Jakarta's Main Airport Shut as Anak Krakatau Ash Spreads
Volcanic ash from Mount Anak Krakatau drifted over Jakarta on Sunday, 6 September 2026, forcing the temporary closure of Soekarno-Hatta International Airport and throwing the travel plans of nearly 23,000 passengers into disarray. In total, 209 flights were disrupted across the airport, with 16 international services cancelled, seven delayed, and five rescheduled.
The eruption's reach extended well beyond Indonesia's borders. Affected international routes included services to and from Kuala Lumpur, Singapore, Hong Kong, Sydney, Seoul/Incheon, Doha, and Amsterdam, according to Civil Aviation Director General Lukman F Laisa.
What Triggered the Closures
Anak Krakatau, the active volcanic island rising from the Sunda Strait between Java and Sumatra, had already been sitting at Alert Level III (Siaga) since 2 July, according to Indonesia's Geological Agency. Continuous eruptive activity was recorded from 11:07 pm local time on Saturday, producing what the agency described as lava fountain-like phenomena, lava flows, and volcanic ash columns. A three-kilometre exclusion zone around the volcano remained in force.
AirNav Indonesia issued a Notice to Airmen flagging the hazard to flight operations at Soekarno-Hatta. Aviation authorities noted that volcanic ash at altitude can reduce cockpit visibility, interfere with navigation systems, and, critically, compromise jet engine performance, all factors that make flying through an ash cloud unacceptable under standard safety protocols.
Batik Air Cancels Eight KL-Jakarta Flights
Malaysian carrier Batik Air cancelled eight scheduled flights on the Kuala Lumpur-Jakarta corridor as a direct result of the airport disruption. The affected flight numbers were OD398, OD399, OD346, OD347, OD388, OD389, OD390, and OD391. The airline said the decision followed close coordination with aviation authorities and airport operators, with crew and passenger safety as the stated priority.
Passengers on cancelled Batik Air services were offered two options: rebooking onto the next available flight, subject to seat availability, or a full refund. The airline committed to notifying affected travelers through registered contact details and said it would post updates on its official website and social media channels.
Practical Advice for Travelers Heading to Jakarta
Anyone planning travel to or from Jakarta in the near term should check directly with their airline before heading to the airport. Anak Krakatau's elevated alert status suggests eruptions could continue, and further ash dispersal events remain possible. Travel insurance policies that cover volcanic disruption are worth reviewing before booking onward connections.
For travelers already in Jakarta, the airport situation can shift quickly once ash clears and wind patterns change. Staying in contact with accommodation hosts, who often have real-time local knowledge, can help with rebooking decisions.
Why It Matters for Hosts
Independent hotels, guesthouses, and villa operators in the Jakarta area should prepare a short, clear communication template for guests facing flight disruptions. Proactively reaching out to arriving guests with airport status updates, flexible check-in windows, and local transport alternatives builds trust and reduces last-minute no-shows. Keeping a list of reliable airport transfer contacts who can monitor flight statuses in real time is a low-cost way to add genuine value during disruptions like this one.
This post is published on the Qontaktly travel blog. The details of the airport closure and flight cancellations were first reported by The Star, citing Bernama and a statement from Batik Air.
First reported by thestar.com.my.