Traveling by air involves numerous tasks, from checking bags to finding gates, which can become stressful with unexpected delays. One often-overlooked detail is a four-letter code on your boarding pass, which many passengers only notice at the airport.

If you see “SSSS,” it indicates Secondary Security Screening Selection. This means the Transportation Security Administration has chosen you for additional screening. It is a standard procedure under the Secure Flight program, used in U.S. airports to assess risk before checkpoints.

Secure Flight compares passenger details like name and date of birth against government watchlists and trusted traveler programs. Its goal is to identify varying levels of risk before flights, ensuring security.

Selection for this extra screening does not mean you are suspected of wrongdoing. Often, it is a random choice or prompted by factors like booking a last-minute ticket, flying internationally, or having incomplete reservation information.

The enhanced screening may include more thorough bag checks, swabs for explosives, or a detailed verification of your identification. It is an added step in the security process.

To ease travel stress, always arrive early and organize your carry-on items. Familiarize yourself with standard rules, such as removing large electronics and complying with liquid restrictions.

Understanding the “SSSS” code allows you to anticipate the process. With preparation, you can proceed calmly through the additional checks and continue your journey smoothly.