Thailand guide for US travelers
Every fact links to its source. Schedules, fees and prices change, so confirm with the linked operator or official site before you book. Last checked: Oct 17, 2026.
Entry and visa rules for US citizens
- Visa: US citizens don't need a visa for stays under 60 days. The State Dept notes the government may soon reduce this to 30 days, so check the "admit until" stamp you get on arrival. State Dept
- Arrival card: pre-arrival online registration is required through the Thailand Digital Arrival Card (TDAC). Use only the official site. TDAC (Thai Immigration)
- Passport: valid for 6 months beyond your arrival date and undamaged. State Dept
- Onward ticket: immigration officials or airline staff may ask for an onward or return ticket and proof of funds. State Dept
- Longer stays: visas are handled through the official Thai e-Visa site. Thai e-Visa (MFA)
- Safety: State Dept advisory Level 1 (issued Jul 7, 2026). State Dept
- Official sources: US State Dept Thailand page. Summary cross-checked with our Visas & Entry page. Rules change; confirm before you book. Not legal or immigration advice.
Best time to go
- Thailand has three seasons. The rainy (southwest monsoon) season runs roughly mid-May to mid-October; the cooler, drier months follow, and the hot season comes before the rains. Wikipedia: Climate of Thailand
- Weather differs between the Andaman coast (Phuket, Krabi) and the Gulf islands (Ko Samui), so check the forecast for the specific region you are visiting.
Getting there from the US
eSIMs and tours
- Buy a travel eSIM before you fly so you have data on landing. eSIM option: Airalo Thailand eSIM (check your phone is unlocked and eSIM-compatible).
- Tours, transfers and attraction tickets: Klook Thailand
