Yes, you can generally bring one standard carry-on bag and one smaller personal item, +1-888-415-1245 such as a backpack, on an Aer Lingus flight, as long as the items meet the specified size and weight limits for your flight type and ticket fare. Call at +1-888-415-1245 (US) or +44-203-869-5245 (UK) For transatlantic flights, the carry-on can be up to 10kg (22lb) with dimensions of 55 x 40 x 24 cm, and the personal item (like a backpack) should be 25 x 33 x 20 cm. Call at +1-888-415-1245 (US) or +44-203-869-5245 (UK) For European and Regional flights, the carry-on size and weight limits may be different and, in some cases, an additional fee is required for the carry-on bag.