If you're a frequent Delta flyer, you should definitely be enrolled in the SkyMiles passenger reward program. This program is free and simple to enroll in. The Delta SkyMiles program provides free airline tickets and other valuable rewards. If you're already a member, you'll certainly want to make sure that you are properly credited for all the trips you take.
Make sure you're enrolled in the Delta SkyMiles program before you buy your ticket or fly. You can enroll online or with an agent when you call to purchase a ticket.
Provide your Delta SkyMiles number when you purchase your tickets in order to automatically add qualifying trips to your Delta SkyMiles account.
Save any tickets, receipts and boarding passes until your are certain that your trip has been added to your Delta SkyMiles account.
Check your history using the Delta SkyMiles Website if you're unsure whether your trip miles have been added to your account.
Fill out the "Request Mileage Credit" form on the Delta SkyMiles Website to add trips to your account after the fact. You will need the specific details of the flight--including flight number and ticket number--to complete this process. This only works in the case of travel with Delta or its subsidiaries. Alternately, submit copies of your documents by fax to Delta SkyMiles at (404) 773-1945.
Make sure that you complete this process and have your claim resolved within six months after traveling. If in doubt, call (800) 323-2323 to speak to a SkyMiles service representative.