[Butch Cassidy Slept Here]

Perhaps, in ten years, US Airways ("US"), if they haven't merged or gone out of business by then, may figure-out how to allow their customers to make connections in Philadelphia ("PHL") without problems. Until then, NEVER book a US flight, with a PHL connection! In fact, avoiding US alltogether, if possible, is the best course.

To Presque Isle, it looks like booking an interline ticket--Continental (DAY-Newark-BOS), then US (BOS - PQI), would probably have been less chaotic, but, most certainly, more expensive. If you had an extra 4 hours, the best routing would probably have been Air Canada to Fredrickton, New Brunswick (via Chicago and Toronto), then driving 3 to 4 hours to PQI.