What's shocking is the Delta came in first — even above JetBlue and Virgin! United came in dead-last:
United’s abysmal ranking may be due to the fact that it had the highest number of boarding denials (nearly 246 per one million passengers, compared with just 3.58 per one million for JetBlue, which ranked highest in this category) of all the airlines examined as well as the lowest overall customer satisfaction score (it ranked 60 out of 100 compared with 79 out of 100 for JetBlue, which had the best customer satisfaction score).
I knew united was bad about overbooking flights but 246 versus 3.58? Wow. Full breakdown on the numbers is here.