What that mysterious code on your boarding pass means

Four S on my boarding pass
Flickr | gabrielsaldana

It’d be hard to find something travelers dread more than waiting in the security line at the airport, but if you just so happen to see the code “SSSS” on your boarding pass, we have some pretty bad news for you: You’ll be in line a lot longer than the rest of us.

SSSS stands for “Secondary Security Screening Selection.” In short, it’s code for, “You’ve been specially selected to spend some extra time with the Transportation Security Administration for some additional security screenings!”


The screening process, which may include bag searches, pat downs and validation of your identity, is conducted by the TSA and could take up to half an hour. There are multiple reasons some travelers get the code stamped on their boarding passes. They include  paying in cash, frequently buying one-way tickets, random selection by computer or travel from a “high-risk country.”

Some flyers have shared photos of their SSSS-marked boarding passes on social media. Twitter user Bahman Kalbasi was flying to Paris from New York in the photo he posted, but says he gets the code on every flight.

Other TSA Codes On Your Boarding Pass

SSSS isn’t the only code used by the TSA on boarding passes. What seems like strings of random letters and numbers are anything but—and can actually reveal a lot about your upcoming trip. Everything from who you are to where you’ll sit and what you’ll be eating is marked right on the pass.

When it comes to where you’ll be seated, just look for a single letter. If you’re ticket has a Y, B, H, M, K, L, W, S, N, Q or O, you have an economy fare. If you’re sporting an A, F or P, you will get the best service during your flight since you’re in first-class. J, R, D and I are business-class fares, so although it’s harder to get upgraded than it used to be, business-class passengers have a better chance of getting bumped up to first-class than coach travelers.

The code S/O means “Stopover,” and indicates you’ll have a layover lasting more than four hours or 24-plus hours internationally. STPC means “Stopover Paid By Carrier,” which is when the airline puts you up in a hotel because your next flight isn’t for several hours or until the next day. If you see either code, start figuring out ways to explore the city you’re stuck in, especially if you have an entire day!

layover photo
Getty Images | William Thomas Cain

And if your flight says “Longhaul,” that means you’re in it for, well, the longhaul. Hopefully, by time you have your boarding pass you’ve realized your flight will be six to 12 hours, but just in case, that’s what this code means.

For more codes and airline jargon you can find on your ticket, check out the infographic from travel company Boxever below:

, ,

Related posts

Delayed passengers sleep in airport terminal
Airlines now have to give you cash instead of voucher for cancelled flight
Bright colorful suitcases and bags on luggage conveyor belt
How to prevent lost luggage and avoid all that arrival stress
Keith Rosenkranz and friends in front of plane on tarmac
Pilot chartered a plane to take 112 friends to Hawaii for his retirement
iPhone and flight info screenshot
This easy iPhone trick lets you track flight info without an app

About the Author
Kaitlin Gates
Kaitlin is a freelance multimedia journalist with a degree in journalism and psychology. Along with Simplemost, she also writes for Don't Waste Your Money, where she loves finding great deals to help people save money. Visit Scripps News to see more of Kaitlin's work.

From our partners