A total of 108 flights at Bali’s I Gusti Ngurah Rai International Airport have been cancelled or had their schedules adjusted as volcanic ash from increased activity at Mount Anak Krakatau disrupts air travel across Indonesia.

The affected flights were recorded between 7 a.m. on Sunday, September 6, and 11 a.m. on Monday, September 7, according to airport authorities.

Despite the disruption, Ngurah Rai Airport remains open, with domestic and international flight operations and passenger services continuing as normal.

The cancellations have mainly affected routes connecting Bali with Jakarta and Bandung, following the closure of several airports impacted by volcanic ash.

At Ngurah Rai, 43 flights from Jakarta’s Soekarno-Hatta International Airport to Bali were cancelled, along with five flights from Halim Perdanakusuma Airport and three from Husein Sastranegara Airport in Bandung.

On departures from Bali, 51 flights to Soekarno-Hatta were cancelled, while three flights to Halim Perdanakusuma and three to Husein Sastranegara were also cancelled.

The disruption has affected around 13,000 passengers, including approximately 4,400 arriving passengers and 8,700 departing passengers.

Airport operator PT Angkasa Pura Indonesia (InJourney Airports) is coordinating with airlines to update flight schedules and assist affected passengers already at the terminal. AirNav Indonesia is also monitoring airspace affected by volcanic activity.

Ngurah Rai has prepared service recovery measures, including food and drinks for affected passengers who are already at the airport.

Passengers travelling through Bali have been advised to check directly with their airline for the latest flight status before leaving for the airport, as schedules may change at short notice.

The disruption follows heightened activity at Mount Anak Krakatau in the Sunda Strait. Indonesia’s Geological Agency said a continuous eruption that began on September 4 ended in the early hours of September 6 after lasting about 25 hours. Three Strombolian eruptions were then recorded.

The volcano remains at Level III, or Alert, with the Geological Agency warning that the potential for further eruptions remains high. Hazards include heavy ashfall, incandescent rock fragments and lava flows if continuous eruptive activity resumes.

The eruption has also affected aviation operations elsewhere in Indonesia. The Ministry of Transportation said the closure of eight airports affected by volcanic ash was extended on September 7 as authorities prioritised flight safety. The affected airports include Soekarno-Hatta, Halim Perdanakusuma, Radin Inten II, Husein Sastranegara, Budiarto, Pondok Cabe, Taufik Kiemas and Atung Bungsu.

For travellers in Bali, Ngurah Rai International Airport remains operational. However, passengers with flights to or from Jakarta and other affected destinations should be prepared for possible cancellations or schedule changes and check with their airline before travelling to the airport.