How long is the flight from London Heathrow Airport to Montreal?

For as low as £363, Air Canada can have you in Montreal from London Heathrow Airport in 9h 55m. 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 France (£95), Virgin Atlantic (£256), and Air Transat (£316) offers the cheapest pricing from London Heathrow Airport to Montreal. Air France is 79% cheaper than the average price of flights available within the next 90 days to this destination.

In terms of precipitation, rainfall in Montreal ranges from 64.0 - 111.0 inches per month. August is typically the wettest month, when rainfall can reach 111.0 mm. February is typically the driest time to visit Montreal when rainfall is around 64.0 mm.

If weather is an important factor for your trip to Montreal, 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 22.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -9.0 C).

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

While on average a flight from London Heathrow Airport to Montreal is generally £1,035, our data shows the cheapest flight currently is £367. When looking at the most popular route, (London Heathrow - Montreal Pierre Elliott Trudeau Intl), you can expect to pay £345 for that flight.

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 (81%), Austrian Airlines (81%) or United Airlines (81%) as they are the most reliable in getting you off to your destination on time.

What are the most popular airlines that fly from London Heathrow Airport to Montreal?

The most popular airlines flying from London Heathrow Airport to Montreal are Air Canada, Air France and Finnair. Something to consider prior to booking your flight.

What is the cheapest day to fly round-trip from London Heathrow Airport to Montreal?

Users have found that leaving on a Tuesday can be a cost-effective option. It’s possible to save up to 7% on your flight compared to booking on days when demand is much higher.

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

To save on the cost of your flight from London Heathrow Airport to Montreal, book at least 57 days before your planned departure. Booking around this time can save you about 35% on the cost of this flight compared to booking a flight leaving this week. We have found prices from £418 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as £497.

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

The best pricing can be found in the month of September. Prices to Montreal from London Heathrow Airport average £451. You can even find prices in September for less than £451, as users have found deals to Montreal from as low as £305. The month of December appears to be one of the more expensive times to travel to Montreal from London Heathrow Airport. Flying in the targeted month can save you up to 26%.

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.

£232+ Cheap Flights from London Heathrow Airport to Montreal

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

Airfare is below average for this route at the moment. London Heathrow Airport to Montreal flights typically cost between £380 and £461 in September. The cheapest return flight price found within the last 3 days was £358 on Air Canada (28 Sept-23 Oct).

Cheapflights Tip: The best prices from London Heathrow to Montreal are usually found in June or September, booked 85 days in advance, depart on a Wednesday or Tuesday and return on a Sunday

Cheap flight deals from Heathrow to Montreal

Round-trip from	£358
One-way from	£232
Popular in	December
Cheapest in	June
Average price	£411
Good round-trip deal	£453 or less
Good one-way deal	£487 or less

Air Canada
28/9-23/10
3 total stops
21h 50m total
London to Montreal

Search Deals

13/11
1 total stop
33h 25m total
London to Montreal

Search Deals

Highest demand for flights based on searches. 3% potential increase in price (£13 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 1% potential price decrease (£7 potential savings vs. average return price).

Search Deals

Average for round-trip flights in September 2025

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

Find flight deals from Heathrow to Montreal

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 16 September 2025.

Mon 22/906:50LHR - YUL

1 stop9h 45mAir Canada

Mon 17/1119:10YUL - LHR

Nonstop7h 00mAir Canada

Deal found 13/9£358

Wed 24/906:00LHR - YUL

1 stop12h 50mAir Canada

Tue 25/1122:30YUL - LHR

2 stops17h 05mAir Canada

Deal found 14/9£358

Thu 30/1006:50LHR - YUL

1 stop9h 55mAir Canada

Wed 5/1116:45YUL - LHR

1 stop10h 20mAir Canada

Deal found 13/9£359

Wed 24/908:40LHR - YUL

1 stop11h 20mAir Canada

Wed 15/1013:25YUL - LHR

2 stops14h 10mAir Canada

Deal found 15/9£360

Tue 23/909:30LHR - YUL

1 stop11h 30mLufthansa

Sun 23/1115:10YUL - LHR

1 stop10h 20mLufthansa

Deal found 14/9£361

Thu 30/1006:50LHR - YUL

1 stop9h 55mMultiple Airlines

Thu 6/1116:45YUL - LHR

1 stop20h 05mMultiple Airlines

Deal found 15/9£361

Wed 24/906:00LHR - YUL

1 stop12h 50mMultiple Airlines

Mon 24/1119:10YUL - LHR

Nonstop7h 00mMultiple Airlines

Deal found 14/9£362

Tue 7/1006:50LHR - YUL

1 stop9h 45mAir Canada

Tue 21/1018:55YUL - LHR

Nonstop6h 35mAir Canada

Deal found 14/9£363

Thu 25/906:50LHR - YUL

1 stop9h 45mMultiple Airlines

Sun 28/921:05YUL - LHR

1 stop18h 55mMultiple Airlines

Deal found 15/9£364

Thu 13/1106:35LHR - YUL

2 stops16h 48mLufthansa

Sun 16/1115:10YUL - LHR

1 stop10h 20mLufthansa

Deal found 15/9£364

Wed 5/1113:45LHR - YUL

1 stop30h 25mAir Canada

Mon 17/1120:10YUL - LHR

2 stops19h 25mAir Canada

Deal found 14/9£365

Mon 27/1017:50LHR - YUL

1 stop22h 55mMultiple Airlines

Sun 9/1116:45YUL - LHR

1 stop13h 30mMultiple Airlines

Deal found 14/9£366

Best flights from Heathrow to Montreal
Discover carefully curated flight deals from Heathrow to Montreal that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 16 September 2025.

Tue 30/1206:50LHR - YUL

1 stop9h 55mAir Canada

Tue 13/113:20YUL - LHR

2 stops14h 10mAir Canada

Deal found 15/9£363

Thu 20/1107:40LHR - YUL

2 stops15h 43mLufthansa

Sun 7/1215:10YUL - LHR

1 stop10h 20mLufthansa

Deal found 13/9£364

Sat 14/206:30LHR - YUL

2 stops21h 42mDelta

Tue 17/219:05YUL - LHR

1 stop10h 25mDelta

Deal found 13/9£391

Tue 7/1007:25LHR - YUL

2 stops18h 04mUnited Airlines

Tue 14/1006:00YUL - LHR

1 stop9h 40mUnited Airlines

Deal found 14/9£392

Wed 31/1207:40LHR - YUL

1 stop15h 40mLufthansa

Sun 11/119:30YUL - LHR

Nonstop6h 40mLufthansa

Deal found 15/9£375

Tue 30/1213:25LHR - YUL

Nonstop7h 45mAir Canada

Wed 14/119:30YUL - LHR

Nonstop6h 40mAir Canada

Deal found 15/9£379

Tue 7/1008:30LHR - YUL

2 stops16h 15mUnited Airlines

Mon 13/1006:00YUL - LHR

1 stop9h 40mUnited Airlines

Deal found 15/9£394

Mon 29/1207:40LHR - YUL

1 stop15h 40mLufthansa

Wed 14/119:30YUL - LHR

Nonstop6h 40mLufthansa

Deal found 15/9£375

Wed 29/1007:30LHR - YUL

2 stops16h 18mUnited Airlines

Wed 5/1110:50YUL - LHR

2 stops19h 00mUnited Airlines

Deal found 14/9£394

Mon 29/1208:45LHR - YUL

1 stop14h 35mLufthansa

Tue 13/115:10YUL - LHR

1 stop12h 20mLufthansa

Deal found 15/9£380

Direct flights from Heathrow to Montreal
Explore direct flight options from Heathrow to Montreal based on user searches, and compare prices and availability for your desired travel dates. Data last updated 16 September 2025.

Wed 5/1116:10LHR - YUL

Nonstop7h 35mBritish Airways

Sun 9/1120:40YUL - LHR

Nonstop6h 50mBritish Airways

Deal found 13/9£358

Wed 29/1016:10LHR - YUL

Nonstop7h 35mBritish Airways

Wed 5/1120:40YUL - LHR

Nonstop6h 50mBritish Airways

Deal found 13/9£364

Fri 14/1116:10LHR - YUL

Nonstop7h 35mBritish Airways

Sun 16/1120:40YUL - LHR

Nonstop6h 50mBritish Airways

Deal found 13/9£365

Wed 5/1116:10LHR - YUL

Nonstop7h 35mBritish Airways

Mon 17/1120:40YUL - LHR

Nonstop6h 50mBritish Airways

Deal found 13/9£367

Mon 22/909:30LHR - YUL

Nonstop7h 10mAir Canada

Sun 28/918:55YUL - LHR

Nonstop6h 35mAir Canada

Deal found 15/9£368

Wed 24/914:05LHR - YUL

Nonstop7h 10mAir Canada

Sun 9/1119:10YUL - LHR

Nonstop7h 00mAir Canada

Deal found 14/9£369

Thu 30/1016:10LHR - YUL

Nonstop7h 35mBritish Airways

Thu 6/1120:40YUL - LHR

Nonstop6h 50mBritish Airways

Deal found 15/9£369

Wed 24/918:05LHR - YUL

Nonstop7h 10mBritish Airways

Mon 24/1120:40YUL - LHR

Nonstop6h 50mBritish Airways

Deal found 14/9£371

Sat 29/1116:10LHR - YUL

Nonstop7h 35mBritish Airways

Sat 6/1220:30YUL - LHR

Nonstop6h 50mBritish Airways

Deal found 13/9£373

Sun 23/1113:25LHR - YUL

Nonstop7h 45mAir Canada

Sun 30/1119:10YUL - LHR

Nonstop7h 00mAir Canada

Deal found 13/9£374

Wed 24/918:05LHR - YUL

Nonstop7h 10mBritish Airways

Wed 15/1022:10YUL - LHR

Nonstop6h 40mBritish Airways

Deal found 14/9£375

Wed 3/1216:10LHR - YUL

Nonstop7h 35mBritish Airways

Sun 7/1220:40YUL - LHR

Nonstop6h 50mBritish Airways

Deal found 13/9£375

Last-minute flights from Heathrow to Montreal
Discover last-minute flight deals from Heathrow to Montreal. Data last updated 16 September 2025 and is based on user searches.

Tue 23/910:30LHR - YUL

1 stop10h 30mLufthansa

Mon 24/1114:00YUL - LHR

1 stop11h 30mLufthansa

Deal found 14/9£361

Wed 24/906:00LHR - YUL

1 stop12h 50mAir Canada

Tue 25/1122:30YUL - LHR

2 stops17h 05mAir Canada

Deal found 14/9£358

Wed 24/908:40LHR - YUL

1 stop11h 20mAir Canada

Wed 15/1013:25YUL - LHR

2 stops14h 10mAir Canada

Deal found 15/9£360

Wed 24/906:00LHR - YUL

1 stop12h 50mMultiple Airlines

Mon 24/1119:10YUL - LHR

Nonstop7h 00mMultiple Airlines

Deal found 14/9£362

Wed 24/906:00LHR - YUL

1 stop12h 50mMultiple Airlines

Tue 30/918:05YUL - LHR

1 stop10h 35mMultiple Airlines

Deal found 15/9£363

Wed 24/908:40LHR - YUL

1 stop11h 20mAir Canada

Thu 2/1009:40YUL - LHR

1 stop15h 50mAir Canada

Deal found 15/9£364

Thu 25/906:50LHR - YUL

1 stop9h 45mMultiple Airlines

Sun 28/921:05YUL - LHR

1 stop18h 55mMultiple Airlines

Deal found 15/9£364

Sun 28/906:50LHR - YUL

1 stop9h 45mAir Canada

Thu 23/1013:25YUL - LHR

2 stops12h 05mAir Canada

Deal found 14/9£358

Mon 27/1017:50LHR - YUL

1 stop22h 55mMultiple Airlines

Sun 9/1116:45YUL - LHR

1 stop13h 30mMultiple Airlines

Deal found 14/9£366

Thu 30/1006:50LHR - YUL

1 stop9h 55mAir Canada

Wed 5/1116:45YUL - LHR

1 stop10h 20mAir Canada

Deal found 14/9£359

Thu 30/1006:50LHR - YUL

1 stop9h 55mMultiple Airlines

Thu 6/1116:45YUL - LHR

1 stop20h 05mMultiple Airlines

Deal found 15/9£361

Thu 30/1006:50LHR - YUL

1 stop9h 55mAir Canada

Thu 6/1118:35YUL - LHR

1 stop22h 05mAir Canada

Deal found 15/9£365

One-way flights from Heathrow to Montreal
Search for one-way flight options from Heathrow to Montreal. Find affordable one-way fares based on user searches. Data last updated 16 September 2025.

Thu 13/1115:15LHR - YUL

1 stop33h 25mMultiple Airlines

Deal found 15/9£232

Tue 25/1115:15LHR - YUL

1 stop33h 25mMultiple Airlines

Deal found 13/9£259

Fri 31/1015:15LHR - YUL

1 stop33h 25mMultiple Airlines

Deal found 12/9£265

Wed 5/1109:15LHR - YUL

1 stop15h 25mMultiple Airlines

Deal found 14/9£271

Sun 14/1208:55LHR - YUL

1 stop16h 55mVirgin Atlantic

Deal found 15/9£275

Mon 22/915:05LHR - YUL

1 stop25h 30mMultiple Airlines

Deal found 15/9£286

Thu 9/1015:05LHR - YUL

1 stop27h 55mMultiple Airlines

Deal found 14/9£287

Cheapflights Fare Finder

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

LondonMontreal

LHR - YUL

LHRYUL

London Heathrow

Tue 30/12

06:50-11:45

1 stop9h 55m

Montreal Pierre Elliott Trudeau Intl

Tue 13/1

13:20-08:30

2 stops14h 10m

£363

LondonMontreal

LHR - YUL

LHRYUL

London Heathrow

Thu 20/11

07:40-18:23

2 stops15h 43m

Montreal Pierre Elliott Trudeau Intl

Sun 7/12

15:10-06:30

1 stop10h 20m

£364

LondonMontreal

LHR - YUL

LHRYUL

London Heathrow

Wed 31/12

07:40-18:20

1 stop15h 40m

Montreal Pierre Elliott Trudeau Intl

Sun 11/1

19:30-07:10

Nonstop6h 40m

£375

LondonMontreal

LHR - YUL

LHRYUL

London Heathrow

Mon 29/12

07:40-18:20

1 stop15h 40m

Montreal Pierre Elliott Trudeau Intl

Wed 14/1

19:30-07:10

Nonstop6h 40m

£375

LondonMontreal

LHR - YUL

LHRYUL

London Heathrow

Tue 30/12

13:25-16:10

Nonstop7h 45m

Montreal Pierre Elliott Trudeau Intl

Wed 14/1

19:30-07:10

Nonstop6h 40m

£379

LondonMontreal

LHR - YUL

LHRYUL

London Heathrow

Mon 29/12

08:45-18:20

1 stop14h 35m

Montreal Pierre Elliott Trudeau Intl

Tue 13/1

15:10-08:30

1 stop12h 20m

£380

LondonMontreal

LHR - YUL

LHRYUL

London Heathrow

Sat 14/2

06:30-23:12

2 stops21h 42m

Montreal Pierre Elliott Trudeau Intl

Tue 17/2

19:05-10:30

1 stop10h 25m

£391

LondonMontreal

LHR - YUL

LHRYUL

London Heathrow

Tue 7/10

07:25-20:29

2 stops18h 04m

Montreal Pierre Elliott Trudeau Intl

Tue 14/10

06:00-20:40

1 stop9h 40m

£392

LondonMontreal

LHR - YUL

LHRYUL

London Heathrow

Tue 7/10

08:30-19:45

2 stops16h 15m

Montreal Pierre Elliott Trudeau Intl

Mon 13/10

06:00-20:40

1 stop9h 40m

£394

LondonMontreal

LHR - YUL

LHRYUL

London Heathrow

Wed 29/10

07:30-19:48

2 stops16h 18m

Montreal Pierre Elliott Trudeau Intl

Wed 5/11

10:50-10:50

2 stops19h 00m

£394

Flights are sorted by cheapest return flights first.

Deals found on 13/9

Showing 1-10 of 20 results

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

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 85 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 London Heathrow Airport to Montreal?

Currently, February is the cheapest month in which you can book a flight from London Heathrow Airport to Montreal (average of £475). Flying from London Heathrow Airport to Montreal in July is currently the most expensive (average of £743). 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?

Unlike in the evening, when flights are generally more expensive, you can save up to 14% on flights from London Heathrow Airport to Montreal by exploring options for tickets in the afternoon.

What is the cheapest day to fly from London Heathrow Airport to Montreal?

Travellers seeking maximum savings on their London Heathrow Airport to Montreal flight should consider departing on Tuesday afternoons when fares are most often at their lowest. Thursday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from London Heathrow Airport to Montreal

The most flights from LHR to YMQ are scheduled on a Tuesday (17 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (10 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?

Lisbon (LIS) – chosen by Cheapflights users on 27% 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?

Zurich (ZRH) is the most affordable one-stop option, with an average return flight price of £360.

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

Flights via Ottawa (YOW) have the shortest average one-way travel time for one-stop routes: 10h 22m.

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

Flights via Newark (EWR) offer the fastest connection on this route, with an average stopover time of 1h 38m.

Reviews of airlines servicing Montreal

See what other customers who have flown with Finnair, United 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.

Finnair

7.6

Good

1,323 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.

Finnair

7.6

Good

1,323 reviews

Finnair

7.6

Good

1,323 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,May 2025

FRA - DFW

United Airlines

7.4

Good

8,929 reviews

Finnair

7.6

Good

1,323 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,May 2025

FRA - DFW

Air Canada

7.1

Good

10,000 reviews

Finnair

7.6

Good

1,323 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,May 2025

FRA - DFW

Lufthansa

6.8

Okay

7,407 reviews

Finnair

7.6

Good

1,323 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,May 2025

FRA - DFW

British Airways

6.7

Okay

7,361 reviews

Finnair

7.6

Good

1,323 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,May 2025

FRA - DFW

Related info for your journey

How long is the flight from London Heathrow Airport to Montreal?
For as low as £363, Air Canada can have you in Montreal from London Heathrow Airport in 9h 55m. 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 France (£95), Virgin Atlantic (£256), and Air Transat (£316) offers the cheapest pricing from London Heathrow Airport to Montreal. Air France is 79% cheaper than the average price of flights available within the next 90 days to this destination.
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 (81%), Austrian Airlines (81%) or United Airlines (81%) 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 £1,035, our data shows the cheapest flight currently is £367. When looking at the most popular route, (London Heathrow - Montreal Pierre Elliott Trudeau Intl), you can expect to pay £345 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, February is the cheapest month in which you can book a flight from London Heathrow Airport to Montreal (average of £475). Flying from London Heathrow Airport to Montreal in July is currently the most expensive (average of £743). 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

Top 9 airlines flying from Heathrow to Montreal

Airline	Cheapest	Average	Flexibility	On-time
Air France	Cheapest£95	Average£461	FlexibilityNo cancel fee	On-time77%	Search Air France flights
Virgin Atlantic	Cheapest£256	Average£714	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic flights
Air Transat	Cheapest£316	Average£482	FlexibilityNo cancel fee	On-time50%	Search Air Transat flights
United Airlines	Cheapest£322	Average£548	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
TAP AIR PORTUGAL	Cheapest£332	Average£530	FlexibilityNo cancel fee	On-timeN/A	Search TAP AIR PORTUGAL flights
Air Canada	Cheapest£365	Average£479	FlexibilityNo cancel fee	On-time67%	Search Air Canada flights
Lufthansa	Cheapest£370	Average£500	FlexibilityNo cancel fee	On-time76%	Search Lufthansa flights
British Airways	Cheapest£372	Average£516	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
Finnair	Cheapest£394	Average£577	FlexibilityNo cancel fee	On-time76%	Search Finnair flights

Fly with Cheapflights

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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Cheap flights from London Heathrow Airport to Montreal from £232

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 13/11. Fares are subject to change and may not be available on all flights or dates of travel.

Cheapflights Tip: The best prices from London Heathrow to Montreal are usually found in June or September, booked 85 days in advance, depart on a Wednesday or Tuesday and return on a Sunday

Cheap flight deals from Heathrow to Montreal

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

Find flight deals from Heathrow to Montreal

Cheapest flights from Heathrow to MontrealExplore 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 16 September 2025.

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 16 September 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from London Heathrow Airport to Montreal that are best for you.

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.

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Everything you need to know about your flight from London Heathrow Airport to Montreal

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

Use this chart to determine the optimal time to book a return flight from Heathrow to Montreal. Price data was last updated on 12 September 2025.

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

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 16 September 2025.

What is the cheapest day to fly from London Heathrow Airport to Montreal?

Use this chart to determine the cheapest time to fly return from Heathrow to Montreal. Price data was last updated on 16 December 2024.

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 16 September 2025.

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.

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.

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.

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.

Reviews of airlines servicing Montreal

See what other customers who have flown with Finnair, United 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.

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?

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

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

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

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

How can I find direct flights from Heathrow to Montreal?

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

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

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Alternative routes for Heathrow to Montreal

See prices for flight routes from nearby airports that may be better suited for you.

Top 9 airlines flying from Heathrow to Montreal

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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 16 September 2025.