We've gone through lots of different flights, to help you find the cheapest way to get from London Heathrow to Calgary. You can choose from ten airlines. At the moment, 11 / Jan / 2020 is the cheapest date to travel, but scroll through the results to find the option that works best for you.
United Airlines is the most popular airline that flies from London Heathrow to Calgary. But it's still worth looking at other options, as there are 684 flights to Calgary every week. If you want to broaden your search, look at flights departing from other airports.
The distance between London Heathrow to Calgary is 7020 km. Normally, it takes about 15 hrs 30 mins to fly, and you can definitely expect the journey to be at least 8 hrs 55 mins. You can see the various flight times in the results.
If you want to travel in March, it's best to book your flights early, as this is peak season in Calgary. The cheapest month to fly is normally November – try searching three to four months prior to then to get a bargain. You can also search by month, which will reveal the cheapest time of the week to fly.