Emergency vehicles were seen on the runway as it landed. He tweeted a video from his view on the jet's upper deck.
"This is insane. Apparently there is over 100 people sick on the bottom floor, so happy I'm up top, it's a double-decker plane 380", he wrote. She said members of the crews had not contacted medical personnel ahead of landing to alert them of sick passengers on board.
The plane was quarantined Wednesday at Kennedy Airport.
The plane, an Emirates double-decker Airbus A380 traveling from Dubai, had landed shortly after 9 a.m. local time (1310 GMT), according to the airline. Health workers were evaluating about the passengers as the airplane sat on the tarmac of the airport, authorities said. "We've got news stations and police and a bunch of ambulances".
Shortly after, a passenger on board, Larry Coben, tweeted that passengers were now being allowed off after filling out paperwork from the Centers for Disease Control and Prevention.More news: Alex Jones heckled Marco Rubio right outside Twitter and Facebook’s Senate hearing
A NY police counterterrorism division tweeted it appeared to be a "medical situation".
Flight 203 was quarantined at JFK airport on Wednesday after more than 100 passengers and crew complained of feeling unwell during the flight. The airline later confirmed that three passengers and seven crew were transferred to hospital for "further medical care and evaluation".
But the Centers for Disease Control and Prevention said the estimated number was about 100.
An Emirates superjumbo in NY has been met by ambulances, police and disease control experts after passengers became unwell.
Reports suggest symptoms point to the flu.
Airline representatives did not immediate respond to an email.