Changing your travel plans with Aer Lingus may come with a cost, depending on your fare type and destination. Flexible fares often allow modifications without penalties, while saver fares might include a charge. It’s important to review the specific conditions attached to your ticket. The Aer Lingus change fee varies by route and timing of the change. Making changes online usually costs less than doing so at the airport or through customer service. Always check the airline’s official policy before making any adjustments.