Wow-it just so happens I'm going from SAT-BOM in May. I am going business class (not F), but I eventually chose *A the whole way for the EQM's and am going SAT-YYZ on United in F, then YYZ-FRA on AC (new XM business class with fully flat bed) and then FRA-BOM on LH and then same route back but YYZ-NYC instead of to SAT. All/in was ~ $5400, not bad IMO