If that's the case about Kerry then they need to update their website, it currently says:
http://www.kerryairport.ie/airportfacilites/index.htm
"Kerry Airport Facilities
bringing the world to the heart of Kerry
Airport Development Fee
In order to ensure future growth, an extensive development programme has been undertaken to expand facilities at the Airport. To fund this expansion, the Airport has introduced the Airport Development Fee of 6 euros per outbound passenger. This price is covered in the ticket price. "