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While a 25-hour continuous eruption episode has ended, authorities say seismic activity remains high and the volcano is still on Alert Level III.
Flight operations in and around Jakarta have been severely disrupted after volcanic activity from Mount Anak Krakatau sent ash across parts of western Indonesia over the weekend.
Soekarno-Hatta International Airport (CGK) said it had suspended flight operations amid the increased eruption activity and advised passengers to check directly with their airline before travelling. At the time of writing, airport operations were suspended until 18:00 WIB, according to its Instagram update.
An earlier operational notice from Indonesia’s airport authority listed seven airports affected by volcanic ash:
- Soekarno-Hatta International Airport (CGK), Jakarta
- NOTAM A3368/26, replacing NOTAM A3355/26
- Radin Inten II Airport (TKG), Lampung
- NOTAM B1141/26, replacing NOTAM B1133/26
- Halim Perdanakusuma International Airport (HLP), Jakarta
- NOTAM A3369/26, replacing NOTAM A3354/26
- Husein Sastranegara International Airport (BDO), Bandung
- NOTAM C1102/26, replacing NOTAM C1098/26
- Budiarto Airport (RTO), Tangerang
- NOTAM C1101/26, replacing NOTAM C1097/26
- Pondok Cabe Airport (PCB), South Tangerang
- NOTAM C1104/26, replacing NOTAM C1095/26
- M. Taufik Kiemas Airport (TFY), Lampung
- NOTAM C1103/26, replacing NOTAM C1096/26
The disruption has hit regional carriers operating services to and from Jakarta. Singapore Airlines cancelled a series of Singapore–Jakarta flights on 6 and 7 September, warning that further services between Singapore and Indonesia could also be affected as the situation develops.
Batik Air Malaysia also cancelled eight flights between Kuala Lumpur, Subang, and Jakarta on 6 September. The affected services included OD398 and OD388 from Kuala Lumpur to Jakarta, OD346 from Subang to Jakarta, and the corresponding return flights.
Indonesia’s Geological Agency said although the continuous eruption episode has ended, instrumental monitoring in the period of September 6-7, 2026 still recorded high seismic dynamics. There were three eruption earthquakes, nine gust earthquakes, 93 low frequency earthquakes, 98 hybrid/multi-phase earthquakes, four continuous tremor earthquakes, and one shallow volcanic earthquake.
“The main potential danger is incandescent rock ejections and heavy ash rain, as well as the potential for lava flows if continuous eruptions occur again,” Geological Agency head Lana Saria said in a statement.
Residents in coastal areas of Banten and Lampung have been advised to remain calm, follow local disaster-management guidance and avoid the exclusion zone within three kilometres of the volcano’s centre. Authorities have also urged people affected by ashfall to limit time outdoors or wear masks to reduce respiratory risks.
Passengers due to travel to or from Jakarta and other affected Indonesian airports have been urged to monitor airline and airport channels for the latest flight-status information.
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Lead image / Kementerian ESDM
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