Thailand is planning to end the seven-day quarantine requirement for fully vaccinated holidaymakers from 10 countries, including the UK, from 1 November.
Entertainment venues are also expected to reopen and the sale of alcohol will be permitted, from 1 December.
In a televised address, Prime Minister Prayuth Chan-ocha said holidaymakers from low-risk countries, such as the UK, will still have to present a negative COVID test and take a second on arrival.
If the second test is negative, they will be allowed to travel freely within Thailand, he said.
At the moment, British holidaymakers are required to spend the first seven days of their holiday in a designated resort.
Thailand was removed from the UK’s red travel list on Monday and the Foreign Office is no longer advising against non-essential travel.