Indonesia has temporarily closed eight airports, according to reports, after volcanic ash from Mount Anak Krakatau spread across parts of Java and Sumatra.
The closures have caused flight delays, cancellations and changes to flight routes.
Which airports are being closed?
The affected airports include Soekarno-Hatta International Airport in Jakarta.
Other affected airports are Halim Perdanakusuma, Radin Inten II, Husein Sastranegara, Budiarto, Pondok Cabe, Taufik Kiemas and Atung Bungsu.
How many flights have been affected?
Authorities first reported that more than 1,500 flights were affected. Around 170,000 passengers were also affected.
Later figures from airport operator InJourney showed that about 2,300 flights and more than 268,000 passengers were affected at four of its airports.
Several international airlines have also changed their schedules. Emirates and Etihad Airways also cancelled or delayed some flights to Jakarta. Airlines have also offered passengers new bookings or refunds.
Why were the airports closed?
Volcanic ash has reached heights of up to 15,000 metres. The ash can damage aircraft engines and make it hard for pilots to see.
Authorities closed the airports to protect passengers and aircraft. Indonesia has also increased operating hours at five other airports.
These include Kertajati, Ahmad Yani, Juanda, Yogyakarta International and Adi Soemarmo. These airports will handle some of the diverted flights.
What are authorities advising residents?
Some schools in affected areas have shifted to online classes because of the ash.
Residents have also been advised to wear masks when going outside. Indonesia’s volcano monitoring agency has warned that more eruptions are possible.
What is Mount Anak Krakatau?
Anak Krakatau means “Child of Krakatoa”. The volcano formed from the remains of the volcano linked to the deadly 1883 Krakatoa eruption.
Indonesia’s Anak Krakatau volcano erupted again in September 2026. It also caused a deadly tsunami in 2018.