Originally Posted by Consultette

OP - when is your flight?

If soon (i.e. in times where there are poor weather) I would keep aware of travel waivers and call as soon as one is issued which would apply to change your flights/routing. Being aware of travel waivers allows you to manage this proactively vs. waiting for your individual flight to delay/cancel.

I'm not the biggest fan on the PHL airport because the slightest bit of weather seems to turn everything into chaos.

45 minutes is cutting it for that connection but might be doable. The one thing that might be in your favor is that half my US Airways flights out of Philly end up delayed.