I have yet to be on a flight from AA in the last year which is not delayed or cancelled. I can safely say they are operationally incompetant these days. There are numerous reasons of course for each delay I've had and cancellations seem to happen on a whim with completely fake reasons that they always give. Mostly notably recently they cancelled an SFO-JFK leg with the reason of "due to PREVIOUS weather". Yes they can go back in time now and cancel a flight. This incoming from JFK was delayed 3 hours, but in my opinion that is no reason to cancel. The SFO departure would only have been delayed 1.5 hours. Yesterday I was content to see my ORD->SFO flight on time with the inbound flight from PHL on time as well. At T-2hours they switched the incoming flight to something from DFW that even if it was onetime would have delayed my flight by 30 min. Of course it was delayed and I ended up with a 1.5 hour delay. So far AA has failed to meet any commitments for me. F-!