Barcelona Airport provides luggage storage lockers through Excess Baggage, which you’ll find at both terminals. The service costs €12 for 24 hours, and the company charges a €10 penalty if you lose your receipt. You’ll also find railway luggage storage at the Sants train station. Look for the sign that reads “Consigna” on the below-ground-level car park. The service costs €10 per day for items that measure 210 cm or less after adding up length, width, and height. Oversized items like sporting equipment are €15 for each 24-hour period. The Consigna hours are from 7 am to 11 pm daily.