What are the options for buying an airpass in South America for, say, 5 trips over a 6-month period?

Question

I'm arriving in Brazil and want the option to go to Mexico, Venezula.. and so on.

Answer 1

Mexico is not on South America

Answer 2

The only airline I've seen selling those is Lan Chile. Lan has Lan Chile, Lan Peru. Lan Argentina, Lan Ecuador and they also go to Mexico via Lan Peru and Lan Chile. Get in touch with them via their web page or offices and check the price. The other airlines I guess might have them is either Copa or Taca.

Answer 3

Check out the websites for

COPA

TACA

Lan Chile

They are the local airlines for south and central america and probably offer airpasses.  Amazing, amazing countries out there, make sure you see as much as possible!