During 1964–1972, the runway, apron, packing, access roads went through improvement and reinforcement, the runway was refaced with asphalt from 8–10 cm in depth. As a result of this improvement, the runway reached 1,480 m long and 37 m wide, the apron was 23,100 square meters, apron of 2,106 square meters, access road was 2,100 meters long. Following the unification of Vietnam on 30 April 1975 until 1980, this airport was controlled and operated by the Vietnam People's Army, the airport mainly served high ranking governmental leaders on business and lifting residents from northern Vietnam to Lâm Đồng in the so-called "New Economic Movement".