The answer is no, for several reasons.
existed as a "hub" for AA
during a period when it was relevant and sensible. Now, that purpose has largely become frivolous. AA
simply wanted to connect traffic between the Eastern seaboard and the Caribbean Islands, both high-volume resort destinations and smaller islands, over SJU
, using hub-banks. The traffic was fairly high-yielding back then. Moreover, the SJU
buildup largely predated the acquisition of Eastern's hub at Miami, and so as Miami has been built up, many of such islands and high-volume resort destinations have been connected to the MIA
hub, thus rendering SJU
2. The LCC competition by ways of NK
have severely infiltrated the Caribbean market. No way will DL
ever want to go up against that. B6
in particular has invested in a wise strategy of serving the secondary/smaller airports in Puerto Rico to appeal to O&D/VFR traffic heading between the Island and the East Coast.
3. Somewhat similar to point #1, why would DL
want to create a hub in the middle of the Caribbean that would largely replicate what it has in ATL
confidence is silent. insecurities are loud.