We plan to go to Phuket and need to fly out of Bangkok so we want to fly Phuket to Bangkok at 12 noon arrive at 2pm, then BKK to Singapore at 6 pm. Will do PCR test 48 hours before the Singapore flight departs. Is this ok (4 hours interval between domestic and international flights) or not enough time? Based on your knowledge of how queues are in BKK airport etc... is the usual check in 2 hours before departure enough time to get through clearance? Also the Phuket to BKK flight is Thai air Asia (is it separate terminal?) And the BKK to Singapore is on scoot. Any advice is greatly appreciated!