Yes, you can absolutely purchase the Lisboa Card directly at the Lisbon Humberto Delgado Airport (LIS). Upon arrival, you should head to the "Ask Me Lisboa" tourist information counter located in the Arrivals Hall, which is generally open daily from 7:00 AM to 10:00 PM. You have the option to buy the card on the spot or pick up a physical card if you purchased a voucher online in advance. Buying it at the airport is highly recommended for 2026 travelers because the card includes unlimited free travel on the Metro, which connects the airport to the city center, as well as on all Carris buses and trams. This allows you to start saving money immediately on your first journey. The card also provides free entry to 39 attractions, including the Jerónimos Monastery and the Belém Tower. Just remember that the card’s validity (24, 48, or 72 hours) only begins the moment you first "tap" it at a transport reader or an attraction entrance, not at the time of purchase at the airport desk.