With its distinctive green shamrock, Aer Lingus is a global symbol of Ireland. The name comes from the Irish word 'long' which means ship. So Aer Lingus roughly translates as 'air fleet'. The airline was founded in 1936.
This airline is not currently a member of the main airline alliances. It may operate some routes under codeshare agreements (where partner airlines sell seats on the same aircraft, each using its own flight number). Your airline can advise whether this applies to any part of your journey.