Cheap flights from London Heathrow Airport to Calgary from C$ 614

The cheapest month to fly to Calgary from London Heathrow Airport is in February. Flight prices, which tend to average around C$ 665, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of February, then book flights to Calgary from London Heathrow Airport during November instead. Flights to Calgary in November, while not as cheap as those in February, still average around C$ 696.

The cheapest day to depart on your flight to Calgary is on a Thursday when prices can be found for as low as C$ 1,074. This is often the case because there is less demand to fly during this day of the week. On the other hand, Sunday is the most expensive day to depart from London Heathrow Airport because it is more convenient for both business and leisure travellers. As a result, prices tend to be around C$ 1,579.

Our data shows that the cheapest London Heathrow Airport to Calgary flights are usually those with departure times in the afternoon. Our users have found flights to Calgary in the afternoon for as low as C$ 922. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are C$ 1,787 on average. Flights to Calgary from London Heathrow Airport in the morning are generally more expensive because this time of day is more convenient for travellers’ schedules.

Fly from London Heathrow to Calgary for the best London Heathrow - Calgary flight prices

You are more likely to see cheaper flights to Calgary from London Heathrow Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Calgary for around C$ 1,188 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Calgary from London Heathrow Airport for as low as C$ 1,003 on momondo.

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

Delta, KLM, and British Airways are the most popular carriers operating from London Heathrow to Calgary

WestJet, Air Canada and KLM are the top three most popular airlines that fly to Calgary from London Heathrow Airport according to our data. WestJet is the first choice among our users, with 59% of people opting to fly with this airline when travelling to Calgary. Keep in mind that there are 4 different airlines that fly to Calgary on a routine basis, so you have a few additional options to choose from.

Historically, on average around 20% of flights between London and Calgary have experienced a delay on any given week. The average delay length over the past 12 months has been 146 minutes.

Generally, flights departing in the morning tend to experience fewer delays. Flights departing in the early afternoon 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. Monday 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 16% of their flights experiencing any sort of delay.

The number of flights available between London Heathrow Airport and Calgary is 10 per day as of July 2026. The most frequent departure time is 10:00a.m., with 91% of daily flights leaving at noon.

The number of flights available between London Heathrow Airport and Calgary is 74 per week as of July 2026. The most frequent departure day is Tue, with 16% of weekly flights leaving on this day.