How Thai entry rules generally work

Thailand's entry requirements depend heavily on your nationality, and the specific rules — including visa-exemption periods, visa-on-arrival eligibility, and any advance registration requirements — do change over time. Rather than list numbers here that could be out of date by the time you read them, treat this page as a checklist of what to verify, and confirm the details directly with the Royal Thai Embassy or Consulate for your country, or Thailand's official immigration authority, close to your travel dates.

What to check before you book

  • Whether your nationality qualifies for visa-free or visa-on-arrival entry, and for how many days.
  • Whether any advance online arrival registration is currently required.
  • Passport validity requirements — many countries in the region require six months' validity beyond your entry date.
  • Proof of onward travel and, occasionally, proof of funds — rarely checked but worth having ready.
  • Rules around extending your stay in-country if you want to stay longer than your initial entry allows, which is handled through the Thai Immigration Bureau.

Arriving via Chiang Mai specifically

Chiang Mai International Airport is an international point of entry, so standard national entry rules apply whether you land here or in Bangkok. If you plan to extend your stay, Chiang Mai has its own Immigration Office that handles extensions locally, so you don't need to travel to Bangkok for routine paperwork.

Good to know

Visa and entry policies are set by the Thai government and can change with little notice. This page is a general orientation, not legal or immigration advice — always verify current requirements on an official government source before booking non-refundable flights.