Australian airlines are resuming flights in and out of the northern city of Darwin after a volcanic ash cloud forced cancellations throughout the weekend.

Operations at Darwin International Airport were returning to normal as of Sunday (June 1) afternoon, according to CNN.

Ash was still emerging from Indonesia's Mount Sangeang Api volcano as of last night, and further flight disruption has not been ruled out.

Hundreds of passengers were left stranded due to the eruption on May 30.

Qantas, Jetstar and Virgin Australia have all now either resumed flights to Darwin or are about to, as of press time.

Volcanic ash is considered very dangerous to aircraft as the fine particles can damage engines, according to CNN.

Deputy Prime Minister Warren Truss said it could be days before Australian services return to normal.

"With the volcano continuing to erupt, we can still see a significant amount of ash around the volcano at the moment," said Emile Jansons, manager of the Darwin Volcanic Ash Advisory Centre, to Reuters. "Our biggest concern is that the boundary of the ash cloud is not very far away from Bali and if there is another larger eruption then the ash could move and affect that airspace."

Indonesia is prone to frequent earthquakes and volcanic eruptions. There are approximately 130 active volcanoes in Indonesia.

The island of Sangeang Api has no permanent residents after the left during an eruption back in 1988.

Farmers had been told to leave the area as well, according to CNN.

Tens of thousands of people fled their homes when a volcano erupted in east Java back in February. Several people were killed as a result of the eruption, according to Reuters.

See Now: OnePlus 6: How Different Will It Be From OnePlus 5?