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Indonesia has extended the closure of Jakarta’s Soekarno Hatta International Airport until 6 p.m. local time on Sunday, 6 September 2026, as ash from Mount Anak Krakatau continues to drift across key air corridors and disrupt air travel across western parts of the country.
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Closure at Indonesia’s main gateway widens disruption
Publicly available aviation notices indicate that operations at Soekarno Hatta International Airport, the country’s main international hub serving Jakarta, were first suspended in the early hours of Sunday following paper-test detections of volcanic ash on the airfield. Initial notices to air missions (NOTAMs) set a closure window from around 1:30 a.m. local time, with subsequent updates extending the shutdown through the morning and early afternoon as ash contamination persisted on runways and taxiways.
Updated information from Indonesia’s Ministry of Transportation shows that the closure at Soekarno Hatta has since been extended again, with an operational stop now in place until at least 6 p.m. Western Indonesia Time. The extended shutdown reflects evolving ash-dispersion assessments linked to the ongoing eruption of Mount Anak Krakatau in the Sunda Strait, situated between the islands of Java and Sumatra.
Data compiled by the Directorate General of Civil Aviation (DGCA) for the 24-hour period up to Sunday late afternoon shows that several hundred flight movements have been affected at Soekarno Hatta alone, including both domestic and international services. Routes connecting Jakarta with Singapore, Hong Kong, Sydney, Seoul, Doha, Amsterdam and Kuala Lumpur are among those listed in monitoring updates as experiencing cancellations, delays or diversions.
Air traffic flow across Indonesia’s western airspace is being reconfigured to keep aircraft clear of ash-contaminated zones, leading to longer routings and congestion at unaffected airports. National media coverage describes scenes of long queues at airline service counters in Jakarta as passengers attempt to rebook, reroute or obtain refunds in line with each carrier’s disruption policies.
Multiple airports affected as ash cloud spreads
Monitoring summaries from Indonesia’s transport and disaster management agencies indicate that Soekarno Hatta is part of a wider network of airports affected by the Anak Krakatau eruption. Earlier updates on Sunday listed at least four airports experiencing full or partial closures due to ash contamination: Soekarno Hatta, Halim Perdanakusuma in Jakarta, Radin Inten II in Lampung and Budiarto in Curug.
Subsequent information released later in the day points to a further expansion in the number of affected facilities, with eight airports noted as subject to temporary operational suspensions by Sunday evening. Several of these airports have also extended their closure windows into the night of 6 September and the morning of 7 September, depending on local ash-test results and visibility conditions.
National disaster management bulletins describe Anak Krakatau’s current eruptive phase as a continuation of elevated activity that has been observed since July 2026, with continuous tremor and ash emissions recorded during the first week of September. The prevailing winds over the Sunda Strait have carried the volcanic ash plume toward the densely trafficked airspace above Java’s northern coastline, directly impacting approach and departure paths for Jakarta’s airports.
International aviation safety guidance treats volcanic ash as a serious hazard, since even low concentrations can damage jet engines and aircraft surfaces. The Indonesian authorities have emphasized in public statements that decisions on airport closures and airspace restrictions are based on ash-dispersion modeling, real-time meteorological data and ground sampling, combined with input from the national meteorological agency.
Passenger impact: cancellations, diversions and rolling delays
Operational monitoring figures published over the weekend show that tens of thousands of passengers have already been affected by the Anak Krakatau-related disruptions. An early-morning closure period at Soekarno Hatta on Sunday was initially reported to have disrupted more than 200 flight movements and around 22,800 travelers, with numbers rising steadily as closure periods were extended and additional airports joined the list of affected facilities.
Reports from Jakarta’s main terminals describe large numbers of aircraft parked on aprons in a remain-overnight status while they await clearance to operate. DGCA data cited in domestic media notes that more than 160 aircraft were positioned at various terminals and cargo aprons during the shutdown, with airport operators conducting repeated inspections to ensure that engines, fuselages and critical systems stayed free of ash accumulation.
Airlines have been updating schedules through their digital channels, offering rebooking options and, in some cases, rerouting passengers through alternative hubs where seats are available. Travelers connecting via major regional gateways such as Singapore and Kuala Lumpur are reporting missed or heavily delayed connections, particularly on long-haul itineraries that rely on Jakarta as an origin or destination point.
Industry observers caution that even after Soekarno Hatta reopens, disruption could continue in the form of rolling delays as airlines work through aircraft and crew rotations that have been affected since Friday, when Anak Krakatau’s elevated activity began to trigger more frequent ash emissions. The possibility of further short-notice ground stops remains, depending on how ash clouds move in and around the capital region’s airspace.
What travelers should know if flying to or from Indonesia
Travel organizations following the Anak Krakatau situation advise that anyone scheduled to fly to or from Jakarta, particularly through Soekarno Hatta, should monitor flight status closely on airline apps and official airport channels. With the airport closure now formally extended to 6 p.m. local time, same-day departures and arrivals remain uncertain and subject to last-minute changes as updated NOTAMs are issued.
Passengers already in Jakarta are being urged in public travel alerts to allow additional time if they need to reach the airport once operations resume, since backlogs at check-in, security and immigration are likely after a prolonged closure. Those with non-essential or discretionary trips may wish to consider postponing travel until conditions stabilize and airlines are able to operate more predictable schedules.
For travelers transiting the region without Jakarta as a final destination, rerouting via alternative Southeast Asian hubs is emerging as a common strategy. Flight-search data captured by local media shows increased interest in itineraries via Singapore, Kuala Lumpur and Bangkok as passengers seek to avoid potential knock-on delays in western Indonesia. However, availability on popular routes is tightening as airlines re-accommodate disrupted passengers.
Insurance providers typically treat volcanic ash events as extraordinary circumstances, and coverage terms vary by policy. Travelers are being encouraged by consumer advisories to review their policy wording carefully and retain documentation of cancellations or delays that may be needed for future claims.
Outlook for Anak Krakatau activity and aviation
Volcanology briefings shared by Indonesia’s disaster management agency explain that Anak Krakatau has gone through several cycles of heightened activity in recent years, with the current phase characterized by continuous tremor, intermittent eruptions and ash plumes that can reach commercial flight levels. The exact duration and evolution of the present episode remain uncertain, which complicates planning for airlines and airports.
Aviation meteorology charts and satellite-based ash-dispersion products are being used to map ash concentrations at different flight levels over western Indonesia. These tools help determine where aircraft can operate safely and when airspace must be temporarily closed. As long as Anak Krakatau continues to emit ash to altitudes used by commercial jets, periodic restrictions on routes and airport operations in the region are likely to persist.
For now, published information suggests that operational decisions at Soekarno Hatta and other affected airports will continue to be made in several-hour blocks, with frequent reassessment based on the latest monitoring data. Travelers can expect a series of incremental updates to closure times, such as the extension to 6 p.m. local time now in effect, rather than a single definitive reopening time.
Industry analysts note that Indonesia’s experience with previous ash events has led to more structured coordination between aviation, meteorological and disaster-response agencies. This framework is being tested again by Anak Krakatau, and the way it manages the current disruption will be closely watched by regional aviation stakeholders as they refine contingency planning for future volcanic episodes.
BNPB – Update aktivitas Gunung Anak Krakatau dan dampaknya pada bandara
AP News – Anak Krakatau eruption disrupts Indonesian air travel