The Directorate General of Civil Aviation said the glitch in US Federal Aviation Administration's system had no impact on flights from India to the United States. The technical failure in the US FAA system saw hundreds of flights across the US being grounded, leading to chaos at airports.
A senior DGCA official said operations were normal at all the airports in India and as of now there was no impact on flights from India to the US.
"Operations are normal at all the airports in India and as of now there is no impact on flights from India to the US amid a glitch in US Federal Aviation Administration's system," ANI quoted a senior DGCA official as saying.
READ | US: Stranded Passengers React On Social Media As System Failure Leads To Widespread Flight Delays
FlightAware, which tracks delays and cancellations, showed nearly 400 flights to, from and within the United States as being delayed.
US President Joe Biden has been briefed about the outage, and the White House said there was no evidence of a cyberattack "at this point".
The FAA said there was a problem with the system that alerts pilots to potential hazards on flight routes.
The FAA said in a statement it had ordered airlines to pause all domestic departures until 9 am Eastern Time while it tried to restore its NOTAMS -- or Notice to Air Missions -- system.
A NOTAM is a notice containing information essential to personnel concerned with flight operations. Information on NOTAM include items such as runway closures, general bird hazard warnings, or low-altitude construction obstacles.
United Airlines said it had temporarily delayed all domestic flights. Passengers took to social media to complain about delays and airport chaos.
European flights into the US appeared to be largely unaffected. Irish carrier Aer Lingus said services to the US were continuing. Dublin Airport's website showed that its flights to Newark, Boston, Chicago and Los Angeles were running on schedule.
(With inputs from agencies)