The Indigo plane, airbus 320, took off from here at around 8:45 PM but had to land after the pilot thought there was some problem with the aircraft's landing gear, sources said.
The ATC was alerted and the plane landed at around 9:35 PM safely, they said.
All the 162 passengers and six crew members are safe. Passengers are being accommodated in another flight, an airline spokesperson said.
The aircraft is being inspected for the problem, she added.