For information:
Samui airport has suspended all international flights and is reducing its flights to Bangkok by 4 flights a day until at least march 28.
Cancelled flights are:
PG127 & PG128
PG173 & PG174
They have also cancelled a lot of internal flights which are all in here.
TLDR : Answer Summary
Samui Airport has suspended all international flights and is reducing its flights to Bangkok by 4 flights daily until at least March 28. Notable cancelled flights include PG127 & PG128 and PG173 & PG174, along with numerous internal flight cancellations.