Kirk Frederic Forest, 39, pleaded guilty in January to the threat charge and has been in the custody since. A condition of his sentence is that he undergo inpatient mental health counseling during his probation, prosecutors said.
Forest was accused of walking the aisle of the Anchorage-bound flight from Seattle holding a Bible and proselytizing to fellow passengers about God and Jesus.
When confronted, Forest told flight attendants he had a bomb and asked one of them if he should blow up the aircraft.
Forest was restrained and the aircraft landed safely. No bomb was on board.
Important warning about e-mails purporting to be from the adn.com staff.