Cheap flights from London to Montreal from C$ 450

The month of September is, on average, the cheapest month to fly to Montreal Pierre Elliott Trudeau Intl Airport from London, with most prices found around C$ 836. The month of January is another great option to travel to Montreal Pierre Elliott Trudeau Intl Airport, with average flight prices from London averaging around C$ 889.

The cheapest day to depart on your flight to Montreal Pierre Elliott Trudeau Intl Airport is on a Thursday when prices can be found for as low as C$ 919. This is often the case because there is less demand to fly during this day of the week. On the other hand, Monday is the most expensive day to depart from London because it is more convenient for both business and leisure travellers. As a result, prices tend to be around C$ 1,122.

In the morning is the cheapest time of day to fly from London to Montreal Pierre Elliott Trudeau Intl Airport when you can find flight prices for as low as C$ 1,014. Flying to Montreal Pierre Elliott Trudeau Intl Airport in the morning is an ideal time because this is during off-peak travel hours. Try not to purchase tickets in the afternoon because they tend to be around C$ 1,132. Of course, these prices can vary depending on the time of year and what airport you fly to.

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

You are more likely to see cheaper flights to Montreal Pierre Elliott Trudeau Intl Airport from London 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 C$ 1,032 when searching weeks out. 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 for as low as C$ 985 on momondo.

There are 2 cabin classes available to choose from on London to Montreal Pierre Elliott Trudeau Intl Airport flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

No. A direct flight is the cheapest option for a flight between London to Montreal Pierre Elliott Trudeau Intl Airport.

As of November 2026, prices for London to Montreal Pierre Elliott Trudeau Intl Airport flights are approximately 5% more expensive when compared to flights at the same time last year.

Historically, on average around 12% 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 156 minutes.

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

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

According to our data, Air Canada has had the least delays on this route over the last 12 months, with about 7% of their flights experiencing any sort of delay.

11 flights are operational daily from London to Montreal Pierre Elliott Trudeau Intl Airport as of November 2026. The most popular departure time for this route is 1:00p.m., with 100% of flights per day taking off in the afternoon.

The number of flights available between London and Montreal Pierre Elliott Trudeau Intl Airport is 79 per week as of November 2026. The most frequent departure day is Sat, with 16% of weekly flights leaving on this day.