Found

An irresistible set-up for a new series: An unidentified airplane appears out of nowhere. When the aircraft is boarded, its only occupants are babies; once they are removed, the pilotless plane vanishes. Jonah and Chip, now teenagers, discover that they were among the "airborne orphans," who seem to be somehow linked with missing children from history. Rather than forgetting the past, the two boys decide to venture into it, risking their survival to right the wrongs of time. Crisp time-travel adventure.