I'm sorry if this has already been covered, but I couldn't find it. I'm just curious about why American Airlines requires the exact same routing to SDC or SDSB. You would think they'd be happy to put passengers into empty seats and to keep those passengers happy by providing more choices. I would think American would also generate more money by charging the $75.00 fee where more people would opt to take a different route to get between the same origin and destination points. What am I missing?