Regardless of tax i should have added what Dublin has is competition both in Airlines and Tour Operators which all help to make flying from Dublin competative. I know of at least one tour package company that maintains that NI pax account for two of there flights eack week to Turkey from DUB. But if cost was not the main factor I would much rather support NI airports and the staff that work there, a point that is never mentioned on here. Support to NI airport staff.