Two rock climbers have been airlifted from a south-east Queensland cliff after their climbing partner fell 300 metres to his death on Saturday afternoon.

Rescue crews found the 50-year-old Logan man's body about 5.50pm but were not able to notify his family until later in the night.

A climber fell from Mount Barney on Saturday afternoon. Credit:NPSR

Police confirmed the fallen man had been abseiling with a man and woman aged in their 30s.

An emergency helicopter was sent to Mount Barney, about 90 kilometres south-west of Brisbane, after the fall was reported about 12.50pm.