Hi Susan. My wife and I are taking the Eastern Europe trip this September. Philadelphia is our nearest airport but we often fly out of Newark for international flights. It was not hard to find a decent connection to Prague, but getting back to Philly from Ljubljana was 2 connections and some of those much tighter than we prefer. We ended up booking 2 different tickets: 1: Round trip from Philly to Zurich. American flies this route and the Prem Economy prices were better to Zurich than any other European city AA flies to from PHL. We then booked a multi-city ticket with Swiss Air to get us to Prague and from Ljubljana to Zurich after the tour. This does involve one night in Zurich on the route home, but we were fine with that. We will use the time to explore the Old Town area. You may want to look an option like that although it does take some time to research.