Cheap flights from Montreal Pierre Elliott Trudeau Intl Airport to London from £251

The cheapest month to fly to London from Montreal Pierre Elliott Trudeau Intl Airport is in December. Flight prices, which tend to average around £260, are often lower during this time because this is during the off-season. The month of February is another great option to travel to London, with average flight prices from Montreal Pierre Elliott Trudeau Intl Airport averaging around £270.

Our data shows that Sunday is the least expensive day to fly to London. Tickets to fly out on this day can be as low as £488. When flying out on a Saturday, the most expensive travel day of the week, you can expect to see flight prices from Montreal Pierre Elliott Trudeau Intl Airport to London for around £687.

The cheapest time of day to fly to London is in the afternoon when flights can be purchased for as low as £552. Flights in the evening are often more expensive, with an average ticket price of £597.

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

You are more likely to see cheaper flights to London from Montreal Pierre Elliott Trudeau Intl Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to London for around £566 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London from Montreal Pierre Elliott Trudeau Intl Airport for as low as £491 on momondo.

There are 3 cabin classes available to choose from on Montreal Pierre Elliott Trudeau Intl Airport to London 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 Montreal Pierre Elliott Trudeau Intl Airport to London.

As of June 2026, prices for Montreal Pierre Elliott Trudeau Intl Airport to London flights are approximately 32% more expensive when compared to flights at the same time last year.

Historically, on average around 19% of flights between Montreal and London have experienced a delay on any given week. The average delay length over the past 12 months has been 155 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.

Thursday 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 Transat have had the fewest delays on this route over the last 12 months, with about 10% of their flights experiencing any sort of delay.

18 flights are operational daily from Montreal Pierre Elliott Trudeau Intl Airport to London as of June 2026. The most popular departure time for this route is 22:00, with 100% of flights per day taking off in the evening.

As of June 2026, there are 126 flights per week flying from Montreal Pierre Elliott Trudeau Intl Airport to London. The most common day of the week flights depart is Tue, with 16% of flights taking off on this day.