That is cheap! I did a cursory check on UA and everything was $1,000 plus connecting through IAD, EWR or CLT (as you said). I may go for a cheap airline. SJU is cheap! I just assumed being that close, it would be a great time to jump on over to the caribbean. I think it might be cheaper to fly from O'Hare. I can get to HI from MCO cheaper than getting to almost any place in the caribbean on UA.