Three Hawaiian Airlines flight attendants are being hailed as heroes after they flagged a group of three young girls suspected of being human trafficking victims.

Flight attendant Wesley Hirata told KITV he sensed something wasn't right when an older Asian man and three Caucasian girls boarded a flight from Los Angeles to Honolulu.

Hirata enlisted the help of other flight attendants who questioned the girls - revealing that one of them was underage and all three had the same name listed on their passenger documents.

Three Hawaiian Airlines flight attendants are being hailed as heroes after they alerted police to a group of three suspected human trafficking victims on a flight from Los Angeles to Honolulu

The attendants informed the captain of the situation and alerted security personnel in Honolulu.

Upon arrival in Hawaii the group was questioned by local police, who referred the case to the FBI. They investigated and soon established there had been no wrongdoing and the man was actually known to the girls and travelling legitimately with them.

Regardless, Hirata has said he's pleased he followed his instincts and urges others in similar situations to do the same.

'Trust your gut and prior experience [and] report the situation without alarming or confronting the passengers in a suspicious manner,' Hirata said.