Indonesia's Mount Bromo was spewing white ash over the weekend, forcing the temporary closure of Malang Airport in East Java.
All incoming and outgoing flights were cancelled at Abdulrachman Saleh Airport in Malang as of 9:30am on Friday (local time), local news agency Jakarta Globe reported.
Affected airlines were forced to refund tickets, reschedule flights or arrange for passengers to be transported the two-hour drive to major Indonesian airport Juanda International.
Indonesian airline Garuda Indonesia tweeted the airport would be closed until 9am today (local time), 2pm New Zealand time. The airport should now be reopened, but this is yet to be confirmed.
Volcanoes have caused lengthy closures in Indonesia, and around the world. In July last year a volcano eruption on Lombok Island caused the cancellation of hundreds of fights out of Bali, stranding some tourists for weeks.