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Mount Anak Krakatau Eruption Disrupts Jakarta Flights and Schools

A major eruption beginning late Friday sent ash columns tens of thousands of feet into the air, halting operations at Soekarno-Hatta and affecting communities across Banten and the Sunda Strait.

Qontaktly Editorial·September 6, 2026·3 min read
Key takeaways
  • Mount Anak Krakatau began erupting late Friday, September 5, 2026, sending ash up to 50,000 feet toward Sumatra and Banten.
  • Soekarno-Hatta International Airport temporarily suspended flights on Sunday, disrupting more than 200 domestic and international services.
  • Schools in affected areas closed after residents reported respiratory and eye irritation from heavy ashfall.
  • BNPB confirmed no current tsunami risk but advised the public to wear masks, limit outdoor activity, and cover water sources.
  • Fishermen on the Sunda Strait suspended operations due to low visibility and unsafe conditions near the volcano.

Ash Columns Shut Down Jakarta's Main Airport

A powerful eruption from Mount Anak Krakatau, which began late Friday, September 5, 2026, forced Soekarno-Hatta International Airport to temporarily suspend all flight operations on Sunday. The volcano sent ash plumes rising to 20,000 feet on the Java side and as high as 50,000 feet in the direction of Sumatra and Banten province. More than 200 domestic and international flights faced cancellations or severe delays, with regional carriers including Singapore Airlines among those affected.

The disruption at Jakarta's primary hub rippled outward quickly. Travelers connecting through Soekarno-Hatta to destinations across the archipelago found themselves stranded or rerouted, and the airport's temporary suspension created a backlog that continued to affect schedules well into the day.

Communities Feel the Impact Beyond the Airport

The ashfall reached populated areas around the Sunda Strait, prompting school closures after students and residents reported eye irritation and respiratory discomfort. Local fishermen along the strait canceled their daily trips, citing low visibility, rough conditions, and safety concerns in waters near the volcano.

Indonesia's national disaster mitigation agency, BNPB, urged the public to stay calm and take practical precautions. Agency spokesperson Berton Panjaitan advised people to wear masks and eye protection during ashfall, limit time outdoors, cover water sources, and drive carefully given that volcanic ash significantly reduces road visibility.

No Tsunami Risk Confirmed, but Memories of 2018 Linger

Mount Anak Krakatau occupies a particular place in Indonesia's recent history. Its 2018 flank collapse triggered a deadly tsunami that struck coastal communities in Banten and Lampung with little warning. BNPB confirmed that the current eruption carries no imminent tsunami risk, a reassurance the agency was clearly aware many people would need. Still, the event is a reminder of how quickly conditions around this volcano can escalate and how broadly the effects can spread.

Practical Advice for Travelers Heading to or Through Jakarta

Anyone with flights through Soekarno-Hatta should check directly with their carrier before traveling to the airport. Even after operations resume, residual ash in the atmosphere can cause further delays or diversions. Travelers planning to visit coastal areas of Banten or cross the Sunda Strait by ferry should monitor updates from BNPB and local authorities, as maritime conditions and visibility may remain affected.

Packing a basic mask, ideally an N95 or equivalent, is sensible for anyone already in the region. Outdoor itineraries in affected areas should be flexible.

Why It Matters for Hosts

Independent accommodation operators in Jakarta, Banten, and areas near the Sunda Strait should prepare for a surge in last-minute booking changes, cancellations, and stranded guests who cannot reach their original destination. Having a clear, written policy for volcanic disruption events, including flexible rebooking terms and a simple process for communicating room availability, will reduce friction for both guests and staff. Keeping a small supply of masks on hand for guests is a low-cost gesture that can make a significant difference during ashfall events. Proactively reaching out to confirmed upcoming guests with current conditions and local authority guidance builds trust and reduces anxious inquiries.

This post draws on reporting first published by The News International, citing Reuters as the original newswire source.

First reported by thenews.com.pk.

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