Jakarta's Main Airport Closed as Ash Cloud Grounds Flights Across the Region
An eruption of Mount Anak Krakatau beginning on 5 September 2026 triggered the closure of eight Indonesian airports, including Soekarno-Hatta International Airport, Indonesia's busiest gateway. By Monday, 7 September, the disruption had stranded more than 270,000 passengers and cancelled, delayed, or diverted thousands of flights. The closures were extended at Soekarno-Hatta and at least three other airports until 6:00 pm local time on Monday, according to airport operator Angkasa Pura.
Scale of the Disruption
The Transportation Ministry confirmed the 270,000-passenger figure represents the cumulative impact since the eruption began, covering all cancelled, delayed, and diverted services. On Monday morning alone, more than 240 domestic and international flights were cancelled or delayed at Soekarno-Hatta, affecting close to 30,000 passengers in a single day.
Halim Perdanakusuma, a smaller Jakarta airport serving both civil and military traffic, also remained closed. One airport in south Sumatra was able to resume operations Monday morning, offering a partial reprieve.
To ease congestion, the Transportation Ministry designated six alternative airports in East Java, Central Java, and Yogyakarta as receiving hubs for aircraft originally bound for Jakarta. Free bus services were arranged for passengers needing to connect onward from those airports. Transportation Minister Dudy Purwagandhi also confirmed that immigration rules were relaxed for foreign visitors whose visas may have lapsed due to the cancellations.
Volcano Status: Risk Remains Elevated
Anak Krakatau, which sits in the Sunda Strait between Java and Sumatra, has been intermittently active since it rose from the sea in the early twentieth century. The most recent eruption recorded by the monitoring agency occurred on Sunday at 8:23 pm. As of Monday, the geology agency head Lana Saria warned that hazards include ejected incandescent rocks, heavy ashfall, and potential lava flows if activity continues.
Volcano expert Surono told Reuters that ash laden with sulphur and silica poses a direct threat to aircraft engines, and that low visibility compounds the danger. He described the current eruption as unusual for Anak Krakatau. The agency stated that the probability of further eruptions in the coming period remains high.
For context, a 2018 collapse of part of the volcano's flank generated a tsunami that killed 429 people. The current eruption has not triggered a tsunami, but authorities are monitoring the situation closely.
Travelers Caught in the Middle
Passengers at Soekarno-Hatta described scrambling for accommodation and information. Italian tourist Michel Miegge, a 32-year-old software engineer, told AFP he and his girlfriend had no clear guidance from their airline and found many Jakarta hotels already fully booked. French painter Carol Odile, 60, was travelling with a group to see Komodo dragons in Flores when her flight was cancelled; she said the group remained optimistic about rescheduling.
Why It Matters for Hosts
Independent accommodation operators in Jakarta and across Java should treat volcanic disruption as a recurring operational scenario, not a one-off. During this closure, hotels near Soekarno-Hatta filled rapidly while stranded passengers struggled to find rooms. Hosts who maintain a clear, up-to-date cancellation and rebooking policy, keep direct contact details accessible, and can quickly communicate availability through their own channels will be better positioned to assist guests and capture last-minute demand. Equally, operators in alternative hub cities such as Yogyakarta and Surabaya may see sudden inbound demand when Jakarta flights divert; having flexible check-in procedures and clear room availability signals matters in those moments.
Details in this post were first reported by The Jakarta Post.
First reported by thejakartapost.com.