She was apprehended yesterday when the Central Industrial Security Force personnel, deployed for the airport's security, found her roaming suspiciously inside the terminal building of the Delhi airport, the official said.
The woman has been identified as Peru national Sandra Veronica H Rios (27).
The woman told the CISF personnel that she had come to see off her brother and mother, who were traveling to Kuwait, he said.
Rios told officials that she allegedly used a canceled ticket and her valid passport to enter the airport terminal, the official said.
Entering the airport terminal without a valid ticket is illegal under Indian aviation rules.