The number of planes with bomb threats in Europe has risen to 21

Bomb threats against passenger aircraft across Europe have risen to 21, with the latest alerts affecting flights in Spain and Serbia, though inspections found no explosive devices on board. The warnings have disrupted operations for multiple airlines, forcing delays and additional security checks at a time when carriers are already managing tight turnaround schedules. No single carrier or regulator has been blamed, and authorities have not yet identified a common source behind the alerts. Investors should watch whether the disruptions remain isolated scares or begin to weigh on airline punctuality and costs as European travel demand holds up.