If the system can’t clearly scan the luggage tag or the bag doesn’t move smoothly through the conveyor, it may be flagged for manual handling. While that sounds harmless, manual handling means your bag takes longer to process and increases the chance it won’t make it onto the plane in time—especially during tight connections.

Straps that wrap around the suitcase are another issue. If they loosen or shift, they can jam equipment or trigger safety stops, which airport staff must resolve immediately.

Extra tags create confusion, not clarity

Old luggage tags are one of the most common mistakes travelers make. Leaving outdated airline tags, hotel tags, or cruise labels on your suitcase can confuse scanners and staff alike.

Airline systems are designed to read a single, current barcode. When multiple tags are present, scanners may pick up the wrong one, sending your bag to the wrong destination. This is a leading cause of misrouted luggage, and it’s entirely preventable.