Last reviewed: October 13, 2026
Most checked bags are screened without being opened. But if TSA does need to look inside, what kind of lock you use makes a difference.
How TSA-recognized locks work
TSA officers carry master keys for locks made under agreements with Travel Sentry and Safe Skies. If your bag is inspected, an officer can open one of these locks and re-lock it. If you use a lock TSA can't open, TSA says it may have to cut the lock, and it is not liable for damage to locked bags opened for security reasons.
Tips
- Check the packaging. TSA-recognized locks say so on the package and usually show a red diamond (Travel Sentry) or red torch (Safe Skies) symbol.
- Choose a combination lock so you have one less key to lose.
- Look for TSA's notice. If your bag was physically inspected, TSA places a notice of baggage inspection inside.
- Lock the zippers and strap the bag. A cross luggage strap keeps the bag closed if a zipper fails during handling.
Source: TSA Travel Checklist. TSA rules can change, so check TSA's site before you fly.