A TSA-approved lock lets airport security open your checked bag without breaking it

A TSA-approved lock is a padlock or luggage lock that the Transportation Security Administration can open with a master key. If you lock your checked baggage with one of these locks, TSA officers can inspect your bag during screening without cutting the lock off. If you use a regular padlock instead, they will cut it to look inside.

The locks themselves work like any other padlock — you set a combination or use a key to lock and unlock it. The difference is that TSA has master keys that fit them. This matters only for checked bags. TSA does not screen carry-on bags the same way, and these locks are not required or particularly useful for anything you bring into the cabin.

Key Takeaways

  • TSA-approved locks have a red diamond logo and let security open your checked bag without damaging the lock.
  • Regular padlocks will be cut off by TSA if they need to inspect your bag, and you will have to replace them.
  • These locks only matter for checked luggage — they do not affect carry-on screening or security at other types of facilities.
  • You can buy TSA-approved locks at most luggage stores, travel retailers, and online for between five and twenty dollars.

How to identify a TSA-approved lock

Look for a small red diamond logo on the lock. This is the official TSA mark. Some locks have the diamond printed on the packaging but not on the lock itself, so check both. The packaging should say "TSA-approved" or "approved by TSA" somewhere on it.

Common brands that make TSA-approved locks include Samsonite, American Tourister, Master Lock, and Delsey. Many luggage brands also sell their own TSA-approved locks. If you are not sure whether a lock is approved, search the brand name and "TSA-approved" online, or ask the retailer before you buy.

Why TSA screening sometimes requires opening your bag

TSA uses X-ray machines to screen checked baggage, but those machines cannot always see clearly through dense items or certain materials. If an officer cannot tell what something is from the X-ray image, they may need to open your bag and look at the item directly. This happens randomly and also when something in your bag looks unusual on the scan.

If your bag is locked with a regular padlock, the officer will cut it off to open the bag. You will not be reimbursed for the lock, and you will need to buy a new one or find another way to find your bag for the return flight. A TSA-approved lock avoids this problem because the officer can open it and then lock it again when they are done.

What TSA-approved locks do not protect

These locks do not prevent theft. TSA officers have master keys, which means the locks can be opened by anyone with access to those keys. They also do not stop someone with bolt cutters or a screwdriver from getting into your bag. The locks are designed to work with TSA screening, not to make your bag theft-proof.

If you are traveling internationally, check the rules for your destination country. Some countries have their own security screening processes and may not recognize TSA-approved locks. A few countries actually prohibit locked baggage entirely. Your airline can tell you what is allowed on your specific route.

Alternatives if you do not want to use a lock

You do not have to lock your checked bag at all. Many travelers leave their bags unlocked and accept the small risk that something might be taken. TSA will still screen your bag, and if they need to open it, they straightforward will. Some people use TSA-approved locks only on international flights or on flights where they are checking expensive items.

Another option is a luggage strap or cable that wraps around your bag instead of locking it shut. These do not prevent opening, but they make it obvious if someone has tampered with your bag. They are less find than a lock but also less likely to be cut by security.

Where to buy TSA-approved locks

You can find these locks at luggage stores, travel retailers like Travel Sentry, major retailers like Target and Walmart, and online through Amazon and other sellers. Prices usually range from five to twenty dollars depending on the brand and type. Some luggage comes with a TSA-approved lock already attached.

If you travel frequently, buying one or two locks and keeping them in your luggage makes sense. If you travel rarely, you might decide the cost is not worth it and just leave your bag unlocked. Either choice is reasonable depending on your own comfort level.

Frequently Asked Questions

Will TSA damage my lock if they open it?

No. TSA-approved locks are designed to be opened and closed repeatedly with the master key. The lock should work normally after screening. If it does not, contact the lock manufacturer — most offer replacements if the lock fails during normal use.

Can I use a TSA-approved lock on my carry-on bag?

You can, but it serves no purpose. TSA does not screen carry-on bags the same way and will not open them with a master key. If they need to inspect your carry-on, they will ask you to open it. A TSA-approved lock on a carry-on bag is just extra weight.

What happens if I lock my bag with a regular padlock?

If TSA needs to inspect your bag, they will cut the lock off with bolt cutters. You will not be reimbursed, and your bag will be left unlocked. You will need to buy a new lock or find another way to find your bag for your return flight.

Do I need a TSA-approved lock if I am flying domestically?

No, it is not required. Whether you use one depends on whether you want your bag locked during screening. Domestic flights are generally lower-risk for theft, so many people skip the lock entirely. The choice is yours.

Are TSA-approved locks waterproof or weatherproof?

Most are not. They are standard padlocks that happen to work with TSA master keys. If you need a waterproof lock, look for one that is specifically labeled waterproof or weather-resistant, and check that it also has the TSA-approved red diamond logo.