Lan Luu, a 13-year-old Tampa, Fla., girl who was the object of a nationwide search after failing to board a flight at Dulles International Airport Tuesday, was found yesterday by the FBI at the home of an aunt in Garden Grove, Calif., a Los Angeles suburb, the FBI reported.

Instead of boarding a flight to Tampa on the second leg of a trip home from a visit to Montreal, the girl took a flight to San Francisco, then flew to the Los Angeles area, according to the FBI.

The girl apparently left Dulles "of her own free will" and was found "safe and unharmed in Garden Grove," an FBI official said last night.

Jack Espinosa, a spokesman for the Hillsborough County, Fla., sheriff's office, said that the girl telephoned her aunt from this area and that the aunt wired her the money for her fare.

The girl's father, Dinh Nguyen, a cabinetmaker who immigrated from Vietnam three years ago, could not be reached for comment.

An FBI spokesman in Tampa described the girl's parents as elated that she had been found. The FBI said it was not immediately known why the girl decided to make the California trip.