You should never simply throw away your boarding pass in a public trash can, especially if it contains a printed barcode or QR code. Your boarding pass is a treasure trove of personal data; a simple scan of that barcode can reveal your full name, frequent flyer number, PNR (booking reference), and even future flight details. Malicious actors can use this information to access your airline account, cancel your future trips, or steal your miles. Even a photo of a boarding pass posted on social media can be dangerous. In 2026, the safest practice is to use a digital boarding pass on your phone, which leaves no physical trail. If you must use a paper pass, you should keep it with you until you get home and then shred it or destroy the barcode completely. If you are at the airport and need to dispose of it, try to tear the barcode into several small pieces so it cannot be reconstructed or scanned by anyone who might find it in the bin.