Aer Lingus already offers transatlantic services from Cork. You can book the US flights from Cork on their website which automatically books the Aer Arann connecting flights to/from Dublin.
This connecting service plays a part in helping Aer Arann sustain their Cork-Dublin flights in the face of the massive competitive onslaught of Ryanair on the Cork-Dublin route. Its a great time for the frequent flyer between Cork and Dublin
