We're 45 minutes from EWR and 60 from PHL. We fly out of whichever is cheapest. Lately that's been EWR for us. Its a bit easier for us to go out of EWR, but PHL is fine too. Parking is cheaper at PHL and we really like the lot we use there. EWR is ok for parking, and the lot we use is good too. If I had my choice, I'd choose EWR most of the time, as I'm not a big fan on US Air, and we fly SW out of PHL. SW doesn't have any non-stops to FL from EWR yet, so we have to fly United or Jet Blue.