Humberto Delgado Airport, informally Lisbon Airport and previously Portela Airport, is an international airport located 7 kilometres northeast of the historical city centre of Lisbon, Portugal. With more than 35 million passengers per year, it is the 12th-largest airport in Europe in terms of passenger volume, and the busiest single-runway airport in mainlan…Humberto Delgado Airport, informally Lisbon Airport and previously Portela Airport, is an international airport located 7 kilometres northeast of the historical city centre of Lisbon, Portugal. With more than 35 million passengers per year, it is the 12th-largest airport in Europe in terms of passenger volume, and the busiest single-runway airport in mainland Europe. It also carries approximately 200,000 tonnes of cargo per year.