Aim for the British Columbia interior, the snowiest reliable powder zone on the continent. The Kootenay and Columbia ranges around Revelstoke, Fernie, Whitewater, Kicking Horse and Red Mountain sit in a storm track that delivers frequent, dry, deep snow all winter, and the smaller resorts among them stay untracked for days simply because so few people are there. The coast at Whistler gets more snow still, but it falls heavier and the crowds are large.
Match the terrain to your group honestly. Kicking Horse, Revelstoke and Whitewater are serious mountains where the best powder is steep and the beginner terrain is thin, so they reward strong, confident skiers. Families and mixed groups should point at Big White or Sun Peaks, where the same reliable interior snow falls on gentler, forgiving tree runs with proper ski in ski out villages.
Build in flexibility and consider going lift assisted. Many of these resorts sit beside cat and heli operations, and a single guided day can turn a good powder trip into the trip of a lifetime. Chase the active storm rather than a fixed brand, ski midweek to dodge the weekend crowds, and compare the snow south of the border in our United States powder ranking and across the Atlantic in Switzerland for powder. Plan the logistics from the Canada destination guide.