I am interested in understanding which US airports have what airlines. One could visualize this with a spreadsheet:
This examples shows that Southwest flies out of Midway but not O'Hare. Delta flies out of O'Hare and not Midway. Both fly out of Baltimore.
I am not interested in a global \ US map that shows routes destinations of a particular airline: I am not interested in using this data from the passenger use-case. A spreadsheet would be preferable although, I suspect that if the data is out there, it is stored in a RDBMS.
Wondering if there is clever way to tease this info out of http://openflights.org/