A system-wide disruption rippled across European aviation on May 23, producing over 1,850 delays and 41 cancellations. Storms near Rome Fiumicino and slot restrictions at Lisbon triggered cascading flow-control measures that spread north to Dublin, where late-arriving aircraft compressed already tight turnaround windows during peak season. Lufthansa, KLM, ITA Airways, and Ryanair were among the carriers most affected. EU passenger-rights rules entitle delayed travelers to care and possible compensation, provided they retain proof of delay. Travel managers are advised to build buffer time into bookings and prepare contingency plans for surface transport should flight options become unavailable.

