Why this order?
Bangkok is a practical arrival. Chiang Mai adds northern culture, and a flight to Koh Samui finishes at the coast without also forcing in the Andaman side.
A focused 12-day route with city, north, and one Gulf island: three clear bases instead of the whole country.
A concrete 12-day Thailand route with three declared bases: Bangkok, Chiang Mai, and one Gulf island.
Use the reference page for context, then check current plans in the Smart Planner.
12 days · 11 nights · 3 Stops
4 nights · City base
4 nights · City base
3 nights · Island base
A map is omitted until verified stop coordinates are available; the ordered stop list is the source-backed route representation.
Bangkok is a practical arrival. Chiang Mai adds northern culture, and a flight to Koh Samui finishes at the coast without also forcing in the Andaman side.
A good fit if you…
Editorial 12-day guidance based on observed routes and linked destination information; check flights, ferries, and seasonal conditions.
This is an editorial route, not a published real-traveler trip. No first-party traveler source is attached to this record.
Route record reviewed: 2026-08-11
With nine or ten days, shorten Bangkok or Koh Samui before adding a fourth base.
With 14–16 days, give Chiang Mai or Koh Samui more breathing room. Treat the Andaman coast as an alternative, not an automatic addition.