Runs the parts of an airline that are not the aeroplanes.

Network planning, scheduling, crew rostering, revenue management, ground operations: an airline is a logistics business with a very expensive fleet and almost no margin. The decisions are commercial but the constraints are operational and legal, and a schedule that ignores crew duty limits or turnaround times will fall apart in a week.
Most large carriers run one, rotating through commercial and operational departments.
Dispatch, ground operations or crewing experience is a strong route in, and it shows.
Transportation, storage, and distribution managers · US Bureau of Labor Statistics, Occupational Outlook Handbook, May 2024 wages and 2024–34 projections.
The nearest published occupation, covering logistics and distribution management across every industry rather than airline commercial management specifically.
Airlines run on margins thin enough that a good year and a bad year look similar from the outside. Your decisions are commercial and their consequences are operational, which means a schedule that looked clever in a spreadsheet can fall apart in a week and everybody will know whose it was.