(Passport/ID Card, Residence Card/Visa/equal documents) are strictly compulsory. For flights, foreigners are required to present Passport only (ID Card is not allowed). Please make sure you always have them on hand during your travel. You will be denied to board and move between provinces without such documents.
You are required to fill in Health Declaration before you travel. Follow the link: https://tokhaiyte.vn/ (2 minutes) and take a screenshot of the QR code after you finish and present it when boarding.