Indonesia's Mount Anak Krakatau began a series of powerful eruptions over the weekend, spewing lava and towering plumes of volcanic ash that have severely disrupted air travel and daily life across the region. As of September 7, 2026, eight Indonesian airports have been forced to close, grounding more than 1,500 flights and leaving an estimated 170,000 passengers stranded.
Air Travel Chaos Across Indonesia
The volcanic activity, which commenced with lava fountains and loud booms on September 5 and continued with two more eruptions on September 6, caused volcanic ash to drift more than 150 kilometers from the crater. This prompted the Ministry of Transportation to suspend operations at key aviation hubs, including Jakarta's Soekarno-Hatta International Airport, Husein Sastranegara Airport in Bandung, and Radin Inten II Airport near Bandar Lampung on Sumatra.
According to ministry officials, 1,558 flights were either delayed or canceled across the eight affected facilities by Sunday. Over 900 of these disruptions occurred at Soekarno-Hatta alone, with the capital's main airport extending its operational suspension into Monday morning due to the volcano's continued activity. Stranded passengers, like businesswoman Henny Yensan (44), faced long queues to reschedule their travel plans. "Everybody was disappointed," Yensan remarked, "No one flew into a rage because, after all, this is due to natural disaster."
Wider Regional Impact and Safety Measures
The effects of the Anak Krakatau eruption extend beyond air travel. In Jakarta, schools transitioned to online learning starting September 7 to mitigate risks from the ashfall. Bandar Lampung, at the southern tip of Sumatra, reported roads and parked vehicles blanketed in volcanic ash.
Maritime authorities have also implemented precautions. Port authorities have prohibited ships from entering a 3-kilometer exclusion zone around the volcano and advised vessels navigating the Sunda Strait to proceed with heightened caution. Transportation Minister Dudy Purwagandhi confirmed that alternative airports in cities like Semarang and Surabaya have been designated for diverted landings to manage the affected air traffic.
Volcano's History and Geological Context
Lana Saria, Head of the Geology Agency, issued a stern warning against entering the 3-kilometer exclusion zone, emphasizing the direct hazard posed by ejected volcanic material. Saria also clarified that the current series of eruptions does not have the potential to trigger a tsunami, a concern stemming from the volcano's history.
Anak Krakatau, meaning "Child of Krakatau," is situated in the Sunda Strait, nestled between the islands of Java and Sumatra. It formed within the caldera left by the catastrophic 1883 eruption of Mount Krakatau, an event that claimed an estimated 35,000 lives. More recently, in 2018, a partial collapse of Anak Krakatau triggered a tsunami that tragically killed 429 people. Indonesia's location on the Pacific Ring of Fire makes it particularly susceptible to high seismic and volcanic activity.