Conrad .. wow there is some info out there .. welcome to these boards!
Have you been on this flight? Any idea of cost in late December? Someone told me me there was a Chilean military flight that sometimes sold tickets .. amazing someone fairly major like Lan Chile would fly it! (I knew it would not be an Argentinian airline of course!!)
A week on the Falklands could not be too hard to take I suppose. I wanted to take a boat from there to South Georgia, which of course has no airstrip. I'll look into it tomorrow if there is a Lan Chile office in Australia (which I doubt) .. now midnight.
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~ Glen ~