Eight Airports Shut as Volcanic Ash Spreads Across Java and Sumatra
Volcanic ash from Mount Anak Krakatau has forced the closure of eight Indonesian airports, including the two primary gateways serving Jakarta, after the volcano began erupting on the evening of September 4, 2026. As of the morning of September 7, Indonesia's transport minister confirmed the closures remained in effect at least until 8:59 a.m. local time, with no firm end date in sight.
Transport Minister Dudy Purwagandhi stated plainly that the situation could not be resolved on a fixed timeline. "We cannot ascertain when this will end due to the dynamic weather," he said in an official statement. Beyond the two Jakarta-area airports, facilities serving the nearby provinces of Lampung and West Java were also among those suspended.
Scale of the Disruption
The transport ministry reported that 170,000 people have been affected by flight cancellations since the closures began. Passengers at airports across the region found themselves rescheduling travel or waiting indefinitely for updates. The Straits Times, which first reported these details, spoke with travelers caught in the disruption. One passenger, a businesswoman named Henny Yensan, rescheduled her flight to September 8 and noted that fellow travelers, while disappointed, understood the situation was beyond anyone's control. A business traveler stranded in Lombok described searching for alternative routes back to Jakarta, only to find those options cancelled as well.
Meteorological agency BMKG reported ash columns reaching 6,000 meters on the Java side of the volcano and as high as 15,000 meters on the Sumatra side, with ash also reaching parts of Banten province. The city of Bandar Lampung, at the southern tip of Sumatra, saw ash blanket parked cars and streets.
Health and Safety Measures
Indonesia's disaster agency advised residents to wear masks when going outdoors. Schools in Jakarta and Lampung shifted to remote learning to reduce health risks for students, according to state news agency Antara. Residents in affected areas expressed concern about respiratory health, with ash coverage raising fears of lung irritation.
Shipping through the Sunda Strait, which separates Java and Sumatra and where Anak Krakatau sits, was also affected. Port authorities prohibited vessels from entering a 3-kilometer exclusion zone around the volcano and called for heightened navigational vigilance.
Geology agency head Lana Saria noted that seismic activity indicated movement of volcanic fluids within the system but stressed that the timing and scale of future eruptions could not be predicted precisely. She also confirmed that the current eruption series does not carry tsunami risk at this time, an important reassurance given that a 2018 collapse of part of the volcano triggered a tsunami that killed 429 people.
Historical Context
Anak Krakatau, whose name translates as "child of Krakatoa," emerged from the sea in the caldera left by the catastrophic 1883 eruption of Mount Krakatoa, an event that killed an estimated 35,000 people and remains one of the deadliest volcanic disasters in recorded history. The volcano has been sporadically active since its formation and sits within Indonesia's position on the Pacific Ring of Fire, a zone of intense volcanic and seismic activity.
Why It Matters for Hosts
Independent accommodation operators in Jakarta, Lampung, West Java, and Banten should prepare for a surge in last-minute booking changes, extended stays, and new arrivals seeking refuge from disrupted itineraries. Keeping cancellation and rebooking policies clearly communicated, stocking up on masks to offer guests, and monitoring BMKG and official transport ministry updates directly will help operators respond quickly. Guests stranded by cancellations may need practical guidance on local health precautions and transport alternatives, making proactive communication a real differentiator right now.
Details in this post were first reported by The Straits Times.
First reported by straitstimes.com.