With Visa On Arrival, the approval letter is one of the most important documents that you will be needing to have, because:

• It is used for presenting to board the airplane.
• It will prove that you are accepted to get the visa stamp on arrival or not.

The approval letter is the first thing that you should apply.through a few simple steps:

Step 1: Access the website of tourism agencies. Then filling all required information in the online application form.

Step 2: Do the online payment

Step 3: Wait for 48 working hours to get the approval letter via email. You can also require the express service to get this letter earlier within 24 hours or even 2 hours.

Therefore, we suggest that you can apply for at least 3 days before boarding the airplane. To be better, we recommend that you should apply for the approval letter 1 month before entering Vietnam to handle every unexpected problem.