The international and the domestic terminals cover an area of 1.5 km2 and 1.8 km2, respectively. The airport is divided into two circles, with five zones each, for administrative conveniences. Around 550 acres of the airport premises fall within the St. Thomas Mount and Pallavaram Cantonment Board's limits. The rest of the area comes under the Meenambakkam town panchayat's jurisdiction. The Kamaraj domestic terminal covers an area of with 48 check-in counters. The Anna international terminal covers an area of with 45 check-in counters, 38 immigration counters including 16 at the departure terminal and 22 at the arrival terminal and 18 customs counter including 2 at the departure terminal and 16 at the arrival terminal. There are four entry gates at the airport, two each at both the terminals. There are 5 X-ray baggage facilities at the domestic terminal and 2 at the international terminal. The total area of retail space at the existing domestic and international terminals is 3,250 sq m, comprising 60 concessions including duty-free retail shops, restaurants, snack bars and executive lounges. The Anna international terminal has 6 boarding gates on the first floor. The Kamaraj domestic terminal has a total of 9 boarding gates, including 6 on the ground floor and 3 on the first floor. The airport has 24 taxiways, including the 411-metre-long taxiway M on the southern side commissioned in March 2017, capable of handling 36 aircraft movements per hour. In January 2018, the airport began cross-runway operations to avoid flight delays, increasing aircraft movements from 36 to 42 an hour.