I am about to book an agenda, and I was curious if others take different airlines on the same trip. I live near ACY, but that reswtricts me to Air Tran & Spirit. I try to avoid PHL (for obvious reasons), so I am going to SAN, and the times worked out great to take Air Tran RT, ACY-ATL, and DL RT, ATL-SAN. I leave plenty of connection time, but the looming thought is always if there is a substantial delay in one leg, I am SOL because each carrier is only concerned with their ticket. Any one else book like this?