During a 10-year career with Aer Lingus, Stack served in a variety of positions, including sales manager for the North of England and South of England.
Following his stint at Aer Lingus, he joined the Irish Tourism Board, specializing in meetings and incentives travel.
He joined Ireland specialist CIE Tours in 1990 as president and was promoted to managing director in 2007. He retired as CEO in 2016.
