Eruption activity from Mount Anak Krakatau has disrupted flight operations at Soekarno-Hatta International Airport (CGK). The airport was temporarily closed in the early hours of Sunday, September 6, 2026, after indications of volcanic ash dispersal were detected.
The Directorate General of Civil Aviation at the Ministry of Transportation continues to closely monitor and coordinate with airline operators, airport management, flight navigation services, and the Meteorology, Climatology, and Geophysics Agency (BMKG).
Airport Closure Timeline
Based on NOTAM No. A3341/26, Soekarno-Hatta International Airport was temporarily closed from 1:30 AM to 5:30 AM WIB on Sunday, September 6.
“The closure was carried out as a follow-up to a paper test conducted between 12:35 AM and 1:05 AM WIB. The test results indicated the presence of volcanic ash dispersal in the area of Soekarno-Hatta International Airport,” said Director General of Civil Aviation Lukman F. Laisa.
33 Flights Affected
The impact of this eruption activity has already been felt across a number of flights. Based on monitoring data as of 10:00 PM WIB on September 5, 2026, a total of 33 flights at Soekarno-Hatta International Airport were affected.
For international flights, there were 16 cancellations, 7 delays, and 5 reschedulings. Affected routes included flights to and from Singapore (SIN), Hong Kong (HKG), Sydney (SYD), Seoul/Incheon (ICN), Doha (DOH), Amsterdam (AMS), and Kuala Lumpur (KUL).
For domestic flights, there were 4 cancellations and 1 diverted flight. Affected routes included flights to and from Lampung (TKG), as well as flights bound for Denpasar (DPS) and Surabaya (SUB).
Watching for Cascading Impact
The Directorate General of Civil Aviation is also paying close attention to restoring flight schedules on Sunday, September 6. This is being done to anticipate potential cascading impacts resulting from the disruption to flight operations.
These effects could influence aircraft rotation, fleet availability, subsequent flight schedules, and even airport terminal capacity.
Safety remains the top priority in every flight operations decision. Because of this, airlines may make dynamic schedule adjustments based on evolving conditions on the ground.
The Ministry of Transportation says it continues to monitor developments together with all relevant parties.
Advice for Travelers
The public and prospective passengers planning to travel through Soekarno-Hatta International Airport are advised to continue monitoring the latest flight status updates from their respective airlines.
Passengers are also asked to plan their travel schedules with the possibility of flight changes in mind.
“The Directorate General of Civil Aviation will continue monitoring the situation together with airline operators, airport management, flight navigation services, BMKG, and other relevant parties,” Lukman said.
