An eruption of Indonesia’s Mount Anak Krakatau caused the suspension of hundreds of flights at Jakarta’s main airport on Sunday after some school activities and fishing were halted.

Mount Anak Krakatau has erupted since late on Friday, with volcanic ash disrupting hundreds of flights as Indonesia faces a string of natural disasters across the archipelago.

The suspension of flight operations at Soekarno-Hatta International Airport, extended several times, has affected more than 900 flights, according to Indonesia's transportation…