I have not decided my arrival airport yet. What if I fill the form with Noi Bai and then I arrive in Tan Son Nhat. Please reply me soon. I am going to Vietnam at the end of this month.
Thank you for leaving us a message.
Please be informed that there will be no problem if you change your arrival airport. You will get visa stamped as normally as the visa approval letter works at all international airports in Vietnam.
We hope that this information is clear to you.
To apply for Vietnam visa on arrival, please click here: https://booking.vietnam-visa.com/step1.html.