All tourists traveling to Bangkok and
anywhere in Thailand must possess a passport
valid for at least 6 months beyond their
intended length of stay (Retirement visa
requires at least 18 months validity).
Thailand has over 30 International
Immigration Check points, though most
visitors to Bangkok will clear immigration
at Bangkok (Suvarnabhumi International
For many tourists it is not necessary to apply for a visa beforehand if you come from a country that is eligible for a Visa Exemption and are not going to be in the country for more than 30 days. Other tourists may be able to apply for a Visa on Arrival, which costs 1,000 baht and is valid for 15 days. For everyone else, and for those wishing to stay longer in the country for purposes of tourism or leisure should apply for a 60-day Tourist Visa from the Royal Thai Embassy or consulate in the country where you reside.
Check out more information: www.mfa.go.th/main/en/services/4908