In 2026, most major airlines and airports maintain a "lost and found" retention period of 30 to 90 days. Items left on a plane are usually handed over to the airline's specific baggage service or the airport's central lost property office at the destination. Valuable items like electronics, jewelry, and passports are often kept for a longer period, sometimes up to six months, before being turned over to local law enforcement or liquidated. If an item remains unclaimed after the storage window, it is typically sold at a public auction, donated to charity, or responsibly recycled. For 2026 travelers, the "pro-tip" is to report a lost item within the first 24 hours via the airline's digital portal, as the chances of recovery drop significantly once the item is moved from the airport terminal to a centralized regional storage warehouse.