Tens of thousands of passengers were stranded as Indonesian authorities extended the closure of four airports, including Jakarta's main airport, to 6 pm local time (1100GMT) on Monday after volcanic ash from Mount Anak Krakatau forced them to halt operations, local media reported.
Soekarno-Hatta International Airport remained crowded on Monday morning following the temporary suspension of hundreds of flights over concerns about volcanic ash, local English-language daily Jakarta Globe reported.
Mount Anak Krakatau, about 150 kilometres (90 miles) from Jakarta, erupted on Saturday, sending a plume of volcanic ash into the sky.
Long queues of passengers seeking refunds or rescheduled flights were seen at the airports. Many flights were pushed back to Tuesday.
A total of eight airports halted operations on Sunday after ash was detected in their airspace, disrupting over 1,000 flights and leaving more than 170,000 passengers stranded.
Authorities termed the airport closures a precautionary measure based on aviation safety considerations.
