After Delta Air Lines said a person was able to board a flight in Seattle without a ticket, a source with knowledge of the situation tells NBC News that the passenger was able to bypass security I.D.

The person, who boarded the flight without a ticket, was detected as the plane was preparing to take off for Hawaii on Christmas Eve.

News of the second Delta stowaway comes after a Russian woman was caught stowing away on a flight from the United States to France in November.