Should I lock my luggage?

When It Makes Sense

• Good fit: You’re traveling on a domestic flight within the U.S. where airline policies allow passengers to lock their checked bags with TSA‑approved locks, and you want to deter opportunistic theft.
• Good fit: You’re checking valuable but non‑fragile items (e.g., electronics, cameras) and you have a lock that can be opened by TSA agents without damaging it.

When You Should Avoid It

• Warning sign: You’re flying internationally to a country where security staff rarely have TSA‑compatible tools, which could lead to lock removal or damage to your luggage.
• Warning sign: Your bag contains items that might require inspection (e.g., liquids over the limit, prohibited goods); a lock could delay the process or cause the bag to be opened forcefully.

Pros and Cons

Pros

• Provides a visible deterrent against casual tampering or theft while your bag is in transit.
• Helps you keep your belongings organized and signals that you’ve taken an extra step for security.

Cons

• If the lock isn’t TSA‑approved, security officers may cut it off, leaving a broken lock and possibly delaying baggage handling.
• Locks add a small amount of extra weight and can give a false sense of security, leading travelers to overlook other protective measures.

Decision Checklist

• Is your lock TSA‑approved or otherwise recognized by the airports you’ll travel through?
• Are you checking items that are high‑value but not prohibited, and would a lock meaningfully reduce theft risk?
• Do you have an alternative way to protect your luggage (e.g., zip‑tied straps, luggage tags) if the lock is removed?

Alternatives to Consider

Instead of a traditional lock, you can use zip‑tied straps that security can cut without damage, or apply TSA‑approved lockable luggage tags that are easier for agents to open. Some travelers opt for soft‑sided bags with built‑in cable locks, or they simply rely on airline baggage tracking and travel insurance for high‑value items.

Final Recommendation

If you’re on a domestic U.S. flight, have a TSA‑approved lock, and are protecting valuable but non‑fragile items, locking your luggage is a reasonable extra precaution. For international trips, especially to regions where TSA‑approved locks are uncommon, or when you’re carrying items that may trigger inspection, it’s wiser to skip the lock and use alternative security measures. Always check airline and airport policies, and consider insurance for high‑value baggage. For any concerns about security regulations or liability, consult the airline or a travel‑security professional.