Originally Posted by
crewmeal
Sadly Perth isn't on BA's route network anymore. The nearest you'll be able to see it will be Singapore.
And bear in mind that will only happen if the OP gets very lucky and BA has to substitute a 744 for the 380 service BA11/12...a "sub" that has happened maybe once or twice in living memory.
( You are not likely to be see a 744 used as a "sub" for the 777-300 doing the BA15/16 through SIN to/from SYD because of the crewing requirements).