When you book a flight with Delta, adding your known traveler number helps speed up check‑in, security, and boarding. This short guide explains why the number matters and exactly when to enter it after booking.
You can complete this step on any device, and it takes just a minute once you know where to look. The following sections break down the process, timing, and troubleshooting tips specific to Delta.
| Step | Where to Find It | When to Do It | What It Changes |
|---|---|---|---|
| Log in to Booking | Delta.com or Fly Delta app | Right after reservation confirmation | Links your profile to the reservation |
| Open Manage Booking | Confirmation email or dashboard | Before online check‑in opens | Makes known traveler number visible at checkpoints |
| Enter Known Traveler Number | Profile or passenger details section | As soon as it’s assigned | Syncs TSA PreCheck or Global Entry status |
| Save and Verify | Review screen before payment step | Immediately after entry | Ensures no rework at airport |
Booking and Reservation Management
Locate Your Known Traveler Number Quickly
Your known traveler number appears in your welcome email from TSA or Global Entry, on the kiosk receipt, or inside your member dashboard. Copy it exactly, including any letters and hyphens, so Delta recognizes it instantly.
If you cannot find the number, log in to the TSA or CBP programs where you enrolled and view the official reference. Entering the wrong code can delay processing, so double‑check before you submit.
Link the Number to Your Delta Reservation
After booking, go to Manage Booking and open the passenger details section. Add the known traveler number in the designated field and save. This tells Delta to apply your trusted traveler status at every touchpoint.
Check‑In and Boarding Procedures
Online Check‑In with Trusted Traveler Status
Once check‑in opens, your known traveler number should already attach to the reservation. Confirm it appears under the passenger name, then proceed to select seats and receive the appropriate baggage tag instructions.
If the number is missing, reenter it in the profile area or contact Delta support before printing your boarding pass to avoid revalidation at security.
Security and Boarding Priority
With the correct number on file, you can proceed to a TSA PreCheck lane and keep electronics and liquids in your carry‑on. At the gate, present your ID and boarding pass; agents will verify your linked status before boarding begins.
If the number does not display, remind the agent of your known traveler identifier and ask them to verify it in the system. Quick verification at this stage reduces the chance of being pulled into the standard line.
Mobile App and Real-Time Updates
Using the Fly Delta App Effectively
Open the app, tap the reservation, and review the traveler details section. The known traveler number should appear next to your profile, and you can update it if the reservation does not yet show the code.
Enable notifications so the app alerts you if status changes or if additional action is required before departure.
Streamlined Travel Preparation
- Find your official known traveler number in TSA or CBP materials before booking or immediately after.
- Enter or confirm the number in Delta Manage Booking before check‑in opens.
- Verify the number appears on your reservation and boarding pass.
- Use the Fly Delta app for real‑time updates and quick corrections.
- Reconfirm the number at the airport if you made changes close to departure.
FAQ
Reader questions
I added my known traveler number after booking, but it does not appear on my reservation. What should I do?
Log back into Manage Booking, open passenger details, carefully retype the number, and save again. If it still does not appear, contact Delta support and provide your reservation code along with the exact known traveler number.
Can I add my known traveler number after online check‑in has closed?
Yes, you can usually add or confirm the number up to the airport even after online check‑in closes. Visit a Delta ticket counter or authorized kiosk, present your ID, and request the number be linked before security screening.
Will entering the wrong known traveler number cause problems at security?
It can cause delays if the code does not match your TSA or CBP records. Double‑check the exact number before saving, and as soon as you notice a mistake, update it in Manage Booking or speak with a representative at the airport.
Does adding my known traveler number affect baggage fees or seat selection?
No, the known traveler number only activates trusted traveler benefits like PreCheck. It does not change baggage policies, fare rules, or seat selection options associated with your ticket.