CX251 flight tracker — Cathay Pacific from Hong Kong to London
Track Cathay Pacific CX251 live above: real-time position from ADS-B receivers, altitude, ground speed, winds aloft and a physics-based arrival estimate, with the flown path drawn on the map between Hong Kong and London.
About CX251
CX251 is a Cathay Pacific flight departing Hong Kong International Airport (HKG) in Hong Kong, Hong Kong, arriving at London Heathrow Airport (LHR) in London, United Kingdom. The great-circle route covers about 9,631 km (5,200 nautical miles), with a typical flight time around 13 h 19 min, usually operated by a Boeing 777-300ER.
How the tracker works
Navlytix combines free community ADS-B receivers with Flightradar24 data for ocean coverage, dead-reckons the aircraft between position reports so it moves continuously, and computes the arrival estimate from live distance-to-go and ground speed rather than the airline's published revision. You can also replay past flights and browse the route's history.