Jakarta's Airport Shut Down as Anak Krakatau Ash Spreads
Volcanic ash from Mount Anak Krakatau forced the closure of Soekarno-Hatta International Airport for most of the morning and early afternoon of September 6, 2026, grounding or delaying dozens of flights and affecting nearly 23,000 passengers before authorities extended the shutdown a second time. The closure, initially set to lift at 9:30 a.m. local time, was pushed back a further four hours to 1:30 p.m. after ash continued to drift over the airport.
Scale of the Disruption
By the time of the first closure period alone, 209 flight movements had been affected at Soekarno-Hatta. Three other airports in the greater Jakarta region also shut temporarily: Radin Inten II in Lampung and Halim Perdanakusuma in Jakarta both closed until 10:00 a.m., while Budiarto Airport in Tangerang was closed until 9:30 a.m.
International routes took a significant hit. Among the 16 international flights cancelled during the initial closure period, services to and from Singapore were the most affected, accounting for 11 flight movements. Routes connecting Jakarta to Hong Kong, Sydney, Seoul, Doha, Amsterdam, and Kuala Lumpur were also disrupted, with a further seven flights delayed and five rescheduled.
Authorities cautioned that cascading effects on aircraft rotations, fleet availability, and terminal capacity were likely to extend disruptions beyond the immediate closure window. Travelers were strongly advised to check their flight status directly with their airline before heading to any airport.
The Volcano and Its Context
Anak Krakatau sits in the Sunda Strait between Java and Sumatra and began erupting in the late hours of September 4. Indonesia's meteorological agency BMKG detected ash at roughly 6,000 meters on the Java side and as high as 15,000 meters over Sumatra and parts of Banten province. The volcano has a well-documented history: a partial collapse during an eruption in December 2018 triggered a tsunami that killed more than 400 people along the coasts of both islands. Authorities stated there was no imminent tsunami threat from the current activity.
Beyond aviation, Banten port authorities barred vessels from approaching within 3 kilometers of the active crater and urged ships transiting the Sunda Strait to stay alert to ash fall and ejected material. In Banten and Lampung provinces, some schools suspended classes, fishermen cancelled trips, and residents reported eye irritation from ashfall. Indonesia's disaster management agency BNPB recommended that affected residents wear masks and eye protection, limit outdoor exposure, cover water sources, and drive cautiously given reduced visibility.
Why It Matters for Hosts
Independent accommodation operators in Jakarta and the surrounding region should treat volcanic activity near the Sunda Strait as a recurring operational variable, not a one-off event. When Anak Krakatau becomes active, airport closures can materialize with very little lead time and extend unpredictably. Hosts who communicate proactively with incoming guests about flight status, offer flexible check-in windows, and keep a short list of reliable local transport contacts will be far better positioned to manage the guest experience during disruptions. It is also worth reviewing your cancellation and rebooking policies now, before the next event, so guests understand their options without confusion in the middle of a crisis.
The details in this post were first reported by The Straits Times on September 6, 2026. This analysis was published by the Qontaktly travel blog.
First reported by straitstimes.com.