Can a foreign who currently staying in Bangkok, fully vaccinated, has long term visa, travel to ChiangMai via domestic flight during November 2021? Is there any needs for Quarantine and swap test for COVID-19. Thank you in advance for all of your comments and advices.
TLDR : Answer Summary
A fully vaccinated foreigner holding a long-term visa can travel from Bangkok to Chiang Mai via domestic flight in November 2021. As of this date, there are no quarantine requirements or COVID-19 swap tests mandated for vaccinated individuals.