Dobrolyot (Russian: Добролёт), sometimes Dobrolet full name: Russian (joint-stock) society of volunteer air fleet "Dobrolyot" Russian: Российское (акционерное) общество добровольного воздушного флота "Добролёт", was an airline that operated from 1923 to 1930 in the Soviet Union. It is the predecessor to Aeroflot.[1]