Dear ï¿½i?dem Uykan,
Thank you for contacting us!
Please inform that with single entry visa, you are permitted to enter and exit Vietnam ONCE. If you exit the country, your single visa is automatically invalid although the visa duration is still available. For multiple entry visa, you can enter and exit the country at multiple times during your visa duration.
Vietnam visa fee depends on your type of visa and length of your stay in Vietnam. Please click here to see details.