The airline had launched an internal investigation
after the existence of the photos was first reported on Chinese blogs a week ago.
The investigation revealed the photos were not a malicious stunt designed to hurt the company, as earlier suspected.
Chief executive John Slosar confirmed the unidentified couple were no longer employees of the company, DPA
news agency reports.
''I find any behavior that recklessly soils the reputation of our team members as totally unacceptable,'' DPA news agency quoted Slosar as saying.
''That's why we moved as swiftly as we could to ascertain the facts of the case, and to take decisive action.''
Slosar also emphasized that the passenger jet was not in flight when the incident took place.
The pair in the cockpit sex romp were said to be a couple with the pilot claiming the pictures had been stolen from his personal computer and distributed online without his knowledge.