Cheap flights from London Heathrow Airport to Montreal from £322

In general, September is the cheapest month to fly from London Heathrow Airport to Montreal Pierre Elliott Trudeau Intl Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around £425. If you are unable to visit Montreal Pierre Elliott Trudeau Intl Airport during the month of September, then departing from London Heathrow Airport during the month May is also very affordable. Most momondo users find prices during this month for around £451.

Our data shows that Friday is the least expensive day to fly to Montreal Pierre Elliott Trudeau Intl Airport. Tickets to fly out on this day can be as low as £540. Flights from London Heathrow Airport to Montreal Pierre Elliott Trudeau Intl Airport on a Saturday will generally be more expensive and average around £571. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

Flying to Montreal Pierre Elliott Trudeau Intl Airport from London Heathrow Airport in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as £522 when looking at flights departing in the afternoon. Flights at midday are often more expensive, with an average ticket price of £584.

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

You are more likely to see cheaper flights to Montreal Pierre Elliott Trudeau Intl Airport from London Heathrow Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Montreal Pierre Elliott Trudeau Intl Airport for around £499 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Montreal Pierre Elliott Trudeau Intl Airport from London Heathrow Airport for as low as £457 on momondo.

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

You could potentially save up to 4% on your flight if you consider stops on a London Heathrow Airport to Montreal Pierre Elliott Trudeau Intl Airport flight.

As of March 2026, prices for London Heathrow Airport to Montreal Pierre Elliott Trudeau Intl Airport flights are approximately 14% more expensive when compared to flights at the same time last year.

KLM is the most popular carrier operating from London Heathrow to Montreal Pierre Elliott Trudeau Intl

Air Canada, British Airways and Lufthansa are the top three most popular airlines that fly to Montreal Pierre Elliott Trudeau Intl Airport from London Heathrow Airport according to our data. Air Canada is the first choice among our users, with 71% of people opting to fly with this airline when travelling to Montreal Pierre Elliott Trudeau Intl Airport. Keep in mind that there are 7 different airlines that fly to Montreal Pierre Elliott Trudeau Intl Airport on a routine basis, so you have a few additional options to choose from.

Historically, on average around 9% of flights between London and Montreal have experienced a delay on any given week. The average delay length over the past 12 months has been 158 minutes.

Generally, flights departing in the morning tend to experience fewer delays. Flights departing in the evening have, in the past, seen delays more frequently in comparison.

Wednesday is statistically the day of the week that experiences the fewest delays on this flight route. Sunday has historically seen more delays on average compared to the rest of the week.

According to our data, Air Canada have had the fewest delays on this route over the last 12 months, with about 6% of their flights experiencing any sort of delay.

As of March 2026, there are 12 flights per day flying from London Heathrow Airport to Montreal Pierre Elliott Trudeau Intl Airport. The most common time of day flights depart is 13:00, with 100% of flights taking off in the afternoon.

87 flights are operational weekly from London Heathrow Airport to Montreal Pierre Elliott Trudeau Intl Airport as of March 2026. The most popular departure day for this route is Mon, with 15% of flights per week taking off on this day.