Question 1

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

Accepted Answer

According to our current data, Air Canada (£346), SWISS (£362), and TAP AIR PORTUGAL (£364) offers the cheapest pricing from London Heathrow Airport to Montreal. Air Canada is 26% cheaper than the average price of flights available within the next 90 days to this destination.

Question 2

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

Accepted Answer

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.

Question 3

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

Accepted Answer

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.

Question 4

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

Accepted Answer

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.

Question 5

Weekly flight availability from London Heathrow Airport to Montreal

Accepted Answer

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).

Question 6

E

Accepted Answer

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.

Question 7

E

Accepted Answer

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).

Question 8

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

Accepted Answer

While on average a flight from London Heathrow Airport to Montreal is generally £1,378, our data shows the cheapest flight currently is £350. When looking at the most popular route, (London Heathrow - Montreal Pierre Elliott Trudeau Intl), you can expect to pay £346 for that flight.

Question 9

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

Accepted Answer

No one likes to see their flight delayed. When booking a flight from London Heathrow Airport to Montreal consider choosing Austrian Airlines (94%), United Airlines (94%) or Lufthansa (94%) as they are the most reliable in getting you off to your destination on time.

Question 10

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

Accepted Answer

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.

Question 11

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

Accepted Answer

Users have found that leaving on a Tuesday can be a cost-effective option. It’s possible to save up to 8% on your flight compared to booking on days when demand is much higher.

Question 12

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

Accepted Answer

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 31% on the cost of this flight compared to booking a flight leaving this week. We have found prices from £403 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as £494.

Question 13

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

Accepted Answer

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 24%.

Question 14

What is the cheapest time of day to fly from LHR to YMQ?

Accepted Answer

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.

Question 15

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

Accepted Answer

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

Question 16

How can I find direct flights from Heathrow to Montreal?

Accepted Answer

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

Question 17

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

Accepted Answer

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.

Question 18

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

Accepted Answer

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.

Question 19

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

Accepted Answer

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.

Question 20

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

Accepted Answer

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

Question 21

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

Accepted Answer

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.

Round-trip from	£346
One-way from	£258
Popular in	August
Cheapest in	September
Average price	£570
Good round-trip deal	£440 or less
Good one-way deal	£541 or less

Airline	Cheapest	Average	Flexibility	On-time
Air France	Cheapest£95	Average£522	FlexibilityNo cancel fee	On-time77%	Search Air France flights
Air Transat	Cheapest£321	Average£552	FlexibilityNo cancel fee	On-time50%	Search Air Transat flights
United Airlines	Cheapest£322	Average£481	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£476	FlexibilityNo cancel fee	On-time67%	Search Air Canada flights
Lufthansa	Cheapest£366	Average£483	FlexibilityNo cancel fee	On-time76%	Search Lufthansa flights
British Airways	Cheapest£369	Average£530	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
Virgin Atlantic	Cheapest£380	Average£676	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic flights
Finnair	Cheapest£400	Average£710	FlexibilityNo cancel fee	On-time76%	Search Finnair flights

Cheap flights from London Heathrow Airport to Montreal from £258

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 6/11. 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 September or May, booked 85 days in advance, depart on a Wednesday or Tuesday and return on a Sunday

Cheap flight deals from Heathrow to Montreal

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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 11 July 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 11 July 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.

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?

Use this chart to determine the optimal time to book a return flight from Heathrow to Montreal. Price data was last updated on 27 June 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 11 July 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 11 July 2025.

Reviews of airlines servicing Montreal

See what other customers who have flown with Delta, SWISS, 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.

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?

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.

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

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

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

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

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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 11 July 2025.