So after quite a bit of research tonight the best deal I found is through Ethiopian Airlines. From Hong Kong to either Rio or Sao Paulo it's USD 1,250 one way and then I could fly from Rio or Sao Paulo to Fortaleza for about USD 250 so for a grand total of ~USD 1,500 I'd make it from HKG to FOR.
What do you guys think? Reasonable price or do you think I could do much better?