At Bali's global airport, hundreds of passengers were queuing in the lobby of the terminal to get updates from airlines, while some slept on the floor next to their baggage.
Bali opened its worldwide airport on Friday after a volcanic eruption temporarily grounded flights, stranding thousands of tourists on the Indonesian holiday island. "All tourist activities and trekking activities near Mount Agung have been suspended until further notice", the statement said.
Almost 450 flights had been cancelled and 75,000 travellers affected.
Mount Agung has been spewing clouds of ash up to 2,500 metres into the air since Wednesday.
Mount Agung volcano became active again after a lull since late past year. Authorities are still scrutinising the situation and have not raised the alert level yet.
Indonesia sits on the so-called Pacific Ring of Fire, an area known for seismic upheavals and volcanic eruptions. Government seismologists monitor more than 120 active volcanoes.
The airport had been closed since 3 a.m. local time on Friday.
Flights between Sydney, Melbourne and Perth and the tourist island have been delayed, cancelled and turned back because of renewed activity at the Indonesian volcano.
Mount Aging, an active volcano in northeastern Bali, has been puffing since late previous year. For any customers with questions we advise they contact their store or travel expert as soon as possible to get the latest advice on their individual itineraries and travel insurance policies, " said Sue Matson, Flight Centre's general manager, retail.
Agung has been erupting periodically since it rumbled back to life previous year.
However, Indonesia's disaster mitigation agency said Agung's danger status had not changed and flights were not in danger.
The exclusion zone around the volcano is four kilometres, with locals being told to prepare their face masks as the threat of a full-scale eruption looms.
Bali's governor said officials were working on getting visitors on their way.
Agung's last major eruption in 1963 killed around 1,600 people.