Delta Plans to Radically Change SkyMiles Program

Delta Air Lines will radically change its SkyMiles frequent flier program next year, becoming the first of the "big three" U.S. airlines to ditch a fixed miles-for-a-free-flight system in favor of a supply-and-demand scheme that may require more mileage points to fly on more popular routes.
JetBlue, Southwest and Virgin America already offer this type of award program.
Delta announced the latest change to the SkyMiles program last week, saying that "the number of miles needed (for a free flight) will change based on destination, demand and other considerations," beginning on June 1, 2016.