The Foreign and Commonwealth Office is warning that volcanic activity from Mt Raung in Banyuwangi, East Java, is affecting flight schedules to and from airports in the region.
The lack of visibility has affected flights between Bali and Australia, leaving some travellers stranded.
Airports affected include Ngurah Rai International Airport, Lombok International Airport, Selaparang Airport (West Nusa Tengerra), Blimbinsari Airport, Banyuwangi and Notohadinegro Airport (Jember, East Java).
Travellers are advised to contact their airline for further information.
