Flights from Australia to Bali have been thrown into chaos after the alert level for Mount Agung was raised to RED at 1830 AWST. Three Jetstar flights and one Qantas flight between Australian airports and Bali were  diverted to other airports on Saturday night A Virgin Australia flight from Pt Hedland to Bali also turned back, while another Jetstar flight from Perth, Western Australia, did not depart. Two Indonesia Air Asia flights returned to Bali from Perth, Western Australia without passengers. However, on Sunday, Nov. 26, all airlines resumed flights as the ash cloud moved more to the east away from Bali's airport. Airlines urge all intending passengers to check airline websites. The Darwin Volcanic Ash Advisory Centre said that the volcanic ash cloud was up to 25,000ft. Over the past months, 140,000 people have been evacuated from the region around the volcano when it was on high alert but that number is reduced to about 30,000 after the alert levels were lowered. However, there has been no increase in seismic tremors from the volcano. Indonesian authorities downgraded their eruption warning for Mt Agung in late October after a decrease in seismic activity. The alert was boosted to the highest threat level in September amid fears an eruption was imminent. Mt Agung’s last major eruption was in 1963 and killed more than 1100 people. That eruption lasted for more than a year.