The identification required to fly to Ireland depends entirely on your nationality and where you are flying from. If you are a British or Irish citizen traveling within the Common Travel Area (UK to Ireland), you do not legally need a passport, but you must have a valid form of photo ID that satisfies your airline's requirements, such as a driving license or an expired passport (check with the carrier first). For all other nationalities, including U.S., Canadian, and EU citizens, a valid Passport is mandatory for entry. EU citizens can also use a National Identity Card. It is important to note that Ireland is not part of the Schengen Area, so even if you are traveling from a country like France or Spain, you will undergo a passport check upon arrival. Visitors from certain countries may also require a Schengen-style visa or an "Electronic Travel Authorisation" (ETA), which is increasingly being implemented in 2026. Always ensure your passport has at least six months of validity remaining from your planned date of departure to avoid any boarding denials at the start of your journey.