The Delhi airport witnessed average delays of 46 minutes for arrivals and 54 minutes for departures, media reports said quoting FlightRadar.
The passenger, a 40-year-old resident of Jaipur, Rajasthan, was intercepted by the customs team based on his profiling.
Delhi airport on Saturday issued an official passenger advisory to inform that all flights are operating normally as runway visibility has improved.
A 32-year-old Canadian national was apprehended at the Indira Gandhi International Airport here for carrying a crocodile skull, the customs said on Thursday.
The national capital continued to experience cold weather on Sunday, with the maximum temperature recorded at 17°C, four notches below the seasonal average.
As per cops, the threat mail was received on Monday morning at the Delhi International Airport Limited (DIAL) office, which read that there was a bomb inside Delhi to Dubai flight. However, it turned out to be a hoax.
The aircraft landed safely at Delhi airport and reportedly nothing suspicious was found after thorough search.
The official further said that DIAL is working diligently with its partner Honeywell to complete the process soon.
Sharing a passenger advisory on its official X handle, the Delhi airport said that passengers are requested to contact the airline concerned for updated flight operations.
In a post on X, Scindia said, "In view of the fog-induced disruptions, Standard Operating Procedures (SOPs) on mitigating passenger inconvenience were issued yesterday to all the airlines."
