Officials said the incident was reported late last night when a CISF official detected the bullets during x-ray scanning of the baggage.
Six .32 calibre bullets were found from the hand baggage of the passenger, identified as M S Bassi, who was travelling to Shanghai, they said.
"Bassi could not produce a valid license or required documents for carrying the ammunition and he was later handed over to police," a senior officer said.
In a similar incident reported yesterday, a man was arrested for allegedly carrying a country-made pistol and ten live rounds when he entered the Indira Gandhi International Airport (IGIA) to travel to Sharjah.
Carrying of firearms and ammunition inside aircraft is a criminal offence under the law.