Paisal Chuenchit, deputy director-general of the Customs Department, said that Ms Ngo Thi Lien, 37, a Vietnamese national, was arrested on arrival from China on AirAsia Flight FD 2517 at 2am.
Custom officials searched her two suitcases and found three pairs of platforms, among other articles. A subsequent examination of the shoes found 1.5 kg of "ya ice" had been stuffed in the soles.
The woman said a Vietnamese friend had asked her to take the suitcases to Bangkok where a Chinese man would contact her by phone and arrange to pick them up.
The woman was charged with possessing illicit drugs with intent to sell.