Approval letter (also called pre-approval letter) for visa on arrival is a document issued by the Immigration Department of Vietnam (Vietnam Ministry of Public Security). It functions as an official permission allowing its owner(s) to board the flight to Vietnam and get visa stamped into the passport upon arrival at international airports.
With this visa approval letter, you can use to get Vietnam Visa at one of the following international airports: Noi Bai international airport (Ha Noi city), Tan Son Nhat international airport (Ho Chi Minh City city), Cam Ranh international airport (Nha Trang city), Da Nang airport (Da Nang city), Cat Bi international airport (Hai Phong city), Lien Khuong international airport (Da Lat city) and Phu Quoc international airport (Phu Quoc islands)
