BRUSSELS—Airports body ACI Europe said the region’s airports must be ready for change, as the European Union (EU) air travel market continues to boom against a backdrop of challenges. “We are enjoying the party, but there are a lot of clouds in the sky, a lot of uncertainty,” ACI Europe DG Olivier Jankovec said during a state of the industry address to the ACI Europe and World General Assembly here. “Clearly these are good times,” he said, referring to ...