Cheap flights from London to Montreal from C$ 581

The cheapest month to fly to Montreal from London is in September. Flight prices, which tend to average around C$ 741, 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 London during June instead. Flights to Montreal in June, while not as cheap as those in September, still average around C$ 771.

Our data shows that Sunday is the least expensive day to fly to Montreal. Tickets to fly out on this day can be as low as C$ 855. When flying out on a Thursday, the most expensive travel day of the week, you can expect to see flight prices from London to Montreal for around C$ 991.

Our data shows that the cheapest London to Montreal flights are usually those with departure times in the afternoon. Our users have found flights to Montreal in the afternoon for as low as C$ 851. Flights at noon are often more expensive with an average ticket price of C$ 966.

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

You are more likely to see cheaper flights to Montreal from London when booking weeks ahead of your departure date. In general, you can expect to find flights to Montreal for around C$ 906 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Montreal from London for as low as C$ 838 on momondo.

There are 3 cabin classes available to choose from on London to Montreal 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.

As of March 2026, prices for London to Montreal flights are approximately 13% cheaper when compared to flights at the same time last year.

Finnair, Aer Lingus, and British Airways are the most popular carriers operating from London to Montreal

Air Canada, Lufthansa and British Airways are the top three most popular airlines that fly to Montreal from London according to our data. Air Canada is the first choice among our users, with 53% of people opting to fly with this airline when travelling to Montreal. Keep in mind that there are 4 different airlines that fly to Montreal on a routine basis, so you have a few additional options to choose from.

Historically, on average around 10% 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 152 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.

Tuesday 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 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.

Zurich (ZRH) was the most common stop: 50% of momondo users choosing one-stop flights on this route connected there.

Flights via Toronto (YYZ) offer the lowest average round-trip price of C$ 667.

Flights connecting via Zurich (ZRH) have the shortest average one-way travel time: 11h 10m.

Zurich (ZRH) has the shortest average layover time for this route: 0h 50m.

6 flights are operational daily from London to Montreal as of March 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 is 48 per week as of March 2026. The most frequent departure day is Mon, with 19% of weekly flights leaving on this day.