* Thousands of passengers affected at Bali airport
* Flag carrier Garuda cancels all flights to and from Bali
* Volcano erupts on East Java
* Two airports reopened of total of five closed earlier (Updates throughout)
By Puji Sukiswanti
DENPASAR, Indonesia, July 10 (Reuters) - Nearly 20,000 passengers were left stranded on Friday at one of Indonesia's busiest international airports on the resort island of Bali after it was forced to close because of a volcanic eruption, an airport official said.
Mount Raung in East Java has been erupting for nearly a week, forcing several airports to close and causing widespread flight disruption on Friday.
"Bali airport will remain closed until noon on Saturday," Farid Indra Nugraha, a spokesman for airport operator Angkasa Pura 1, said in a text message.
Two of the five airports that had been closed earlier on Friday have been re-opened, Nugraha added.
More than 200 domestic and international flights were cancelled in Bali, the airport's general manager Trikora Harjo told Reuters.
National flag carrier Garuda Indonesia GIAA.JK had resumed operating some routes but cancelled all its flights to and from Bali.
"Bali is our second largest hub and this will also affect our international connecting flights," said Ikhsan Rosan, a spokesman for the airline.