Cheap flights from the United Kingdom to Montreal from C$ 380

The cheapest month to fly to Montreal from United Kingdom is in September. Flight prices, which tend to average around C$ 865, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of September, then book flights to Montreal from United Kingdom during January instead. Flights to Montreal in January, while not as cheap as those in September, still average around C$ 886.

Our data shows that Wednesday is the least expensive day to fly to Montreal. Tickets to fly out on this day can be as low as C$ 983. When flying out on a Monday, the most expensive travel day of the week, you can expect to see flight prices from United Kingdom to Montreal for around C$ 1,132.

Our data shows that the cheapest United Kingdom to Montreal flights are usually those with departure times in the morning. Our users have found flights to Montreal in the morning for as low as C$ 998. Flights in the afternoon are often more expensive with an average ticket price of C$ 1,142.

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

You are more likely to see cheaper flights to Montreal from United Kingdom when booking weeks ahead of your departure date. In general, you can expect to find flights to Montreal for around C$ 999 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Montreal from United Kingdom for as low as C$ 931 on momondo.

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

Air Transat, Delta, and TAP AIR PORTUGAL are the most popular carriers operating from United Kingdom to Montreal

Air Canada, British Airways and Lufthansa are the top three most popular airlines that fly to Montreal from United Kingdom according to our data. Air Canada is the first choice among our users, with 48% of people opting to fly with this airline when travelling to Montreal. Keep in mind that there are 3 different airlines that fly to Montreal on a routine basis, so you have a few additional options to choose from.

Historically, on average around 12% of flights between United Kingdom and Montreal have experienced a delay on any given week. The average delay length over the past 12 months has been 145 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.

Monday is statistically the day of the week that experiences the fewest delays on this flight route. Wednesday 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 6% of their flights experiencing any sort of delay.

As of August 2026, there are 18 flights per day flying from United Kingdom to Montreal. The most common time of day flights depart is 2:00p.m., with 39% of flights taking off in the afternoon.

126 flights are operational weekly from United Kingdom to Montreal as of August 2026. The most popular departure day for this route is Tue, with 17% of flights per week taking off on this day.