Travelers and visitors who arrive in Vietnam with an intention to stay in the country for less than 24 hours, will not require a visa they stay in transit area. Please note that you are required to have a visa for transit if you have to go out of the transit area for collecting baggages for your transit flight (please check with your airlines to make sure about this).
In order to go to the baggage claim area, you are required you go through the passport control. You are unable to collect your baggages and change the flight if you don’t have a visa and also you are not citizens of countries who is exempted from Vietnam visa.
The individuals who are staying at the transfer area will not be provided the permission to leave their port of arrival and try to access the country and the Vietnam border crossing region. The Vietnam e-visa for transit purpose will become necessary if individuals or tourists wish to leave their transfer area for their reasons.
Transit visa is a short-period, temporary visa needed in some countries to stopover for a minimum of 24 hours in the country. If you are traveller who is about to stopover in Vietnam to get your destination flight, then you may need a transit visa.