It is reported that air traffic controllers are unable to get flight plans automatically due to the technical issues since Thursday evening.

Indira Gandhi International Airport is facing significant flight delays due to a technical glitch in the Air Traffic Control ...

Over a hundred flights were delayed at the Delhi airport this morning due to a technical glitch in the air traffic control (ATC) system. Efforts are ongoing to resolve the issue, said the airport, ...

The man said that even the flight attendants appeared confused and were unable to provide any clear technical explanation.

Sources reported that the Delhi airport server has been down since early this morning, and several airlines have also warned of potential cascading delays.