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Indonesia has reopened five airports, including the main gateway serving Jakarta, after ash from Mount Anak Krakatau forced widespread airspace closures that halted thousands of flights across the archipelago over the past two days.
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Key Airports Resume Operations After Safety Review
Publicly available information from Indonesia’s Transport Ministry indicates that operational closures at a cluster of airports affected by volcanic ash were lifted in the early hours of Tuesday, 8 September 2026. The decision followed assessments that conditions in the surrounding airspace and on airport surfaces had improved sufficiently for flights to resume.
Reports from Jakarta identify Soekarno Hatta International Airport in Banten, Halim Perdanakusuma Airport in Jakarta, and Husein Sastranegara Airport in Bandung among the facilities that were declared active again from 00:01 local time on Tuesday. Two secondary hubs in Banten Province, Budiarto Curug Airport and Pondok Cabe Airport, were cleared to reopen shortly afterward in the early morning, according to official notices and ministry statements published online.
The restart of operations marks a turning point in an episode that had seen air traffic halted across large parts of western Java and southern Sumatra since Saturday, 5 September, when ash from Anak Krakatau’s eruption spread into key flight corridors. Earlier updates from the ministry and state news agencies indicated that up to eight airports were affected at the peak of the disruption, with closures repeatedly extended while volcanic ash advisories remained in force.
International and regional media reports note that the shutdowns forced cancellations, delays, and diversions for close to 3,000 flights, impacting more than 300,000 passengers on domestic and international routes serving Indonesia’s most densely populated region.
From Sudden Closures To Gradual Reopening
Initial suspensions of flight operations began on Sunday, 6 September, when the Transport Ministry issued notices temporarily closing a series of airports in the Greater Jakarta and Lampung areas as volcanic ash from Anak Krakatau drifted across the Sunda Strait. Public documents describe a phased escalation in restrictions as ash clouds evolved, with closures at Soekarno Hatta, Halim Perdanakusuma, Radin Inten II in Lampung, Pondok Cabe, and Budiarto among the earliest measures.
As ash continued to spread and forecasts remained uncertain, national authorities extended the shutdowns several times through late Monday. Ministry statements made public on 7 September described the move as a precaution to safeguard aircraft, runways, and navigation systems from abrasion and contamination caused by fine volcanic particles.
During this period, some relief came through the reopening of smaller airports outside the heaviest ash zones. State news agency coverage notes that Atung Bungsu Airport in South Sumatra was able to resume operations earlier, reflecting localized improvements in conditions. Nevertheless, with the principal Jakarta hub still closed, much of the country’s domestic and international traffic remained heavily constrained until the early hours of Tuesday.
The reopening of the five key airports represents a significant easing of those constraints, although aviation advisories indicate that operators are continuing to monitor airspace closely for any renewed changes in ash dispersion.
Alternative Airports And Passenger Diversions
To keep people and goods moving while primary hubs were shut, Indonesia relied on a network of alternative airports across Java. According to coverage from national news outlets, the government extended operating hours at several facilities including Kertajati in Majalengka, Ahmad Yani in Semarang, Juanda in Surabaya, Yogyakarta International Airport, and Adi Soemarmo in Solo, many of which shifted to 24 hour operations during the disruption.
This strategy allowed airlines to reroute certain services away from the ash affected corridors between Java and Sumatra. Travelers seeking to reach Jakarta and nearby cities were encouraged via public information channels to consider itineraries connecting through these alternative hubs, often combining onward travel by rail or road to complete their journeys.
Regional media and airline updates highlight that some international flights diverted to airports outside Indonesia while the Jakarta area remained closed, adding complexity to travel plans across Southeast Asia. However, once the main gateway and its satellite airports reopened early Tuesday, airlines began restoring regular schedules while working through a backlog of stranded and rebooked passengers.
Publicly shared guidance from airport operators advised travelers to check their flight status frequently and maintain close contact with airlines, as the process of normalizing operations is expected to take time even after runway activities resume.
Ongoing Monitoring Of Anak Krakatau’s Activity
The Anak Krakatau eruption that triggered the aviation disruption began late last week, with Indonesia’s geological and disaster management agencies reporting sustained eruptive activity and significant ash emissions through the weekend. Technical bulletins made available by the country’s disaster management agency describe a series of eruptions and prolonged tremor periods starting on Saturday, 5 September, building on elevated activity that had been observed since July.
In line with international protocols for volcanic ash hazards in aviation, Indonesian authorities coordinated with the Volcanic Ash Advisory Centre in Darwin, Australia, alongside national meteorological and geological agencies. Public reports indicate that decisions on closing and reopening airspace were guided by satellite imagery, ash cloud modeling, and surface observations at airports in the affected region.
While ash concentrations in key flight levels have now decreased sufficiently to allow the reopening of five airports, monitoring of Anak Krakatau continues. Experts cited in official and media reports emphasize that the volcano remains active, and that further eruptions or changes in wind patterns could again alter ash dispersal and potentially affect flight operations.
Travelers planning to transit through western Java and southern Sumatra in the coming days are being advised, through airline and airport channels, to stay alert to schedule changes and to build flexibility into their itineraries as authorities track the volcano’s behavior and its impact on aviation routes.
What Travelers Should Expect In The Coming Days
With Soekarno Hatta and four other airports now back online, Indonesia’s aviation system is entering a recovery phase. Airlines are expected to prioritize clearing backlogs from the past two days of cancellations and diversions, which may result in crowded terminals, limited short notice availability, and altered departure times even as runways become busier.
Publicly accessible notices from the Transport Ministry and airport operators stress that safety considerations will continue to drive capacity decisions. Crews and ground staff must inspect aircraft that were exposed to ash, while runway and taxiway surfaces require cleaning and additional checks to ensure that no residue compromises braking performance or visibility.
Travel industry observers note that travelers with flexible dates may wish to avoid peak travel periods over the next 24 to 48 hours while operations stabilize. Those with fixed schedules are encouraged in public advisories to reconfirm bookings, arrive earlier than usual at airports, and be prepared for possible gate changes or rerouting as airlines re-balance aircraft and crew positions across their networks.
For now, the reopening of the five airports offers a measure of normality after a weekend of severe disruption, restoring critical connectivity between Indonesia’s political and economic center and the rest of the country as Anak Krakatau continues to be closely watched just offshore.
ANTARA: Indonesia reopens five airports after Krakatau ash disruption
Transport Ministry: Airports affected by Anak Krakatau ash reopen
Bernama: Three Indonesian airports resume operations after ash