United Airlines flight from Rome to Denver has turned around over Atlantic and is diverting to Dublin Airport.
The Boeing Boeing 787-9 with registration N29991 turned around about 3 hours into the flight.
UPDATE #1
The flight UA178 has landed runway 10L at Dublin Airport, 4 hours after departure from Rome.
UPDATE #2
We have confirmation the flight diverted to DUB due to a medical emergency on board.