A FedEx ground crew worker may have thought he was dreaming when he suddenly found himself at cruising altitude aboard a cargo jet some 600 miles from home.

Officials said the worker, whose name wasn't released, fell asleep inside a Lubbock, Texas-bound aircraft while loading it in Memphis, Tennessee, and woke up mid-flight, Fox 34 reports.

Kelly Campbell, director of Lubbock Preston Smith International Airport, told The Commercial Appeal the man knocked on the cabin door and spoke with the pilots, who instructed him to sit in a jump seat in the cargo area and prepare for landing.

"This is very unusual," Campbell told the publication, adding that the man was interviewed by law enforcement, but wasn't arrested.