Delhi International Airport Ltd or DIAL, operated by GMR Infrastructure, launched its prestigious T3 terminal in July 2010. A company-mandated study of DIAL by NCAER on the economic benefits of airports brings out how the revenue mix of the airport has changed, moving from aeronautical revenue (airline landing fees and passenger fees) to non-aeronautical services. As part of the study, a survey of 4,747 passengers gives an indication of passenger profile in terms of income, expenditure, purpose of travel and frequency. (Click on graphic)