Last November, I went to IPC from LIM (Lima) and found award tickets using BA avios, but ended up paying cash instead cuz the price was actually not terrible (~$400 all in and I get AA miles) and the tax/fees on the avios ticket was quite high...

At that time, my research said that only LAN fly to IPC, and only from 2 airports - LIM and SCL. To make matters worst, the schedule is quite limited (not every day, at least not from LIM). I ended up only spending ~11 hours there, which was more than enough to see what I wanted to see.