Is it OK to fly into Thailand with an antigen (or PCR) test obtained from country A, checking in for the flight from country B (after a 24 hour stopover), provided the results are within 72 hours of the flight departure to Bangkok? I assume yes, but wanted confirmation.

Just as an example here, say I were to fly from Australia to Vietnam with a test result issued in Australia, then spend one night in Vietnam and then fly onto Thailand?

I need to travel to the United States next week and I have some questions about the process. I'm unvaccinated and I'm worried about being denied entry at airports along the way. My flight path is from Bangkok to Japan to Canada to the US. I don't have to change airports in Japan or Canada. Will I be allowed to wait in the international transit areas of these airports and board my next flights? Do I just need to show a recent covid test? Does it need to be PCR or antigen?

My understanding is that a negative covid test taken within 24 hours is all I need to enter the US (as a US citizen), but my total flight time is 32 hours, so does that mean I will need to get another covid test along the way at one of the airports?

What are the current requirements for unvaccinated travelers returning to Thailand from the US? Do I just need to register with Thailand Pass? Do I need to get a covid test before I leave or on arrival? Does it need to be PCR or antigen?

Any help with answering these questions would be greatly appreciated. Thank you 🙏

Thanks for the help and replies, TP confirmed and e visa confirmed, all printed off ready to go.

My arse can stop squeaking and i can relax a little before my flight on Monday