Never Use a Regular Padlock Instead of a TSA Luggage Lock

It may seem harmless to grab a regular padlock from the drawer at home and snap it onto your suitcase. After all, a lock is a lock, right? For air travel, especially on international flights, this common habit can cause unpleasant surprises. A TSA Luggage Lock is made for a specific situation: allowing security officers to open and relock your bag without damage. A regular padlock has no such feature. When a regular lock is found on a checked suitcase, the outcome is almost always the same — the lock gets removed by force, and the bag may suffer as a result.

What Happens Inside the Security Area

After you check your bag, it travels on a conveyor belt into a secure area. X‑ray machines create images of the contents. If something inside looks unclear, or if a random inspection is selected, an officer must open the bag. They look for the small red diamond symbol that shows a lock is TSA‑approved. If they see a regular padlock, they have no key and no override tool. Their procedure is to cut the lock off. This happens every day at airports around the world. The officer uses a tool that shears through the lock’s shackle. The cutting action can scratch the zipper, bend the zipper pulls, or even tear the fabric near the lock. After the lock is removed, the officer inspects the bag, then closes it as much as they can. The bag continues to your destination without a lock.

The Real Cost of a Cut Lock

Losing a lock is a small annoyance. The bigger problem is the condition of your suitcase after the inspection. With the lock gone, the two zipper sliders may not stay together. Some travelers arrive to find their suitcase held closed by a piece of tape or a rubber band placed by security. In other cases, the bag opens during handling, and items fall out onto the tarmac or into the cargo hold. Replacing a lost lock is easy, but replacing lost clothes, toiletries, or souvenirs is not. A regular padlock might have cost very little, but the damage it causes can be much more expensive in terms of time and frustration. Using a TSA Luggage Lock from the beginning avoids this chain of events entirely.

Where Travelers Get the Wrong Idea

Some people think, “I am not flying to the United States, so I do not need a special lock.” This is a common misunderstanding. Many other countries have adopted the same inspection system. Canada, Japan, Australia, South Korea, and Europe allow security officers to open approved locks. Even on a domestic flight within your own country, random checks can happen. The only way to be certain that a lock will not be cut is to use one that carries the TSA approval mark. A regular padlock offers no guarantee. Another mistaken belief is that wrapping a bag in plastic film or using zip ties will protect it. Security officers can and will cut those as well. The safe approach is to assume that any checked bag could be opened, and to prepare accordingly.

What to Do With Old Regular Padlocks

Regular padlocks are not useless. They work well for many purposes. Use them on lockers at a gym, on a storage unit, on a garden shed, or on a bicycle. They can also secure a backpack when the backpack stays with you on a train or bus. For checked airline luggage, however, they are a poor fit. Keep a few regular padlocks for home use, and buy a dedicated TSA Luggage Lock for travel. Some travelers carry both types — one for their hotel room safe and one for their suitcase. Just do not mix them up. Before zipping your bag, take a look at the lock in your hand. If it does not have a keyhole with the TSA symbol, put it back in your pocket and get the correct one.

Building a Simple Habit

The habit is easy to learn and remember. When you buy a suitcase or prepare for a trip, check that every lock you intend to use has the red diamond mark. If you are borrowing a lock from a friend, ask to see the symbol. If you find a regular padlock attached to your bag at home, remove it and store it elsewhere. This small action takes a few seconds but saves a lot of trouble. A TSA Luggage Lock is not a special or expensive item — it is a standard tool for modern air travel. Using anything else is taking a risk that does not need to be taken. Once you make the switch, you will never have to wonder whether your lock will still be on your bag when you land.