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JAKARTA — Jakarta’s two principal airports will remain closed until an estimated 18:00 WIB on Monday after volcanic ash from Mount Anak Krakatau continued to affect the surrounding airspace, extending disruption to commercial airlines, private jet charters and business aviation.
AirNav Indonesia extended the temporary closure of Soekarno-Hatta International Airport (CGK/WIII) under NOTAM A3373/26, replacing A3368/26. Halim Perdanakusuma International Airport (HLP/WIHH), Jakarta’s primary business aviation airport, remains closed under NOTAM A3372/26, which replaced A3369/26.
Both closures are currently expected to remain in effect until 18:00 WIB on 7 September. The published time is an estimate rather than a guaranteed reopening, and further extensions remain possible if ash continues to be detected in the airport environment or surrounding airspace. AirNav’s latest notice was reported by MetroTV.
The latest extension follows a series of revised operating deadlines since the disruption began on 6 September. Halim initially closed at approximately 07:20 WIB, with its suspension later extended to 14:00 under NOTAM A3347/26. Subsequent assessments kept the airport unavailable through Sunday evening, overnight and into Monday.
The evolving timeline illustrates the difficulty of forecasting airport availability during a volcanic-ash event. Wind direction, ash concentration and conditions at different flight levels can change quickly, leaving authorities unable to provide a firm reopening schedule.
Indonesia’s Ministry of Transportation had previously extended closures at eight airports until 09:00 WIB on Monday. Those affected included Halim, Soekarno-Hatta, Radin Inten II, Husein Sastranegara, Budiarto, Pondok Cabe, Taufik Kiemas and Atung Bungsu. The ministry said airports would reopen only when operating conditions could be confirmed as safe. The ministry’s official statement also noted that paper tests were being conducted at affected airports every 30 minutes.
Private Jets are not exempt from the closure
The restrictions apply to flight operations generally. No exemption has been published specifically for private jets, charter flights, business aircraft or general aviation.
Private aircraft cannot operate from Halim while the airport is closed unless a revised NOTAM or explicit approval from the relevant authority permits the movement. Operators must also consider any volcanic-ash advisories and airspace restrictions affecting the wider route, rather than relying solely on the status of the departure or destination airport.
This is particularly significant for Halim. Its proximity to central Jakarta and established business aviation infrastructure normally make it the preferred airport for many private jet charter movements. With Halim unavailable, operators face limited options close to the capital.
Pondok Cabe and Budiarto, which might be considered for certain domestic or specialist operations, have also been affected by the closures. Soekarno-Hatta, the region’s largest international gateway, remains subject to the same ash-related restrictions.
A charter flight can therefore require more than a simple change of airport. Any alternative must be assessed for runway suitability, customs and immigration capability, aircraft parking, fuel, ground handling and current airspace conditions.
Alternative airports may require substantial rerouting
Indonesia’s transport ministry has identified Kertajati, Juanda, Yogyakarta International Airport and airports serving Semarang and Solo as possible alternatives for affected airline operations.
Some may also be considered for private charter missions, although their suitability will depend on the aircraft, route and purpose of travel. None offers a direct operational replacement for Halim without additional planning.
Kertajati may be practical for certain missions but requires a lengthy ground transfer to Jakarta. Airports farther east can preserve access to Indonesia while Jakarta’s airports are unavailable, although they may involve a domestic connection, aircraft repositioning or a significant change to the passenger’s itinerary.
International charter flights introduce further considerations. An airport that can physically accommodate an aircraft may not have the required customs, immigration, handling or parking arrangements available at short notice.
Alternative routing can also change the charter price. Repositioning sectors, extended crew hours, overnight parking and additional ground transport can all add to the cost. A revised quotation should therefore identify the operational change and its pricing implications clearly.
Disruption may continue after reopening
An airport reopening does not necessarily mean that normal operations resume immediately.
Aircraft exposed to volcanic ash on the ground may require inspection before returning to service. Indonesia’s transport ministry has said operators should check aircraft, including engines, before operating after the closure.
Parking congestion, displaced aircraft, revised slots and crew duty limitations could also constrain capacity. Private jet availability may remain tighter than usual as operators recover aircraft and crews from disrupted schedules.
BMKG, Indonesia’s meteorological agency, previously identified separate ash concentrations moving in different directions at different altitudes. Ash at lower levels was reported moving across parts of Jakarta, Banten and West Java, while higher-level material extended across western areas and the Indian Ocean. BMKG said it was maintaining continuous monitoring and issuing aviation warnings as conditions developed.
Indonesia’s volcanology authorities said the continuous eruptive episode had ended early on 6 September, but Anak Krakatau remained at Level III, or Siaga. Further eruptive activity was still considered possible, meaning aviation conditions could remain changeable even without another prolonged eruption. The official geological update advised continued monitoring.
Passengers booked on private flights to or from Jakarta should not travel to the airport until their charter broker or aircraft operator has reconfirmed the flight, handling acceptance and departure time.
Jetbay is monitoring the operational position and can assess aircraft availability, delayed departures and viable alternative airports for affected private jet charter itineraries. All movements remain subject to current NOTAMs, operator approval and the latest assessment from Indonesian aviation authorities.