The airfield of the delta Historical milestone · el Prat de Llobregat, Baix Llobregat, Barcelona Image of el Prat de Llobregat, not of the place itself. The plains of the delta hosted from 1916 a flying school and an airfield, taking advantage of the flat and open terrain. From those installations was born the airport that today serves Barcelona and occupies a good part of the municipal district. 1916 Photo: Smiley.toerist (CC BY-SA 4.0) What to see and do in el Prat de Llobregat