Under the plan, vaccinated travelers who test negative for Covid-19 before and after arriving can enter Phuket without quarantining. The island welcomed 26,400 vaccinated visitors and generated tourism revenue of 1.63 billion Thai baht ($48.5 million) in July and August, according to a report by the Tourism Authority of Thailand.

Now vaccinated travelers can visit other parts of Thailand, including the island of Koh Samui and parts of the provinces of Krabi and Phang-Nga.

On Monday, Thai authorities announced plans to open a large swath of the country in the next three months. Authorities approved a four-phase reopening timeline that prioritizes popular tourist destinations, including Bangkok.