Twitter Thinks Domestic Airlines Are the Worst (Because They Are)

United lands at the bottom of the list. The only surprise here is with myself; I’ve somehow resisted the urge to call Delta to ask if I can transfer my United miles/status to Delta’s frequent flier program. But trying to switch your frequent flier status and miles from one domestic airline to another is like trading a French franc for an Italian lira or a German mark — they’re all worthless.