Delta has a program to reward their customers called Skymiles. Through Skymiles you can earn miles that can be traded for free tickets. It is a great program that is easy to use and that has many other benefits. It is completly free.
After signing up for Skymiles you will recieve an e-mail from Delta inviting you to sign up for e-rewards. E-rewards is a survey site where you will be asked to take surveys of different lengths. You earn e-rewards dollars which may be redeemed for Delta Airline Skymiles. You can earn miles quickly with this site. No spam and very professionaly operated site. You can earn 3,000 to 4,000 miles or more in a year with this program.
Sign up with e-miles.com. You can earn miles with this program by purchasing advertised products or simply by viewing an ad. The site works very well, is not complicated, and will transfre your earned miles to the Skymiles program in an efficient, professional manner. It is not hard to earn 500 to 1000 Skymiles over a period of just one year just by veiwing ads.
To add to your Skymiles. Delta and Northwest Airlines are merging. Sign up with both Delta Skymiles and Northwest Airlines Worldperks. Register to transfer miles between the sites and earn 500 miles and then another 500 free miles as an award for signing up. Be sure to take the Worldperks university class located on the Worldperks website to earn easy extra miles.
Delta has many partners which Skymiles can be earned by purchasing services or items.
When you fly Delta, Skymiles can be earned for the miles flown.