Five days after being registered as an airline, the inaugural Aer Lingus flight takes off from Baldonnel Airfield just outside of Dublin on May 27,1936. Five passengers are on the six-seater De Havilland 84 Dragon, named Iolar, bound for Bristol (Whitchurch) Airport, United Kingdom.

Aer Lingus, the flag carrier airline of Ireland and the second-largest airline in Ireland, is founded on April 15, 1936, with a capital of £100,000. Its first chairman is Seán Ó hUadhaigh. Pending legislation for Government investment through a parent company, Aer Lingus is associated with Blackpool and West Coast Air Services which advance the money for the first aircraft, and operate with Aer Lingus under the common title Irish Sea Airways. Aer Lingus Teoranta is registered as an airline on May 22, 1936. The name Aer Lingus is an anglicisation of the Irish form Aer Loingeas, which means Air Fleet. The name is proposed by Richard F. O’Connor, who is County Cork Surveyor, as well as an aviation enthusiast.

Later that year, the airline acquires its second aircraft, a four-engined biplane De Havilland 86 Express named “Éire”, with a capacity of 14 passengers. This aircraft provides the first air link between Dublin and London by extending the Bristol service to Croydon. At the same time, the DH84 Dragon is used to inaugurate an Aer Lingus service on the Dublin-Liverpool route.

Aer Lingus currently operates an all-Airbus aircraft fleet serving Europe, North Africa, Turkey, and North America. The airline’s head office is on the grounds of Dublin Airport in Collinstown, County Fingal, Ireland.