For me flying from San Francisco..AA all the way, usually to Miami or Charlotte..short layover and on to St Thomas by lunchtime and I can hop on a 2/2.30 ferry if I wish..although I now spend a night on STT but certainly dont have to. On my way back if there are any problems I can fly with AA to SFO thro a half dozens places ...JFK Philly,Dallas etc and get back ..no worries.