Cheap flights from Montreal Pierre Elliott Trudeau Intl Airport to the United Kingdom from C$ 399

If you aren’t able to travel during the month of January, then book flights to United Kingdom from Montreal Pierre Elliott Trudeau Intl Airport during October instead. Flights to United Kingdom in October, while not as cheap as those in January, still average around C$ 970.

According to our data, Saturday is the cheapest day to fly to United Kingdom from Montreal Pierre Elliott Trudeau Intl Airport. The lowest ticket price found for a Saturday departure recently was C$ 1,109. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. Flights from Montreal Pierre Elliott Trudeau Intl Airport to United Kingdom on a Tuesday will generally be more expensive and average around C$ 1,184. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

In the evening is the cheapest time of day to fly from Montreal Pierre Elliott Trudeau Intl Airport to United Kingdom when you can find flight prices for as low as C$ 1,136. Flying to United Kingdom in the evening is an ideal time because this is during off-peak travel hours. In contrast, the most expensive time of day to depart to United Kingdom is in the afternoon when prices are around C$ 1,150.

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

You are more likely to see cheaper flights to United Kingdom from Montreal Pierre Elliott Trudeau Intl Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to United Kingdom for around C$ 1,089 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to United Kingdom from Montreal Pierre Elliott Trudeau Intl Airport for as low as C$ 1,021 on momondo.

There are 4 cabin classes available to choose from on Montreal Pierre Elliott Trudeau Intl Airport to United Kingdom flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

TAP AIR PORTUGAL, British Airways, and Virgin Atlantic are the most popular carriers operating from Montreal Pierre Elliott Trudeau Intl to United Kingdom

Air Canada, British Airways and Lufthansa are the top three most popular airlines that fly to United Kingdom from Montreal Pierre Elliott Trudeau Intl Airport according to our data. Air Canada is the first choice among our users, with 47% of people opting to fly with this airline when travelling to United Kingdom. Keep in mind that there are 10 different airlines that fly to United Kingdom on a routine basis, so you have a few additional options to choose from.

Historically, on average around 24% of flights between Montreal and United Kingdom have experienced a delay on any given week. The average delay length over the past 12 months has been 150 minutes.

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

Saturday 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 has had the least delays on this route over the last 12 months, with about 20% of their flights experiencing any sort of delay.

As of September 2026, there are 16 flights per day flying from Montreal Pierre Elliott Trudeau Intl Airport to United Kingdom. The most common time of day flights depart is 10:00p.m., with 100% of flights taking off in the evening.

As of September 2026, 115 flights take off from Montreal Pierre Elliott Trudeau Intl Airport and land in United Kingdom each week. The most common flight departure day for this route is Tue, with 17% of weekly flights taking off on this day.