Samnaun even reported 25cm (10 inches) of new snow on Monday. 35 of its 40 lifts are still open with 160 cm of snow on the mountain. Samnaun's season will end on May 2nd.
In St. Moritz the ski lifts are still running, too. "Several mountain railways and lifts will be open through to May", the local tourism association informs. "With a snow depth of 80 to 120 cm skiing conditions are still great on the mountains around St. Moritz."
Gstaad as well as Saas Fee will allow skiing until a week on Sunday (May 2nd), but Engelberg with three metres of snow on upper slopes won't close before May 24th. Zermatt offers 365 days of skiing and snowboarding, with its year long season officially ending on May 31st and officially recommencing on June 1st.