The dreaded SSSS boarding pass: What you need to know about TSA's enhanced screening tag
Getting "SSSS" on your boarding pass isn't a mistake — it's a flag for Secondary Security Screening Selection, which adds extra screening before you fly.
Even if you are approved for the time-saving TSA PreCheck program and/or Global Entry, you are not immune from these dreaded letters appearing on your next boarding pass.
Here's what it means, why it happens and how to handle it smoothly.
Related: What to do if a boarding pass isn't marked TSA PreCheck
What does SSSS mean?
SSSS indicates you've been selected for enhanced security screening. Selection is made by the Transportation Security Administration's Secure Flight system, not by the airline or a gate agent. Enhanced screening can happen at the regular checkpoint, at a separate secondary area or right at the gate; the latter is common on some international departures.
Secure Flight covers flights to, from, within and overflying the U.S. So, SSSS can appear on domestic and international itineraries, both at U.S. airports and international airports where you have a flight to the U.S.
Why you might get SSSS
The TSA does not publish the exact criteria for selection. Secure Flight uses risk-based analysis along with a random element. Situations that sometimes correlate include:
- Last-minute or one-way international tickets
- Irregular booking or payment patterns
- Certain destinations or routes
- Passenger name similarities to individuals on a watch list
Importantly, expedited screening is never guaranteed. Even TSA PreCheck members may occasionally be selected.
Related: 8 ways to get free or discounted TSA PreCheck, Global Entry and Clear
How to tell you've been selected
If you've been chosen for additional screening, you'll usually notice it before you even get to the airport. Online or mobile check-in may be blocked, and you'll be instructed to see an agent to print your boarding pass.
Once it's issued, the letters SSSS will be displayed on the document. At the checkpoint, passengers with SSSS are typically directed through the standard screening lanes rather than TSA PreCheck.
In many airports, the TSA also uses Credential Authentication Technology to scan your ID and verify your flight details at the podium, but you'll still need your boarding pass in hand to board your flight.
What to expect during SSSS
If you do find those feared letters on your boarding pass, it's important not to panic. This does not mean you will have difficulty boarding your flight. However, expect the following:
- Property screening: Your carry-on(s) are likely to be opened and inspected. Officers may swab your hands and/or belongings for explosive trace detection.
- Body screening: You'll likely go through advanced imaging; a pat‑down is common. You can always request a private screening with a companion/witness of your choice present.
- Electronics: Keep devices charged and accessible. You may be asked to power them on; this is most common on some U.S.-bound international flights subject to enhanced measures.
- Where it happens: Secondary screening can occur at the main checkpoint or the gate just before boarding on some routes.
You can request a TSA supervisor to come to handle any questions or complaints you may encounter during the screening, but this will add time to the process.
Related: It's official: Travelers no longer have to remove shoes at TSA checkpoints
How to prepare
If your boarding pass is marked with SSSS, plan to arrive at the airport earlier than usual since the additional screening can take extra time. Make sure your electronic devices are fully charged and organized so you can quickly remove them and power them on if asked.
Packing neatly also helps, especially if you separate dense items, powders and cords to make your bag easier to inspect.
Above all, remain patient and cooperative. Officers are simply following procedure, and staying organized will usually make the process faster.
What to do if you keep getting SSSS
If SSSS appears on nearly every trip, apply for the Department of Homeland Security's Traveler Redress Inquiry Program. Through a Login.gov account, you can submit your details and receive a seven-digit Redress Control Number to use for future bookings. This can help resolve repeated misidentifications.
For quick assistance, contact @AskTSA on X or Facebook Messenger or text "TRAVEL" to 275-872. Travelers with disabilities or medical conditions can also call TSA Cares at 855-787-2227, ideally 72 hours before travel.
Bottom line
SSSS means you've been flagged for additional screening. Timing varies by airport and queue, so be sure to build in extra time. Show up early, keep your belongings organized and charged, and cooperate with officers.
If it becomes a recurring issue, DHS TRIP may help prevent repeat selections.
Related reading:
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