The older domestic and international blocks 2 and 3 were named after former Chief Ministers of Tamil Nadu K. Kamaraj and C. N. Annadurai, respectively. It was the first airport in India to have international and domestic terminals located adjacent to each other. It was designed by Creative Group, an India-based architecture firm. The airport serves as the southern regional headquarters of the Airports Authority of India (AAI) for South India comprising the states of Tamil Nadu, Andhra Pradesh, Kerala, and the union territories of Puducherry and Lakshadweep.
