I am in the early stages of planning a trip to South America, so no dates fixed yet. The preferred routing would be the direct LHR-SCL in J. However, fares always seem to be very high and alternatives offered on ba.com are IB via MAD.

Other than using IB, are there likely to be any reasonable ex-EU options? Also, I am curious why ba.com does not throw up any routings via GRU or EZE, for example. Is LATAM worth a try?

Any opinions or advice gratefully received.