Originally Posted by
EI-BUD
This mention of dub airport use by NI customers comes around each year. Can anyone explain precisely how DUB measure this?
Do all the airlines share the booking data with DAA??
No, the airlines don't share booking data - and anyway, booking data is an imperfect indication of where people are actually coming from.
The DAA conducts passenger surveys of departing passengers going through its airports, a bit like the UK CAA. One of the questions is along the lines of "what county are you coming from today?" This is where the information comes from.
The other main difference between DAA and UK CAA stats is that the latter are available to third parties while DAA keeps its stats to itself.