A high-wing braced monoplane of conventional design that seated the pilot and passenger in tandem within a fully enclosed cabin, Breda Ba.15
was fitted with a wide variety of engines. The most popularly selected was the Walter Venus, but examples also left the factory powered by Cirrus III, de Havilland Gipsy, Colombo S.63, Walter Mars, and Isotta-Fraschini Asso engines.
Breda Ba.15s took part in several competitions. Among others, in August 1930 Col. Sacchi won the race Giro Aereo d'Italia flying Breda Ba.15S
(altogether 10 Bredas took part in this contest).
Besides their civil use, some Ba.15s were operated by the Regia Aeronautica
. An example is preserved at the Museo Nazionale della Scienza e della Tecnologia in Milan. One Ba.15 was bought in 1929 by an Italian resident in Paraguay, Nicola Bo. This plane was later sold to the Paraguayan Military Aviation and used in the Chaco War as a light transport plane with the serial T-8. It was destroyed in an accident in 1933.