Can I add Delta SkyMiles after booking?

Written by Editorial Team | Last Updated: August 2026

Passengers can easily add their Delta SkyMiles frequent flyer account number to a reservation even after the initial booking has been completed. If the flight has not yet taken place, travelers can log into the official Delta Air Lines website or mobile application, navigate to the My Trips section, search for the reservation using the confirmation code and passenger name, and update the loyalty and benefits details to include their SkyMiles number. Alternatively, if the flight has already occurred, members can request retroactive mileage credit online through the account activity page or by contacting customer support, provided the trip happened within the allowed post-flight timeframe.

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