OK, I've got tickets for our vacation this summer to Scotland. And then they change them on me - just slightly, but now I'm concerned about connection times.

We are flying into PHL from JAX on US Airways. Looks like that means we come into Terminal B or C.

Our outgoing flight is on US Airways, but is international - could be Terminal A West or B. Obviously, Term B would be preferable, but they haven't asked me my opinion yet.

Question: We have 1 hour and 20 minutes to connect. All luggage is interlined (same ticket). Will we be OK if the flight is on time? How much leeway do we have if the flight is late? It's a 5:30pm flight out of JAX, and I know later flights are more likely to run late.

Thanks!