Thai Airways Company or Thai Airways (TAC; Thai: เดินอากาศไทย) was the domestic flag carrier of Thailand. Its main base was the domestic terminal (Terminal 3) at Don Mueang International Airport (then known as Bangkok International Airport). Its head office was located in Pom Prap Sattru Phai, Bangkok. In 1988 Thai Airways merged to become Thai Airways International (Thai: การบินไทย).