Foreign visitors may be able to enjoy visa-free trips to Thailand for 15 to 90 days.

Under the Visa Exemption program, the length of stay per visit will be 30 days for passport holders of the following countries/territories who may enter Thailand under a tourist Visa Exemption scheme: Andorra, Australia, Austria, Bahrain, Belgium, Brunei, Canada, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hong Kong, Hungary, Iceland, Indonesia, Ireland, Israel, Italy, Japan, Kuwait, Latvia, Liechtenstein, Lithuania, Luxembourg, Malaysia, Maldives, Mauritius, Monaco, The Netherlands, New Zealand, Norway, Oman, The Philippines, Poland, Portugal, Qatar, San Marino, Saudi Arabia, Singapore, Slovak, Slovenia, South Africa, Spain, Sweden, Switzerland, Turkey, the UAE, UK, Ukraine, Vietnam and the USA.

Under the Visa on Arrival program, the length of stay per visit will be 15 days for passport holders of the following countries/territories who may apply for a VOA at the airport: Bhutan, Bulgaria, China, Cyprus, Ethiopia, Fiji, Georgia, India, Kazakhstan, Malta, Mexico, Nauru, Papua New Guinea, Romania, Saudi Arabia, Taiwan, Uzbekistan, and Vanuatu. The visa fee of 2,000 THB will cost for these countries.

In addition, passport holders of the following countries/ territories may enter Thailand without a visa under a bilateral agreement: Cambodia (15 days), Myanmar (15 days), Lao PDR. (30 days), Macau (30 days), Mongolia (30 days), Russia (30 days), Argentina (90 days), Brazil (90 days), Chile (90 days), Korea (ROK) (90 days), and Peru (90 days).

Note: Please make sure that your passport is valid for at least 6 months or check with your airline for the passport validity requirement.

Reference: https://www.thaiembassy.com/weekly-updates/thailand-travel-restrictions-for-june-2023