Brazil flights matrix
 

Does anyone have or know of a complete matrix of DL flights to Brazil, including city pairs and days of service? I'm struggling to create one...

Pull out the pdf timetable from delta.com and by looking at the return flights from the Brazilian destinations you should be able to easily infer the outbounds from the states. Or, for a slight fee, one of us would be pleased to assemble it.

Excellent!

There aren't that many Delta destinations in Brazil (although they're making an effort to challenge AA). A scheduling program like ExpertFlyer, where one can look at a week at a time, will make short work of this. Check some dates in January, too, to get the seasonal flights.