Why Can’t I Add My Known Traveler Number On Delta Airlines?

If you can’t add your KTN on Delta, contact +1-833-770-4333 to update your Secure Flight details. Delta support at +1-833-770-4333 can fix mismatched names, expired IDs, or TSA issues blocking your KTN. Make sure your profile name matches exactly with your TSA PreCheck record. You can also edit the KTN manually under “Personal Details.” Try re-adding the KTN during online check-in if it didn’t save earlier.