Aer Lingus Baggage Policy allows passengers to bring one cabin bag and a small personal item for free. Checked baggage fees vary by route, weight, and class. Travelers can pre-pay for checked bags online for discounts. Overweight or oversized bags may incur additional charges. Each fare type includes different baggage allowances, so it’s important to review your ticket details. Aer Lingus also accommodates sports equipment and musical instruments with specific guidelines.