A Kentucky doctor who was dragged off a United flight after he refused to give up his seat to crew members has reached a settlement with the airline for undisclosed amount.

United is America's worst legacy airline, according to a recent survey.

Dao was forcibly removed from a fully-booked United Express flight out of O'Hare International Airport on Sunday to make room for crew members.

NEW video recorded on board a United Airlines aircraft shows the moments that led to a passenger being violently dragged from the overbooked flight.

will never happen again," said United CEO Oscar Munoz. The passenger, David Dao, is at a hospital undergoing treatment for his injuries

JetBlue (JBLU) founder and former CEO David Neeleman said today that in order to prevent mishaps like the one that happened with United Continental (UAL) is to give employees power to increase monetary incentives to get people to give up their seats.

The CEO of United Airlines has apologised for the "truly horrific" removal of a passenger from an overbooked flight.

Married Dr David Dao was convicted of giving a patient drugs in return for gay sex and barred from practicing in Louisville, KY.

Passengers said the man claimed he was a doctor who had patients to see in the morning, refusing to deplane when asked to volunteer to give up his seat on the flight from Chicago to Louisville.