A U.S woman died on holiday in Hungary after being refused a seat on three flights back to New York because she was too heavy to fly, according to her husband.

Vilma Soltesz, 56, from New York, had weighed about 425lbs, had only one leg and used a wheelchair

She died from health complications in Hungary nine days after she was kicked off the first of three flights and now her death could now be the cause of a multimillion-dollar lawsuit against the airlines.

On September 17, she had travelled with her husband Janos to Hungary to stay in their holiday home, a trip they made every year

Before the journey, their travel agent informed Delta of Mrs Soltesz's condition and they planned to return on October 15 so Mrs Soltesz could continue her medical treatment for her illness - a combination of kidney disease and diabetes.

Mr Soltesz said his wife was already seated on the plane when they were asked to leave by KLM.

'They tried to fit her into the back of the plane, but they didn’t have an extension to secure her,' he said. 

She had gained weight due to her illness and the airline said it did not have a seat-belt extender for her, Mr Soltesz said.

He was also told the seat back could not take his wife’s weight.