Voters in the US have a more favourable opinion of United Airlines than they do of Donald Trump a new poll has found.

In a survey released on Thursday (20 April) from the left-leaning Public Policy Polling (PPP), 42% say they prefer United to Trump, while 40% favour Trump instead.

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Footage of security officers in Chicago roughly dragging David Dao off a Louisville-bound flight aircraft earlier this month went viral, sparking global backlash.

Pollsters found generally negative attitudes toward United, with 47% viewing it unfavourably. Twenty-three percent see the airline favourably.

United was ranked in the survey as America's worst airline, with 40% putting it at the bottom of the list. With 37% picking "something else," while 10% said American Airlines, 8% said Southwest Airlines and 6% responded Delta Airlines.

Dao's attorney claimed last week that the 69-year-old doctor suffered a concussion, broken nose and lost two teeth during the incident. He who was randomly selected to relinquish his seat, was ousted after refusing to give up his spot to help accommodate four United personnel on the overbooked flight.

Trump has suffered with historically low approval ratings since coming to office after having his travel ban blocked in the courts and failing to replace and repeal Obamacare.

Donald Trump