Advise you not to travel internationally at all if there is no urgency..go to places within the country. I had come to Ireland to attend my daughter's wedding and now am stuck here as I self tested positive for omicron. I am not aware of Thailand but here one cannot get slots for PCR tests so you can't fly back home ..I have had to change tickets and extend hotel stay for another 16 days . Am still not sure if I will be able to make it back.