There are two options through which you can get Vietnam visa :

• Contact the embassy of Vietnam in your country to obtain visa before you arrive Vietnam. The procedures are quick and simple.
• Obtain the letter of approval to pick up the visa upon arrival to Vietnam airport. 

1. Apply online 

a. At the arrival airport in Vietnam:

This is the fastest and easiest way for Colombian air travelers to be granted a Vietnam visa. 

To apply, follow the simple steps given below:

Does citizens of Colombia need visa for entering Vietnam or not?

Vietnam is located on the eastern Indochina Peninsula. The country covers an area of approximately 331,210 km2 making it almost the size of Germany. The land of Vietnam is typically hilly and densely forested. Mountains occupy 40% of the Vietnam's land area, and tropical forests cover around 42% of the country’s land. It is a beautiful pace in terms of climatic condition, ecology and biodiversity, culture and cuisine. Peoples from different parts of the world travel here to experience the scenic beauty of this country.