Only Hawaiian Airlines was worse at 3.99, the result of three deaths among the 7,518 animals it transported. United transported 109,149 animals last year, second only to Alaska Airlines with 112,281. Airport security officers removed David Dao, a 69-year-old from Kentucky, from the United Express flight. Images of his bloodied face were widely circulated on social media, forcing United CEO Oscar Munoz to apologize. The airline said leggings violate the dress code of the United Pass program, a benefit for employees and their dependents.

Source: ABC News April 26, 2017 09:38 UTC