Aer Lingus (a phonetic rendering of the Irish Aer-Loingeas, "air fleet") is the flag carrier of Ireland. It operates a fleet of Airbus aircraft serving Europe, North America and northern Africa. It is Ireland's oldest and second largest airline after Ryanair. The airline has 5 bases in total, with its main being at Dublin (HQ location and Largest base) and Cork (2nd Largest base).
Aer Lingus is a former member of the Oneworld airline alliance, which it left on 31 March 2007. While Aer Lingus is not in an alliance it has codeshares with Oneworld, Star Alliance and SkyTeam members, as well as interline agreements with Aer Arann and JetBlue Airways. Aer Lingus has a mixed business model, operating a low fare service on its European and North African routes and full service, two-class flights on transatlantic routes. The airline is 29.4% owned by Ryanair and 25.4% owned by the Government of Ireland. It was floated on the Dublin and London Stock Exchanges on 2 October 2006, following prior government approval (the government previously owned 85% of the airline).

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