Cheap flights from Montreal to London from C$ 474

If you are unable to visit London Gatwick Airport during the month of December, then departing from Montreal during the month July is also very affordable. Most momondo users find prices during this month for around C$ 508.

The cheapest day to depart on your flight to London Gatwick Airport is on a Thursday when prices can be found for as low as C$ 867. This is often the case because there is less demand to fly during this day of the week. On the other hand, Monday is the most expensive day to depart from Montreal because it is more convenient for both business and leisure travellers. As a result, prices tend to be around C$ 1,004.

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

You are more likely to see cheaper flights to London Gatwick Airport from Montreal when booking weeks ahead of your departure date. In general, you can expect to find flights to London Gatwick Airport for around C$ 903 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London Gatwick Airport from Montreal for as low as C$ 657 on momondo.

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

You could potentially save up to 12% on your flight if you consider stops on a Montreal to London Gatwick Airport flight.

Historically, on average around 7% 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 122 minutes.

Generally, flights departing in the evening tend to experience fewer delays. Flights departing at night 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 June 2026, there are 2 flights per day flying from Montreal to London Gatwick Airport. The most common time of day flights depart is 10:00p.m., with 100% of flights taking off in the evening.

As of June 2026, 14 flights take off from Montreal and land in London Gatwick Airport each week. The most common flight departure day for this route is Mon, with 14% of weekly flights taking off on this day.