Hi all. I am looking for a bit of guidance, I am currently in thialand on a UK passport but I want to travel to vietnam from Bangkok airport, and then from there to pnom pen via the mekong, and then fly back to Thailand. Do I have to get a return ticket to vietnam or can I travel on a single ticket.?
TLDR : Answer Summary
You do not need a return ticket to Vietnam when traveling from Thailand. While some airlines may enforce strict policies regarding ticketing, you will require an onward ticket out of Thailand if re-entering within 60 days using a visa exemption. Your ticket to Vietnam can fulfill this requirement.