deal
jue., sep. 4 - dom., sep. 7
TAP AIR PORTUGAL Logo
9:45 pm - 10:40 pmYUL-LHR
19h 55m1 stop
TAP AIR PORTUGAL Logo
8:15 am - 8:15 pmLHR-YUL
17h 00m1 stop
$500TAP AIR PORTUGAL
Find Deal
lun., nov. 10 - vie., nov. 21
Air Canada Logo
9:55 pm - 9:35 amYUL-LHR
6h 40mnonstop
Air Canada Logo
6:50 am - 11:35 amLHR-YUL
9h 45m1 stop
$544Air Canada
Find Deal
mar., sep. 30 - lun., oct. 6
Air Canada Logo
9:55 pm - 9:35 amYUL-LHR
6h 40mnonstop
Air Canada Logo
6:50 am - 11:35 amLHR-YUL
9h 45m1 stop
$545Air Canada
Find Deal
mié., sep. 17 - mié., oct. 1
Lufthansa Logo
9:55 pm - 9:35 amYUL-LHR
6h 40mnonstop
Lufthansa Logo
9:30 am - 11:40 amLHR-YUL
7h 10mnonstop
$555Lufthansa
Find Deal
mar., sep. 30 - lun., oct. 6
Lufthansa Logo
9:55 pm - 9:35 amYUL-LHR
6h 40mnonstop
Lufthansa Logo
9:30 am - 11:40 amLHR-YUL
7h 10mnonstop
$556Lufthansa
Find Deal
mar., sep. 2 - dom., sep. 14
 Logo
4:30 pm - 10:00 amYUL-LHR
12h 30m1 stop
 Logo
11:05 am - 11:35 amLHR-YUL
29h 30m1 stop
lun., sep. 8 - lun., sep. 15
 Logo
9:55 pm - 9:35 amYUL-LHR
6h 40mnonstop
 Logo
8:55 am - 3:15 pmLHR-YUL
11h 20m1 stop
jue., oct. 16 - lun., nov. 3
British Airways Logo
10:00 pm - 9:40 amYUL-LHR
6h 40mnonstop
British Airways Logo
4:30 pm - 7:05 pmLHR-YUL
7h 35mnonstop
$598British Airways
Find Deal
dom., oct. 19 - dom., nov. 2

TAP AIR PORTUGAL flights from Montreal to London Heathrow Airport

Our best TAP AIR PORTUGAL deals on Montreal to London Heathrow Airport flight tickets
TAP AIR PORTUGAL
Nov 10
YUL9:45 pmMontreal Pierre Elliott Trudeau Intl
19h 55m
1 stop
LHR10:40 pmLondon Heathrow
Nov 21
LHR8:15 amLondon Heathrow
17h 00m
1 stop
YUL8:15 pmMontreal Pierre Elliott Trudeau Intl
TAP AIR PORTUGAL
Sep 4
YUL10:45 pmMontreal Pierre Elliott Trudeau Intl
19h 10m
1 stop
LHR10:55 pmLondon Heathrow
Sep 7
LHR7:50 pmLondon Heathrow
30h 20m
1 stop
YUL9:10 pmMontreal Pierre Elliott Trudeau Intl
TAP AIR PORTUGAL
Nov 10
YUL9:45 pmMontreal Pierre Elliott Trudeau Intl
19h 55m
1 stop
LHR10:40 pmLondon Heathrow
Nov 21
LHR8:15 amLondon Heathrow
17h 00m
1 stop
YUL8:15 pmMontreal Pierre Elliott Trudeau Intl

Austrian Airlines flights from Montreal to London Heathrow Airport

Our best Austrian Airlines deals on Montreal to London Heathrow Airport flight tickets
Austrian Airlines
Sep 8
YUL6:35 pmMontreal Pierre Elliott Trudeau Intl
32h 45m
1 stop
LHR8:20 amLondon Heathrow
Sep 15
LHR7:30 pmLondon Heathrow
23h 20m
1 stop
YUL1:50 pmMontreal Pierre Elliott Trudeau Intl
Austrian Airlines
Oct 7
YUL3:00 pmMontreal Pierre Elliott Trudeau Intl
14h 00m
1 stop
LHR10:00 amLondon Heathrow
Oct 21
LHR10:25 amLondon Heathrow
30h 10m
2 stops
YUL11:35 amMontreal Pierre Elliott Trudeau Intl
Austrian Airlines
Sep 29
YUL1:30 pmMontreal Pierre Elliott Trudeau Intl
15h 30m
1 stop
LHR10:00 amLondon Heathrow
Oct 10
LHR6:00 amLondon Heathrow
33h 35m
2 stops
YUL10:35 amMontreal Pierre Elliott Trudeau Intl

See travel insights to London from

How to get the cheapest flight ticket from Montreal to London Heathrow Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the typical price of a round-trip flight between Montreal and London Heathrow Airport?

What is the cheapest month to fly to London Heathrow Airport?

The month of September is, on average, the cheapest month to fly to London Heathrow Airport from Montreal, with most prices found around $635. If you’re not able to fly to London Heathrow Airport in September, then October is your next best option. Flight prices from Montreal to London Heathrow Airport during October average around $674.

What is the cheapest day to depart on your flight to London Heathrow Airport?

Our data shows that Saturday is the least expensive day to fly to London Heathrow Airport. Tickets to fly out on this day can be as low as $804. The most expensive day to fly to London Heathrow Airport is Friday, with ticket prices averaging around $893.

What is the cheapest time of day to depart on your flight to London Heathrow Airport?

According to our data, the cheapest time of day to fly to London Heathrow Airport is in the morning. momondo users have found flights departing from Montreal to London Heathrow Airport in the morning for as low as $668. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights in the evening are often more expensive with an average ticket price of $865.

What is the cheapest Montreal to London Heathrow flight route?

Fly from Montreal Pierre Elliott Trudeau Intl to London Heathrow for the best Montreal - London Heathrow flight prices

How far in advance should I book a flight to London Heathrow Airport?

You are more likely to see cheaper flights to London Heathrow Airport from Montreal when booking weeks ahead of your departure date. In general, you can expect to find flights to London Heathrow Airport for around $745 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London Heathrow Airport from Montreal for as low as $673 on momondo.

What cabin class options are available on Montreal to London Heathrow flights?

There are 3 cabin classes available to choose from on Montreal to London Heathrow flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Montreal to London Heathrow Airport flights?

You could potentially save up to 24% on your flight if you consider stops on a Montreal to London Heathrow Airport flight.

How have Montreal to London Heathrow Airport flight prices changed over time?

As of July 2025, prices for Montreal to London Heathrow Airport flights are approximately 33% cheaper when compared to flights at the same time last year.

When to book flights from Montreal to London Heathrow Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Montreal to London Heathrow Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Montreal to London Heathrow Airport (YMQ to LHR) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Montreal to London Heathrow Airport

Best Price Found

$275

Fastest flight time

6h 35m

Direct flights

Every day
The best one-way flight to London Heathrow Airport from Montreal in the past 72 hours is $275. The best round-trip flight deal from Montreal to London Heathrow Airport found on momondo in the last 72 hours is $483.
The fastest flight from Montreal to London Heathrow Airport takes 6h 35m
Direct flights go from Montreal to London Heathrow Airport every day.

  • How far is Montreal to London Heathrow by plane?

    London Heathrow is 3229.8 mi away from Montreal. By plane, this route typically takes 6h 35m.

  • When did momondo last update prices for flights from Montreal to London Heathrow Airport?

    Prices for flights from Montreal to London Heathrow Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Montreal to London Heathrow Airport?

  • How old do you have to be to fly from Montreal to London Heathrow Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Montreal to London Heathrow Airport.

  • What documentation or ID do you need to fly to London Heathrow Airport?

    The travel and health documents you'll need for your trip to London Heathrow Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at London Heathrow Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from Montreal to London Heathrow Airport?

  • What is the most popular airline from Montreal to London Heathrow Airport?


Best airlines flying from Montreal to London Heathrow Airport

Compare and see reviews for airlines that fly from Montreal to London Heathrow Airport with momondo
Airline
Rating
Free Cancellation
Price
Air CanadaPriceFrom $558Free CancellationRating
7.1
9,678 reviews
Search Air Canada flights
LufthansaPriceFrom $589Free CancellationRating
6.8
7,207 reviews
Search Lufthansa flights
British AirwaysPriceFrom $632Free CancellationRating
6.6
7,093 reviews
Search British Airways flights
American AirlinesPriceFrom $690Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
  • American Airlines Flights From Montreal to London Heathrow Airport

    Across 5 American Airlines flights from Montreal to London Heathrow Airport this week, the average price was $856, with the best American Airlines deals starting from $690 round-trip. 10,000 users have rated American Airlines on momondo, with an average score of 7.2/10.

  • Air Canada Flights From Montreal to London Heathrow Airport

    Air Canada is also a popular choice for this route. Air Canada flight deals for Montreal to London Heathrow Airport start from as low as $558 round-trip, depending on your selected dates, with average Air Canada deals seen on momondo around $749. Air Canada operates 12 flights to London Heathrow Airport from Montreal in an average week. Users have rated it 7.1/10 across 9,681 reviews.


Traveling to a place near London?

Book flights to London if you plan to visit one of these locations
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Hounslow
Croydon
Luton
Slough
Dover
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Stansted
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Swindon
Ilford
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Stratford-upon-Avon
Chelmsford
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Watford
Richmond

Why use momondo?

Why should I use momondo to find a flight deal from Montreal to London?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Montreal to London for you.

Can I find flights from Montreal to London with flexible booking policies on momondo?

Yes. All flights to London from Montreal on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Montreal to London?

momondo provides multiple filters to help you find the best flight to London from Montreal. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Montreal to London right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Montreal to London flights. All you need is a valid email address and we will do the rest; it is that quick and easy.


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1 adult
mar. 7/8
mar. 7/15

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