Aer Lingus A321 EI-CPG operated Dublin – Knock as EI1979 this morning carrying Pope Francis for a visit to Knock Shrine. The aircraft returned Pope Francis to Dublin late in the morning as EI2018. Early in the evening at the conclusion of the Papal visit the aircraft operated Dublin – Rome Ciampino as EI2408 then positioned Rome Ciampino – Dublin late at night as EI2409.