Cheap flights from Montreal to London from R16 986

The month of November is, on average, the cheapest month to fly to London from Montreal, with most prices found around R10 096. If you are unable to visit London during the month of November, then departing from Montreal during the month October is also very affordable. Most momondo users find prices during this month for around R10 573.

The cheapest day to depart on your flight to London is on a Friday when prices can be found for as low as R17 068. This is often the case because there is less demand to fly during this day of the week. On the other hand, Thursday 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 R21 448.

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

You are more likely to see cheaper flights to London from Montreal when booking weeks ahead of your departure date. In general, you can expect to find flights to London for around R12 301 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London from Montreal for as low as R10 721 on momondo.

There are 2 cabin classes available to choose from on Montreal to London flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

As of August 2026, prices for Montreal to London flights are approximately 12% more expensive when compared to flights at the same time last year.

Historically, on average around 22% 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 153 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.

Saturday is statistically the day of the week that experiences the fewest delays on this flight route. Friday has historically seen more delays on average compared to the rest of the week.

According to our data, Air Transat have had the fewest delays on this route over the last 12 months, with about 13% of their flights experiencing any sort of delay.