What is your home city/country? How long is the trip to post from there, with what connections? How easy/difficult is it to travel to this city/country?
Washington DC. It's possible to get from Vientiane to DC in (just) under 24 hours going through Seoul. Other options include going through Bangkok. There are relatively few non-stop flights to Vientiane so you will almost certainly have to travel through Seoul or Bangkok. There are also non-stop flights (but not many) to Kuala Lumpur and Singapore. - Jun 2020
Washington, DC. It takes over 24 hours to get there, usually though Tokyo/Bangkok or through Seoul. One can also travel through the Middle East and Thailand. - Oct 2018
Pennsylvania. We departed from Dulles and it was at least a full 24 hours through CA, Japan, and Bangkok. - Jan 2014