Check your boarding pass: If the letters SSSS are on it, expect to spend extra time at security. Here's what triggers SSSS on a boarding pass.

If SSSS appears on your boarding pass, plan for an additional 15-45 minutes of TSA screening when you get to the airport. Here's why.

If SSSS appears on your boarding pass, plan for an additional 15-45 minutes of TSA screening when you get to the airport. Here's why.

The code "SSSS" on a boarding pass stands for "Secondary Security Screening Selection," requiring additional screening at TSA checkpoints. Reasons for the "SSSS" code can include last-minute ...

If you do find this quartet of letters on your boarding pass, allow 15–45 minutes of extra time to get through security at the airport. This story was updated to add a gallery.

If SSSS appears on your boarding pass, plan for an additional 15-45 minutes of TSA screening when you get to the airport. Here's why.

If SSSS appears on your boarding pass, plan for an additional 15-45 minutes of TSA screening when you get to the airport. Here's why.