Taca.com definitely isn't cooperating, but, if you mess around in Mobissimo, it seems that the fares come up on Orbitz and other sites.
After the $800 deal lapses, it goes back to $1200 or so. (I wish I could find the actual validity dates for the fare, but haven't tracked them down.)
Originally Posted by
notsosmart
Taca.com says
For all dates in both Y and J yet the rules posted seem to permit the routing. Schedule says they fly only on certain days of week, but even when searching those no avail.