From Aer Aranns' website
"Statement in relation to suspension of Dublin-Belfast service
20th August 2003 Aer Arann today announced that it is to suspend services on the Dublin-Belfast route effective from Monday, August, 25th. While disappointed with the development, the consistently low load factors experienced on the route necessitated the airline's decision to suspend services. Aer Arann will monitor market conditions over the coming months to assess whether a commercially viable service can be reinstated in the
longterm."