Cheap flights from Montreal Pierre Elliott Trudeau Intl Airport to the United Kingdom from C$ 339

If you aren’t able to travel during the month of May, then book flights to United Kingdom from Montreal Pierre Elliott Trudeau Intl Airport during November instead. Flights to United Kingdom in November, while not as cheap as those in May, still average around C$ 818.

According to our data, Sunday is the cheapest day to fly to United Kingdom from Montreal Pierre Elliott Trudeau Intl Airport. The lowest ticket price found for a Sunday departure recently was C$ 1,036. 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 Wednesday will generally be more expensive and average around C$ 1,125. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

In the afternoon 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$ 1,065. Flying to United Kingdom in the afternoon 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 evening when prices are around C$ 1,095.

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$ 988 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$ 903 on momondo.

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

WestJet, TAP AIR PORTUGAL, and Aer Lingus are the most popular carriers operating from Montreal Pierre Elliott Trudeau Intl to United Kingdom

Air Canada, British Airways and Air Transat 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 48% of people opting to fly with this airline when travelling to United Kingdom. Keep in mind that there are 12 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 21% 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 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 Transat has had the least delays on this route over the last 12 months, with about 7% of their flights experiencing any sort of delay.

As of February 2026, there are 8 flights per day flying from Montreal Pierre Elliott Trudeau Intl Airport to United Kingdom. The most common time of day flights depart is 7:00p.m., with 100% of flights taking off in the evening.

As of February 2026, 58 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 Fri, with 22% of weekly flights taking off on this day.