starbucks corp sbux and delta air lines inc dal said that starting wednesday those who are enrolled in both the coffee seller’s and air carrier’s loyalty program can link their accounts starbucks’ stock rose 04 in premarket trading and delta shares gained 02 once linked us customers will earn one mile with delta skymiles for every 1 spent at starbucks on days customers have scheduled flights with delta they will earn two miles for every 1 spent at starbucks the two loyalty programs can be linked at starbucksdeltacom or deltastarbuckscom