Thailand's disease control committee has proposed a halving of a two-week hotel isolation requirement for vaccinated arrivals, amid delays in plans to waive quarantine and reopen Bangkok and tourist destinations from next month.

"Reducing the quarantine is not only about tourism, but will help business travellers and foreign students," senior health official Opas Karnkawinpong told a news conference, adding tests would also be required.

Under the proposal, to be presented to the government on Monday, those without vaccination proof would be isolated for 10 days if arriving by air, and 14 days if by land, according to a Reuters report.