Cheap flights from London Heathrow Airport to Calgary from £320

The cheapest month to fly to Calgary from London Heathrow Airport is in February. Flight prices, which tend to average around £352, 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 £365.

Our data shows that Thursday is the least expensive day to fly to Calgary. Tickets to fly out on this day can be as low as £659. When flying out on a Saturday, the most expensive travel day of the week, you can expect to see flight prices from London Heathrow Airport to Calgary for around £699.

The cheapest time of day to fly to Calgary is in the afternoon when flights can be purchased for as low as £491. Flights in the morning are often more expensive, with an average ticket price of £803.

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 £626 when searching weeks before you fly. 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 £507 on momondo.

There are 4 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 and KLM are the most popular carriers operating from London Heathrow to Calgary

WestJet, Air Canada and Lufthansa 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 46% of people opting to fly with this airline when travelling to Calgary. Keep in mind that there are 10 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 145 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 have had the fewest delays on this route over the last 12 months, with about 16% of their flights experiencing any sort of delay.

Vancouver (YVR) was the most common stop: 28% of momondo users choosing one-stop flights on this route connected there.

Flights via Vancouver (YVR) offer the lowest average return price of £375.

Flights connecting via Amsterdam (AMS) have the shortest average one-way travel time: 12h 08m.

Vancouver (YVR) has the shortest average stopover time for this route: 1h 11m.

As of July 2026, there are 10 flights per day flying from London Heathrow Airport to Calgary. The most common time of day flights depart is 10:00, with 93% of flights taking off at midday.

75 flights are operational weekly from London Heathrow Airport to Calgary as of July 2026. The most popular departure day for this route is Mon, with 16% of flights per week taking off on this day.