Hello,

A number of international routes that I've flown this summer have had UP8's listed. Anyone have any idea what this code represents? It appears to be a complementary upgrade to Delta One for a revenue passenger but I find that odd since no upgrade instrument isn't required. Even frequent flyers, DM and MM aren't provided comp upgrades unless an oversell situation. This code is above all NRSA travel including PSUP.

Just thought I would ask as it's stumped a number of others.