TWA flew from PHL
on a nonstop basis for many years with 707s, 747s, 1011s and 767s at different times in their jet history. AA
picked up this route when they did the Heathrow deal with TWA, and I think flew it with 767s for a short time.....I am not sure.
Swissair certainly did fly to PHL
. For many years, the flight operated PHL
and DC10s, 743s, 743Combi and I think MD11s over the years operated it.