OK - I can now see availability for most of the flights I'm interested in. I'm not sure if the Avios price is worth paying for though, I'll have to compare them with cash tickets. One of the itineraries is MDZ-SCL-CJC, which comes up at 12,000 Avios + £50.Another two are CJC-SCL-IPC + IPC-SCL, but I cannot seem to get any availability on IPC routes.