[WildUtah]

Try pricing tickets regularly between Latin America and Asia. My peer groups buys a lot of such tickets and the AeroMexico tickets that fly with a change of planes in MEX and go on to PVG and NRT with no USA transfer cost about US$500 more than tickets that change planes in LAX, SFO, DFW, and SEA. YVR is usually priced in between but sometimes Air Canada has deals.

There are no other flights directly between Asia and Latin America (unless you count the EK GRU-DXB flight), though NH may be flying to MEX soon.