If your Aer Lingus baggage didn’t arrive, report it immediately at the airport baggage desk or file a delayed baggage report online to get a Property Irregularity Report (PIR) number, which is essential for tracking and claims.
Use that reference to follow updates via the WorldTracer system and make sure your delivery address and contact details are correct.
If there are still no updates after a day or two, keep receipts for essentials you have to buy, as Aer Lingus must reimburse reasonable costs while your bag is delayed.
If the bag isn’t found after 21 days, it’s considered lost and you can file a compensation claim under the Montreal Convention, so follow up persistently with your PIR number and escalate by posting a complaint on Xolvie in order to bring attention to the issue and find a solution.
