The story of Mont Écho starts all the way back in 1963, when five businessmen from Ontario incorporated the Mont Écho Corporation. In mid-1963 the group installed two GMD Müller double chairlifts and a Poma lift. The main trail had a length of over 7,100 feet and a vertical of 1,500 feet, which instantly made Mont Écho well known across Quebec and Vermont and was a big draw to skiers.

When the hill was initially developed, it was originally proposed to build a base area further up the mountain. While this would have cut the vertical of Mont Écho, it would have made for more reliable snow conditions. Management dismissed this idea, instead deciding to use the full vertical of the mountain. This was partially due to the ski area not wanting to construct a costly access road up the mountain, along with the additional vertical feet it would provide. While this decision gave Mont Écho a huge vertical drop, it caused quite a few issues later on.

Mont Écho initially opened with around 15 marked trails on the mountain. The three-story base lodge was a beautiful building, partially constructed in a manufacturing shop in Ontario, and it was the perfect base for Mont Écho, remaining for quite a while after the ski area's closure.

The first year of operations, 1963, was a bad snow year. Mont Écho only managed to operate for a few weekends before the rain melted away the base. However, the ski area kept operating with a few good snow years happening here and there.

Mont Écho was part of one of the first ski pass programs. While today there are many mountain pass coalitions, the Ski East program was one of the early pioneers. Mont Écho along with Bromont, Mont Sutton, Mont Orford, Owl's Head, North Hatley, and Jay Peak, Vermont were all included. This pass gave skiers one day at each of all seven mountains and was a fairly big success. While North Hatley left the pass after a few seasons, the other six mountains stayed on the pass until it was dissolved in the late 1970s.

The ski area was also renowned for its ski instruction program. Ski lessons and rental equipment were offered in a deal that matched the price of a lift ticket. This program saw many people learn the sport and further increased the mountain's reputation in the local community.

In 1970, the bottom terminal of the main chairlift was rebuilt in an effort to boost the reliability and lifespan of the lift, after a fairly major rope evacuation. Additionally, the area invested heavily in grooming equipment. Despite this, Mont Écho did not have a snowmaking system, relying completely on natural snow.

While the top half of the mountain was more reliably open, it was often a challenge to open the bottom half, and if the bottom half couldn't be skied then skiers couldn't access the top section. Often the snow would be falling on the top half while it would be raining on the bottom half. Additionally, the bottom half of the mountain was quite flat and boring, even requiring several small uphill sections.

Mont Écho struggled to stay afloat for many years, even navigating a bankruptcy in 1968. The Cerro Alta Corporation purchased the resort, keeping it alive for another decade. Throughout the 1970s Mont Écho really struggled to stay afloat. With at least nine ski resorts in the immediate area, Mont Écho struggled to attract skiers while suffering from the fickle weather. The ski area operated during weekends only for the 1977-78 ski season, which would be the last year of downhill operations.

In 1978 the resort was sold to a group titled Cubec Corp. This corporation raised $200,000 via treasury shares and then purchased Mont Écho with this money. The only problem was that this money was supposed to go to the exploration and development of mining in Quebec. After the government got involved, all the defendants fled the country and could not be found. This was the end of Mont Écho.

Both chairlifts were removed in 1979 and sold to Mont Sutton nearby, where they continue to operate to this day. The original lodge was kept up and used as a hunting lodge, but sadly it burnt down around 2005. Today it is almost impossible to make out any of the former ski trails on Mont Écho, as nature has almost completely reclaimed the former ski resort.