The Mount Anak Krakatau eruption and subsequent ash cloud has grounded flights at eight airports with thousands of passengers affected by the disruption.
On September 6, 2026, the Minister of Transportation in Indonesia, Dudy Purwagandhi, confirmed that operational services had been temporarily suspended including Soekarno-Hatta International Airport (CGK), Jakarta’s main international airport.
According to Indonesian news agency Antara, the Center for Volcanology and Geological Hazard Mitigation (PVMBG) said the eruption began at 23:07 on September 4, 2026, and ended at 00:04 on September 6, 2026. There were two subsequent eruptions on September 6, 2026.
Acting Deputy for Meteorology at the Meteorology, Climatology, and Geophysics Agency (BMKG), Andri Ramdhani, said in a recent update that the spread of dust was recorded “moving up to an altitude of 20,000 feet to the east and an altitude of 50,000 feet to the west”.
AirNav Indonesia issued several Notice to Airmen (NOTAM) alerts, closing airspace around airports as a safety precaution.
Purwagandhi listed the eight airports affected by the eruption of Mount Anak Krakatau as Soekarno Hatta Airport, Halim Perdanakusuma Airport (HLP), Radin Inten II Airport (TKG), Husein Sastranegara Airport (BDO), Budiarto Curug Airport (RTO), Pondok Cabe Airport (PCB), Taufik Kiemas Airport (TFY) and Atung Bungsu Airport (PXA).
Earlier in the day only six airports had been closed, but a change in wind direction caused two more to be added to the list.
Purwagandh told airlines that they must “provide clear information to passengers regarding schedule changes, flight cancellations, or diversions, and to ensure that passenger rights are met in accordance with applicable regulations”.
Garuda Indonesia told its passengers that due to volcanic ash from Mount Anak Krakatau, several “flights to and from Jakarta are currently being adjusted”.
BMKG said it is intensifying 24-hour monitoring of the development of the eruption and its impact on the atmosphere, aviation, and sea conditions.