Traffic across the European network is up by 5% so far this year compared to the same period in 2024, with overall air traffic flow management (ATFM) delays also up 5% compared to 2024. These trends are expected to continue into the summer, where we expect to see growth of 5% spread asymmetrically across the network. While some air navigation service providers (ANSPs) are expected to improve their performance compared to 2024, lack of air traffic control capacity to cope with traffic demand is expected to cause high delays in nine area control centres (ACCs). These bottlenecks will cause a daily average delay that is well above the target established by the EU Performance Plan. Additional disruptions such as weather or strikes could push delays even higher. (....)