Santiago Chile to B.A. Argentina ??
 

which way bus?? or plane? how much is bus? or plane fair?

also maybe B.A. to Rio is that a good bus ride or should i fly?

any help would be nice thanks?

I think you should fly out to both places, they are extremely far away cities... don't know about prices. But I know the cheapest air-deals you can get from Gol. If not check out Aerolíneas Argentinas or Lan.