A Ryanair plane on the tarmac
Planes at Sofia airport. Two Ryanair flights from Copenhagen and Madrid made emergency landings in the Bulgarian capital. Photograph: Stoyan Nenov/Reuters
Planes at Sofia airport. Two Ryanair flights from Copenhagen and Madrid made emergency landings in the Bulgarian capital. Photograph: Stoyan Nenov/Reuters
Bomb threats disrupt at least 15 flights across Europe, raising hybrid war fears

Planes forced into emergency landings or diversions two days after hoax alerts affected air travel