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Cheap flights from London Heathrow Airport to Montreal from £282

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 27/6. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — YMQ
6 Jul — 13 Jul1
1 adult
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from London Heathrow to Montreal are usually found in October or November, booked 84 days in advance, depart on a Friday or Monday and return on a Sunday

Cheap flight deals from Heathrow to Montreal

Enter your travel dates to find the best prices.

Cheapest flights from Heathrow to Montreal
Explore the most affordable flight options available from Heathrow to Montreal. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 6 June 2026.

Thu 11/606:15
LHR
-
YUL
2 stops18h 17m
Multiple Airlines
Mon 15/619:10
YUL
-
LHR
2 stops18h 25m
Multiple Airlines
Deal found 2/6£461
Mon 31/814:05
LHR
-
YUL
Nonstop7h 35m
Air Canada
Fri 11/918:40
YUL
-
LHR
Nonstop6h 50m
Air Canada
Deal found 4/6£462
Sun 30/809:30
LHR
-
YUL
Nonstop7h 30m
Lufthansa
Mon 7/922:10
YUL
-
LHR
Nonstop6h 50m
Lufthansa
Deal found 3/6£463
Thu 17/914:05
LHR
-
YUL
Nonstop7h 35m
Lufthansa
Wed 30/918:40
YUL
-
LHR
Nonstop6h 50m
Lufthansa
Deal found 4/6£463
Sat 13/619:30
LHR
-
YUL
1 stop23h 20m
Air Canada
Sun 28/618:40
YUL
-
LHR
Nonstop6h 50m
Air Canada
Deal found 2/6£464
Wed 1/712:40
LHR
-
YUL
2 stops14h 44m
Air Canada
Mon 31/810:40
YUL
-
LHR
1 stop14h 50m
Air Canada
Deal found 6/6£465
Fri 26/607:30
LHR
-
YUL
1 stop13h 30m
Multiple Airlines
Tue 30/621:20
YUL
-
LHR
1 stop30h 15m
Multiple Airlines
Deal found 4/6£466
Sun 30/818:05
LHR
-
YUL
Nonstop7h 10m
British Airways
Thu 10/922:00
YUL
-
LHR
Nonstop6h 40m
British Airways
Deal found 2/6£466
Tue 23/607:30
LHR
-
YUL
1 stop13h 30m
Multiple Airlines
Sun 28/621:20
YUL
-
LHR
1 stop18h 40m
Multiple Airlines
Deal found 2/6£467
Wed 2/920:10
LHR
-
YUL
2 stops42h 36m
British Airways
Sun 13/922:00
YUL
-
LHR
Nonstop6h 40m
British Airways
Deal found 2/6£468
Tue 1/914:05
LHR
-
YUL
Nonstop7h 35m
Lufthansa
Thu 10/920:30
YUL
-
LHR
1 stop10h 20m
Lufthansa
Deal found 2/6£469
Thu 18/606:55
LHR
-
YUL
1 stop16h 55m
Lufthansa
Sun 28/621:20
YUL
-
LHR
1 stop18h 40m
Lufthansa
Deal found 3/6£469

Find flight deals from Heathrow to Montreal

Discover tips and strategies to find the most affordable flight options for your journey from Heathrow (LHR) to Montreal (YMQ). 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 6 June 2026.

Round-trip from

£462

One-way from

£282

Popular in

December

Cheapest in

October

Average price

£493

Good round-trip deal

£563 or less

Good one-way deal

£450 or less
Air Canada
  • Air Canada
  • 31/8-11/9
  • Nonstop
  • 14h 25m total
  • London to Montreal
Search Deals
27/6
  • 27/6
  • 1 total stop
  • 25h 35m total
  • London to Montreal
Search Deals
High demand for flights, 2% potential price rise
Search Deals
Cheapest flight prices on average. 1% potential price decrease (£6 potential savings vs. average return price).
Search Deals
Average for round-trip flights in June 2026
Search Deals
Price to beat on a round-trip flight from London Heathrow to Montreal (YMQ).
Search Deals
Price to beat on a one-way flight from London Heathrow to Montreal (YMQ).
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Heathrow to Montreal 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 858,174 searches. Data last updated 6 June 2026.
Use the filters below to find and compare flights from London Heathrow Airport to Montreal that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonMontreal

LHR - YUL

LHRYUL

London Heathrow

Sat 22/8

07:30-17:24

2 stops14h 54m

Montreal Pierre Elliott Trudeau Intl

Sat 29/8

18:30-06:45

1 stop31h 15m

£482

LondonMontreal

LHR - YUL

LHRYUL

London Heathrow

Wed 2/9

06:50-16:10

2 stops14h 20m

Montreal Pierre Elliott Trudeau Intl

Wed 23/9

15:25-08:20

1 stop11h 55m

£499

LondonMontreal

LHR - YUL

LHRYUL

London Heathrow

Tue 1/9

12:15-11:43

1 stop28h 28m

Montreal Pierre Elliott Trudeau Intl

Tue 8/9

22:00-09:40

Nonstop6h 40m

£514

LondonMontreal

LHR - YUL

LHRYUL

London Heathrow

Sun 5/7

17:50-16:10

2 stops27h 20m

Montreal Pierre Elliott Trudeau Intl

Thu 16/7

08:30-05:55

2 stops16h 25m

£539

LondonMontreal

LHR - YUL

LHRYUL

London Heathrow

Sat 4/7

09:30-21:26

2 stops16h 56m

Montreal Pierre Elliott Trudeau Intl

Tue 7/7

15:25-10:15

2 stops13h 50m

£546

LondonMontreal

LHR - YUL

LHRYUL

London Heathrow

Thu 9/7

06:50-16:10

2 stops14h 20m

Montreal Pierre Elliott Trudeau Intl

Mon 13/7

15:25-10:40

2 stops14h 15m

£559
Fastest return journey

LondonMontreal

LHR - YUL

LHRYUL

London Heathrow

Fri 23/10

08:40-15:00

1 stop11h 20m

Montreal Pierre Elliott Trudeau Intl

Mon 2/11

17:10-13:00

2 stops14h 50m

£565

LondonMontreal

LHR - YUL

LHRYUL

London Heathrow

Wed 1/7

07:45-18:59

2 stops16h 14m

Montreal Pierre Elliott Trudeau Intl

Wed 29/7

15:25-08:20

1 stop11h 55m

£582

LondonMontreal

LHR - YUL

LHRYUL

London Heathrow

Sun 5/7

20:05-15:00

1 stop23h 55m

Montreal Pierre Elliott Trudeau Intl

Thu 16/7

16:40-07:55

1 stop10h 15m

£592

LondonMontreal

LHR - YUL

LHRYUL

London Heathrow

Wed 1/7

07:45-18:59

2 stops16h 14m

Montreal Pierre Elliott Trudeau Intl

Wed 8/7

13:15-07:55

2 stops13h 40m

£619

Flights are sorted by cheapest return flights first.

Deals found on 4/6

Showing 1-10 of 24 resultsSorted by cheapest first
1
2
3

Best time to book a flight from Heathrow to Montreal

Have a flexible travel schedule? Discover the best time to fly to Montreal from Heathrow with our price prediction graph.
Estimated return 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 London Heathrow Airport to Montreal

What is the cheapest month to book a flight from London Heathrow Airport to Montreal?

Currently, September is the cheapest month in which you can book a flight from London Heathrow Airport to Montreal (average of £245). Flying from London Heathrow Airport to Montreal in July is currently the most expensive (average of £914). 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 LHR to YMQ?

Find hourly flight availability from Heathrow to Montreal. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 6 June 2026.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from London Heathrow Airport to Montreal as you normally would.

Weekly flight availability from London Heathrow Airport to Montreal

Explore weekly flight availability from Heathrow to Montreal. 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 6 June 2026.

The most flights from LHR to YMQ are scheduled on a Wednesday (17 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (5 on average).

How much does it cost for a return flight from London Heathrow Airport to Montreal?

What’s the top stopover airport for flights from London Heathrow Airport to Montreal?

Share of one-stop return flights from London Heathrow Airport to Montreal chosen by Cheapflights users in the past 12 months, using the same stopover each way.

Paris (CDG) – chosen by Cheapflights users on 29% of one-stop itineraries from London Heathrow Airport to Montreal on Cheapflights.

What’s the cheapest stopover airport for flights from London Heathrow Airport to Montreal?

Average return fare for one-stop flights from London Heathrow Airport to Montreal, chosen by Cheapflights users in the past 12 months, with the same stopover each way.

Toronto (YYZ) is the most affordable one-stop option, with an average return flight price of £390.

What’s the fastest stopover option from London Heathrow Airport to Montreal?

Shortest average travel time for one-stop one-way flights from London Heathrow Airport to Montreal, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by stopover airport.

Flights via Toronto (YYZ) have the shortest average one-way travel time for one-stop routes: 10h 50m.

Which airport typically offers the quickest stopover for flights from London Heathrow Airport to Montreal?

Average stopover duration for one-stop one-way flights from London Heathrow Airport to Montreal, 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 stopover time of 0h 55m.

How often are flights from London to Montreal delayed?

About 9% of weekly flights between London and Montreal have experienced delays in the past year, with the average delay time being 152 minutes.

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

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

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

Over the past year, Air Canada have had the lowest number of delays on this route, with just 7% of flights being delayed.

How far ahead should I book a flight from London Heathrow Airport to Montreal?

To ensure you get the cheapest price possible for a flight from London Heathrow Airport to Montreal, you should look to book at least 63 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.

Reviews of airlines servicing Montreal

Get insights into the airlines that provide service to Montreal. 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 Montreal. Reviews last updated 6 June 2026.
See what other customers who have flown with TAP AIR PORTUGAL,American Airlines, andAir Canada from London Heathrow Airport to Montreal have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
TAP AIR PORTUGAL
7.2
Good
2,272 reviews
Check prices

Boarding

7.0

Comfort

7.1

Entertainment

6.3

Food

6.2

Overall

7.2

Crew

7.8

Reviews

1 / 20
8.0
Excellent

Anonymous,Sept 2025

MAD - LIS

Like the onboard attendants I don’t like that they change gate at the last minute And neither the way to get to the airplane by bus, I understand is not airline issue
TAP AIR PORTUGAL
7.2
Good
2,272 reviews
TAP AIR PORTUGAL
7.2
Good
2,272 reviews
Check prices

Boarding

7.0

Comfort

7.1

Entertainment

6.3

Food

6.2

Overall

7.2

Crew

7.8

Reviews

1 / 20
8.0
Excellent

Anonymous,Sept 2025

MAD - LIS

Like the onboard attendants I don’t like that they change gate at the last minute And neither the way to get to the airplane by bus, I understand is not airline issue
American Airlines
7.1
Good
11,651 reviews
TAP AIR PORTUGAL
7.2
Good
2,272 reviews
Check prices

Boarding

7.0

Comfort

7.1

Entertainment

6.3

Food

6.2

Overall

7.2

Crew

7.8

Reviews

1 / 20
8.0
Excellent

Anonymous,Sept 2025

MAD - LIS

Like the onboard attendants I don’t like that they change gate at the last minute And neither the way to get to the airplane by bus, I understand is not airline issue
Air Canada
7.1
Good
11,131 reviews
TAP AIR PORTUGAL
7.2
Good
2,272 reviews
Check prices

Boarding

7.0

Comfort

7.1

Entertainment

6.3

Food

6.2

Overall

7.2

Crew

7.8

Reviews

1 / 20
8.0
Excellent

Anonymous,Sept 2025

MAD - LIS

Like the onboard attendants I don’t like that they change gate at the last minute And neither the way to get to the airplane by bus, I understand is not airline issue
Lufthansa
6.8
Okay
8,039 reviews
TAP AIR PORTUGAL
7.2
Good
2,272 reviews
Check prices

Boarding

7.0

Comfort

7.1

Entertainment

6.3

Food

6.2

Overall

7.2

Crew

7.8

Reviews

1 / 20
8.0
Excellent

Anonymous,Sept 2025

MAD - LIS

Like the onboard attendants I don’t like that they change gate at the last minute And neither the way to get to the airplane by bus, I understand is not airline issue
British Airways
6.7
Okay
8,028 reviews
TAP AIR PORTUGAL
7.2
Good
2,272 reviews
Check prices

Boarding

7.0

Comfort

7.1

Entertainment

6.3

Food

6.2

Overall

7.2

Crew

7.8

Reviews

1 / 20
8.0
Excellent

Anonymous,Sept 2025

MAD - LIS

Like the onboard attendants I don’t like that they change gate at the last minute And neither the way to get to the airplane by bus, I understand is not airline issue

Related info for your journey

Find useful and relevant information for your journey from Heathrow to Montreal. 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 London Heathrow Airport to Montreal?

    For as low as £482, United Airlines can have you in Montreal from London Heathrow Airport in 14h 54m. The distance between London Heathrow Airport and Montreal is about 3239 mi. Both multi-stop and direct flights can be found to your destination and back.

  • What are the cheapest airlines flying from London Heathrow Airport to Montreal round-trip?

    According to our current data, Air Transat (£321), Air Canada (£371), and Finnair (£389) offers the cheapest pricing from London Heathrow Airport to Montreal. Air Transat is 37% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the cheapest airlines to fly from London Heathrow Airport to Montreal one-way?

    For one-way options, check prices for British Airways. According to our data, you can fly for as low as £290. Users have also found prices from £295 and £327 on Virgin Atlantic and TAP AIR PORTUGAL, respectively.

  • What are the most reliable airlines from London Heathrow Airport to Montreal?

    No one likes to see their flight delayed. When booking a flight from London Heathrow Airport to Montreal consider choosing Air Canada (96%), United Airlines (96%) or Lufthansa (96%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from London Heathrow Airport to Montreal?

    While on average a flight from London Heathrow Airport to Montreal is generally £900, our data shows the cheapest flight currently is £403. When looking at the most popular route, (London Heathrow - Montreal Pierre Elliott Trudeau Intl), you can expect to pay £378 for that flight.

  • Can I find deals for flights from Heathrow to Montreal that include hotel bookings?

    Yes. In addition to deals on Heathrow to Montreal flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Heathrow to Montreal?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Heathrow to Montreal.

  • Can I find deals for business class flights from Heathrow to Montreal?

    Yes. Cheapflights offers flight deals from Heathrow to Montreal 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 London Heathrow Airport to Montreal?

    Currently, September is the cheapest month in which you can book a flight from London Heathrow Airport to Montreal (average of £245). Flying from London Heathrow Airport to Montreal in July is currently the most expensive (average of £914). 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

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.

Top 6 airlines flying from Heathrow to Montreal

Discover the top 6 airlines that operate flights from Heathrow to Montreal. 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 858,174 searches. Data last updated 6 June 2026.
AirlineCheapestAverageFlexibilityOn-time
Air TransatCheapest£321Average£475FlexibilityNo cancel feeOn-time50%
Search Air Transat flights
Air CanadaCheapest£371Average£546FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
FinnairCheapest£389Average£811FlexibilityNo cancel feeOn-time76%
Search Finnair flights
British AirwaysCheapest£392Average£577FlexibilityNo cancel feeOn-time70%
Search British Airways flights
LufthansaCheapest£415Average£561FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
Virgin AtlanticCheapest£425Average£720FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Heathrow to Montreal?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Heathrow to Montreal. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

Why should you use Cheapflights to find cheap flight tickets from Heathrow to Montreal?

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Heathrow to Montreal for you. Better yet — we are completely free to use.

Can Cheapflights find flights from Heathrow to Montreal with no change fees?

Yes! Cheapflights helps users easily find flights from Heathrow to Montreal with no change fees.

Can Cheapflights notify me if prices for flights from Heathrow to Montreal become cheaper?

Yes! Start tracking prices for Heathrow to Montreal flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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