Palma de Mallorca Airport, more commonly known as Son Sant Joan Airport, it is the third largest airport in Spain. During the summer months it is one of the busiest airports in Europe, and was used by 22.7 million passengers in 2013. The airport is the main base for the Spanish carrier Air Europa.
The history of Palma de Mallorca airport began in the 1920s, when seaplanes were used for postal services to the other Balearic Islands. A flat field next to Son Sant Joan was then used in the 1930s for flight routes to other parts of Spain.
Source: Wikipedia