Activists of employee unions and associations gathered in front of the airport here this afternoon and raised slogans against the Centre, airport sources said.
They also held placards against privatisation of airports in the country including the one in Chennai, the sources said.
Speaking to reporters, union activist George said the Centre had not honoured any of the promises it made while privatising Delhi and Mumbai airports.
"Now they are trying to privatise other airports in the country," he said.