What to expect when you reach the TSA checkpoint

TSA security moves fastest when you know what to do before you reach the line. You will need a valid ID — a driver's license, passport, or military ID — and your boarding pass, either printed or on your phone. Have both ready before you step up to the agent. The checkpoint has three main stages: ID check, the scanner line, and the exit. Most people spend 5 to 15 minutes total, though busy times at major airports can stretch that to 30 minutes or more.

The TSA agent at the first podium will look at your ID and boarding pass to confirm they match and that your flight is real. They may ask where you are traveling and why. Answer briefly and honestly. If you have TSA PreCheck or Clear, show that membership card or scan it now — it moves you to a faster lane.

After ID check, you move to the scanner area. This is where most people slow down because they do not know what to remove. The rule is straightforward: anything metal, anything liquid, and anything that blocks an X-ray image has to come out of your bag and off your body.

Key Takeaways

  • Bring a valid ID and your boarding pass to the checkpoint; have both ready before you reach the agent.
  • Remove shoes, belt, jacket, and all metal items; take out laptops, liquids, and gels before you reach the scanner.
  • Liquids and gels must be 3.4 ounces or smaller and packed in a single quart-sized clear bag; one bag per person.
  • TSA PreCheck costs $78 to $85 for five years and lets you keep shoes and light jackets on and leave laptops in your bag.
  • If you are flagged for extra screening, stay calm and cooperate; secondary screening adds 5 to 10 minutes in most cases.

What to remove and what to leave in your bag

At the security line, remove your shoes and place them in a bin. Remove your belt, watch, and any other metal jewelry. Empty your pockets completely — coins, keys, phone, wallet, all of it goes in a bin or your carry-on. If you wear a light jacket or sweater, take it off and put it in a bin. A heavy winter coat should come off too. Leave your shirt and pants on.

Your laptop or large tablet must come out of your bag and go in its own bin. Smaller tablets can stay in your bag. All liquids and gels — including toothpaste, shampoo, lotion, peanut butter, and yogurt — must come out and go in a clear quart-sized plastic bag. Each person gets one bag. If you do not have a bag, the TSA has them at the checkpoint, but it is faster if you bring your own.

Leave your carry-on bag packed. You do not need to open it unless the agent asks. Solid foods like sandwiches, fruit, and candy can stay in your bag. Medications in pill or powder form can stay in your bag, though you may be asked to open the container for inspection.

The 3-1-1 rule for liquids and gels

The TSA limits liquids and gels to a total of 3.4 ounces per container. The rule is called 3-1-1: 3.4 ounces, 1 quart-sized bag, 1 bag per person. If a container is larger than 3.4 ounces, you cannot bring it through security, even if it is only half full. The size printed on the label is what counts, not how much is actually inside.

Pack your liquids bag in an straightforward-to-reach spot in your carry-on or remove it before you reach the scanner. You will need to pull it out and place it in a bin. Common items that count as liquids include deodorant, cologne, sunscreen, mascara, foundation, and hair gel. Solid deodorant and solid sunscreen sticks do not count as liquids. Medications in liquid form — like inhalers or eye drops — count, but you can bring them in quantities larger than 3.4 ounces if you declare them and they are for your personal use.

Going through the scanner and what happens next

After you have removed everything required, you will walk through either a metal detector or a full-body scanner. The full-body scanner is the large booth you walk into and stand still for a few seconds. It is safe and does not use radiation. If you go through the metal detector and it beeps, you will be sent back to remove more items or be directed to secondary screening.

Once you clear the scanner, collect your bins and move to a table or bench to put your shoes back on and repack your bag. Do this away from the scanner line so you are not blocking people behind you. Put your laptop back in your bag, your liquids bag back in your carry-on, and your belt and jacket back on. Check the ground and the bins to make sure you have not left anything behind.

After you have repacked, you are through security. Your boarding pass will be scanned one more time at the gate before you board the plane, but that is a different checkpoint and moves much faster.

TSA PreCheck: when it is worth the cost

TSA PreCheck costs $78 to $85 for a five-year membership. If you travel more than twice a year for work or personal reasons, it usually pays for itself in time saved. With PreCheck, you go through a dedicated faster lane. You can leave your shoes, socks, light jacket, and belt on. You can leave your laptop and quart-sized liquids bag in your carry-on. You do not have to remove your watch or light metal jewelry.

To get PreCheck, you explore online, pay the fee, and then go to an enrollment center for a 10-minute appointment. The TSA has enrollment centers at many airports and at some post offices and other locations. You bring your ID, proof of citizenship or lawful permanent residence, and your Social Security number. After approval, you receive a Known Traveler Number (KTN) that you add to your airline reservations. Your boarding pass will then show a PreCheck indicator, and you will be routed to the PreCheck lane.

PreCheck is not worth it if you fly once a year or less. It is also not worth it if you travel only internationally, because PreCheck does not explore to flights leaving the United States — only domestic flights.

What to do if you are stopped for secondary screening

Secondary screening happens when the scanner flags something or when an agent decides to do a random check. You will be asked to step aside and wait for an agent. The agent may pat down your clothing, swab your hands or bag for explosive residue, or open your bag and inspect the contents. This is routine and happens to thousands of people every day. Stay calm and cooperate.

Secondary screening usually takes 5 to 10 minutes. If you are traveling with a child, you can request that a same-gender officer perform the screening. If you have a medical device, prosthetic, or other item that needs special handling, tell the agent before they begin. You can also request a private screening room if you prefer.

If you miss your flight because of secondary screening, the TSA does not pay for a new ticket, but the airline may rebook you on the next available flight at no charge. This is rare — most secondary screenings do not make you late.

Common mistakes that slow you down

The biggest mistake is not removing liquids before you reach the scanner. If your liquids bag is still in your carry-on when you go through, the scanner will flag it and you will have to step aside, remove it, and go through again. This adds 5 to 10 minutes to your time.

The second mistake is wearing shoes that take a long time to remove. Slip-on shoes are fastest. Laced boots or shoes with buckles slow you down. If you know you will be going through security, wear shoes you can remove and put back on in under 30 seconds.

The third mistake is having your ID and boarding pass in your wallet or bag when you reach the podium. Have both in your hand before you step up. The fourth mistake is packing prohibited items. Knives, lighters, and tools are not allowed in carry-on bags. Check the TSA website before you pack if you are unsure about a specific item.

Frequently Asked Questions

Can I bring my phone and wallet through security?

Yes, but you must remove them from your pockets and place them in a bin or your carry-on before you go through the scanner. If you leave them in your pocket, the metal detector will beep and you will have to go back and remove them. It is faster to remove them first.

What if I forget my ID at home?

You can still fly, but you will go through extra screening. Tell the TSA agent you do not have an ID. They will ask you additional questions and may ask you to sign a form. The process takes longer than normal, so arrive at the airport earlier than you would with an ID.

Can I bring a lighter or matches in my carry-on?

No. Lighters and matches are not allowed in carry-on bags or checked bags on commercial flights. If you have one, throw it away before you reach the checkpoint or pack it in a checked bag if your airline allows it — rules vary by airline.

Do I have to remove my glasses or hearing aid?

No. Glasses and hearing aids do not need to be removed. If your glasses have a metal frame and the metal detector beeps, you can leave them on and walk through again, or remove them if you prefer. The agent will tell you what to do.

What happens if TSA finds something prohibited in my bag?

The agent will remove the item and either throw it away or give it back to you if you want to leave it with someone outside security. You will not be arrested for an honest mistake. If you intentionally bring a prohibited item, you may face a fine or other penalties, but this is rare for first-time travelers.