cistm20 webpages banner

International Attendees

  • Visa exemption eligibility and permitted length of stay
  • Visa on arrival availability
  • Required documentation and processing timelines
  • Passport validity requirements

Because visa policies may change, attendees are encouraged to check requirements early and again closer to their travel dates.

Visas
Many nationalities carrying a tourist passport and in possession of an onward or return airline ticket do not require a visa to enter Thailand. The passport must have at least six months’ validity remaining to be allowed entry. All visitors must fill out a Thailand Digital Arrival Card (TDAC) upon arrival. You can register for the TDAC up to 3 days before arrival and complete the TDAC on the day of your arrival. Upon entry, Thai immigration officials will place an immigration stamp in the passport permitting a 30-day stay in Thailand if arriving by air or land. View more information on visas.

Visa Letter of Invitation
For many international attendees, an official letter of invitation may assist with the visa application process. ISTM is pleased to support registered participants by providing a conference invitation letter upon request.

To request a Visa Letter of Invitation, attendees must:

Important Notes

  • The letter of invitation confirms conference participation only and does not create any financial obligation for ISTM. All travel-related expenses remain the responsibility of the attendee.
  • ISTM cannot guarantee visa approval. Visa decisions are made solely by the appropriate embassy or consulate, and ISTM cannot intervene in the event of a denial.
  • Letters of invitation are provided electronically and are not sent via express or courier services.
  • ISTM strongly recommends early travel planning and timely submission of visa applications.

Currency & Payments
The local currency in Thailand is the Thai Baht (THB).

  • Credit cards are widely accepted in hotels, restaurants, and larger establishments
  • ATMs are readily available throughout Bangkok
  • Attendees are encouraged to notify their bank prior to international travel

Language & Communication

  • Thai is the official language of Thailand
  • English is widely spoken in hotels, airports and tourist areas
  • All conference sessions and materials will be conducted in English

Electricity & Power
Thailand uses Type A, B, C, and O electrical outlets with a standard voltage of 220V.

International attendees may need a plug adapter or voltage converter depending on their home country.

Time Zone
Bangkok operates on Indochina Time (ICT), UTC +7. Thailand does not observe daylight saving time.

Weather & Dress
Bangkok has a tropical climate.

  • Lightweight, breathable clothing is recommended
  • Conference attire is generally business casual
  • Meeting rooms are air-conditioned; a light jacket or sweater is recommended

Questions?
For additional questions related to international travel or conference participation, please refer to the FAQs or contact ISTM.