United Airlines Closes Lucrative MileagePlus Loophole

United Airlines has recently updated the terms of its MileagePlus MillionMiler companion policy to end the practice of “daisy chaining” in which–at least in theory–an endless number of MillionMiler flyers could share Global Service status. United Airlines Shuts Down MileagePlus Loophole By Restricting “Daisy Chaining” The MillionMiler program for United MileagePlus is the most generous…