Author: Mort (---.tampabay.res.rr.com)
Date: 11-18-08 16:01
It's definitely pushing it, though barely possible I suppose.
When we were there last Jan, we took the 1pm ferry... but we had a 6pm flight. Our taxi took us on hour and fifteen minutes all told from the ferry dock to SJU because of traffic.
Jan 4 is in a holiday period... right between Jan 1 and Jan 6 (a holiday in PR). Traffic is likely to be heavy for a Sunday.
You might easily end up arriving at SJU only 30 minutes (or less) before your flight takes off.