Soekarno-Hatta International Airport, Indonesia's busiest airport, has suspended flight operations due to volcanic ash spewing from the Anak Krakatau volcano. The eruption, which began on Saturday, sent ash clouds into the airspace surrounding the airport, prompting authorities to halt flights early Sunday morning.

The airport's operations were initially suspended from 1:30 AM to 5:30 AM on Sunday. However, following increased volcanic activity and further detection of ash, the closure was extended multiple times, eventually until 1:30 PM local time on Sunday.

This disruption has significantly impacted air travel, affecting over 22,000 passengers and leading to the cancellation or delay of approximately 209 flights. International routes to and from Singapore, Doha, Sydney, and Kuala Lumpur were particularly affected, along with numerous domestic flights.

Anak Krakatau, meaning "Child of Krakatoa," is located in the Sunda Strait between Java and Sumatra. The volcano has a history of sporadic activity, with its caldera formed after the catastrophic 1883 eruption of Mount Krakatoa, which was one of the deadliest in history.

Volcanic ash poses a serious threat to aviation safety. It can damage aircraft engines by baking onto hot internal parts and wearing down turbine blades, clog fuel and air systems, and impair pilot visibility by damaging windscreens.

Authorities are closely monitoring the situation and coordinating with airlines, airport operators, and meteorological agencies to ensure flight safety and manage the ongoing disruptions. Passengers are advised to stay updated on flight statuses and potential schedule changes.

In related news, Indonesia has experienced other volcanic disruptions, such as the Mount Ruang eruption in April 2024, which also caused widespread flight cancellations and stranded thousands across the region.