Originally Posted by OpieTaylor

No, the non-originating NYC legacy AA traffic is heavily poached by PHL via the legacy USAir network.

They are not able to backfill rerouting their own traffic cheaper through PHL, so the void shows up in NYC.

They don’t have the same presence in NYC as Delta and United, but if the presence they do have were full all the time they would make plenty. If they were to make plenty with full planes, it would still be less efficient than the PHL and JFK demand being combined at the same airport like D and U.

They merged and rerouted the pax as cheap as possible and the void shows up where it is most expensive to route.

They need more slots to scale and backfill the void they created by rerouting their own traffic due to an inefficient merger.