The King Air 350 has a comfortable and roomy 'squared-oval' pressurized cabin. The air-conditioned cabin is fitted with double club-style seats for eight passengers,

An Ultra Electronics Ultra-quiet active noise control system reduces the in-flight noise to under 80dB(A) in the passenger cabin. The active Ultra-quiet system acoustically cancels propeller noise in the cabin by introducing sound waves that are of equal frequency and amplitude but are of opposite phase to the unwanted noise.