What is "skymiles"

SkyMiles is the frequent-flyer program of Delta Air Lines that offers points (or "miles") to passengers traveling on most fare types, as well as to consumers who utilize Delta co-branded credit cards, which accumulate towards free awards such as airline tickets, business and first class upgrades, and luxury products. Created in 1981 as the "Delta Air Lines Frequent Flyer Program"; its name was changed to SkyMiles in 1995. Delta claims that it is the only major U.S. airline without mileage expiration, so travelers can redeem awards at their leisure. The airline also has a separate SkyBonus program that provides small to mid-sized business owners with a way to earn points for trips taken by employees, good towards free flights, upgrades, Silver Medallion status and other travel awards.

SkyMiles allows both round-trip and one-way redemption but at full round-trip pricing, with economy awards starting at 15,000 miles.