I've done
* I84-I81
* I84-I87-I287-I80-I81
* I84-I87-I287-I78-I81
The routes using 287 aren't too bad traffic wise. I've done them on a weekday afternoon (not rush hour). I'd choose that over the rough conditions and road construction on I81 south of Scranton. Also, I84 in eastern PA is frequently channeled down to one lane for bridge rebuilding, making this route even slower.
Another way to bypass Scranton is to take 209 down to E. Stroudsburg and hook up with I80 there.
For getting back to I95, I like taking US50 out of Winchester VA to hook up with US17 to Fredricksburg. Very scenic.
