Originally Posted by ashill

Huh? PHL is AA’s big hub to Europe due to its obvious geographic advantage over other AA hubs without strong slot or gate constraints. If DFW were AA’s main hub to Europe, 1/3 of the country by area and well over half the country by population would have to backtrack a long way.

Originally Posted by hirohito888

As noted by poster above, what other viable hubs would AA have to do TATL? DFW and MIA would be too much backtracking and JFK doesn't have enough feeder flights. AA is left with ORD and PHL and perhaps CLT. Even DL is looking beyond JFK and have several TATL routes out of BOS.