THESSALONIKI, Greece — A man who was partially sucked out of a dislodged window on a flight from Greece to Germany on Friday was pulled back inside the aircraft by fellow passengers.

A Ryanair flight from Thessaloniki, Greece, to Memmingen, Germany, returned shortly after takeoff after a passenger window reportedly became dislodged in flight.

Witnesses told local media the man, said to be a Serbian citizen in his 60s, was left hanging head first out of the window as far as his shoulders for several minutes, before other passengers on the M...