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Jakarta’s Soekarno-Hatta International Airport was temporarily closed on Sunday, September 6, after volcanic ash from the erupting Anak Krakatau volcano was detected in the airport’s airspace, triggering widespread flight disruptions across Indonesia and the region.
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Temporary shutdown at Indonesia’s busiest air gateway
Publicly available information from Indonesian aviation and transport agencies shows that operations at Soekarno-Hatta, the country’s main international gateway serving the capital Jakarta, were halted for several hours on Sunday once tests confirmed the presence of volcanic ash in the vicinity of the runways and flight paths.
A notice to airmen issued for Soekarno-Hatta indicated a temporary closure period on September 6 following the detection of ash linked to Anak Krakatau’s ongoing eruption. National news agency reports describe a suspension of takeoffs and landings beginning in the early hours of Sunday and extended at various points during the day as authorities assessed the evolving ash cloud.
State airport operator data cited in local coverage notes that more than 200 scheduled movements at Soekarno-Hatta alone were cancelled during the morning closure window, with further delays and rescheduling through the afternoon as airlines worked to rebuild their operations once limited services were allowed to resume.
Malaysian and regional media reports indicate that approximately 22,000 to 23,000 passengers at Soekarno-Hatta were directly affected by the disruption, ranging from domestic travelers on short-haul routes across Java and Sumatra to international passengers flying to hubs such as Singapore and Kuala Lumpur.
Ash from Anak Krakatau triggers wider airport suspensions
The disruption in Jakarta formed part of a broader aviation impact as Anak Krakatau’s eruption sent an ash plume across parts of western Indonesia. Analyses by Indonesia’s meteorological and volcanology agencies, reflected in government statements, showed volcanic ash drifting over the Sunda Strait toward heavily populated areas including Greater Jakarta, Banten, Lampung and parts of West Java.
Transportation ministry updates summarized by national media indicate that at least six to eight airports were placed under temporary suspension at different points on Sunday as a precautionary measure. These included Soekarno-Hatta and Halim Perdanakusuma in the Jakarta area, Radin Inten II in Lampung, Husein Sastranegara in Bandung, and several smaller airports in Banten, South Tangerang and southern Sumatra.
The suspension orders were framed as short-term safety steps while aviation meteorology teams tracked the ash cloud’s movement and density. Authorities emphasized that the restrictions were focused on protecting aircraft engines and critical systems from fine volcanic particles, which can cause serious damage and sudden power loss if ingested during flight.
Regional press coverage highlights that the ash cloud also prompted rerouting of some international services over the Sunda Strait and Java Sea, with airlines adjusting flight paths to avoid the most affected airspace corridors even where airports remained open.
Hundreds of flights disrupted and passengers stranded
Figures released through Indonesia’s airport operator and transport ministry, as reported by local and international outlets, indicate that more than 200 flights at Soekarno-Hatta were cancelled during the initial closure window between roughly 01:30 and 09:30 local time. Additional cancellations and knock-on delays later in the day pushed the number of affected movements at the Jakarta hub significantly higher.
Broader national updates cited by Indonesian media show that over 1,500 flight movements were disrupted across all affected airports, with up to 170,000 passengers facing delays, cancellations or diversions as the ash cloud lingered over parts of Java and Sumatra. Many travelers were left waiting inside terminals or advised to postpone trips until airlines could safely restore operations.
Airlines with large networks into Jakarta, including regional low cost carriers, published advisories confirming that all flights to and from the Indonesian capital were either cancelled or rescheduled during the closure period. Several carriers also noted adjustments on routes that pass near the ash-affected area, reflecting the widespread reach of the plume in regional airspace.
Online flight-tracking data and traveler accounts shared on social platforms documented long queues at check in, packed waiting areas and aircraft parked on aprons as crews awaited clearance to operate. Airport management information reported by local outlets indicated that recovery measures would be phased, depending on updated ash monitoring and the availability of slots once restrictions eased.
Safety protocols and monitoring behind the closure decision
The temporary shutdown at Soekarno-Hatta followed established international procedures for managing volcanic ash hazards. Publicly available guidance from Indonesia’s aviation authorities and global safety bodies stresses that even relatively thin ash concentrations can damage aircraft engines, sensors and windscreens, particularly during takeoff and landing when power settings are high.
Reports from Jakarta describe the use of “paper tests” and other surface checks at Soekarno-Hatta to detect traces of ash on the airfield, combined with satellite imagery, pilot observations and volcanic ash advisories from regional centers. Once contamination was confirmed in the airport environment, flight operations were suspended until conditions improved.
Indonesia’s disaster management and volcanology agencies have been closely watching Anak Krakatau in recent months, with official bulletins describing elevated activity since mid year and a series of eruptions sending ash columns thousands of meters into the sky. The latest sequence, beginning late Friday and intensifying into the weekend, produced sustained ash emissions that drifted toward key air corridors serving Jakarta and neighboring provinces.
Government updates underline that safety considerations outweigh scheduling pressures when ash is present, even at the cost of large scale travel disruption. The guidance urges travelers to follow airline notifications and avoid heading to affected airports until flight status information confirms that operations have resumed.
What travelers should know as operations gradually resume
By late Sunday, some Indonesian media reports indicated that authorities were evaluating the possibility of reopening Soekarno-Hatta and other affected airports in stages if monitoring showed a reduction in ash concentration. However, the overall situation remained fluid, with the potential for further bursts of activity at Anak Krakatau and for closures to be extended or reimposed if conditions worsened again.
Airlines have advised passengers booked to and from Jakarta and other impacted airports to check flight status through official websites and mobile applications rather than relying on older itineraries. Many carriers are offering rebooking options or travel credits for those whose journeys were cancelled because of the ash-related restrictions.
Travel industry analysts note that the disruption comes during a generally busy period for domestic and regional travel in Indonesia, amplifying the impact on tourism and business trips. Hotels near major hubs such as Soekarno-Hatta have reported higher than usual demand from stranded passengers awaiting new departures.
For travelers planning upcoming trips through Jakarta, current coverage suggests that flexibility will be important in the short term. Monitoring of Anak Krakatau continues, and further operational adjustments remain possible if ash again drifts into critical airspace, even as aviation and disaster management agencies work to restore normal connectivity as quickly and safely as conditions allow.
The Guardian: Volcanic ash cloud halts flights at Indonesia’s main international airport
Al Jazeera: Anak Krakatau eruption shutters Indonesian airports
ANTARA: Indonesia suspends airports amid Anak Krakatau ash spreads
Bernama: Anak Krakatau eruption temporarily closes Soekarno-Hatta Airport
Indonesian Transport Ministry: Update on temporary closure of eight airports