An 11-year-old woman has died after dropping consciousness throughout a flight from Istanbul to New York.

Turkish Airlines informed Sky News the woman grew to become unwell in the course of the flight on Sunday and cabin crew requested over the PA system if there was a physician on board.

The captain of the aircraft "instantly diverted to Budapest" and a physician on the flight attended to the woman, the corporate added.

After the aircraft made an emergency touchdown at Budapest International Airport, "medical teams boarded the aircraft for further treatment but despite all efforts, [the] passenger couldn't be saved", Turkish Airlines stated.

"We offer our heartfelt condolences to the family and loved ones and share their pain," the corporate added.

The aircraft continued its journey to New York after a four-and-a-half hour delay.

Some studies stated the kid who died was a boy however Turkish Airlines confirmed the passenger was a lady.

The reason behind dying has not been revealed.