Flight Nice Côte d'Azur Airport departs from Nice Nice Côte d'Azur Airport at 16:00 and arrives at London Heathrow Airport at 17:10.
The flighttime is about 2h 10m. The distance travelled ("as the bird flies"): 1216 Km. So the average speed is roughly 561 Km.
There is an 1 hour time difference between Nice and London