sentences:  These factors led to the liquidation of Iona National Airways Limited in 1995, having flown its last flight on 14 December 1994.Following the demise of Avair in February 1984 Iona operated a number of their regional routes, such as Dublin-Sligo.When Ireland West Airport Knock was officially opened on 30 May 1986, Peter Cahill flew the Taoiseach Charles Haughey and Pearse Cahill, from Dublin to Knock to perform the official opening ceremony in the presence of Monsignor James Horan.