Thailand Travel Guide: 12 Days Bangkok to the Islands

A 12-day Thailand itinerary combining Bangkok, Chiang Mai and the southern islands, with the best time to go and a realistic day-by-day route.

Thailand travel guide

Overview

Thailand's size means most visitors pick a region rather than trying to cover the whole country. This route balances Bangkok's energy, Chiang Mai's slower pace, and island time in the south.

Best time to visit

November-February is the most reliable window - dry, less humid, and avoids the southwest monsoon (May-October) on the Andaman coast. March-May is hot but island-focused trips still work if you stick to the Gulf coast.

Suggested day-by-day

  • Days 1-3: Bangkok - Grand Palace, Chatuchak Market, a Chao Phraya river evening, street food crawl.
  • Day 4: Flight to Chiang Mai.
  • Days 4-6: Chiang Mai - Old City temples, Doi Suthep, an ethical elephant sanctuary, night market.
  • Day 7: Flight to the south.
  • Days 7-12: Islands - Koh Phi Phi or Koh Lanta for snorkelling, Krabi for limestone cliffs and beaches, or Koh Samui/Koh Phangan on the Gulf side depending on season.

Practical tips

Domestic flights are cheap and far faster than overnight buses or trains for the Bangkok-Chiang Mai-south route - book early for the best fares. Choose Andaman (Phuket/Krabi/Phi Phi) or Gulf (Samui/Phangan) islands based on the month, since their dry seasons are roughly opposite. A 30-day visa exemption covers most nationalities for this length of trip - confirm your specific passport rules before booking.