Flumserberg stacks 43 runs and 65 kilometres of piste onto a long slope above Walensee, falling 1,557 metres from the 2,222-metre Leist summit to 665 metres. Intermediates own the mountain at 62%, with 22% beginner and 16% advanced, and nothing classed as expert. The network is built around detachable lifts: four gondolas, four eight-seat chairs, four quads, three six-seaters, a double chair and four T-bars. Prodkamm's eight-seater, built in 2011, was the first of its kind in Switzerland. Lower slopes start well below the treeline, so snowmaking supports the valley runs.

The BergJet gondola, opened in 2019 with Porsche Design Studio cabins, lifts skiers from Tannenboden to Maschgenkamm at 2,020 metres, and a short descent leads to the six-seat chair for Leist. Prodkamm has wide, open pistes, while the ungroomed Terza route, about 10 kilometres to Oberterzen, is reserved for very good skiers. Friday night skiing runs on the lit Chrüz piste, and Switzerland's first permanent skicross course is here. The real strength is volume for intermediates, families and day-trippers who want a large area within reach of Zurich. Lifts can queue at weekends.

The 2025-26 season operates 6 December 2025 through 6 April 2026 spanning four months across typical early December to early April windows. Operations historically commence mid to late November when snowmaking permits with closures mid-April depending on snow retention at the 665-2,222 metre elevation band. The resort markets itself amongst eastern Switzerland's more snow-reliable operations due to topography and comprehensive snowmaking infrastructure covering majority terrain. Current season data shows 183 centimetres total snowfall with 35 centimetres base depth as of reporting dates.

Flumserberg receives 320 centimetres average annual snowfall across its mid-elevation range between 1,200-2,200 metres capturing precipitation from systems moving across Lake Walensee. The northern exposure aids snow preservation whilst the mid-elevation positioning catches moisture from both low and high cloud systems that higher resorts miss according to regular visitors. Snowmaking across 9 kilometres using 35 cannons supplements natural snowfall particularly early and late season on lower runs to Tannenboden bases. Average snow depth reaches 90 centimetres at summit and 56 centimetres at base during February peak conditions.

January through March delivers optimal conditions with the second week of January historically the snowiest period averaging 54 centimetres weekly accumulation and 3.4 snowy days. February provides the deepest snowpack and most reliable conditions whilst December and April require snow management on lower slopes. Spring skiing extends through March with good coverage whilst April sees variable conditions dependent on seasonal patterns. The resort attracts fewer crowds mid-week during January and February when Zurich residents focus on weekends.

Friday night skiing from 18:30 to 21:30 features the 2-kilometre Chrüz illuminated run through the Flumserberg Galaxie light installation reaching Bergrestaurant Chrüz for the Skichilbi event. The season calendar includes standard Swiss school holiday peaks in February half-term and Easter periods when advance booking proves essential. No major competition events define the calendar though the resort's skicross course hosts training and club racing throughout winter months for specialist discipline athletes.