Two people were killed when their light aircraft attempted to land at Samedan airport in southeastern Switzerland on Thursday, local police announced.
A third person was seriously injured as the plane hit a snow bank and broke up. The aircraft had appeared to go into a spin as it came down.
It had left Vienna just after three o'clock, and the accident occurred about seventy-five minutes later.
Air safety experts have gone to the scene to investigate the causes of the crash.
Last Friday a plane overshot the runway at the same airport, but there were no casualties.
At 1,707 metres above sea level, Samedan, near the resort of St Moritz, is the highest in Europe. Deep snow has made current conditions there difficult.