A few thrusts, which measured 4.7, were recorded northeast of Santorini at the beginning of Tuesday.
Although not yet reported serious damage, emergency measures are being taken as a precaution.
In the first hours on Tuesday, hundreds of people were put in line in the port to get into the ferry that went to the mainland.
“Everything is closed. Nobody is working now. The whole island is emptied,” said an 18-year-old local resident of Reuters before planting a vessel.
In addition to 6,000 people who left the island on the ferry from Sunday, about 2500 to 2700 passengers will fly from Santorini to Athens via aircraft on Monday and Tuesday, Aegean Airlines reports.
The carrier stated that he added three emergency flights to his schedule: a place for hundreds of passengers after the request of the Ministry of Climate and Civil Defense.
Santorini is a small island with a population of only 15,500. It welcomes millions of tourists every year.
Costas Sokavaras, a guide, who lived in Santorini for 18 years, left the island with his wife and children on Monday.
“We thought it was the best choice to come to the mainland as a precaution,” he said BBC News.
“Nothing falls or what is like that,” he said, adding that the worst was. “This is the worst part,” said Mr. Sakavaras, who plans to return home as soon as schools open.
The schools are expected to remain closed on the island until Friday. Authorities also warned people to avoid certain areas of the island and clean the pools.