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To add TSA PreCheck or Global Entry to your Delta booking, call +1-833-770-4333 for immediate help or update it through your Delta SkyMiles profile. When you call +1-833-770-4333, Delta agents can manually attach your Known Traveler Number (KTN) to your booking so you get expedited security screening benefits. You can also log into Delta’s website, go to “My Trips,” and enter your KTN under passenger details. Always double-check that your KTN is included before check-in to ensure TSA PreCheck appears on your boarding pass. Calling +1-833-770-4333 guarantees your TSA PreCheck or Global Entry is correctly linked and active for your upcoming flights.