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Jakarta’s Soekarno-Hatta International Airport has extended its temporary closure after ash from Indonesia’s Anak Krakatau volcano continued to drift across key flight paths, prolonging widespread disruption for travelers in and out of the capital.
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Closure at Jakarta’s main gateway stretches into second day
Publicly available information from Indonesia’s air transport authorities shows that operations at Soekarno-Hatta International Airport, the country’s busiest hub, remain suspended on Monday, September 7, following an eruption of Anak Krakatau over the weekend. Notices to air missions (NOTAMs) indicate repeated extensions of the shutdown as volcanic ash continues to affect airspace over the Jakarta region.
The closure began on Sunday morning local time, when ash clouds were detected in the vicinity of the airport and along approach routes. Initial advisories suggested a limited suspension, but subsequent updates prolonged the shutdown through at least Monday morning as monitoring data showed lingering ash at flight levels used by commercial jets.
Reports compiled by Indonesia’s Transportation Ministry and international news agencies indicate that the disruption has cascaded across airline networks, with aircraft and crews out of position and knock-on delays at other airports in the region. Soekarno-Hatta typically handles more than 1,000 movements per day, magnifying the impact of any prolonged closure on domestic and international connectivity.
Jakarta’s secondary airport, Halim Perdanakusuma, which serves a mix of domestic and government flights, is also affected by ash-related restrictions, limiting options for rerouting traffic within the metropolitan area.
Multiple airports affected and hundreds of flights canceled
Government statements and local media coverage indicate that eight Indonesian airports have been affected by Anak Krakatau’s ash plume to varying degrees, with several experiencing full temporary closures. Alongside Soekarno-Hatta and Halim Perdanakusuma in Greater Jakarta, airports in Lampung province at the southern tip of Sumatra and in parts of West Java have reported shutdowns or reduced operations.
Data released by Indonesia’s Transport Ministry and summarized by regional news outlets suggest that at least several hundred flights were canceled or diverted on Sunday alone, with disruption continuing into Monday. One official update cited more than 200 affected flights and tens of thousands of passengers at Soekarno-Hatta, while national tallies across all impacted airports run far higher.
Travelers have reported crowded terminal halls, long queues at airline desks and difficulty rebooking as carriers attempt to consolidate passengers once capacity is restored. With aircraft unable to depart or arrive at scheduled times, some airlines have repositioned flights to alternative airports where conditions permit, adding to the logistical complexity of the response.
Published aviation notices emphasize that the closures apply to both departures and arrivals, and that only limited technical or emergency movements may be permitted under strict conditions while ash remains in the vicinity.
Safety considerations drive extended shutdown
Technical advisories from Indonesia’s meteorological and volcanology agencies underscore the primary concern behind the extended airport closures: the risk volcanic ash poses to jet engines, avionics and windshields. Even relatively thin concentrations of ash at cruising altitude can cause serious damage, including engine flameouts and loss of instrument visibility.
Monitoring networks around Anak Krakatau detected continuous or near-continuous eruptive activity through the weekend, with ash plumes reaching several kilometers into the atmosphere and drifting under changing wind patterns over the densely populated western Java region and the Sunda Strait. Mapping from volcanic ash advisory centers indicates shifting but persistent contamination of key air corridors serving Jakarta.
Indonesia’s Transport Ministry and aviation regulators have repeatedly stated through public channels that airport reopening decisions will be based on real-time assessments of ash concentration and dispersion, rather than on fixed timelines. Forecast models and in-situ observations are being used to determine when flight paths into and out of affected airports are considered clear enough to resume normal operations.
Given the dynamic nature of volcanic eruptions and local weather, authorities caution that NOTAMs and operational decisions may change at short notice, leaving airlines and passengers to contend with a highly fluid situation over the coming days.
Travelers urged to monitor airline guidance and consider alternatives
Airlines serving Jakarta have issued travel advisories through their websites and social media channels, urging passengers not to proceed to the airport unless their flight status shows as operating. Many carriers are offering rebooking options or travel waivers for tickets to and from Jakarta and other affected Indonesian airports for travel dates around September 6 and 7.
Publicly available guidance from Indonesia’s Transportation Ministry and airport operators recommends that travelers maintain close contact with their airlines, which retain responsibility for specific flight decisions and re-accommodation. Passengers with time-sensitive onward connections, including long-haul international itineraries, are being advised to explore alternative routings via unaffected hubs where feasible.
Within Indonesia, some travelers have shifted to rail or road services between major cities on Java while waiting for flight operations to normalize. However, congestion on key routes and the limited capacity of alternative airports mean that many international passengers remain dependent on the reopening of Soekarno-Hatta for onward travel.
For those currently in Jakarta or other affected cities, local travel forums and embassy advisories recommend allowing additional time for any rebooked flights once operations resume, given the likelihood of backlogs and schedule changes as airlines clear stranded passengers.
Anak Krakatau’s renewed activity and regional aviation risk
Anak Krakatau, located in the Sunda Strait between Java and Sumatra, is one of Indonesia’s most closely watched volcanoes. It formed in the caldera left by the catastrophic 1883 Krakatau eruption and has undergone several active phases in recent decades, including a 2018 event that generated a deadly tsunami around the strait.
Indonesia’s Center for Volcanology and Geological Hazard Mitigation has reported elevated activity at Anak Krakatau since mid-2026, with intensified eruptions recorded in early September. The latest explosive episode sent ash and volcanic gases high into the atmosphere, coinciding with weekend travel peaks at Jakarta’s airports.
Indonesia sits on the Pacific “Ring of Fire” and regularly faces the challenge of balancing intense aviation demand with the hazards posed by active volcanoes. Previous eruptions at other peaks, such as Mount Merapi and Mount Raung, have also triggered airport closures and diversions affecting domestic and international traffic.
Analysts note that the Anak Krakatau episode again highlights the vulnerability of major air hubs to volcanic ash, particularly where alternative gateways have limited capacity. For travelers planning itineraries through western Indonesia in the near term, industry guidance emphasizes the importance of flexible bookings, real-time monitoring of flight information and an awareness that conditions can evolve rapidly when volcanic activity intersects with busy air routes.
Jakarta Post: Jakarta international airport extends closure after Anak Krakatau eruption
Indonesia Ministry of Transportation: Extended closure of eight airports
Al Jazeera: Thousands stranded as Anak Krakatau eruption shutters Indonesian airports
AP News: Indonesia keeps several airports closed though volcanic eruption is easing