While TSA PreCheck is only available in the US, Delta Sky Priority also includes faster security lanes in foreign countries. The major differences between Delta Sky Priority and TSA PreCheck come down to their airport availability and pricing.

No, Delta Sky Priority and TSA PreCheck are entirely different services in 2026, though they are often used together. Sky Priority is an airline-specific suite of "perks" for Delta’s high-status frequent flyers and First/Business class passengers; it grants you a shorter line at the check-in counter, priority baggage handling, and early boarding. TSA PreCheck, however, is a U.S. government "Trusted Traveler" program that manages the security screening process. With PreCheck, you enter a separate security lane where you don't have to remove your shoes, belts, or laptops. A passenger can have Sky Priority but still have to go through the "standard" security line if they aren't enrolled in PreCheck. Conversely, a traveler can have TSA PreCheck but be in the last boarding group if they don't have Sky Priority. In 2026, the most elite travelers use Delta's Digital ID (Biometric) lanes, which combine both services using facial recognition to move you from the curb to the gate without ever showing a physical ID.