In theory, you can fly Southwest from Philly to MBJ but you have to change planes in Chicago Midway or Orlando. What should be a 3 1/2 hour direct flight becomes 6+ hours. I realize a lot of travelers from the west coast and Canada have to change planes as a matter of course, but I guess I have been spoiled by the direct flights from the east coast. Plus, we have had some bad experiences with planes missing connections and getting stuck overnight.