Reach the checkpoint ready, not rushed.

Travelers 18 and older need an acceptable credential for domestic screening. A REAL ID-compliant state license or ID is one option; passports and several other federal credentials are also accepted. The name on your reservation should match the ID you plan to show.

Some checkpoints accept participating digital IDs, but keep your physical credential with you. Confirm the current list on TSA’s acceptable identification page.

Each standard liquid, gel, cream, paste, or aerosol container must be 3.4 ounces (100 milliliters) or smaller. Fit those containers in one quart-size clear resealable bag, with one bag per passenger. Larger containers generally belong in checked baggage.

Medically necessary liquids, breast milk, formula, and certain other essentials can be exceptions and should be declared for separate screening. Review TSA’s liquids rule before packing an exception.

Knives, many tools, firearms, realistic replicas, and flammable materials have item-specific rules. “Allowed” can also depend on whether something is in a carry-on or checked bag. The final decision at a checkpoint rests with the TSA officer.

Search the official What Can I Bring? database instead of relying on a general packing list. Firearms require a separate, strict checked-baggage process and may also be subject to airline and local rules.

Your boarding pass must show the TSA PreCheck indicator to use the lane. Screening procedures can change, and officers may direct any traveler to additional screening—follow the instructions at your checkpoint.

In a standard lane, electronics larger than a cell phone are commonly removed from the carry-on and placed in a bin with nothing above or below them. Avoid burying laptops, tablets, cameras, and game consoles under tightly packed clothing.

Empty pockets before reaching the scanner, keep cords organized, and do not pack a power bank in checked baggage—spare lithium batteries and power banks belong in carry-on baggage under airline and FAA limits.

Medication is allowed, including medically necessary liquids beyond the usual limit. Tell the officer about liquid medication or medical equipment before screening begins. Clear labeling can make inspection easier, though TSA does not require medication to be in prescription bottles.

TSA Cares provides screening assistance for travelers with disabilities, medical conditions, and other special circumstances. Submit a request at least 72 hours before travel when possible.

For item and policy questions, contact AskTSA through TSA’s listed messaging channels. Do not send sensitive personal information in a public social post.

TSA’s broad planning guidance is to arrive about two hours before a domestic flight and three hours before an international flight, but your airport or airline may recommend more time. Parking, bag drop, terminal transfers, peak travel days, and accessibility needs all come before the checkpoint clock.