The not so popular South America to/from Asia sweet spot is dead too. Last year I did:
- UA J HND-IAD-GRU for 70,000 miles.
- LH F GRU-FRA-PVG-TPE for 148,500 miles. Double LH F (GRU-FRA-PVG) and BR J (PVG-TPE).
- Also booked ET J GRU-ADD-ICN-NRT for 93,500 miles but ended up cancelling it to book LH F.
Now South America to Asia J is 125,000 miles and has very limited availability.
No idea how much F will cost. Haven't seen it available lately.