If we transit in Vietnam for several hours, do we need Vietnam visa? In case you have a connecting flight in Vietnam (please make sure that you will not leave Vietnam airports), you do not need to have Vietnam visa. Related Should I apply visa in advance? What is Visa Approval code? Why do I need it? Why do I need to have "Approval Letter"? What are visa procedures at Vietnam airport? Is that a problem if my passport is going to expired? Why should I use Vietnam Visa on arrival? Do I need to have exact date of arrival? If I just have intended date, what should I do Is that possible if I travel to Vietnam without approval letter and get visa stamped when I arrive airport? What is visa on arrival? What if my flight is changed and I arrive at another airport different with the one when I apply Visa on arrival?