What’s a redress number and how does it differ from a KTN?

When you’re traveling for business, getting through security smoothly can set the tone for a pleasant, productive trip. But if you often face extra screenings or delays during the security process, applying for a redress number through the Department of Homeland Security might help you avoid repeat slowdowns.

So what exactly is a redress number—and more importantly, how do you get one? In this guide, we’ll explore how redress numbers work, who needs one, and how they differ from Known Traveler Numbers. 

What’s a redress number?

A redress number is a seven-digit identification number issued by the Department of Homeland Security (DHS) through its Traveler Redress Inquiry Program (TRIP). It’s designed to help travelers who have been repeatedly misidentified or flagged during airport security screenings.

If you share a name with someone on the no-fly list or another security watch list, you may get flagged when going through airport security. In some cases, you may even be denied boarding. 

A redress number helps resolve these issues by confirming your identity and reducing the chances of extra screening. 

Redress numbers are numeric-only—an example redress number would look something like “1234567.” They’re also distinct from other trusted traveler programs like TSA Precheck or Global Entry. Many business travelers use a combination of travel IDs to move through security more efficiently. 

Why do you need a redress number? 

Business trips often run on tight schedules with quick connections. Going through extra security checks could slow down your entire team. 

A redress number helps prevent these slowdowns by confirming your identity with the Transportation Security Administration (TSA), airlines, and border control so they know you’re safe to travel without extra screening. 

You might need to get a redress number from DHS if:

• You can’t access or print your boarding pass online and must check in with a ticket agent every time
• TSA regularly subjects you to extra screenings or stops you from boarding due to identity confusion
• A government agent has informed you that your travel authorization was denied
• You’re repeatedly flagged for pat-downs, interviews, or bag checks at security
• Airport staff can’t verify your identity, even with valid documents like a passport card
• You face additional screenings—or have been denied entry—when entering the U.S.

Redress numbers vs. Known Traveler Numbers

Redress numbers and Known Traveler Numbers both help streamline the travel process, but they serve very different purposes. Travelers often confuse the two, so it’s important to know when and why you’d need each one.

What’s a Known Traveler Number?

A Known Traveler Number (KTN) is a nine- or 10-digit ID issued by the TSA as part of trusted traveler programs like TSA PreCheck, Global Entry, NEXUS, or SENTRI. With a KTN, you can access expedited security lanes—no need to remove shoes, belts, or electronics. If you're approved for Global Entry or similar programs, you can also speed through U.S. customs using special kiosks and lanes.

Key differences between KTNs and redress numbers

• Purpose: KTNs are for faster screening; redress numbers resolve identity issues.
• Eligibility: Anyone can apply for a KTN; redress numbers are only needed if you've experienced security delays or misidentification.
• Length: Redress numbers are seven digits; KTNs are nine or 10.
• Cost: KTNs require an application fee and in-person screening; redress numbers are free and handled online via DHS TRIP.
• Managing agency: KTNs are managed by TSA; the Department of Homeland Security manages redress numbers.

How to use a redress number

Using a redress number is straightforward and helps prevent delays at airports or other international ports of entry. Here’s a step-by-step breakdown of how to obtain and use a redress number for travel. 

1. Apply through the DHS TRIP portal

Start by submitting an application through the Department of Homeland Security’s Traveler Redress Inquiry Program (TRIP). You’ll need to upload a copy of your passport or government-issued ID card. Immigrants seeking a redress number may also need to provide copies of their visa, naturalization certificate, or green card. 

2. Include incident details

To strengthen your case, provide as much documentation as possible. Include descriptions of the travel issues you’ve faced, like repeated screenings, denied boarding, or customs delays.

3. Wait for review

Once submitted, DHS will review your application and assign you a case number. If approved, you’ll receive your redress number. Depending on the volume of applications, processing can take up to two months.

4. Update your frequent flyer profiles

Once your redress application is approved, you can view your number anytime via the DHS TRIP portal. If you’re enrolled in frequent flyer programs, be sure to add your redress number to your profile so it’s automatically included on future tickets. Providing that information ahead of time will prevent any issues during upcoming business travel plans.

5. Provide your redress number during booking

If you don’t have a frequent flyer account, you’ll need to manually enter your redress number each time you book a flight. Most airlines include a field for it during the online booking process. If you forget, you can also provide the number to a ticket agent at the airport to have it added before check-in.

Streamline your business travel experience with Engine

If you’ve faced airport security delays in the past, applying for a DHS redress number can make future trips smoother and less stressful so you can focus on what you’re there to do: work. 

Engine makes managing business trips a breeze for your entire team. With Engine, you can book flights, hotels, and rental cars all in one place, modify bookings with just a click, and access all your receipts and invoices in one streamlined dashboard. 

Sign up for free today and take the hassle out of business travel.

FAQs

Where do I find my redress number?

If you’ve been approved for a redress number, you can log into the Department of Homeland Security’s TRIP portal to view it. Your redress number is also included in your approval letter or email confirmation. Once you have a number, save it to your frequent flyer profiles or enter it when booking flights to avoid delays.

Is a redress control number the same as a redress number?

Yes, “redress control number” and “redress number” refer to the same thing. It’s a seven-digit ID issued by DHS to help travelers resolve identity-related security issues. You’ll use this number when booking flights or checking in to avoid additional screenings or misidentification.

Is a PASSID the same as a Known Traveler Number?

Yes, “PASSID” is another name for your Known Traveler Number (KTN). You’ll find it on the back of your Global Entry, NEXUS, or SENTRI card. This nine- or 10-digit number gives you access to expedited security lanes through programs like TSA PreCheck and Global Entry.

What happens if I don’t have a redress number?

If you don’t have a redress number and you’ve been flagged in the past due to identity mix-ups or watch list confusion, you may continue to face extra screenings, delayed boarding, or issues accessing your boarding pass online. While not all travelers need a redress number, applying for one through DHS TRIP can help resolve these recurring security problems and streamline future trips.