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Cheap flights from Montreal to London from $263

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 10/16. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Cheap round-trip flights

Air Canada Logo
7:10 pm - 7:10 amYUL-LHR
7h 00mnonstop
Air Canada Logo
9:00 am - 3:10 pmLHR-YUL
11h 10m1 stop
$565Air Canada
Find Deal
Wed, Nov 19 - Mon, Nov 24
Air Canada Logo
7:10 pm - 7:10 amYUL-LHR
7h 00mnonstop
Air Canada Logo
9:00 am - 3:10 pmLHR-YUL
11h 10m1 stop
$566Air Canada
Find Deal
Wed, Nov 19 - Mon, Nov 24
Air Canada Logo
7:10 pm - 7:10 amYUL-LHR
7h 00mnonstop
Air Canada Logo
9:00 am - 3:10 pmLHR-YUL
11h 10m1 stop
$567Air Canada
Find Deal
Wed, Nov 19 - Mon, Nov 24
Lufthansa Logo
6:55 pm - 6:30 amYUL-LHR
6h 35mnonstop
Lufthansa Logo
1:45 pm - 9:00 pmLHR-YUL
12h 15m1 stop
$570Lufthansa
Find Deal
Tue, Oct 14 - Wed, Oct 22
Multiple Airlines Logo
9:55 pm - 9:35 amYUL-LHR
6h 40mnonstop
Multiple Airlines Logo
6:50 am - 12:45 pmLHR-YUL
9h 55m1 stop
$573Multiple Airlines
Find Deal
Tue, Oct 21 - Tue, Oct 28
Multiple Airlines Logo
8:05 pm - 9:00 pmYUL-LHR
19h 55m1 stop
Multiple Airlines Logo
6:50 am - 12:45 pmLHR-YUL
9h 55m1 stop
$574Multiple Airlines
Find Deal
Tue, Oct 21 - Wed, Oct 29
Lufthansa Logo
8:15 pm - 11:50 amYUL-LHR
10h 35m1 stop
Lufthansa Logo
1:45 pm - 9:00 pmLHR-YUL
12h 15m1 stop
$577Lufthansa
Find Deal
Tue, Oct 14 - Wed, Oct 22
British Airways Logo
8:40 pm - 8:30 amYUL-LHR
6h 50mnonstop
British Airways Logo
4:10 pm - 6:45 pmLHR-YUL
7h 35mnonstop
$580British Airways
Find Deal
Wed, Nov 19 - Mon, Nov 24
British Airways Logo
8:40 pm - 8:30 amYUL-LHR
6h 50mnonstop
British Airways Logo
4:10 pm - 6:45 pmLHR-YUL
7h 35mnonstop
$582British Airways
Find Deal
Wed, Nov 19 - Mon, Nov 24
American Airlines Logo
10:10 pm - 9:50 amYUL-LHR
6h 40mnonstop
American Airlines Logo
4:10 pm - 7:45 pmLHR-YUL
7h 35mnonstop
$584American Airlines
Find Deal
Wed, Oct 15 - Wed, Oct 29

United Airlines flights from Montreal to London Heathrow Airport

Our best United Airlines deals on Montreal to London Heathrow Airport flight tickets
United Airlines
Oct 21
YUL3:41 pmMontreal Pierre Elliott Trudeau Intl
12h 39m
1 stop
LHR9:20 amLondon Heathrow
Oct 28
LHR6:50 amLondon Heathrow
32h 48m
2 stops
YUL11:38 amMontreal Pierre Elliott Trudeau Intl
$625
Find similar
United Airlines
Sep 23
YUL3:41 pmMontreal Pierre Elliott Trudeau Intl
13h 59m
2 stops
LHR10:40 amLondon Heathrow
Oct 1
LHR6:50 amLondon Heathrow
15h 10m
2 stops
YUL5:00 pmMontreal Pierre Elliott Trudeau Intl
$626
Find similar
United Airlines
Sep 30
YUL8:30 amMontreal Pierre Elliott Trudeau Intl
17h 45m
2 stops
LHR7:15 amLondon Heathrow
Oct 8
LHR6:50 amLondon Heathrow
17h 55m
2 stops
YUL7:45 pmMontreal Pierre Elliott Trudeau Intl
$628
Find similar

Air Canada flights from Montreal to London Heathrow Airport

Our best Air Canada deals on Montreal to London Heathrow Airport flight tickets
Air Canada
Nov 19
YUL7:10 pmMontreal Pierre Elliott Trudeau Intl
7h 00m
LHR7:10 amLondon Heathrow
Nov 24
LHR9:00 amLondon Heathrow
11h 10m
1 stop
YUL3:10 pmMontreal Pierre Elliott Trudeau Intl
$565
Find similar
Air Canada
Nov 19
YUL7:10 pmMontreal Pierre Elliott Trudeau Intl
7h 00m
LHR7:10 amLondon Heathrow
Nov 24
LHR9:00 amLondon Heathrow
11h 10m
1 stop
YUL3:10 pmMontreal Pierre Elliott Trudeau Intl
$566
Find similar
Air Canada
Nov 19
YUL7:10 pmMontreal Pierre Elliott Trudeau Intl
7h 00m
LHR7:10 amLondon Heathrow
Nov 24
LHR9:00 amLondon Heathrow
11h 10m
1 stop
YUL3:10 pmMontreal Pierre Elliott Trudeau Intl
$567
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Montreal to London Heathrow Airport 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, momondo users made 832,500 searches. Data last updated September 17, 2025.
Use the filters below to find and compare flights from Montreal 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

Wed 11/19

7:10 pm-7:10 am

Nonstop7h 00m

London Heathrow

Mon 11/24

9:00 am-3:10 pm

1 stop11h 10m

$565

MontrealLondon

YUL - LHR

YULLHR

Montreal Pierre Elliott Trudeau Intl

Wed 11/19

7:10 pm-7:10 am

Nonstop7h 00m

London Heathrow

Mon 11/24

9:00 am-3:10 pm

1 stop11h 10m

$566

MontrealLondon

YUL - LHR

YULLHR

Montreal Pierre Elliott Trudeau Intl

Wed 11/19

7:10 pm-7:10 am

Nonstop7h 00m

London Heathrow

Mon 11/24

9:00 am-3:10 pm

1 stop11h 10m

$567

MontrealLondon

YUL - LHR

YULLHR

Montreal Pierre Elliott Trudeau Intl

Tue 10/14

6:55 pm-6:30 am

Nonstop6h 35m

London Heathrow

Wed 10/22

1:45 pm-9:00 pm

1 stop12h 15m

$570

MontrealLondon

YUL - LHR

YULLHR

Montreal Pierre Elliott Trudeau Intl

Tue 10/21

9:55 pm-9:35 am

Nonstop6h 40m

London Heathrow

Tue 10/28

6:50 am-12:45 pm

1 stop9h 55m

$573

MontrealLondon

YUL - LHR

YULLHR

Montreal Pierre Elliott Trudeau Intl

Tue 10/21

8:05 pm-9:00 pm

1 stop19h 55m

London Heathrow

Wed 10/29

6:50 am-12:45 pm

1 stop9h 55m

$574

MontrealLondon

YUL - LHR

YULLHR

Montreal Pierre Elliott Trudeau Intl

Tue 10/14

8:15 pm-11:50 am

1 stop10h 35m

London Heathrow

Wed 10/22

1:45 pm-9:00 pm

1 stop12h 15m

$577

MontrealLondon

YUL - LHR

YULLHR

Montreal Pierre Elliott Trudeau Intl

Wed 11/19

8:40 pm-8:30 am

Nonstop6h 50m

London Heathrow

Mon 11/24

4:10 pm-6:45 pm

Nonstop7h 35m

$580

MontrealLondon

YUL - LHR

YULLHR

Montreal Pierre Elliott Trudeau Intl

Wed 11/19

8:40 pm-8:30 am

Nonstop6h 50m

London Heathrow

Mon 11/24

4:10 pm-6:45 pm

Nonstop7h 35m

$582

MontrealLondon

YUL - LHR

YULLHR

Montreal Pierre Elliott Trudeau Intl

Wed 10/15

10:10 pm-9:50 am

Nonstop6h 40m

London Heathrow

Wed 10/29

4:10 pm-7:45 pm

Nonstop7h 35m

$584

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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 May is, on average, the cheapest month to fly to London Heathrow Airport from Montreal, with most prices found around $668. If you’re not able to fly to London Heathrow Airport in May, then November is your next best option. Flight prices from Montreal to London Heathrow Airport during November average around $671.

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

Our data shows that Sunday is the least expensive day to fly to London Heathrow Airport. Tickets to fly out on this day can be as low as $795. The most expensive day to fly to London Heathrow Airport is Friday, with ticket prices averaging around $901.

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 $864.

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 $741 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 $682 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 51% 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 September 2025, prices for Montreal to London Heathrow Airport flights are approximately 46% more expensive 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

$694

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 $694. The best round-trip flight deal from Montreal to London Heathrow Airport found on momondo in the last 72 hours is $588.
The fastest flight from Montreal to London Heathrow Airport takes 6h 35m
Direct flights go from Montreal to London Heathrow Airport every day.
Search flight deals

  • 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 $543Free CancellationRating
7.1
10,000 reviews
Search Air Canada flights
LufthansaPriceFrom $545Free CancellationRating
6.8
7,409 reviews
Search Lufthansa flights
American AirlinesPriceFrom $582Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
British AirwaysPriceFrom $588Free CancellationRating
6.7
7,367 reviews
Search British Airways flights

  • American Airlines Flights From Montreal to London Heathrow Airport

    Across 3 American Airlines flights from Montreal to London Heathrow Airport this week, the average price was $837, with the best American Airlines deals starting from $582 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 $543 round-trip, depending on your selected dates, with average Air Canada deals seen on momondo around $730. Air Canada operates 12 flights to London Heathrow Airport from Montreal in an average week. Users have rated it 7.1/10 across 10,000 reviews.

Traveling to a place near London?

Book flights to London if you plan to visit one of these locations
Gatwick
Hounslow
Dover
Luton
Slough
Milton Keynes
Hayes
Guildford
Dartford
Crawley
Stansted
Chelmsford
Salisbury
Brentwood
Ilford
Folkestone
Colchester
Swindon
Stratford-upon-Avon
Watford

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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