seems the only thing that does not change is the airline prefix
Actually if you look in the example Allocator quoted above you will see the Airline prefix does change - BA-BAW
Why do they do that?
I had the same issue a few weeks ago when a friend of mine flew to Australia.
I input the flight details I had directly from the British Airways website and the airport monitors I believe and wondered why her flight was delayed.
Realised afterwards that BA should have been BAW...:-(
Didn't make the same mistake on her return flight - had a list like the British Airways 'Catch All' one referred to above but also added the Qantas & Singapore Airlines flight numbers...one heck of a list for one flight!
Kind regards,
-=Glyn=-