Cuzco-Lima-Santiago-Easter Island - all on LAN, fare around $735.
The problem is that the flight arrives in Santiago at 00:35 and leaves at 09:05. So I thought - why not split the journey and nip off to Santiago for a bit. So I googled Cuzco to Santiago, and the best fare I got (around $700) was going a tortuous route via Lima, Iguazu Falls and Sao Paulo! The direct route via Lima came in at around $780... more expensive than flying on to Easter Island.
Out of curiousity, I checked what a one-way ticket from Santiago to Easter Island costs, and it came to $461.
Please can someone explain the logic behind all of this?