I've heard about the glory days of charter flights, but have never seen one out of Philly. Flew a charter to Cancun in the late 90's out of Newark, that was basically packed with spring break partyers. I guess post 9/11 has changed the economy for charters and airline competition. Apple Vacations used to have it's own airline called USA 3000, that provided no-frills flights to Caribbean destinations. Also, as recently as a year ago, Frontier had low-cost flights from PHL to MBJ. For some reason, they cancelled that route this year. Coincidentally, that is when AA's fares skyrocketed (i.e. no more competition).