Airline operations at the Delhi airport, the country's busiest airport, are normal now, airport operator DIAL said on Saturday, a day after a glitch with the air traffic control system delayed more than 800 flights.

The technical problem with the Automatic Message Switching System (AMSS), which supports the air traffic control's flight planning process, continued for over 15 hours from around 5:45 am on Friday before the Airports Authority of India (AAI) said at around 9 pm that the issue had been addressed.

The Indira Gandhi International Airport (IGIA) in the national capital, which has four runways, handles more than 1,500 flight movements daily.

All flight operations are normal, an official said.

''All flight operations are normal at Delhi Airport... passengers are advised to stay

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