Use Phuket for the airport and one good beach day, then boat out to Phi Phi, whose karst towers and green lagoons survive every crowd that comes to see them. Finish on laid-back Ko Lanta, where long golden beaches face the sunset and the pace drops to a stroll. November to March is the window; seas are flat and the light is extraordinary.
Featured in Ten island-hopping routes for the perfect beach fortnight · Beach