Anak Krakatau Eruption Cancels 301 Flights, Including 16 to Bali
A major eruption of Anak Krakatau on Saturday, 6 September 2026 forced Indonesian authorities to suspend operations at five airports, grounding more than 300 flights and stranding over 22,000 passengers in one of the country's most significant aviation disruptions in recent years.
What happened
The eruption produced lava and a sonic boom audible up to 700 kilometres away, according to Indonesia's geology agency, as first reported by The Guardian. Two further eruptions followed on Sunday. Ash climbed to 6,000 metres on the Java side of the volcano and reached 15,000 metres on the Sumatra side, spreading into parts of Banten province.
Soekarno-Hatta International Airport near Jakarta, the country's primary international gateway, bore the brunt of the disruption. Authorities confirmed ash presence in the airspace through paper testing and extended the shutdown several times; at the time of reporting, the closure was set to last until 1.30 pm local time on Sunday. In total, 301 flights were suspended, including 58 international services. Singapore Airlines cancelled all Jakarta flights for the remainder of Sunday, and Qantas acknowledged cancellations and disruptions to multiple services, stating that safety remained its highest priority and that affected customers had been contacted.
At least 16 domestic flights bound for Bali were also cancelled, according to local airport authorities.
Wider impact on communities
The ash fallout extended well beyond aviation. Several schools cancelled activities on Saturday after students and residents reported eye irritation, and fishermen in the area suspended trips. Port authorities prohibited vessels from approaching within three kilometres of the volcano. Indonesia's disaster mitigation agency, BNPB, announced plans for a weather modification operation, potentially including cloud-seeding, to encourage rainfall that could wash away the ash. BNPB chief Suharyanto stated at a press conference that sufficient rain would clear the ash disrupting daily life.
Airport operator Angkasa Pura arranged food, refreshments, and hotel buses for stranded passengers while airlines worked through rebooking queues.
Volcanic context
Anak Krakatau, whose name translates as "child of Krakatau," emerged from the sea in the caldera left by the catastrophic 1883 eruption of Mount Krakatau, an event that killed an estimated 35,000 people. The volcano sits in the Sunda Strait between Java and Sumatra and has been sporadically active ever since. Volcanic ash poses a serious mechanical hazard to aircraft: it can bake onto hot engine components, erode turbine blades, and clog fuel and air systems, which is why aviation authorities act quickly to close affected airspace.
Why it matters for hosts
For independent accommodation operators in Bali and across Java, eruption events like this are a reminder that flight cancellations can arrive with very little notice and affect guests arriving on domestic as well as international routes. Maintaining a clear, up-to-date cancellation and rebooking policy, and communicating proactively with incoming guests during disruptions, can convert a stressful situation into a trust-building moment. Keeping a short list of reliable local transport alternatives and knowing which airlines serve your guests most frequently will help you respond quickly when airspace closures ripple through to your arrivals schedule.
This post is published on the Qontaktly travel blog. Details of the eruption and its aviation impact were first reported by The Guardian on 6 September 2026.
First reported by theguardian.com.