Ngurah Rai International Airport in Bali faced flight cancellations last week after ash from the Tengger Caldera volcano in the East Java Province spread into busy airspace to a height of 5.5km.
The Indonesian Transport ministry issued a warning to international airlines after receiving information from the Darwin Volcanic Ash Advisory Centre in Australia, that the ash from Mount Bromo had reached 5,500m in the southeast direction to some parts of Bali.
Several international airlines cancelled or diverted their flights to Bali and the ensuing ash cloud is said to be blowing close to Denpasar International Airport.
Jetstar, Virgin Blue, Cathay Pacific and Singapore Airlines were among the carriers that had to divert their planes after receiving the warning from the ministry.
Ngurah Rai International Airport spokeswoman Sherly Yunita said the airport remains open and domestic flights continue to operate.